Detailed information about cabling of the converter is provided in the circuit diagrams supplied.
● Please ensure that the maximum cable lengths between the converter and motor are not
exceeded.
● Make sure that the permissible cable capacitance is not exceeded.
● Use appropriate screws for the cable lugs provided.
● The tightening torque for the M12 screws is 50 Nm.
● Clean the contact surfaces before screwing the connections.
● Apply a thin layer of grease to the screws.
Table 6-1
Cleaning agents and grease
Materials required
Cleaning agent
Ethyl alcohol
Grease
2G from Elektrolube
Procedure
1. Cut out the floor panel for the power cables. When doing this observe the information in the
dimension drawing.
NOTICE
Damage caused by electrical flashovers and arcing
Chips are created when cutting out the floor panel. Chips in the converter shorten
clearances and creepage distances and can lead to flashovers.
● Cut out the floor panel outside the area of the converter.
● Take care that no metal chips are left in the converter.
● Protect cut edges to prevent damage to the cable insulation.
2. Make the connection between the supply and the converter and between the converter and
the motor with the required number of parallel power cables.
3. Insert the power cables into the power unit from below, upwards through the hole in the
baseplate.
Anchor bars are provided for strain relief. On the system side, only use clamps that are
suitable for the short circuits that could potentially occur.
4. Fix cable sealing ends to the power cables.
5. Connect the shields of shielded cables to ground on the transformer or the motor. Do not
connect the power cable shields at the converter side.
Electrical connection
6.12 Connecting the power unit
SINAMICS GL150 6SL38503UM114PA0Z
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Operating Instructions Rev.201910301420 MUSTER
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