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6
Electrical connection
DANGER
Risk of death by electric shock!
Depending on external wiring, dangerous voltages may be present at the switching outputs.
During all work at the electrical system or electronics, make certain that each voltage supply has been
interrupted and protected against being restarted.
The following must be observed for the current supply of the safety relay:
• Supply voltage 24 V DC ±20 %.
• Safe mains separation acc. to EN/IEC 60742 possible.
• A corresponding power supply unit handles interruptions of the supply voltage up to 10 ms in dura-
tion acc. to EN/IEC 61496-1.
WARNING
Improper electrical connection may result in serious injury!
Only allow competent persons to perform the electrical connection.
Make certain that supply and signal lines are laid separately from power lines.
Use appropriate spark extinction for contactors in the cabinet.
Observe the installation notices and operating instructions of the products that are to be connected via
the safety relay (drive motors, brakes, etc.).
The following conditions apply for the electrical connection:
• The safety relay is to be integrated in the control acc. to ISO 13849-1.
• No safety-relevant signals are switched via the message outputs.
• There are always two switching contacts integrated in the system switch-off circuit.
• Relay switching contacts are fused/protected externally according to their specifications (see
table 12.1).
6.1
Circuit plan
-X5
-X5
-X5
-X5
-X2
-X2
-X2
-X2
PE
2
8
1
4
-X1
-F1
PE
0V
0V
3A
1
2
3
4
CB-M12-2000E-8GF
BN
-X3
2
Figure 6.1:
Circuit plan – ML2R-SR4
Leuze electronic
-X5
-X5
-X5
-X2
-X2
-X2
5
7
6
-X1
24V
24V
5
6
7
8
9
BU
G
N
WH
YE
R
D
-X3
7
-X3
3
-X3
1
-X3
4
-X3
8
CompactPlus
Hirschmann CB-LDH-xxxxx-12GF
Hirschmann CB-LDH-xxxxx-12GF
11
-A3
A1
S22
S12
S31
10
Leuze
electronic
MSI-SR4B-02
A2
GY
PK
-X3
5
6
MLD530 - Betriebsart 5
ML2R-SR4
Electrical connection
-X5
-X5
-X2
-X2
3
4
or 1,5mm²
S33
S34
S35
13
23
33
14
24
34
-X5
-X2
9
10
41
42
11
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