Connecting 
  5.1 Wiring 
SIMOTION C 
Operating Instructions, 02/2012 
103 
Setting power supply to the required supply voltage 
Check whether the supply voltage selection switch is set correctly for your supply voltage. 
The basic setting on the PS 307 is always 230 V. Proceed as follows to change the setting 
for the supply voltage:  
1.  Remove the covering cap using a screwdriver. 
2.  Set the switch to the available supply voltage. 
3.  Refit the covering cap over the switch opening. 
Reverse polarity protection 
If the connection is correct and the power supply is switched on, the "5 VDC" LED is 
illuminated green. 
 
 
Note 
Your module will not work in the case of reverse polarity. However, a built-in reverse polarity 
protection will protect the electronics against damage. 
 
Fuse 
If a fault is present on the module, a built-in fuse protects the electronics against 
consequential damage (e.g. fire). In this case, the module must be replaced. 
5.1.5  Connecting the drive units 
Connecting the connecting cable 
Note the following:  
 
 
Note 
Only use shielded, twisted pair cables; the shield must be connected to the metallic or 
metalized connector housing on the controller side. We recommend that you do not ground 
the shield on the drive side. This is to separate low-frequency interferences from the analog 
setpoint signal. 
The pre-assembled cable available as an accessory provides the best possible immunity to 
interference.