Connecting The Io Module To Safety Switching Devices Or Safety Modules; General Structure; Figure 16: Potential Group For Safety Related Applications - WAGO -I/O-SYSTEM 750-508 Manual

36 Using Interference-Free Variations of I/O Modules in Safety Related ApplicationsWAGO-I/O-SYSTEM 750
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8.2 Connecting the IO Module to Safety Switching
Devices or Safety Modules
8.2.1

General Structure

When using the interference-free variation ".../8xx-xxx"of the IO module 750-
508 in safety related applications, the modules belonging to a safety switching
device shall be combined to form a potential group. Power to the potential group
shall be supplied via a power supply module 750-601 or 750-602 or via filter
module 750-626. Either a power supply module or a separation module without
power jumper contacts (750-616) must be connected at the end of the potential
group.
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Safety switch module/
Safety module
Supply module
1
24 V
2
0 V
3
PE

Figure 16: Potential group for safety related applications

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Output modules
in safety related applications
1 5 1 5
D01 D02 D01 D02
4 2 6 2 6
24 V 24 V
5 3 7 3 7
0 V 0 V
6 4 8 4 8
PE PE
Potential group
for safety related applications
750-508 2DO 24V DC 2.0A, diagnostics
Supply
module
1 5 1 5
D01 D02 D01 D02
2 6 2 6 1
24 V 24 V
3 7 3 7 2
0 V 0 V
4 8 4 8 3
D03 D04 D03 D04
Separation
or
module
4
24 V
5
0 V
6
PE
750-616
Further
potential group
Manual
Version 1.2.0