Installation - Siemens SIMATIC Manual

1. Installation

2.
CPU
S7-300 Automation System CPU 31x: Commissioning
A5E00164278-02
Figure
1. Screw the rail in position (screw size: M6).
Make sure that there is a clearance of at least
40 mm above and below the rail.
1.
If you fasten the rail to a grounded metal plate or
device support, make sure there is a low-resistance
connection between the rail and
the base. the base
2. Connect the rail to the protective conductor.
There is an M6 protective conductor screw on the
rail
for this purpose.
Minimum cross-section of the cable to the protective
conductor: 10 mm
Figure
1
2
CPU
3
CPU
Installing and Grounding the Rail
2
.
Attaching the Modules on the Rail
1. Attach the power supply. Push it to
the left until it reaches the rail's
grounding screw, and then screw in
place.
2. Connect to the other modules by
plugging a bus connector into the
CPU (see detail).
3. Attach the CPU (1).
4. Push it up against the module on
the
left (2)
5. and tip it downward (3).
6. Screw the modules hand-tight onto
the rail.
7. If you are using a CPU with an
MMC,
insert the memory card into the
slot.
8. Now fit the digital input module and
digital output module to the right of
the CPU by repeating steps 1 to 6.
7