K2CM-Q1LA [OMRON]

Solid-state Relay Enables Choice of Three Operating Functions (Overcurrent, Openphase, and Reverse-phase); 固态继电器启用三种操作功能选择（过流， Openphase和反相）


型号：	K2CM-Q1LA
厂家：	OMRON ELECTRONICS LLC
描述：	Solid-state Relay Enables Choice of Three Operating Functions (Overcurrent, Openphase, and Reverse-phase) 固态继电器启用三种操作功能选择（过流， Openphase和反相）继电器固态继电器
文件：	总16页 (文件大小：1156K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Motor Protective Relay

K2CM

CSM_K2CM_DS_E_5_1

Solid-state Relay Enables Choice of Three

Operating Functions (Overcurrent, Open-

phase, and Reverse-phase)

• Protects 3-phase induction motors and their loads from dam-

age.

• Selection and combination of operating functions from overcur-

rent, open-phase, and reverse-phase.

• Circuit and output relay operation can be checked by just oper-

ating the test button.

• The set time value can be checked easily because operation

time is indicated from the start of operation.

• Space-saving, integrated construction.

Note: If the K2CM is used with an inverter, the operating conditions will

depend on the load wiring length, inverter carrier frequency, basic

frequency, and load conditions. Error will occur in the operating

values of the overload elements. It is recommended to test

operation before using the K2CM.

Model Number Structure

■ Model Number Legend

K2CM-@@@-@@

2 3 4 5 6

1. Model

5. Current setting range

K2CM: Motor relay

2. Mounting style

None: Surface-mounting, integrated type

3. Operating time characteristics

None: Inverse type

LS:

2 to 8 A

8 to 26 A

20 to 65 A

50 to 160 A

6. Operating time

Instantaneous type

None: ×1 (2 to 10 s)/ ×4 (8 to 40 s) Switchable

4. Supply voltage of control circuit

7. Resetting method

100/110/120 VAC

200/220/240 VAC

400/440 VAC

None: Manual reset

Automatic reset

8. Reverse-phase detection type

None: Current reverse-phase detection

Voltage reverse-phase detection

Ordering Information

■ List of Models

Voltage Reverse-phase Detection Models

Time specification

Current setting range

Operating voltage

200/220/240 VAC

Inverse type

20 to 65 A

Instantaneous type

Resetting

method

8 to 26 A

50 to 160 A

8 to 26 A

20 to 65 A

50 to 160 A

Manual

K2CM-2LV

K2CM-2LAV

K2CM-2MV

K2CM-2HV

K2CM-Q2LV

K2CM-Q2MV

K2CM-Q2MAV

K2CM-Q2HV

Automatic 200/220/240 VAC

K2CM-2MAV

K2CM-2HAV

K2CM-Q2LAV

K2CM-Q2HAV

K2CM

Current Reverse-phase Detection Models

Time specification

Current setting range

Operating voltage

100/110/120 VAC

200/220/240 VAC

400/440 VAC

Inverse type

Instantaneous type

8 to 26 A 20 to 65 A 50 to 160 A

2 to 8 A

8 to 26 A 20 to 65 A 50 to 160 A

2 to 8 A

Resetting

method

Manual

K2CM-1LS K2CM-1L K2CM-1M K2CM-1H K2CM-Q1LS K2CM-Q1L K2CM-Q1M K2CM-Q1H

K2CM-2LS K2CM-2L K2CM-2M K2CM-2H K2CM-Q2LS K2CM-Q2L K2CM-Q2M K2CM-Q2H

---

K2CM-4L K2CM-4M K2CM-4H ---

K2CM-Q4L K2CM-Q4M K2CM-Q4H

Automatic 100/110/120 VAC

K2CM-1LSA K2CM-1LA K2CM-1MA K2CM-1HA K2CM-Q1LSA K2CM-Q1LA K2CM-Q1MA K2CM-Q1HA

K2CM-2LSA K2CM-2LA K2CM-2MA K2CM-2HA K2CM-Q2LSA K2CM-Q2LA K2CM-Q2MA K2CM-Q2HA

(See

200/220/240 VAC

note.)

400/440 VAC

---

K2CM-4LA K2CM-4MA K2CM-4HA ---

K2CM-Q4LA K2CM-Q4MA K2CM-Q4HA

Note: The manual resetting method must be used with reverse-phase detection.

■ Related Product

Transformer

Model

Voltage specification

Secondary power

consumption

SE-PT400

Primary side

380 to 480 V (wide power supply range) 7VA

190 to 240 V (wide power supply range)

Secondary side

Note: Use this Transformer when a voltage reverse-phase detection model is used on a 400-V line.

Specifications

■ Ratings

Other features, such as 100% overcurrent capacity and flush mounting are also available. See Model Number Legend on page 1 for details.

Supply voltage of motor circuit

200/220, 400/440 VAC, 50/60 Hz

100/110/120, 200/220/240, 400/440 VAC, 50/60 Hz

500 VAC

Supply voltage of control circuit

Insulation breakdown of output contact

Operating voltage/current of output contact NO contact: 120 VAC/2 A, 240 VAC/1 A, 440 VAC/0.5 A, 110 VDC/0.2 A, 220 VDC/0.1 A

(pf = 0.4 when breaking contact)

NC contact: 120 VAC/5 A, 240 VAC/2 A, 440 VAC/1 A, 110 VDC/0.2 A, 220 VDC/0.1 A

Contact form of output contact

Current reverse-phase detection models: SPST-NO + SPST-NC

Voltage reverse-phase detection models: SPDT

Operating current range of input circuit

Operating voltage range of control circuit

2 to 160 A (Number of passes: 1)

85% to 110% of rated voltage, but operates normally at 50% of open-phase supply voltage

Operating frequency range of control circuit 95% to 105% of rated frequency

Power consumption

Approx. 3 VA (in standby state); 5 VA (in operating state)

115 10% of the setting value

Overcurrent function operating value

Overcurrent function operating time setting Inverse Type

range

Inverse time both at startup and during operation:

Timer scale × 1 (s) at 600% overload

Timer scale × 3 (s) at 200% overload

Note: The above values are for a time factor setting of 1.

Instantaneous Type

Fixed time at starting (start-up lock)

• Time setting value (varies between 2 and 40 s) at 140% overload and starting

Instantaneous during operation: 0.5 s max. (when current is increased from 100 to 140% of the

set current value)

Case color

Munsell 5Y7/1

Overcurrent function operating time

characteristics

Inverse type: 10% of maximum setting value (at 600% overload)

Instantaneous type: 20% of maximum setting value (at 140% overcurrent and at starting)

Overcurrent function resetting value

100% min. of the setting value

Overcurrent function start-up operating

value

Inverse type: Not applicable

Instantaneous type: 30% max. of the setting value (See note.)

Open-phase operating value

Open-phase operating time

Reverse-phase operating value

Reverse-phase operating time

Imbalance operating value

Current imbalance factor

85% max. of the set current value (at open-phase)

2 s max. (at overcurrent operating value)

50% max. of the current value (80% max. of the operating voltage)

1 s max. (at overcurrent operating value)

85% of the set current value

High: 35 10%; Low: 60% min. (at overcurrent operating value)

where

Reverse phase portion

Imbalance factor =

× 100 (%)

Normal phase portion

Note: The start-up lock timer restarts when the operating value at starting becomes less than 30% of the set current value.

K2CM

■ Characteristics

Variation due to

temperature

fluctuation

At 20 20 °C

Overcurrent:

Open-phase:

5% of operating value, 10% of operating time

10% of operating value, 10% of operating time

Reverse-phase: 10% of operating value, 10% of operating time

At 20 30 °C

Overcurrent:

Open-phase:

10% of operating value, 20% of operating time

20% of operating value, 20% of operating time

Reverse-phase: 20% of operating value, 20% of operating time

Variation due to

At 85% to 110% of Overcurrent:

Open-phase:

5% of operating value, 10% of operating time

voltage fluctuation rated voltage

Reverse-phase: 5% of operating value, 10% of operating time

Variation due to

frequency

fluctuation

At 95% to 105% of

rated frequency

Insulation resistance

10 MΩ min. (between current-carrying terminals and mounting panel)

5 MΩ min. (between current-carrying terminals and between contact poles)

Dielectric strength

2,500 VAC (between current-carrying terminals and mounting panel and between current-carrying

terminals)

1,000 VAC (between contact poles)

Permissible impulse voltage

Current reverse-phase detection models:

6,000 V (between current-carrying terminals and mounting panel)

4,500 V (between current-carrying terminals and between control power supply terminals)

Waveform: 1.2/50 µs

Voltage reverse-phase detection models:

4,500 V (between current-carrying terminals and mounting panel)

Waveform: 1.2/50 µs

Overcurrent strength of main circuit

No abnormality develops when 20 times the set current value is applied for 2 s, 2 times with a 1-

minute interval.

Overvoltage strength of control power No abnormality develops when 1.15 times the relay’s rated voltage is applied once for 3 hours.

supply circuit

Variation due to waveform distortion

Vibration

No malfunction occurs when pulse containing 100% of the 2nd to 9th harmonics is applied (open-

phase switch set to “Low”). (See note.)

Malfunction: 10 to 55 Hz, 0.3-mm double amplitude (in X, Y, and Z directions for 10 minutes each)

Destruction: 10 to 25 Hz, 2-mm double amplitude (in X, Y, and Z directions for 2 hours each)

Malfunction: 98 m/s²(approx. 10 G) in X, Y, and Z directions

Destruction: 294 m/s²(approx. 30 G) in X, Y, and Z directions

Set time value

Shock

Test current

(reference only)

Operating time

Setting

Approx. 30% of the maximum setting value

characteristics of

operating time

Service life

Electrical: 10,000 operations

Ambient temperature

Operating: −10 to 60 °C (with no icing)

Storage: −25 to 65 °C

Humidity

Altitude

35% to 85%

2,000 m max.

Note: This means that no malfunction occurs with the open-phase element, but the operating value of the overload element may vary.

K2CM

Connections

■ Voltage Reverse-phase Detection Models

Terminal Arrangement

Manual Operation Low-voltage Circuit (High-

capacity Motor)

200 VAC

50/60Hz

Ta Tc Tb

Stop

Start

Output contacts Control power

(SPDT) supply

Magnet

contactor

• Perform the external connections by referring to the examples given below.

• Obtain the control power supply from the same phase as the power supply to

the magnet contactor coil.

• Connect the phase advancing capacitors closer to the power supply than the

current transformer, as shown in the examples.

• Tighten the terminal screws to a torque of 0.98 N·m max. (The appropriate

tightening torque is 0.49 to 0.67 N·m.)

Phase advancing

capacitor

Current converter for

Alarm

buzzer

measuring device @/5A

• Use of insulated solderless terminals is recommended for connection to the

Relay terminals (M3.5).

Ta Tc Tb

Note: 1. In principle, the K2CM must be surface mounted with the terminal

block facing downward.

Motor

Motor protective relay

2. Use M5 screws with spring washers and flat washers for mounting.

Tighten the screws to a torque of 1.77 N·m max. (The appropriate

tightening torque is 1.08 to 1.57 N·m.)

Automatic Operation Low-voltage Circuit

200 VAC

50/60Hz

Manual Operation Low-voltage Circuit

200 VAC

50/60Hz

Stop

Automatic

contact

Start

Magnet

contactor

Magnet

contactor

Phase advancing

capacitor

Alarm

buzzer

Phase

advancing

capacitor

Alarm

buzzer

Ta Tc Tb

Motor protective relay

Motor

Manual Operation High-voltage Circuit

Manual Operating Low-voltage Circuit (

Start)

3, 300 VAC

50/60Hz

Transformer @/200V

200 VAC

50/60Hz

High-tension

X/a

Stop

Start

fuse

Stop

High-voltage

magnet contactor

Start

Auxiliary

relay

Magnet

contactor

Phase advancing

capacitor

Current converter for

measuring device @/5A

Alarm

buzzer

Alarm

buzzer

Phase

advancing

capacitor

Ta Tc Tb

High-voltage

motor

Motor protective relay

changeover

Note: Connect the phase advancing capacitor on the power supply

side of the Motor Protective Relay as shown in the above dia-

grams.

K2CM

■ Current Reverse-phase Detection Models

Terminal Arrangement

Manual Operation Low-voltage Circuit (High-

capacity Motor)

200 VAC

50/60Hz

S1 S2

Stop

Start

Output contacts Control power

(NO and NC) supply

Magnet

contactor

• Perform the external connections by referring to the examples given below.

• Connect the phase advancing capacitors closer to the power supply than the

current transformer as shown in the examples.

• Tighten the terminal screws to a torque of 0.98 N·m max. (The appropriate

tightening torque is 0.49 to 0.67 N·m.)

• Use of insulated solderless terminals is recommended for connection to the

Relay terminals (M3.5).

Phase advancing

capacitor

Current converter for

Alarm

buzzer

measuring device @/5A

Note: 1. In principle, the K2CM must be surface mounted with the terminal

block facing downward.

Motor

2. Use M5 screws with spring washers and flat washers for mounting.

Tighten the screws to a torque of 1.77 N·m max. (The appropriate

tightening torque is 1.08 to 1.57 N·m.)

Motor protective relay

Manual Operation Low-voltage Circuit

Automatic Operation Low-voltage Circuit

200 VAC

50/60Hz

200 VAC

50/60Hz

Stop

Start

Automatic

contact

Magnet

contactor

Magnet

contactor

Phase

advancing

capacitor

Phase advancing

capacitor

Alarm

buzzer

Alarm

buzzer

c2 s1 s2

Motor protective relay

Motor

Manual Operating Low-voltage Circuit (

Start)

Manual Operation High-voltage Circuit

3,300 VAC

50/60Hz

200 VAC

50/60Hz

Transformer @/100V

High-tension

fuse

X/a

Stop

Start

Stop

Start

High-voltage

magnet contactor

Magnet

contactor

Auxiliary

relay

Alarm

buzzer

Phase advancing

capacitor

Phase

advancing

capacitor

Current converter for

measuring device @/5A

c2 s1 s2

Alarm

buzzer

Motor protective relay

changeover

c2 s1 s2

High-voltage

motor

Motor protective relay

Note: Connect the phase advancing capacitor on the power supply

side of the Motor Protective Relay as shown in the above

diagrams.

K2CM

Output Circuits

■ Internal Circuit and Operation Description

Voltage Reverse-phase

Inverse and Instantaneous

Types

Detection Models

Reset button

With the voltage reverse-phase

detection models, the circuit

Test button

section enclosed by

in the

As shown on the right, the K2CM

detects abnormalities in motor M

by checking its line current. The

motor’s current signal is detected

by the current transformer and is

processed separately for each

phase and input to the respec-

tive circuits. In each circuit, par-

allel judgement of failure such as

overcurrent, open-phase, or

diagram on the left is configured as

To each

circuit

X/b2

X/a1

shown below. The circuit section

enclosed by

is not used.

Voltage

circuit

for test

To OR circuit

reverse-phase (see note) is

To each circuit

made based on the input signals.

If a failure is detected in a circuit,

the circuit’s output is input to the

indication circuit to illuminate the

corresponding LED indicator and

also input to the relay drive cir-

cuit to drive relay X, resulting in a

trip signal to be externally output

from it. The three major circuits

are described below.

Overcurrent

indicator

Instantaneous Type

LED

Open-phase

indicator

With instantaneous-type

models, the circuit section

LED

Reverse-

phase

indicator

enclosed by

configured as shown below.

To each circuit

Note: Applies to current reverse-

phase detection models

only.

1) Overcurrent Circuit

Overcurrent Detecting Circuit

Starting Time Setting Circuit (Instantaneous Type)

This circuit detects when the current reaches the overcurrent operat-

ing level (115% of the set current value).

This circuit performs time setting using the VR for setting the start-up

lock time and obtains fixed time-limit characteristics using an RC

time-limiting circuit.

Time Setting Circuit (Inverse Type)

Operation at start-up is shown in the figure below. After the motor

turns ON at point A, the motor’s starting current exceeds the start-up

operating value and so the RC time-limiting circuit starts charging. If,

for example, the motor current descends below the start-up operat-

ing value (30% max. of the set current value) at point B before the

start-up lock time, tc, has elapsed, the RC time-limiting circuit is reset

immediately and when the motor current rises above the start-up

operating value again at point C, the RC time-limiting circuit starts

charging again. After the start-up lock time has elapsed (at point D),

instantaneous operation is enabled. At the start of operation, the

motor current is at its peak immediately after operation starts. It then

lowers and settles at the rated current. The peak current is about 5 to

6 times the rated current and takes from several seconds to several

tens of seconds to settle to the rated current. This time varies largely

depending on type of motor and the nature of motor load (wt). There-

fore, it is necessary to obtain the motor’s starting time for operation

with the load and to set a start-up lock time that allows for a margin of

error. Do not set an unnecessarily long start-up lock time. If the start-

up lock time is too long and an accident due to overcurrent occurs at

the start of operation, the trip signal will not be output until the start-

up lock time has elapsed, possibly resulting in motor burnout.

This circuit performs time setting using the VR (variable resistor) for

the operating time setting and obtains inverse-type characteristics

using an RC time-limiting circuit. The operating time can be set within

a range from 2 to 10 s or 8 to 40 s by operating the setting switch

using a VR. The VR covers a time range 5 times the standard range.

Start-up Detecting Circuit (Instantaneous Type)

Instantaneous-type models output a trip signal instantaneously when

the motor current exceeds the overcurrent operating value (115% of

the set current value). At the start of motor operation, a starting cur-

rent several times the rated current flows and so to prevent the motor

circuit being tripped by the starting current, instantaneous operation

is not enabled until a fixed time tc has elapsed, as shown in the fig-

ure. Instantaneous operation starts after tc has elapsed. Motor start-

ing time “to” varies, depending on motor type, within a range from

several seconds to several tens of seconds. There are even slight dif-

ferences in starting time between the same type of motors and so be

sure to set tc so that to to<tc is satisfied. If to>tc, the motor circuit will

be tripped after tc has elapsed. The fixed time limit tc at the start of

motor operation is called “lock time”. The start-up detecting circuit

detects the starting operation level (30% max. of the set current

time).

Overcurrent

operating value

Start-up

operating value

Motor

current

Overcurrent operating value

Motor current

Start

Operation

mode

to: Motor's starting time

tc: Lock time at start of operation

Start

Output

tc: Start-up lock time

**: Instantaneous operation enabled

Instantaneous operation enabled

*: Fixed time-limit operation

Trip

Operating mode

Fixed time-limit

operation

K2CM

2) Open-phase Circuit

Open-phase

switch

"High"

Maximum phase of

current: R phase = 1.0

"High"

operating

area

T phase

1.0

"Low"

Open-phase Level Detecting Circuit

"Low"

operating

area

Non-operating

This circuit detects when the current reaches the open-phase operat-

ing level (85% max. of the set current value). Therefore, open-phase

is not detected until the maximum phase of the current exceeds 85%

of the set current value.

area

25%

35%

Open-phase Detecting Circuit

0.5

Output of the maximum value detecting circuit is divided and used as

reference values for comparison with the output of the rectifier/

smoothing circuits for the respective phases. If a phase has a value

lower than the reference value, the K2CM judges it to be open-phase

and outputs an open-phase signal.

60%

The following imbalance factors can be selected by setting the open-

phase switch.

0.5

1.0

S phase

“High” . . Operating imbalance factor: 35 10%

“Low”. . . Operating imbalance factor: 60% min.

3) Reverse-phase Circuit

The imbalance factor can be easily obtained from the following

graph. In the graph, the horizontal axis indicates the maximum phase

of the current whereas the two vertical axes indicate the remaining

two phases. The maximum phase of the current is taken to be 1.0 as

a reference point. The imbalance factor is obtained as a percentage

from the curve around the center of the graph. Obtain the imbalance

factor for a motor current with I_R= 100 A, I_S= 70 A, and I_T= 60 A as

follows:

1. Current Reverse-phase Detection Models

Reverse-phase Level Detecting Circuit

This circuit detects whether the current is in the operating level (50%

max. of the set current value) as a precondition to detect the reverse-

phase.

1. On the R axis, locate point A, where I_R= 1.0.

2. Move from point A to point B, where I_S= 0.7 on the S axis.

3. On the T axis, locate point C, where I_T= 0.6.

Reverse-phase Detecting Circuit

The current reverse-phase detecting method is employed for detect-

ing reverse-phase as shown below. After the motor starts operating,

the current phase becomes transiently unstable during T1 (approx.

0.4 s) and so reverse-phase detection is not performed during this

period but it is performed during T2 (approx. 0.1 s). After T2 has

elapsed, reverse-phase detection is not performed. For this reason,

this method cannot be applied to cases where instantaneous

reverse-phase is not permitted. When a reverse-phase is detected,

the relay is held in the latched state even after the motor current

stops (in both manual and automatic release types).

4. Follow the curves that pass through points B and C and locate the

intersection point D.

5. Locating the point corresponding to point D on the imbalance fac-

tor curve gives an imbalance factor of 36%. Take the maximum

phase of current on the horizontal axis without considering axes

R, S, and T.

1.6

1.5

1.4

1.3

1.2

1.6

1.5

1.4

1.3

1.2

Start

Motor

T²

1.1

1.0

0.9

1.1

1.0

0.9

Non-detecting area

Detecting area

T (R, S) 0.8

0.8 S (T, R)

0.7 Point B

0.6

2. Voltage Reverse-phase Detection Models

5.0

0.7

10.0

15.0

Reverse-phase Detecting Circuit

0.6

0.5

0.4

Point C

20.0

25.0

Reverse-phase detecting is performed by using the voltage reverse-

phase detection method.

0.5

30.0

35.0

40.0

0.4

Point D

45.0

50.0

55.0

60.0

65.0

70.0

0.3

0.2

0.1

0.3

0.2

0.1

Reverse-phase output

75.0

80.0

85.0

90.0

95.0

0.0

0.0 0.1

0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

Point A

R (S, T)

Generally, in open-phase detection, detecting a complete open-

phase is sufficient. In such a case, set the open-phase switch to the

“Low” position. If using the motor in an imbalanced condition causes

problems, or when detecting internal open-phases of a delta-con-

nected motor, set the switch to the “High” position. Depending on the

motor’s load condition and the imbalance of the power supply, how-

ever, special consideration may be required for the detection of inter-

nal open-phases in delta-connected motors. Consult your OMRON

representative before using this method. When a transformer is con-

nected as a load, the harmonics increase at low loads. Therefore, in

such a case, set the open-phase switch to the “Low” position.

By voltage division within the above RC phase circuit, the output

becomes 0 V in the normal state or 1.5 V_uvin the reverse-phase

state. Using the output from this circuit, the reverse-phase level

detecting circuit detects when the current reaches the reverse-phase

operating level (80% or less of the control power supply).

K2CM

Nomenclature

Trip Indicator

In normal operation, only the upper half of the display window is colored orange,

whereas when the motor circuit has tripped, the entire display window becomes orange.

Current-setting Knob

10 (side)

• By operating the setting knob, set the current value to

be equal to the rated current of the motor to be used.

The current-setting knob uses the same scale as the

rated current. Therefore, the operating value will be

115% of the set current value.

Example: Operating current value

= 12 × 1.15 (115%) = 13.8 A

• The List of Current Settings shows an example. The

rated current differs depending on the motor’s type,

construction, manufacturer, etc. Therefore, set the

operating current after checking the specifications of

the motor.

Time-setting knob*

8 7 6

Test Button

Reset Button

• With manual resetting models, when the motor circuit trips during

normal operation or test operation, the operation indicators and

the output relay can be immediately reset by pressing the reset

button.

• When the motor circuit trips due to reverse-phase with automatic

resetting models, the operation indicators and the output relay can

be immediately reset by pressing the reset button.

• Reset button operation is ineffective when the operation power

supply is OFF. When the motor circuit trips during normal opera-

tion, identify the abnormal input function by checking the LED indi-

cators, then turn OFF the power switch of the main circuit and

proceed with troubleshooting. After the abnormality is removed,

turn ON the power switch of the main circuit to reset the K2CM.

Inverse Type

• Operation checks of the overcurrent function can be performed.

• Pressing the test button for the time-setting value will cause the motor

circuit to trip.

• With manual resetting models, even if the test button is released after

the motor circuit has tripped, the circuit remains tripped, whereas with

automatic resetting models, the motor circuit continues operating and

the output relay releases.

• Be sure to perform the test operation with the overcurrent switch set to

ON. Set both the open-phase and reverse-phase switches to OFF. If

one of these switches is set to ON, the motor circuit may trip if an

open-phase or reverse-phase occurs before an overcurrent does.

Instantaneous Type

• Perform the test operation with input current at 0 and the overcurrent

switch set to ON.

Deciding the Number of Primary Conductor Passes

• When using a motor with a small current rating, decide the num-

ber of primary conductor passes through the current transformer

holes and the tap setting by referring to the List of Current Set-

tings.

• Pass all the three wires through the respective holes of the current

transformer. Basically, the wires should be passed through the

specified holes. If this is difficult, however, they can be passed

through any holes provided that the phase order is R, S, and T.

• Pressing the test button for the set start-up lock time will cause the

motor circuit to trip.

• With manual resetting models, even if the test button is released after

the motor circuit has tripped, the circuit remains tripped, whereas with

automatic resetting models, the motor circuit continues operating and

the output relay releases.

Time-setting Knob

1 pass

2 passes

• Set the required operating time by operating the time-setting knob.

(With instantaneous-type models, the set operating time is used as the

start-up lock time).

Note: 1. The setting scale is the op-

erating time when 600% of

• The scale multiplying factor

can be selected by the time

scale multiplying factor

switch.

the current value is input.

• If the wires are passed through the holes only once, a current within

the full scale of the current-setting knob can be set. If they are

passed more than once, however, the current setting range will

change according to the number of passes. The current setting

range when the number of conductor passes is n can be obtained

by dividing the full scale of the current-setting knob by n. For exam-

ple, the current setting range of the K2CM-@@L@ is 8 to 26 A when

the wires are passed only once. This range is 4 to 13 A when the

wires are passed twice, 2 to 6.5 A when the wires are passed four

times, and 1 to 3.25 A when the wires are passed eight times.

The wires can be passed through the holes any number of times. It

is convenient for the calculation, however, if the number of passes

is 2, 4, or 8.

2. The required operating

time varies depending on

the type of motor, load con-

dition, etc. You can take the

time from when the motor

starts to when the motor

enters the steady state as

a guide for setting this val-

ue. When setting the oper-

ating time for submersible

motors, which require very

short operating times, con-

sult the manufacturer to

obtain the correct operat-

ing time. An operating time

shorter than 5 s can be

used as a rough guide.

Scale

multiplying multiplyingfactor

factor switch

Time scale

value

× 1 (s) × 4 (s)

• The signal from a high-voltage motor is input to the Motor Protec-

tive Relay via an external current transformer. In this case, the cur-

rent can be set in the same manner as above by dividing the rated

current of the high-voltage motor by the transformation ratio of the

current transformer.

K2CM

LED Indicators

Reverse-phase

detecting

Enabled

Disabled

When the motor circuit trips due to overcurrent, open-phase, or

reverse-phase, the respective LED indicator lights (continuously).

The overcurrent indicator also indicates the start of operation.

OFF

function

Reverse-phase

polarity

Normal

The motor circuit trips at reverse-

phase when a reverse-phase is

detected.

Overcurrent operating value

(115% of current-setting value)

Reverse Used when a reverse-phase

connection is made in the power line

of the motor at a point before the

current transformer (including

Motor current

Bright

Dimmed

external current transformer).

If the K2CM detects reverse-phase although the motor is rotating in

the forward direction (e.g., because of incorrect wiring of power

lines), set the reverse-phase polarity switch to the “Reverse” position

to enable normal operation.

Start

Trip

• With the inverse-type models, when the motor current exceeds the

overcurrent operating value, the overcurrent indicator blinks at the

bright level and then remains lit at the dimmed level. After the oper-

ating time has elapsed, with the manual resetting models, the

motor circuit trips and the overcurrent indicator remains lit at the

bright level, whereas with automatic resetting models, the indicator

remains lit at the bright level until the motor current descends below

the resetting value.

Phase condition

Connections

Normal

Reverse

(A)

(C)

Motor

relay

(B)

Motor

relay

(D)

Motor

relay

• Since the indicator status is not stored in memory when the opera-

tion power supply is turned OFF, be sure to check which indicators

were illuminated when the motor circuit was tripped.

Reverse-phase

polarity switch

position

Normal

The functions of the K2CM can be used in the following seven combi-

nations. For each function, turn ON the corresponding setting switch.

Function Overcurrent

Combination

Open-phase Reverse-phase

Trip

None

Yes

None

Direction of

motor rotation

Forward

Reverse

(See below.)

Reverse

Reverse Reverse Reverse Reverse

Coun- Reverse-

ter-

mea-

sure

phase

polarity

switch

position

Wiring

changed changed changed changed

at (A). at (B). at (C). at (D).

Wiring

When the setting switches for overcurrent, open-phase, or reverse-

phase function are turned OFF, the following functions becomes

invalid.

Function setting switch

set to OFF

Invalid function

Direction of

Forward

Overcurrent

Time setting and multiplication

“High” and “Low” imbalance factors

“Forward” and “Reverse” function

motor rotation

Open-phase

Reverse-phase

Note: The K2CM detects reverse-phase at a point before the current

transformer. If a reverse connection is made at the load side far

from the current transformer and the motor rotates in the re-

verse direction, the K2CM does not detect the reverse-phase.

1. Overcurrent Setting Switches

These switches select the overcurrent setting and the multiplying fac-

tor linked with operating time setting.

Reverse-detectable Range

Overcurrent

detecting function

Enabled

Disabled

Detectable:

Reverse-phase state can be detected with the

motor protective relay only on the power supply

side.

OFF

Time setting

multiplying factor

× 4 (s) Time setting scale value × 4 = 8 to 40 s

× 1 (s) Time setting scale value × 1 = 2 to 10 s

Undetectable: Reverse-phase state on the motor side cannot

be detected with the motor protective relay.

* The reverse-phase polarity switching function is applicable to cur-

rent reverse-phase detection models only.

2. Open-phase Setting Switches

These switches select the open-phase detecting function and the

“High” or “Low” current imbalance factor for operation.

Open-phase

detecting

function

Enabled

Disabled

OFF

Imbalance factor High

Low

The motor circuit operates at an

operating imbalance factor of 35

10%.

The motor circuit operates at an

operating imbalance factor of 60%.

3. Reverse-phase Setting Switches

These switches select the reverse-phase detection function and

reverse-phase polarity. By selecting the reverse-phase polarity

accordingly, the K2CM can operate normally without changing the

connections when wired with the order of the phases reversed.

K2CM

Engineering Data

Overload Operating Time

Characteristics for Instantaneous Type

Characteristics for Inverse Type

Time scale multiplying factor

(× 4) (× 1)

280 70

0.2

This graph shows the

behavior when the

current changes from

100% of the current-

setting value to the

percentage shown on

the horizontal axis.

240 60

Time scale

200 50

160 40

120 30

80 20

0.1

40 10

100

200

300

400

500

600

700

100

200

300

400

500

600

700

Motor current (percentage of current-setting value)

Typical Characteristics of

Open-phase Operation

2.0

Typical Characteristics of

Reverse-phase Operation

0.6

This graph shows the behavior when

the current changes from 100% of the

current-setting value to the percentage

shown on the horizontal axis.

the current changes from 100% of the

current-setting value to the percentage

shown on the horizontal axis.

0.5

0.4

0.3

0.2

0.1

1.0

100

200

300

400

500

600

700

100

200

300

400

500

600

700

Motor current (percentage of current-setting value)

K2CM

Dimensions

Note: All units are in millimeters unless otherwise indicated.

Surface-mounting Models

126

60 52 46.5

11.5

48.5

Six, M3 terminal screws

Four, 6-dia. mounting holes or

four, M5 mounting-screw holes

120

52 0.5

80 0.5

33.5

Three, 20-dia. holes

Operating Procedures

■ Operation, Setting, and Indication

Based on the current value of the motor to be used, perform the setting of each item of the K2CM Motor Protective Relay.

List of Current Settings (when using a 200-VAC motor)

Type*

K2CM-@@LS@

K2CM-@@L@

K2CM-@@M@

K2CM-@@H@

Number of passes

Setting Time scale value

2 to 8

8 to 26

8 to 26 4 to 13 2 to 6.5 1 to 3.25

20 to 65

50 to 160

Current setting range (A)

Motor*** Rated output (kW) Rated current (A)**

0.2

0.4

0.75

1.5

2.2

3.7

5.5

7.5

1.8

2.8

4.2

7.3

16.1

18.5

117

143.0

The squares (@) represent the symbols defined under Model Number Legend.

** The rated current is the current at full load.

*** Supply: Low-voltage 3-phase basket type inductive motor, full-load characteristics of 200 VAC, 4-pole, totally-enclosed.

Note: When using a large-capacity or high-voltage motor whose capacity is 45 kW or more, calculate the rated current/alternating current ratio by

converting with the alternating current ratio of the external current transformer.

K2CM

Testing Method

■ Current Reverse-phase Detection Models

The operating characteristics listed in the table below are

tested using the circuit shown on the right. Decide the number

200 V

50/60 Hz

(3-phase)

of conductor passes through the holes of the current trans-

former in accordance with the operating current range of the

Motor Protective Relay and by referring to the current setting

method described under Operation, Setting, and Indication.

100 VAC

50/60Hz

SW1

3φSD

100 V

a1 c1 b2 c2 s1 s2

Minimum set time is 2 s.

K2CM Motor Protective Relay

3φSD: Three-phase voltage regulator (5 to 15 A) R1: Variable resistor (50 Ω, 400 W + 400 W)

AC ammeter (5 A)

AC voltmeter (300 V)

Cycle counter

Fixed resistor (50 Ω, 400 W + 400 W)

Knife switch (3-phase)

Toggle switch

CC:

SW2

Auxiliary relay (15 A)

Test item

Test procedure

Operating value

Operating time

Over-

current

Inverse type

1. Turn ON SW1.

2. Turn ON SW2 to operate auxiliary relay Y.

1. Turn ON SW1 and SW2. Increase the current to 600% of

the set current value by adjusting the voltage regulator.

Turn OFF SW1 and SW2.**

3. Gradually increase the current by adjusting the voltage

2. Turn ON SW1.

regulator. With inverse-type models, read the value of the

current when the overcurrent LED indicator blinks. With 3. Turn ON SW2 and read the position (i.e., time) of the

instantaneous-type models, read the value when it lights

(continuously).*

pointer of cycle counter CC when CC is stopped by the

operation of the K2CM. The read time is the operating time

for inverse-type models and the lock time of the instanta-

neous-type models.

4. Turn OFF SW1 and SW2.

Instantaneous

type

1. Turn ON SW1 and SW2. Increase the current to 100% of

the set current value by adjusting the voltage regulator.

Turn OFF SW1 and SW2.

2. Turn ON SW1 and SW2 again and wait 2 seconds mini-

mum.

3. Using the voltage regulator, abruptly increase the current

to 140% of the set current value. Confirm that the K2CM

performs instantaneous operation.

4. Turn OFF SW1 and SW2.

Open-phase

1. Open (disconnect) any one of the input phases for the cur- 1. Open (disconnect) any one of the input phases for the cur-

rent transformer. rent transformer.

2. Turn ON SW1 and SW2. Gradually increase the current by 2. Turn ON SW1 and SW2. Increase the currents of the other

adjusting the voltage regulator.

two phases to 115% of the set current value by adjusting

the voltage regulator. Turn OFF SW1 and SW2 temporarily.

3. Confirm that the K2CM operates at a current no greater

than 85% of the set current value and that, at this current, 3. Turn ON SW1 and SW2 again. Read the position (i.e.,

the trip indicator is orange and the open-phase LED indica-

time) of the pointer of cycle counter CC when CC is

stopped by the operation of the K2CM.

tor lights.

4. Turn OFF SW1 and SW2.

Reverse-phase

1. Interchange any two phases at a position closer to the 1. Interchange any two phases at a position closer to the

power supply than the current transformer. (In the above

figure, phases U and V are interchanged as shown by the

dotted lines.)

power supply than the current transformer. (In the above

figure, phases U and V are exchanged as shown by the

dotted lines.)

2. Turn ON SW1 and SW2. Decrease the current to 50% of 2. Turn ON SW1 and SW2. Increase the current to 100% of

the set current value by adjusting the voltage regulator.

Then turn OFF SW1 and SW2 temporarily.

the set current value by adjusting the voltage regulator.

Then turn OFF SW1 and SW2 temporarily.

3. Turn ON SW1 and SW2 again. Confirm that the K2CM 3. Turn ON SW1 and SW2 again. Read the position (i.e.,

operates, the trip indicator is orange, and that the reverse-

phase LED lights.

4. Turn OFF SW1 and SW2.

time) of the pointer of cycle counter CC when CC is

stopped by the operation of the K2CM.

4. Turn OFF SW1 and SW2.

* Balance the currents between phases by adjusting variable resistor R1.

** If a current equal to 600% of the set current value cannot be attained by adjusting the voltage regulator, increase the number of conductor passes

through the holes of the current transformer.

K2CM

■ Voltage Reverse-phase Detection Models

The operating characteristics listed in the table below are tested

using the circuit shown on the right. Decide the number of conductor

passes through the holes of the current transformer in accordance

with the operating current range of the Motor Protective Relay and by

referring to the current setting method described under Operation,

Setting, and Indication.

200 V

50/60 Hz

(3-phase)

100 VAC

50/60 Hz

3φSD

100 V

V W

Minimum set time is 2 s.

K2CM Motor Protective Relay

3φSD: Three-phase voltage regulator (5 to 15 A)

R1: Variable resistor (50 Ω, 400 W + 400 W)

AC ammeter (5 A)

AC voltmeter (300 V)

Cycle counter

Fixed resistor (50 Ω, 400 W + 400 W)

Knife switch (3-phase)

Toggle switch

CC:

Auxiliary relay (15 A)

Test item

Test procedure

Operating value

Operating time

Over-

current

Inverse type

1. Turn ON SW1.

2. Turn ON SW2 to operate auxiliary relay Y.

1. Turn ON SW1 and SW2. Increase the current by adjusting

the voltage regulator to 600% of the set current value.

Turn OFF SW1 and SW2.**

3. Gradually increase the current by adjusting the voltage

2. Turn ON SW1.

regulator. With inverse-type models, read the value of the

current when the overcurrent LED indicator blinks. With 3. Turn ON SW2 and read the position (i.e., time) of the

instantaneous-type models, read the value when it lights

(continuously).*

pointer of cycle counter CC when CC is stopped by the

operation of the K2CM. The read time is the operating time

for inverse-type models and the lock time of the instanta-

neous-type models.

4. Turn OFF SW1 and SW2.

4. Turn OFF the SW1 and SW2.

Instantaneous

type

1. Turn ON SW1 and SW2. Increase the current to 100% of

the set current value by adjusting the voltage regulator.

Then turn OFF SW1 and SW2.

2. Turn ON SW1 and SW2 again and wait 2 seconds mini-

mum.

3. Using the voltage regulator, abruptly increase the current

to 140% of the set current value. Confirm that the K2CM

performs the instantaneous operation.

4. Turn OFF SW1 and SW2.

Open-phase

1. Open (disconnect) any one of the input phases for the cur- 1. Open (disconnect) any one of the input phases for the cur-

rent transformer. rent transformer.

2. Turn ON SW1 and SW2. Gradually increase the current by 2. Turn ON SW1 and SW2. Increase the currents of the other

adjusting the voltage regulator.

two phases to 115% of the set current value by adjusting

the voltage regulator. Turn OFF SW1 and SW2 temporarily.

3. Confirm that the K2CM operates at a current no greater

than 85% of the set current value and that, at this current, 3. Turn ON SW1 and SW2 again. Read the position (i.e.,

the trip indicator is orange and the open-phase LED indica-

time) of the pointer of cycle counter CC when CC is

stopped by the operation of the K2CM.

tor lights.

4. Turn OFF SW1 and SW2.

Reverse-phase

1. Change the phase sequence to reverse-phase by switch- 1. Put the voltage input in the reverse-phase state.

ing the U and W input terminals of the K2CM as shown by

the dotted lines.

2. Turn ON SW1 and SW2 and read the position of the

pointer of cycle counter CC when CC is stopped.

3. Turn OFF SW2.

2. Turn ON SW1 and SW2 and confirm that the K2CM oper-

ates.

3. Add a three-phase voltage regulator to the U, V, and W ter-

minal inputs.

4. Adjust the voltage regulator and confirm that the K2CM

operates at less than 80% of the rated supply voltage.

* Balance the currents between phases by adjusting variable resistor R1.

** If a current equal to 600% of the set current value cannot be attained by adjusting the voltage regulator, increase the number of conductor passes

through the holes of the current transformer.

K2CM

Safety Precautions

• A power supply with a frequency other than commercial frequency

■ Correct Use

cannot be used as the control power supply.

• The operation check using the test button is intended to check the

operation of the overcurrent functions. Therefore, be sure to turn

ON the overcurrent switch. Also, at this time, turn OFF the open-

phase switch and reverse-phase switch to prevent unnecessary

operations from being performed.

• Use of circuits containing a high percentage of harmonics, such as

circuits incorporating SCR control circuits, VVVF inverters, or recti-

fiers, may cause errors and malfunctions. Consult your OMRON

representative for details.

• When applying the K2CM to the protection of a high-voltage motor

or low-voltage, high-capacity motor, use an external rectifier that

does not saturate at currents up to 600% of the rated motor current

and thus permits a large overcurrent; otherwise, the K2CM will out-

put a tripping signal because of imbalanced operation when an

overcurrent occurs and, with reverse-type models, the motor may

be damaged by burning.

• The operating time of inverse-type models and the lock time of the

instantaneous-type models depend upon the set operating time.

Therefore, do not hold down the test button for more than the set

operating time.

• The reverse-phase can be detected in the wiring up to the current

transformer (including an external current transformer). Check the

wiring between the current transformer and the motor before start-

ing the motor.

• Never tamper with the trip indicator. Use the reset switch to reset

the K2CM.

• Current reverse-phase detection models cannot be used in applica-

tions that do not allow even momentary reversals of motor direc-

tion.

• Jogging of the motor can be performed. For details, consult your

OMRON representative.

• When using the K2CM to control inching shorter than 0.5 s, the

reverse-phase level detection circuit may operate. In this case, be

sure to use the K2CM with the reverse-phase switch set to OFF.

• When a power failure occurs in the control power supply, the K2CM

is not reset even when the reset switch is pressed. This is not an

error. The K2CM can be reset only when control power is applied to

it.

• Be sure to remount the front cover after detaching it for operating or

setting the switches on the front panel.

• The rectifier and control circuits are combined by tightening the two

screws on the right and left sides. Never loosen these screws.

• The K2CM is basically intended to protect three-phase loads. Its

overcurrent function, however, can also be applied to single-phase

loads. In this case, the conductors can be passed through the holes

in any direction and sequence.

• When applying the K2CM to a circuit with a high imbalance factor

due to the nature of the power supply or load, actually measure the

imbalance factor and select the open-phase sensitivity accordingly

(i.e., set the open-phase switch to either the high or low position).

The K2CM cannot be used if the imbalance factor is 60% or higher.

• The variable resistors used to make settings are equipped with

mechanisms to stop them rotating outside the valid scale range. Do

not rotate the variable resistors at a torque of 1 kg·cm or more.

• When using the K2CM-@@@A (instantaneous, automatic reset-

ting), be sure to apply power to the Motor Protective Relay from the

same power line as the magnet contactor for switching the motor.

• Be sure to provide the control power supply for the K2CM-@@@@V

(voltage reverse-phase detection) from the same line as the motor.

• If current reverse-phase detection models are used in a circuit with

distorted current waveforms, the reverse-phase element may per-

form an unwanted operation. In such circuits, use of the K2CM-

@@@@V (voltage reverse-phase detection) is recommended

because it is not affected at all by current waveform distortion.

• When applying the K2CM to the protection of three-phase trans-

formers, give consideration to the imbalance factor due to single-

phase loads.

Combination

Function setting switches

LED indicators

NOTE

Overcur-

rent

Open-

phase

Reverse- Overcur-

phase rent

Open-

phase

Reverse-

phase

If the inputs for combinations of two or more functions are

simultaneously generated, the K2CM detects the inputs in

the order reverse-phase, open-phase, overcurrent. Take

combination 4 as an example. If the open-phase and over-

current occur at the same time, there is insufficient time to

detect the overcurrent because the open-phase is first de-

tected and the K2CM outputs the tripping signal (causing

the magnet contactor to turn off). Therefore, the overcur-

rent indicator does not light.

OFF

K2CM

■ Maintenance and Inspection

The K2CM Motor Protective Relay offers very stable characteristics.

To maintain these characteristics for a long time, the following

inspections are recommended.

Q & A

What is the VA consumption of the CT section?

Daily Inspection

The purpose of daily inspection is to discover causes of failure before

using the Motor Protective Relay. This inspection depends somewhat

on the perception of the operator as it includes visual checking, etc.

The consumption is 0.4 VA/phase max. for any CT section.

Classification

Connections

Inspection items

What action is required if an inverter circuit is used?

Loosening, damage, and dust collection at

screw terminals, damage to wiring insulation

sheaths, excessive force applied on wirings,

adhesion of foreign objects to terminal

screws

As shown in the following figure, insert the K2CM and turn

OFF the reverse-phase switch before using the K2CM.

Motor Protective Relay Adhesion of foreign objects and dust to the

operation panel, shift of set value, indication

status of operation indicators and trip indica-

tor, presence/absence of front cover, loos-

ening of screws combining rectifier and

Inverter

K2CM

Motor

control circuits, deformation of case, abnor-

mal temperature on housing surface

• Always insert the K2CM on the secondary side (load side)

of the inverter.

External rectifier

Loosing of terminals, unusual odor, discolor-

ation of surface

Mounting Inverter power

location supply

Inverter load

Element

Periodic Inspection

This inspection is performed by turning OFF the power at regular

intervals to check the aging caused by long-time operation. It is rec-

ommended that periodic inspection is performed once a year.

Overcurrent

Open-phase

Reverse-phase

Conditionally OK

• Error may occur in the operating values depending on the

inverter specifications and settings. Set the values after

performing tests and confirming operation.

Motor Protective Relay

Classification

Construction

Inspection item

• The current waveform on the inverter power supply side is

distorted, so the K2CM may malfunction.

Adhesion of dust and foreign objects to

terminals, cracks in insulators around

terminal block, burn damage to wirings,

damage to setting knobs, selector

switches, test button, and reset button,

damage to insulators of solderless ter-

minals, rust and discoloration of screw

terminals

• The inverter load side contains a large high-frequency

component, so the K2CM may malfunction due to phase

reversal.

• Depending on the specifications and settings of the

inverter, overloads and open phases may also cause the

K2CM to malfunction.

Operating characteristics

Insulation resistance

Refer to Testing Method.

• Using a K2MR is recommended to protect the inverter

motor.

Between terminals and mounting panel

Operation check with test Checking of operating time, operation

button

indicators, and trip indicator

What action is required if single phase is used?

External Rectifier

Check for adhesion of dust and foreign objects, damage to wirings by

burning, and loosening of mounting screws.

The following describes the operating procedure for using a

single phase with the K2CM.

• Connection Method

Pass wires through any two of the three holes on the

K2CM.

K2CM

Motor

• If a single phase is used, set the open-phase and reverse-

phase switch to OFF. Make the overload settings so that

they match the motor current.

• Do not apply control power supply voltage between the V-

W terminals if a model with voltage reverse-phase

detection is used.

ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.

To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.

In the interest of product improvement, specifications are subject to change without notice.

Read and Understand This Catalog

Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or

comments.

Warranty and Limitations of Liability

WARRANTY

OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if specified)

from date of sale by OMRON.

OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY, OR

FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS

DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER

WARRANTIES, EXPRESS OR IMPLIED.

LIMITATIONS OF LIABILITY

OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR COMMERCIAL LOSS

IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT

LIABILITY.

In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.

IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS

OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT

SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.

Application Considerations

SUITABILITY FOR USE

OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of products in the customer's

application or use of the products.

At the customer's request, OMRON will provide applicable third party certification documents identifying ratings and limitations of use that apply to the

products. This information by itself is not sufficient for a complete determination of the suitability of the products in combination with the end product,

machine, system, or other application or use.

The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all possible

uses of the products, nor is it intended to imply that the uses listed may be suitable for the products:



Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not described in this catalog.

Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles,

safety equipment, and installations subject to separate industry or government regulations.



Systems, machines, and equipment that could present a risk to life or property.

Please know and observe all prohibitions of use applicable to the products.

NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE

SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND

INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.

PROGRAMMABLE PRODUCTS

OMRON shall not be responsible for the user's programming of a programmable product, or any consequence thereof.

Disclaimers

CHANGE IN SPECIFICATIONS

Product specifications and accessories may be changed at any time based on improvements and other reasons.

It is our practice to change model numbers when published ratings or features are changed, or when significant construction changes are made.

However, some specifications of the products may be changed without any notice. When in doubt, special model numbers may be assigned to fix or

establish key specifications for your application on your request. Please consult with your OMRON representative at any time to confirm actual

specifications of purchased products.

DIMENSIONS AND WEIGHTS

Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.

PERFORMANCE DATA

Performance data given in this catalog is provided as a guide for the user in determining suitability and does not constitute a warranty. It may represent the

result of OMRON’s test conditions, and the users must correlate it to actual application requirements. Actual performance is subject to the OMRON

Warranty and Limitations of Liability.

ERRORS AND OMISSIONS

The information in this document has been carefully checked and is believed to be accurate; however, no responsibility is assumed for clerical,

typographical, or proofreading errors, or omissions.

2011.12

In the interest of product improvement, specifications are subject to change without notice.

OMRON Corporation

Industrial Automation Company

http://www.ia.omron.com/

K2CM-Q1LA [OMRON]

相关型号：

K2CM-Q1LS

K2CM-Q1LSA

K2CM-Q1M

K2CM-Q1MA

K2CM-Q2H

K2CM-Q2HA

K2CM-Q2L

K2CM-Q2LA

K2CM-Q2LS

K2CM-Q2LSA

K2CM-Q2M

K2CM-Q2MA