Siemens Sinamics G110M Original Instructions Manual page 53

21. Connecting the 24 V external supply (glanded variant - but not the
AS-i variant)
1. Feed the two 4-core cables through the cable glands.
2. Connect each 4-core cable to the DC 24 V input and the DC 24 V
output.
3. Secure the cable cover to the CPI using the two screws.
4. Tighten the cable glands to secure the cables in place.
Notes:
The terminals for the 24 V external supply both input and output
•
are as follows:
– 1 = +24V unswitched
– 2 = 0V unswitched
– 3 = +24V switched
– 4 = 0V switched
Screws tightening torque: 1.5 Nm.
•
The cable glands have a diameter of 20 mm
•
Wiring dimensions:
•
– 0.25 ... 2.5 mm
– 0.25 ... 1.5 mm
Note
Unswitched and switched power supply
The unswitched 24 V power supply (also known as non-switched) on X1.2 and X1.4 provides
power to the general electronics of the Control Unit. The switched 24 V power supply on
X1.1 and X1.5 supplies power for the two digital outputs (DI0 and DI1). For a complete
explanation of the unswitched and switched 24 V supplies and their limitations, please read
the FAQ at the following link:
Unswitched and switched 24 V supply
(http://support.automation.siemens.com/WW/view/en/26986267)
After the system installation has been completed, the external electrical connections can be
performed. See Electrical Installation (Page 57)
Grounding the terminal housing
To ensure that the Inverter is properly grounded and protected, an earthing cable MUST be
fitted to the terminal housing of the G110M system.
● Connect the PE terminal on the left-hand side of the inverter to appropriate grounding
point of the installation.
● Use a short wire connection.
SINAMICS G110M Operating Instructions
Operating Instructions, 04/2015, FW V4.7.3, A5E31298649B AD
without isolated cable ends (ferrels).
2
with isolated cable ends (ferrels).
2
Installation
4.2 System Installation
53