LOK1240-2RD [BEL]
DC-DC Regulated Power Supply Module, 1 Output, 48W, Hybrid;
| 型号： | LOK1240-2RD |
| 厂家： | 
BEL FUSE INC. |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, 48W, Hybrid |
| 文件： | 总8页 (文件大小：334K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Benign Environment
AC-DC Converters 100 Watt
OK Series
50 Watt AC-DC Front End
OK Series
Convert Simply 50
Single output
• Universal AC input
• Class I equipment
• 3000 V AC input to output electric strength test
• High efficiency up to 86%
• Short circuit protection
• Battery charger versions for 12 V and 24 V batteries
• High level of electromagnetic compatibility
Safety according to IEC/EN 60950
LGA
105
4.29
114.5
4.51"
35
1.38"
Summary
The Convert Simply 50 front end modules represent a fam-
ily of 50 watt DIN-rail mountable AC-DC converters for use
as rectifiers or battery chargers. Fully encapsulated plastic
case, compact size and high reliability make the OK series
an excellent choice when a DIN-Rail mountable AC-DC
converter in space critical applications is required. The uni-
versal input range and a built-in input filter allows flexible
operation in a wide variety of electronic equipment and ena-
bles world wide connection to the mains.
The units are available as rectifiers with 12 V or 24 V single
outputs as well as battery chargers for 12 V or 24 V batter-
ies. The output voltage can be adjusted via the R input.
Safety approvals and EMC fully comply with world wide re-
quirements.
Key applications
Typical applications are: powering building controls, factory
automation, industrials controls, instrumentation, electro-
magnetic drives, fans and other DC loads.
Type Survey and Key Data
Table 1: Type survey
Output 1
Rated output
power
Input voltage
range
Efficiency 2
Type designation
Option
TA = 50°C
Uo nom [V DC]
Io nom [A]
Po nom [W]
Ui min…Ui max
h
typ [%]
82
12
24
4
48
48
49
49
85...264 V AC 1
47...63 Hz
LOK 1301-2
LOK 1601-2
LOK 1140-2R
LOK 1240-2R
-
-
2
84
82
84
13.6
27.24
3.6
1.8
D
D
1 Derating to 85% of Po nom below Ui = 105 V AC.
2 Efficiency at Ui rated and Io nom
.
Table of Contents
Page
Page
Summary.......................................................................... 1
Type Survey and Key Data .............................................. 1
Type Key and Product Marking ........................................ 2
Functional Description...................................................... 2
Electrical Input Data ......................................................... 3
Electrical Output Data ...................................................... 3
Auxiliary Functions ........................................................... 4
Electromagnetic Compatibility (EMC) .............................. 5
Immunity to Environmental Conditions............................. 6
Mechanical Data .............................................................. 6
Safety and Installation Instructions .................................. 7
Edition 2/6.99
1/8
MELCHER
The Power Partners.
OK Series
AC-DC Converters 100 Watt
Benign Environment
Type Key and Product Marking
Type Key
LOK 1 1 4 0 -2 R D
Series .......................................................................... LOK
Number of outputs ........................................................... 1
Output
12 V rectifier version .................................... 3
24 V rectifier version .................................... 6
13.6 V battery charger ............................... 14
27.3 V battery charger ............................... 24
rectifier version .......................................... 01
battery charger........................................... 40
other voltages or specs....................... 02...99
Ambient temperature range TA:
–10...50°C .................................................. -2
Auxiliary functions and options:
Rectangular U/I output characteristic ......... R 1
Output voltage OK signal............................ D 2
1 Battery charger versions. Rectifier versions have hiccup mode.
2 Option D only together with feature R
Examples: LOK 1140-2R: AC-DC converter, battery charger version, providing 13.6 V/3.6 A output
LOK 1601-2: AC-DC converter, rectifier version, providing 24 V/2 A, 48 W output
Produkt Marking
Family designation
Type designation, applicable safety approval and recognition marks, CE mark, specific type designation, input voltage
range, nominal output voltage and current and terminal allocation. Caution remarker.
Label with manufacturing lot no., data code and serial no.
Functional Description
The Convert Simply 50 front end modules are fly back con-
verters with a fixe frequency of 100 kHz. The battery
charger modules LOK 1140-2R and LOK 1240-2R have
a rectangular U/I output characteristic. The rectifier mod-
ules LOK 1301-2 and LOK 1601-2 have overload protection
03095
working in a hiccup mode.
2
03094
1
4
6
L
Vo+
Vo+
2
1
L
4
6
Vo+
Vo+
7
9
Vo–
Vo–
3
N
7
9
Vo–
Vo–
NTC
3
N
NTC
8
8
R
R
Fig. 1
Block diagram LOK 1301 and LOK 1601, rectifier version
Fig. 2
Block diagram LOK 1140 and LOK 1240, battery charger
version
Edition 2/6.99
2/8
MELCHER
The Power Partners.
Benign Environment
AC-DC Converters 100 Watt
OK Series
Electrical Input Data
General Condition: TA = 25°C unless otherwise specified
Table 2: Input data
Characteristics
LOK
100...240
85...264
47...63
0.8/0.4
19
Unit
Ui rated Rated input voltages
V AC
Ui
fi
Input voltage range
Line frequency
Hz
A
Ii
Input current at 115/230 V AC 1
2
linr max Inrush current at Ui = 230 V
1 At Io nom
.
2 Inrush current limitation by a 16 Ω NTC
Electrical Output Data
General Conditions:
– TA = 25°C unless otherwise specified.
– Trim input not connected.
Table 3a: Output data for single output units
Output
LOK 1301-2
LOK 1601-2
Characteristics
Conditions
min
typ
12
max
min
23.64
21.6
typ
24
max
Unit
V
Uo
Output voltage
Ui rated, Io nom
11.82
10.8
12.18
13.2
24.36
26.4
Uo adj
Io nom
uo
Adjustable voltage range
Nominal output current
Ui min...Ui max
4000
100
2000
100
mA
Output voltage noise
(BW = 20 MHz)
Ui rated
Io nom
150
150
mVpp
DUo U Static line regulation
Ui min...Ui max, Io nom
Ui rated, Io = (0.5 ↔ 1) Io nom
Io = (1 ↔ 0.5) Io nom
115/230 V
±1
±1
±1
±1
%
DUo I
tr
Static load regulation
Transient recovery time
Hold-up time
500
500
µs
ms
th
14/90
±0.05
100
14/90
±0.05
100
aUo
fs
Temperature coefficient
Switching frequency
Ui rated, Io nom
%/K
kHz
Table 3b: Output data for single output units
Output
LOK 1140-2R
LOK 1240-2R
Characteristics
Conditions
min
typ
max
13.82
15
min
typ
max
27.65
30
Unit
V
Uo
Output voltage
Ui rated, Io nom
13.41
12.26
13.62
26.83
24.5
27.24
Uo adj
Io nom
uo
Adjustable voltage range
Nominal output current
Ui min...Ui max
3600
100
1800
100
mA
Output voltage noise
(BW = 20 MHz)
Ui rated
Io nom
150
150
mVpp
DUo U Static line regulation
Ui min...Ui max, Io nom
Ui rated, Io = (0.5 ↔ 1) Io nom
Io = (1 ↔ 0.5) Io nom
115/230 V
±1
±1
±1
±1
%
DUo I
tr
Static load regulation
Transient recovery time
Hold-up time
500
500
µs
ms
th
14/90
±0.05
100
14/90
±0.05
100
aUo
fs
Temperature coefficient
Switching frequency
Ui rated, Io nom
%/K
kHz
Edition 2/6.99
3/8
MELCHER
The Power Partners.
OK Series
AC-DC Converters 100 Watt
Benign Environment
Thermal Considerations
If an AC-DC converter is located in free, quasi-stationary air
(convection cooling) at the indicated maximum ambient
temperature TA max (see table: Temperature specifications)
and is operated at its nominal input voltage and output
power, the temperature measured at the: Measuring point
of case temperature TC (see: Mechanical Data) will ap-
proach the indicated value TC max after the warm-up phase.
However, the relationship between TA and TC depends
heavily on the conditions of operation and integration into a
system. The thermal conditions are influenced by input volt-
age, output current, airflow, temperature of surrounding
components and surfaces. TA max is therefore, contrary to
TC max, an indicative value only.
The relation between the maximum allowed output power
Po allowed and the temperature TA of the surrounding air is
given in fig.: Maximum allowed output power vs. ambient
temperature. The rates apply if the AC-DC converter is lo-
cated in free, quasi-stationary air (convection cooling).
Note: Sufficient forced cooling allows TA to be higher than
the value given in the table if TC max according to the table is
not exceeded.
Caution: The installer must ensure that under all operat-
ing conditions TC remains within the limits stated in the
table: Temperature specifications.
Po allowed/Po nom
1.0
Po allowed/Po nom
1.0
0.85
0.5
0.45
0.5
0
0
TA
Ui
[V
[°C]
10 20 30 40 50 60 70
–10
0
]
50 75 100 125 150 175 200 225 250 275 300
rms
Fig. 3
Fig. 4
Maximum allowed output power versus input voltage at
TA 50°C. LOK 1301-2, LOK 1601-2.
Maximum allowed output power versus ambient tempera-
ture at Ui >105 V. LOK 1301-2, LOK 1601-2.
Auxiliary Functions
Adjustable Output Voltage (R input)
As a standard feature, the units offer adjustable output volt-
age by using the control input R. If the R pin is left open cir-
cuit the output voltage is set to Uo nom. The output voltage is
b) Adjustment by means of an external voltage Uext be-
tween Vo– and R terminal to achieve an output voltage
adjustment range of approx. 90...110% Uo nom
.
adjustable in the range 90...110% of Uo nom
.
Uo • 2.5 V
Uo nom
U
ext ≈ –––––––––
The R input is referenced to the secondary side of the con-
verter. Adjustment of the output voltage is possible by
means of either an external resistor or a voltage source.
Attempting to adjust the output below this range will
cause the converter to shutdown (hiccup mode).
Note: Applying an external control voltage >2.75 V may
damage the converter.
a) Adjustment by means of an external resistor Rext1
:
Depending upon the value of the required output voltage,
the resistor shall be connected
06029
Vi+
Vo+
R
either: Between the R terminal and Vo– to achieve an
output voltage adjustment range of approximately
Rext2
Uo = 90...100% Uo nom
.
Uref 2.5 V
4 kΩ
Uo
R
ext1 ≈ 4 kΩ • –––––––––
+
Uo nom – Uo
or: Between the R terminal and Vo+ to achieve an output
control
circuit
Uext
Rext1
–
voltage range of approximately Uo = 100...110% Uo nom
.
Vo–
Vi–
(Uo – 2.5 V)
R
ext2 ≈ 4 kΩ • –––––––––––––––––––
2.5 V • (Uo/Uo nom – 1)
Fig. 5
Output voltage control for single output units by means of
the R-input
Edition 2/6.99
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MELCHER
The Power Partners.
Benign Environment
AC-DC Converters 100 Watt
OK Series
Output Overload Protection
Parallel Operation
Battery charger versions LOK 1140-2R and LOK 1240-2R
have a rectangular current limitation which limits the output
current to within (1...1.3) • Io nom. The rectifier types LOK
1301-2 and LOK 1601-2 are protected against overload by
a current limiting device which shuts down the converter in
overload condition. It automatically restarts after removal of
the overload condition (hiccup mode).
Only battery charger versions.
The outputs of several units of the battery charger types
with equal output voltage (e.g. several LOK 1240-2R) can
be put in parallel.
Option D
Output Voltage OK Signal
The D-output is referenced to Vo– and monitors the output
voltage Uo. If Uo drops below Uot, the D-output will be disa-
bled (open-collector circuit). The circuitry works independ-
ently of the input voltage and can therefore be used as bat-
tery-low indicator.
Outputs Connected in Series
Two or more units supplying the same or different output
voltages may be connected in series. The value of the
maximum output current to be taken is defined by that unit
providing the lowest current limiting value. It should be as-
sured that the outputs do not feed backwards into each
other caused by their different rise/fall times at switch-on/off
cycles by adding reverse polarity diodes across each out-
put.
Table 4:
Conditions
LOK 1301-2
LOK 1601-2
LOK 1140-2R
LOK 1240-2R
min
max
10.4
60
min
max
20.8
60
Unit
V
Uot
10.0
20.0
UD Uo ≤ Uot
Uo > Uot
Electromagnetic Compatibility (EMC)
0.6
0.6
Immunity
IoD < 50 mA
A metal oxide VDR together with an internal input fuse and
input filter form an effective protection against high input
transient voltages which typically occur in most installa-
tions. The O family has been successfully tested to the fol-
lowing specifications:
Table 5: Immunity type tests
Phenomenon
Standard 1
Level
Coupling
mode 2
Value
applied
Waveform
Source
imped.
Test
procedure
In
Per-
oper. form. 3
Electrostatic
discharge
IEC/EN
61000-4-2
2
air discharge
8000 Vp
1/50 ns
330 Ω
10 positive and
10 negative
discharges
yes
B
Electromagnetic IEC/EN
2
3
antenna
3 V/m
2 kVp
AM 80%
1 kHz
n.a.
26…1000 MHz
yes
yes
A
B
field
61000-4-3
Electrical fast
transient/burst
IEC/EN
61000-4-4
direct, i/ , +i/–i
bursts of 5/50 ns 50 Ω
2.5/5 kHz over
15 ms; burst
1 min positive
1 min negative
transients per
coupling mode
period: 300 ms
Surge
IEC/EN
3
2
i/
2 kVp
1 kVp
1.2/50 µs
12 Ω
2 Ω
5 pos. and 5 neg.
surges per
yes
61000-4-5
+i/–i
1 Related and previous standards are referenced in: Technical Information: Standards 2 i = input, o = output, c = case.
3 A = Normal operation, no deviation from specifications, B = Normal operation, temporary deviation from specs possible.
[dBµV]
90
Emission
07113
Internal input filtering keeps the conducted noise of the
units within the frequency range of 10 kHz to 30 MHz below
level B according to EN 55011 and EN 55022 standards
(CISPR 11/22 respectively).
80
70
60
50
40
30
20
10
0
EN 55022 A
EN 55022 B
Fig. 6
Typical disturbance voltage (quasi-peak) at the input accord-
ing to CISPR 11/22 and EN 55011/22, measured at Ui nom
and Io nom. e.g. LOK 1601-2, Ui = 230 V AC.
MHz
Edition 2/6.99
5/8
MELCHER
The Power Partners.
OK Series
AC-DC Converters 100 Watt
Benign Environment
Immunity to Environmental Conditions
Table 14: Mechanical stress
Test Method
Standard
Test Conditions
Status
Ca
Ea
Eb
Fc
Damp heat
steady state
IEC/DIN IEC 60068-2-3
MIL-STD-810D section 507.2 Relative humidity:
Duration:
Temperature:
40 ±2 °C
%
21 days
Unit not
operating
93 +2/-3
Shock
(half-sinusoidal)
IEC/EN/DIN EN 60068-2-27
MIL-STD-810D section 516.3 Bump duration:
Number of bumps:
Acceleration amplitude:
15 gn = 147 m/s2
11 ms
18 (3 each direction)
Unit
operating
Bump
(half-sinusoidal)
IEC/EN/DIN EN 60068-2-29
MIL-STD-810D section 516.3 Bump duration:
Number of bumps:
Acceleration amplitude:
10 gn = 98 m/s2
11 ms
6000 (1000 each direction)
Unit
operating
Vibration
(sinusoidal)
IEC/EN/DIN EN 60068-2-6
MIL-STD-810D section 514.3
Acceleration amplitude:
0.15 mm (10...60 Hz)
2 gn = 20 m/s2 (60...150 Hz)
10...150 Hz
Unit
operating
Frequency (1 Oct/min):
Test duration:
3.75 h (1.25 h each axis)
Table 7: Temperature specifications
Characterisitcs
Conditions
min
–10
–10
–40
max
50
Unit
TA
TC
TS
Ambient temperature
Case temperature
Operational 1
°C
80
Storage temperature
Non operational
85
1 See: Thermal Consideration.
Table 8: MTBF Values
MTBF
Type
Ground benign
Ground fixed
Ground mobile
TC = 40°C
TC = 40°C
TC = 70°C
TC = 50°C
According to MIL-HDBK-217F, notice 2
LOK
Mechanical Data
Dimensions in mm. Tolerance ±0.3 mm unless otherwise indicated.
European
Projection
114.5
09110
1
2
3
Measuring point of
case temperature
4
7
5
8
6
9
Fig. 7
LOK, weight 320 g
with cage clamp terminals for wire cross
sections 0.2...2.5 mm2, AWG 24-12,
solid or stranded wires.
Edition 2/6.99
MELCHER
6/8
The Power Partners.
Benign Environment
AC-DC Converters 100 Watt
OK Series
Safety and Installation Instructions
Terminal Allocation
Installation Instructions
The terminal allocation table defines the electrical poten-
tials of the AC-DC converters. For mechanical positions of
the terminals see: Mechanical Data.
The LOK AC-DC converters are components, intended ex-
clusively for inclusion within other equipment by an indus-
trial assembly operation or by professional installers. Instal-
lation must strictly follow the national safety regulations in
compliance with the enclosure, mounting, creepage, clear-
ance, casualty, markings and segregation requirements of
the end-use application. See also: Technical Information:
Installation and Application.
Table 9: Terminal allocation and designation
Terminal
no.
Electrical
determination
LOK
1
Input
L
Connection to the system shall be according to: Terminal
allocation and: Mechanical Data. Check for hazardous volt-
ages before altering any connections.
2
3
4
Protective earth
Input
N
Output (positive)
Vo+
n.c./D 1
Vo+
Vo–
R
Ensure that a unit failure (e.g. by an internal short-circuit)
does not result in a hazardous condition. See also: Safety
of operator accessible output circuit.
5
n.c./D-output
Output (positive)
Output (negative)
R input
6
Important: Do not open the modules, or guarantee will
be invalidated.
7
8
Make sure that there is sufficient air flow available for con-
vection cooling. This should be verified by measuring the
case temperature when the unit is installed and operated in
the end-use application. The maximum specified case tem-
perature TC max shall not be exceeded. See also: Thermal
Considerations.
9
Output (negative)
Vo–
1 Optional
Standards and approvals
LOK AC-DC converters correspond to class I equipment.
All types are UL recognized according to UL 1950, UL rec-
ognized for Canada to CAN/CSA C22.2 No. 950-95 and
LGA approved to IEC/EN 60950 standards.
Protection Degree
IP 20: All units.
Isolation
The units have been evaluated for:
• Building in
The electric strength test is performed as a factory test in
accordance with IEC/EN 60950 and UL 1950 and should
not be repeated in the field. Melcher will not honour any
guarantee/warranty claims resulting from electric strength
field tests.
• Double or reinforced insulation between input and out-
put, based on 250 V AC
• Basic insulation between input to earth and output to
earth
• The use in a pollution degree 2 environment
• Connecting the input to a primary circuit with a maximum
transient rating of 4000 V (overvoltage category IV based
on a 110 V primary circuit, overvoltage category III based
on a 230 V primary circuit).
Important: Testing by appllyingAC voltages will result in
high and dangerous leakage currents flowing through
the Y-capacitors (see fig.: Block diagram)
The AC-DC converters are subject to manufacturing sur-
veillance in accordance with the above mentioned UL,
CSA, EN and with ISO 9001 standards.
Table 10: Isolation
Characteristic
Input to
protective earth
Input to
output
Output to
protective earth
Unit
Electric
strength
test voltage
Required according to
IEC/EN 60950
1.5
2.1
2.8
2.0
3.0 1
4.2 1
5.6 1
4.0 1
1
kVrms
1.4
kV DC
Actual factory test 1 s
AC test voltage equivalent
to actual factory test
kVrms
Insulation resistance at 500 V DC
>300
>300
>300
MΩ
1 In accordance with IEC/EN 60950 only subassemblies are tested in factory with this voltage.
2 Tested at 300 V DC.
For creepage distances and clearances refer to: Technical Information: Safety.
Edition 2/6.99
MELCHER
7/8
The Power Partners.
OK Series
AC-DC Converters 100 Watt
Benign Environment
Leakage Currents in AC-DC operation
Leakage currents flow due to internal leakage capacitance
and RFI suppression Y-capacitors. The current values are
proportional to the mains voltage and nearly proportional to
the mains frequency and are specified at an input voltage of
255 V (50 Hz) where phase, neutral and protective earth
are correctly connected as required for class I equipment.
Under test conditions the leakage current flows through a
measuring instrument (MI) as described in fig. Measuring
instrument for earth leakage current tests, which takes into
account impedance and sensitivity of a person touching
accessible parts. The current value is calculated by dividing
the measured voltage by 500 Ω. If inputs and/or outputs of
O-units are connected in parallel, their individual leakage
currents are added.
1500 Ω
MI
10053
500 Ω
P
Vo+
P
N
N
Vo–
10 kΩ
220 nF
MI for
earth
leakage
current
22 nF
V
MI for
output
leakage
current
Fig. 8
Measuring instrument (MI) for earth leakage current tests
according to IEC/EN 60950.
Fig. 9
Test set-up.
Table 11: Leakage currents
Characteristic
LOK
Unit
Maximum earth
leakage current
Permissible according to IEC/EN 60950
Specified value at 264 V, 50 Hz
3.5
0.5
mA
Maximum output
leakage current
Permissible according to IEC/EN 60950
Specified value at 264 V, 50 Hz
0.25
0.005
Safety of operator accessible output circuit
However, it is the sole responsibility of the installer to as-
sure the compliance with the relevant and applicable safety
regulations. More information is given in Technical Informa-
tion: Safety.
If the output circuit of an AC-DC converter is operator ac-
cessible, it shall be an SELV circuit according to the IEC/EN
60950 related safety standards.
The following table shows a possible installation configura-
tion, compliance with which causes the output circuit of an
O-family AC-DC converter to be an SELV circuit according
to IEC/EN 60950 up to a configured output voltage (sum of
nominal voltages if in series or +/– configuration) of 36 V.
Table 12 : Safety concept leading to an SELV output circuit
Conditions
AC-DC converter
Installation
Result
Nominal Supply
voltage
Grade of insulation between
input and output, provided
by the AC-DC converter
Measures to achieve the resulting
safety statuts of the output circuit
Safety statuts of the AC-DC
converter output circuit
Mains ≤250 V AC Double or reinforced
Earth connection 1 and installation
SELV circuit
according to the applicable standards
1 The earth connection of terminal no. 1 has to be provided by the installer according to the relevant safety standards,
e.g. IEC/EN 60950
10021
Fuse
+
~
Fig. 10
Schematic safety concept.
Use fuses and earth connection as per Installation
Instructions and table Safety concept leading to an SELV
output circuit.
Mains
AC-DC
con-
verter
SELV
Fuse
–
~
Earth connection
Edition 2/6.99
8/8
MELCHER
The Power Partners.
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