Siemens S7-300 Operating Instructions Manual page 35

Procedure
Personal injury and damage to equipment on account of unshielded voltage.
If you wire the FM 352 front connector while the system is in live state, you will risk injury
from electric shock!
Always switch off power before you wire the FM 352!
If no EMERGENCY OFF switch is installed, damage may be caused by connected
aggregates.
Install an EMERGENCY OFF switch to be able to shut down the connected drives while
operating the FM 352 via the
To wire the front connector:
1. Strip the wires to length of 6 mm. Crimp on wire end ferrules as required.
2. Open the front panel cover, then position the front connector for wiring.
3. install the cable strain relief in the connector.
4. To exit the cables at the bottom, terminate the wires starting at the bottom, otherwise at
5. Tighten the strain relief for the cable harness.
6. Move the front connector into operating position (press the interlocking element while
7. You can fill out the included label and insert it into the front panel cover.
Non-isolation
The chassis of the encoder supply has a non-isolated connection to the chassis of the CPU;
i.e., you have to connect terminal 2 (1M) to the chassis of the CPU or the IM 153 using a
low-impedance connection.
FM 352 electronic cam controller
Operating Instructions, 05/2011, A5E01071724-03
WARNING
the top. Screw-tighten any unused terminals. Tightening torque = 0.6 N/m to 0.8 N/m.
doing so).
Parameter assignment interface
Wiring the FM 352
5.5 Wiring the front connector
.
35