Siemens SINAMICS GL150, Operating Instructions Manual

Page: 98 / 168

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. The cable entries for the power cables are covered with aluminum plates. Remove the
covers.
2. Route the power cables through the openings in the power unit.
3. 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. Screw on the power cables. The connection busbars are labeled with the phase designation.
6. 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.
7. Seal the remaining openings where the cables enter the cabinet in accordance with the
degree of protection.
6.12.2 Connecting the signal cables
There are terminal strips and interfaces on the Power Stack Adapter in the electronics
compartment of the power unit. The signal traffic to the open-loop and closed-loop control
cabinet is handled via these interchange points.
The terminal blocks are used to wire up the following:
● Signals
● Auxiliary voltage for fans and anti-condensation heating systems
● Power supply for the electronics
Electrical connection
6.12 Connecting the power unit
SINAMICS GL150 6SL38555UN113KA0Z
98
Operating Instructions Rev.201910281450 EXAMPLE