Siemens CIM Operating Manual page 30

Mounting and connecting the device
4.2 Connecting the device
Note
The external bonding facility should provide effective connection of a conductor with a cross-
sectional area of at least 4 mm
Note
Terminal blocks do not accommodate more than one individual conductor in a clamping
point.
Requirement
• You are using the supplied terminal
• A two-core cable meet the following requirements:
– a copper (Cu) cable with cross-section of 0.75 mm
– rated temperature 75 °C
• A slotted screwdriver with a 3 mm blade
• Function earth with minimum cross-section of 2.5 mm
Screw terminals for the power supply and function earth
1. Switch off the power supply.
2. Connect the lines to the connecting terminal with a torque of 0.8 Nm (7lb-in).
①
②
③
Note
Power supply unit of the CIM is not electrically isolated
No electrical isolation means that the input and output circuits are not galvanically isolated.
30
L+ = live wire, positive pole of the DC voltage 12/24 VDC
M = negative pole/ground of the DC voltage 12/24 VDC
Functional ground
• Serves to improve electromagnetic compatibility and to specify a common reference poten-
tial for all signals.
• Is achieved efficiently by a connection to the DIN rail.
.
2
to 2.5 mm
2 2
copper cable
2
Operating Manual, 11/2022, A5E51250518-AC
CIM