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S5-115F Manual
3.3
Wiring
The backplane on the mounting rack establishes the electrical connection between all modules.
Make the following additional wiring connections:
•
The PS 951 power supply module to the power line
•
The sensors and actuators to the digital or analog modules.
Connect the sensors and actuators to a front connector that plugs into the contact pins on the
front of each module. You can connect the signal lines to the front connector before or after
you plug it into the module. The connection diagram of each module is on the inside of the
front door.
Perforated label strips are included with each input and output module. Use these strips to
note the addresses of the individual channels on the module.
Slip the strips along with their protective transparent covers into the guides on the front door.
•
A number of check modules are required to ensure the safety of the I/O modules:
- Check digital output modules for digital input modules
- Readback digital input modules for digital output modules
- Check relay output modules and check analog output modules for analog input modules.
Subsections 3.3.1 through 3.3.6 explain how to connect individual modules.
3.3.1
Connecting the PS 951 Power Supply Module
Connect the power cable of the 24 DC supply to terminals L+, M and
PS 951.
EWA 4NEB 811 6148-02
L+
M
24 V DC
Figure 3-25. PS 951 Power Supply Module
Installation Guidelines
in order to connect the
3-27
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