H3CR-FN-300 [OMRON]

Analog Circuit,;
H3CR-FN-300
型号: H3CR-FN-300
厂家: OMRON ELECTRONICS LLC    OMRON ELECTRONICS LLC
描述:

Analog Circuit,

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IIH3CR-F  
Solid-state Twin Timers  
DIN 48 x 48-mm Solid-state Twin Timers  
Wide power supply ranges of 100 to 240 VAC and  
48 to 125 VDC respectively.  
Independent ON- and OFF-time settings. Further-  
more, combinations of long ON- or OFF-time and  
short OFF- or ON-time settings are possible.  
Fourteen time ranges from 0.05 s to 30 h or from  
1.2 s to 300 h depending on the model to be used.  
Models with a flicker ON start or flicker OFF start  
are available.  
Easy sequence checks through instantaneous  
outputs for a zero set value at any time range.  
Only 80 mm long when panel-mounted with a  
socket.  
11-pin and 8-pin models are available.  
Ordering Information  
Supply voltage  
0.05 s to 30 h models  
11-pin models 8-pin models  
1.2 s to 300 h models  
Operating  
modes  
11-pin models  
8-pin models  
Flicker OFF start  
100 to 240 VAC  
24 VAC/DC  
12 VDC  
H3CR-F  
H3CR-F8  
H3CR-F-300  
H3CR-F8-300  
48 to 125 VDC  
100 to 240 VAC  
24 VAC/DC  
12 VDC  
Flicker ON start  
H3CR-FN  
H3CR-F8N  
H3CR-FN-300  
H3CR-F8N-300  
48 to 125 VDC  
Note: Specify both the model number and supply voltage when ordering.  
Example: H3CR-F 24 VAC/DC  
Supply voltage  
Model Number Legend:  
H3CR -  
-
1
2
3
4
1. Classification  
F: Twin timers  
3. Twin Timer Mode  
None: Flicker OFF start  
N:  
4. Specified Type  
300: Long time range (1.2 s to 300 h) type  
Flicker ON start  
2. Configuration  
None: 11-pin socket  
8:  
8-pin socket  
1
H3CR-F  
H3CR-F  
Accessories (Order Separately)  
Name/specifications  
Models  
Flush Mounting Adapter  
Y92F-30  
Y92F-73  
Y92F-74  
PFP-50N  
PFP-100N  
PFP-100N2  
PFP-M  
Mounting Track  
50 cm (l) x 7.3 mm (t)  
1 m (l) x 7.3 mm (t)  
1 m (l) x 16 mm (t)  
End Plate  
Spacer  
PFP-S  
Protective Cover  
Y92A-48B  
P2CF-08  
P2CF-11  
P3G-08  
Track Mounting/  
Front Connecting Socket  
8-pin  
11-pin  
Back Connecting Socket  
Hold-down Clip  
8-pin  
11-pin  
P3GA-11  
Y92H-7  
For PL08 and PL11 Sockets  
For PF085A Socket  
Y92H-8  
Specifications  
General  
Item  
Operating mode  
Pin type  
H3CR-F  
H3CR-F8  
H3CR-FN  
H3CR-F8N  
Flicker OFF start  
11-pin  
Flicker ON start  
11-pin  
8-pin  
8-pin  
Operating/Reset method  
Output type  
Time-limit operation/Time-limit reset or self-reset  
Relay output (DPDT)  
Mounting method  
EMC  
DIN track mounting, surface mounting, and flush mounting  
Emission Enclosure:  
Emission AC Mains:  
Immunity ESD:  
EN55011 Group 1 class A  
EN55011 Group 1 class A  
IEC801-2: 4 kV contact discharge (level 2)  
8 kV air discharge (level 3)  
Immunity RF-interference:  
ENV50140: 10 V/m (80 MHz to 1 GHz) (level 3)  
Immunity Conducted Disturbance: ENV50141: 10 V (0.15 to 80 MHz) (level 3)  
Immunity Burst:  
IEC801-4: 2 kV power-line (level 3)  
2 kV I/O signal-line (level 4)  
Approved standards  
UL508, CSA C22.2 No.14, LR/NK  
Conforms to VDE0435/2021, VDE0110  
Conforms to EN50081-2, prEN50082-2  
Time Ranges  
0.05 s to 30 h Models  
Time unit  
s (sec)  
0.05 to 1.2  
x10 s (10 s)  
min  
h (hrs)  
Setting  
1.2  
3
1.2 to 12  
3 to 30  
0.12 to 1.2  
0.3 to 3  
0.3 to 3  
1.2 to 12  
3 to 30  
12  
30  
12 to 120  
30 to 300  
1.2 to 12  
3 to 30  
Note: Instantaneous output is available at any time range. To obtain instantaneous output, set to below 0.  
1.2 s to 300 h Models  
Time unit  
Setting  
x10 s (10 s)  
1.2 to 12  
x10 min (10 min)  
1.2 to 12  
h (hrs)  
0.12 to 1.2  
x10 h (10 h)  
1.2  
3
1.2 to 12  
3 to 30  
3 to 30  
0.3 to 3  
1.2 to 12  
3 to 30  
3 to 30  
12  
30  
12 to 120  
30 to 300  
12 to 120  
30 to 300  
12 to 120  
30 to 300  
Note: Instantaneous output is available at any time range. To obtain instantaneous output, set to below 0.  
2
H3CR-F  
H3CR-F  
Ratings  
Rated supply voltage (see note)  
Operating voltage range  
Power reset  
100 to 240 VAC (50/60 Hz),12 VDC, 24 VAC/DC (50/60 Hz), 48 to 125 VDC  
85% to 110% of rated supply voltage; 90% to 110% with 12-VDC models  
Minimum power-opening time: 0.1 s  
Power consumption  
100 to 240 VAC: approx. 10 VA; 12 VDC: approx. 1 W;  
24 VAC/DC: approx. 2 VA (AC), approx. 1 W (DC); 48 to 125 VDC: approx. 1.5 W  
Control outputs  
Contact output: 5 A at 250 VAC, resistive load (cosφ = 1)  
Note: A power supply with a ripple of 20% max. (single-phase power supply with full-wave rectification) can be used with each DC Model.  
Characteristics  
Accuracy of operating time  
±0.3% FS max. (±0.3% FS ±10 ms in ranges of 1.2 and 3 s)  
±5% FS ±0.05 s max.  
Setting error  
Reset time  
0.1 s max.  
Influence of voltage  
Influence of temperature  
Insulation resistance  
Dielectric strength  
±0.5% FS max. (±0.5% FS ±10 ms in ranges of 1.2 and 3 s)  
±2% FS max. (±2% FS ±10 ms in ranges of 1.2 and 3s)  
100 Mmin. (at 500 VDC)  
2,000 VAC, 50/60 Hz for 1 min (between current-carrying metal parts and exposed  
non-current-carrying metal parts)  
2,000 VAC, 50/60 Hz for 1 min (between control output terminals and operating circuit)  
1,000 VAC, 50/60 Hz for 1 min (between contacts not located next to each other)  
Impulse withstand voltage  
Noise immunity  
3 kV (between power terminals) for 100 to 240 VAC, 48 to 125 VDC  
1 kV for 12 VDC, 24 VAC/DC  
4.5 kV (between current-carrying terminal and exposed non-current-carrying metal parts)  
for 100 to 240 VAC, 48 to 125 VDC  
1.5 kV for 12 VDC, 24 VAC/DC  
±1.5 kV (between power terminals), square-wave noise by noise simulator (pulse width:  
100 ns/1 µs, 1-ns rise)  
±400 V for 12 VDC  
Static immunity  
Malfunction:8 kV  
Destruction: 15 kV  
Vibration resistance  
Shock resistance  
Ambient temperature  
Destruction:10 to 55 Hz with 0.75-mm single amplitude each in three directions  
Malfunction:10 to 55 Hz with 0.5-mm single amplitude each in three directions  
2
Destruction: 980 m/s (100G) each in three directions  
2
Malfunction:98 m/s (10G) each in three directions  
Operating:–10°C to 55°C (with no icing)  
Storage: –25°C to 65°C (with no icing)  
Ambient humidity  
Life expectancy  
Operating: 35% to 85%  
Mechanical:20 million operations min. (under no load at 1,800 operations/h)  
Electrical: 100,000 operations min. (5 A at 250 VAC, resistive load at 1,800 operations/h)  
Case color  
Light Gray (Munsell 5Y7/1)  
IEC: IP40  
Enclosure ratings  
Weight  
Approx. 100 g  
Engineering Data  
10,000  
5,000  
1,000  
Reference: A maximum current of 0.15 A can be switched at 125 VDC (cosφ = 1)  
30 VDC L/R = 7 ms  
500  
and a maximum current of 0.1 A can be switched if L/R is 7 ms. In  
250 VAC/30 VDC  
(cosφ = 1)  
both cases, a life of 100,000 operations can be expected.  
The minimum applicable load is 10 mA at 5 VDC (failure level: P).  
100  
250 VAC (cosφ = 0.4)  
Load current (A)  
3
H3CR-F  
H3CR-F  
Nomenclature  
OFF indicator (green)  
LitwhentheoutputisOFF.  
OFF-time unit display window  
OFF-time unit selector (select one from sec.  
10 s, min., and hrs, or from 10 s, 10 min, hrs,  
and 10 h)  
ON indicator (orange)  
Lit when the output is ON.  
Scale range display  
windows  
ON-time setting knob (with orange pointer)  
For ON-time setting  
OFF-time setting knob (with green pointer)  
For OFF-time setting  
Time range selector (select one  
from 1.2, 3, 12, and 30)  
ON-time unit display window  
For both ON-time and OFF-time.  
ON-time unit selector (select one  
from sec. 10 s, min., and hrs, or from  
10 s, 10 min, hrs, and 10 h)  
Operation  
Block Diagrams  
Zero setting  
detection  
circuit  
ON indicator OFF indicator  
Indicator  
circuit  
ROM  
RAM  
Clock  
Output  
circuit  
Power supply  
circuit  
Time range/unit  
selectors  
One-chip microcomputer  
AC (DC) input  
I/O Functions  
Inputs  
---  
Outputs are turned ON/OFF according to the time set by the ON- and OFF-time setting knob.  
Outputs  
Control output  
4
H3CR-F  
H3CR-F  
Timing Chart  
Operating mode  
Timing chart  
Flicker OFF start  
0.1 s min.  
ON  
Power  
OFF  
t
t
t
t
t
t
OFF  
OFF  
ON  
OFF  
ON  
OFF  
ON  
indicator  
Lit  
Not lit  
Lit  
OFF  
indicator  
Not lit  
ON  
Output  
NO  
OFF  
ON  
Output  
NC  
OFF  
t
t
:
ON set time  
: OFF set time  
ON  
OFF  
Flicker ON start  
0.1 s min.  
ON  
Power  
OFF  
t
t
t
t
t
t
OFF  
ON  
OFF  
ON  
OFF  
ON  
Lit  
ON  
indicator  
Not lit  
Lit  
OFF  
indicator  
Not lit  
ON  
Output  
NO  
OFF  
ON  
Output  
NC  
OFF  
t
t
:
ON set time  
: OFF set time  
ON  
OFF  
5
H3CR-F  
H3CR-F  
Dimensions  
Note: All units are in millimeters unless otherwise indicated.  
17.4  
5.7  
66.6  
52.3  
H3CR-F  
H3CR-FN  
48  
6
0.7  
H3CR-F-300  
H3CR-FN-300  
44.8 x 44.8  
37 dia  
48  
14 dia.  
R1.3  
17.4  
5.7  
66.6  
52.3  
H3CR-F8  
H3CR-F8N  
48  
6
0.7  
H3CR-F8-300  
H3CR-F8N-300  
44.8 x 44.8  
37 dia  
48  
14 dia.  
R1.3  
Installation  
Terminal Arrangement  
H3CR-F8  
H3CR-F8N  
H3CR-F  
H3CR-FN  
H3CR-F8-300  
H3CR-F8N-300  
H3CR-F-300  
H3CR-FN-300  
(–)  
(~)  
(+)  
(~)  
(–)(~)  
(+)(~)  
Power supply  
Power supply  
Note: Leave terminals 5, 6, and 7 open.  
Do not use them as relay terminals.  
Operation  
Note: The undermentioned is common for all H3CR-F/G/H models.  
6
H3CR-F  
H3CR-F  
For OFF-time, the desired time unit (sec, 10 s, min, and hrs, or 10 s,  
10 min, hrs, and 10 h) is indicated in the OFF-time unit display win-  
dow at the upper right corner of the front panel and can be changed  
by turning the OFF-time unit selector located below the OFF-time  
unit display window.  
Basic Setting  
Setting of Selectors  
The selectors can be turned clockwise and counterclockwise to se-  
lect the desired time unit, time range, or operating mode.  
Each selector has a snap mechanism that secures the selector at a  
given position. Set the selector at a position at which it is secured.  
Do not set it midway between two securing positions or a malfunc-  
tion could result from improper setting.  
Operating mode  
selector  
Operating mode  
display window  
Groove for  
screwdriver  
H3CR-G Star-delta Timers  
(i.e., H3CR-A)  
A star operation time range (0 to 6, 0 to 12, 0 to 60, or 0 to 120 sec-  
onds) is selected with the star operation time range selector at the  
lower left corner of the front panel.  
Selection of Time Unit and Time Range  
H3CR-F Twin Timers  
A time range (0 to 1.2, 0 to 3, 0 to 12, or 0 to 30) is selected for ON-  
and OFF-time using the time range selector at the lower left corner  
of the front panel, and the selected time range appears within the  
plastic frame of the time setting knob (= scale range display win-  
dows).  
The time required for switching (0.05, 0.1, 0.25, or 0.5 second) from  
the star operation to the delta operation of the H3CR-G can be se-  
lectedwith the star-delta transfer time selector at the lower right cor-  
ner of the front panel.  
For ON-time, the desired time unit (sec, 10 s, min, and hrs, or 10 s,  
10 min, hrs, and 10 h) is indicated in the ON-time unit display win-  
dow at the lower right corner of the front panel and can be changed  
by turning the ON-time unit selector located below the ON-time unit  
display window.  
7
H3CR-F  
H3CR-F  
H3CR-H Power OFF-delay Timers  
Atimerange(0to0.6, 0to1.2, 0to6, and0to12)isselectedwiththe  
timerangeselectoratthelowerleftcornerofthefrontpanel. Notime  
unit selector is available. When ordering the H3CR-H, specify S (for  
the second unit) or M (for the minute unit) for your H3CR-H.  
Dimensions  
Note: The undermentioned is common for all H3CR-F/G/H models.  
Note: All units are in millimeters unless otherwise indicated.  
Dimensions with Flush Mounting Adaptor  
Y92F-30  
Panel  
58  
52  
42  
48  
Panel Cutout  
+0.6  
–0  
0.5 R max.  
45  
Note: The adapters for two or more timers mounted in a vertical line are different in ori-  
(N)  
entation from those mounted in a horizontal line.  
N can be obtained as follows (n: the number of H3CR models arranged side by side)  
+0.6  
–0  
+1  
45  
Without a Cover: N = (48n - 2.5)  
With the Protective Cover: N = (51n - 5.5)  
/
-0  
+1  
/
-0  
+1  
With the Panel Cover: N = (50n - 4.5)  
/
-0  
8
H3CR-F  
H3CR-F  
Dimensions with Flush Mounting Adaptor  
Y92F-73/-70  
Panel Cutout  
Panel  
Adapter mounting hole Two, 4.5 dia.  
R0.5 max.  
65 to 66  
52 to 53  
45±0  
.15  
88  
76±0.2  
45±0.15  
58  
Note: Themounting panel thickness  
Dimensions with Flush Mounting Adaptor  
Y92F-74/-71  
should be 1 to 3.2 mm.  
Panel  
R0.5 max.  
+0.5  
–0  
56  
45  
+0.5  
–0  
68  
58  
55  
45±0.2  
43±0.2  
Note: Themounting panel thickness  
+0.2  
50  
should be 1 to 3.2 mm.  
–0  
Track Mounting  
11-pin,  
short body  
models:  
11-pin, long  
body  
models:  
eg.  
8-pin, long  
body  
models:  
9
111.7*  
109.4  
100.7*  
98.4  
2.3*  
102.8  
100.5  
eg. H3CR-F  
eg.  
H3CR-HRL  
H3CR-H8L  
P2CF-08  
P2CF-11  
P2CF-08  
P2CF-11  
2.3*  
2.3*  
2.3*  
*These dimensions vary with the kind of DIN track (reference value).  
Flush Mounting  
17  
17  
15  
15  
80  
75  
91.4  
85.4  
8-pin, long  
body  
models:  
eg.  
11-pin, long  
body  
models:  
eg.  
11-pin,  
short body  
models:  
eg. H3CR-F  
H3CR-H8L  
H3CR-HRL  
P3GA-11  
P3G-08  
P3GA-11  
P3G-08  
Y92F-30  
Y92F-30  
Y92F-30  
Y92F-30  
9
H3CR-F  
H3CR-F  
Accessories (Order Separately)  
Track Mounting/  
Front Connecting Socket  
P2CF-08  
Terminal Arrangement/  
Internal Connections  
(Top View)  
Eight,  
3
4.5  
M3.5 x 7.5 sems  
7.8  
Surface Mounting Holes  
Two, 4.5 dia. or two, M4  
70 max.  
35.4  
Two, 4.5 dia.  
holes  
40±0.2  
4
50 max.  
20.3 max.  
P2CF-11  
3
4.5  
Eleven,  
M3.5 x 7.5 sems  
Two, 4.5 dia. mounting holes  
7.8  
40±0.2  
70 max.  
35.4  
Two, 4.5 dia.  
holes  
4
50 max.  
31.2 max.  
Back Connecting Socket  
P3G-08  
Terminal Arrangement/  
Internal Connections  
(Bottom View)  
27 dia.  
45  
45  
4.9  
17  
P3GA-11  
27 dia.  
45  
25.6  
6.2  
4.5  
45  
16.3  
Mounting Track  
PFP-100N, PFP-50N  
PFP-100N2  
16  
7.3±0.15  
4.5  
4.5  
27  
29.2  
1.5  
24  
1
27±0.15  
35±0.3  
35±0.3  
15 25  
25  
25  
25 15  
*
15 25  
25  
25  
25  
1
10  
10  
10  
10  
L
L
L: Length  
1 m  
50 cm  
1 m  
PFP-100N  
PFP-50N  
PFP-100N2  
10  
H3CR-F  
H3CR-F  
End Plate  
PFP-M  
Spacer  
PFP-S  
16  
12  
10  
6.2  
5
1.8  
1
35.5 35.3  
34.8  
50  
44.3  
1.8  
11.5  
1.3  
4.8  
M4 x 8  
pan head  
screw  
10  
16.5  
Y92A-48B  
Protective Cover  
Y92A-48B  
The protective cover protects the front panel, particularly the time  
setting section, against dust, dirt, and water. It also prevents the set  
value from being altered due to accidental contact with the time set-  
ting knob.  
Note: 1. The Y92A-48B Protective Cover is made of a hard plas-  
tic and therefore it must be removed to change the timer  
set value.  
2. The Protective Cover cannot be mounted if the Panel  
Cover (sold separately) is used on the Timer.  
Hold-down Clip  
Y92H-7/-1  
For PL08 and PL11 Sockets  
Y92H-8/-2  
For PF085A Socket  
Precautions  
Note: The undermentioned is common for all H3CR-F/G/H models.  
Changing of Setting  
NOTICE: Do not change the time unit, time range, or operation  
mode while the timer is in operation or malfunction could  
result.  
Wiring (H3CR-H)  
The H3CR has a high impedance circuit. Therefore, the H3CR may  
not be reset if the H3CR is influenced by inductive voltage. In order  
to eliminate any influence of inductive voltage, the wires connected  
to the H3CR must be as short as possible and should not be  
installed alongside power lines. If the H3CR is influenced by induc-  
tive voltage that is 30% or more of the rated voltage, connect a CR  
filter with a capacitance of approximately 0.1 µF and a resistance of  
approximately 120 or a bleeder resistor between the power sup-  
ply terminals. If there is any residual voltage due to current leakage,  
connect a bleeder resistor between the power supply terminals.  
11  
H3CR-F  
H3CR-F  
Operation (H3CR-H)  
Power Supplies (H3CR-H)  
An interval of 3 s minimum is required to turn on the H3CR after the  
H3CR is turned off. If the H3CR is turned on and off repeatedly with  
an interval of shorter than 3 s, the internal parts of the H3CR may  
deteriorate and the H3CR may malfunction.  
An AC power supply can be connected to the power input terminals  
withoutregardingpolarity. ADCpowersupplymustbeconnectedto  
the power input terminals as designated according to the polarity of  
the terminals.  
A DC power supply can be connected if its ripple factor is 20% or  
less and the mean voltage is within the rated operating voltage  
range of the Timer.  
3 s min.  
Power  
Connect the power supply voltage through a relay or switch in such  
a way that the voltage reaches a fixed value at once or the Timer  
may not be reset or a timer error could result.  
Output  
state 1  
For the power supply of an input device, use an isolating transform-  
er, of which the primary and secondary windings are mutually iso-  
lated and the secondary winding is not grounded.  
Output  
state 2  
H3CR  
After the forced reset function of the H3CR is activated, an interval  
of 3 s minimum is required to activate the forced reset function  
again. If the forced reset function is activated repeatedly with an in-  
tervalofshorterthan3s, theinternalpartsoftheH3CRmaydeterio-  
rate and the H3CR may malfunction.  
Input  
terminal  
Power supply  
Power  
Circuit  
3 s min.  
3 s min.  
Isolation transformer is required.  
Reset  
input  
The H3CR-H has a large inrush current; provide sufficient power  
supply capacity. If the power supply capacity is too small, there may  
be delays in turning ON the output.  
Output  
If it is required that the output be turned on repeatedly with an inter-  
val of shorter than 3 s, consider use of the H3CR-A in mode D (sig-  
nal OFF-delay).  
Inrush Current  
Model  
Voltage  
24 VAC/DC  
Applied voltage  
26.4 VAC  
Inrush current  
(peak value)  
Time  
10 ms  
H3CR-F  
0.7 A  
26.4 VDC  
13.2 VDC  
137.5 VDC  
132 VAC  
264 VAC  
26.4 VAC  
26.4 VDC  
52.8 VDC  
137.5 VDC  
132 VAC  
264 VAC  
26.4 VAC  
26.4 VDC  
52.8 VDC  
137.5 VDC  
1.1 A  
9.4 ms  
3.3 ms  
9.1 ms  
111 ms  
119 ms  
133 ms  
137 ms  
112 ms  
109 ms  
364 ms  
323 ms  
478 ms  
560 ms  
384 ms  
380 ms  
12 VDC  
52 mA  
0.40 A  
1.05 A  
1.07 A  
1.26 A  
0.85 A  
0.73 A  
0.62 A  
1.02 A  
1.03 A  
1.21 A  
0.87 A  
0.71 A  
0.62 A  
48 to 125 VDC  
100/110/120 VAC  
200/220/240 VAC  
24 VAC/DC  
H3CR-H  
S-series  
48 VDC  
100 to 125 VDC  
100/110/120 VAC  
200/220/240 VAC  
24 VAC/DC  
M-series  
48 VDC  
100 to 125 VDC  
Note: 1. The above figures are all approximations and should be used for reference only.  
2. The inrush current is given mainly for DC models for the required power supply design specifications. For the H3CR-H, the inrush  
current is also given for 100/110/120-VAC and 200/220/240-VAC models because these models have higher inrush currents than  
other series.  
12  
H3CR-F  
H3CR-F  
Input/Output (H3CR-H)  
AnappropriateinputisappliedtotheinputsignalterminaloftheTim-  
er when the input terminal for the input signal is short-circuited. Do  
not attempt to connect any input terminal to any terminal other than  
the input terminal or to apply voltage across other than the specified  
inputterminals or the internal circuits of the Timermaybedamaged.  
Input contact  
Power supply  
AC or DC  
H3CR  
Input  
terminal  
*
L
*Do not connect a relay or any other load between these two  
points, otherwise the internal circuit of the Timer may be  
damaged due to the high-tension voltage applied to the input  
terminals.  
When connecting a relay or a transistor as an external signal input  
device, pay attention to the following points to prevent short-circuit-  
ing due to a sneak current to the transformerless power supply.  
If a relay or transistor is connected to two or more Timers, the input  
terminalsofthoseTimersmustbewiredproperlysothattheywillnot  
be different in phase or the terminals will be short-circuited to one  
another (refer to the figures below).  
H3CR series timer  
Contact or transistor for  
external input signal  
Input  
Power supply  
terminal  
Incorrect  
Short-circuit  
current  
Input  
terminal  
Input  
terminal  
Power supply  
Correct  
Input  
terminal  
Environment  
WhenusingtheTimerinanareawithexcesselectronicnoise, sepa-  
rate the Timer, wiring, and the equipment which generates the input  
signals as far as possible from the noise sources. It is also recom-  
mended to shield the input signal wiring to prevent electronic inter-  
ference.  
Organic solvents (such as paint thinner), as well as very acidic or  
basic solutions can damage the outer casing of the Timer.  
Others  
If the Timer is mounted on a control board, dismount the timer from  
the control board or short-circuit the circuitry of the power board be-  
fore carrying out a voltage withstand test between the electric cir-  
cuitry and non current-carrying metal part of the Timer, in order to  
prevent the internal circuitry of the Timer from damage.  
13  

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