Siemens SINAMICS S120 Equipment Manual page 236

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Line Modules Booksize

3.4 Basic Line Modules with internal air cooling

A ventilation clearance of 80 mm above and below the components must be observed.

It is only permissible to establish connections to the DC link using the adapters that

SIEMENS has recommended (DC link adapter and DC link rectifier adapter).

The connection to the braking resistors must be made using a shielded cable.

The tightening torque of the DC link busbar screws (1.8 Nm, tolerance +30 %) must be

checked before commissioning. After transportation, the screws must be tightened.

The electronics of the braking module is powered from the DC link. That means, as long as

there is no DC link voltage (< 360 V ± 2 %), the electronics are not active and an external

control or the CU320 receives the signal "fault" from the fault output. So more than the

2 seconds are required that the electronics requires to start up as soon as the DC link

voltage is present.

If braking resistors other than those listed in the operating instructions, order number

6SE7087-6CX87-2DA1, are used, they may be damaged.

Manual, (GH2), 06/2008, 6SL3097-2AC00-0BP6

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