Mains connection and grounding Connection
4 - 6
4.2.2 Control unit CR3D and drive unit DU3
Make sure that the mains voltage and the power switch of the control unit or the drive unit are
switched off.
Release the two screws of the door , rotate the [POWER] switch to the "OFF" position and
open the door.
Remove the terminal cover of the power switch by pressing the lock upwards and then remove
the cover.
Prepare the mains line (feed) and the grounding cable. Use cable with a minimum cross-section
of 2.5 mm².
Release the cable connection on the side and lead the mains line and the grounding cable
through the cable connection.
Connect the mains line to the terminals of the power switch according to Fig. 4-6 .
Connect the grounding cable with the ground connection (M5-screw) to the low-voltage
board.
Fix the terminal cover of the power switch back into place. You will hear a click when it locks in.
Tighten the cable connection.
Close the door of the control unit . You will hear a click when the door locks on. Fix the door
with the screws .
R001461E
Fig. 4-6:
Connection of mains line and grounding on control unit CR3D and on drive unit DU3
Area A
Locking
From left to right: L1, L2, L3
Detailed view
of Area A
Grounding cable
Low voltage
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