Replacing The Capacitor Battery; Replacing The Sml And The Smu - Siemens 6SE7087-8KN50 Instructions De Service

Maintenance
9.4

Replacing the capacitor battery

Construction types
E and F
Construction type G
Construction type J
CAUTION
9.5

Replacing the SML and the SMU

9-4
The unit is an assembly which consists of the DC link capacitors, the
capacitor support and the DC link bus module.
♦ Disconnect the electrical connection to the inverter bus module.
♦ Undo the mechanical interlock.
♦ Swing the capacitor battery out towards the front and lift the unit out
towards the top.
♦ Remove the connection for the balancing resistor (cable lug M6).
♦ Detach the mechanical fastening.
♦ Swing the capacitor battery out towards the front and lift the unit at
an angle of 45 ° out of the converter.
The capacitor battery consists of three modules. Each module contains
a capacitor support and a DC link bus module.
♦ Detach the plug-in connections.
♦ Detach the mechanical fastening (three screws: two on the left, one
on the right)
Tilt the capacitor battery sideways until its endstop, slightly raise the
unit and lift it forwards out of the converter.
The capacitor battery weighs up to 30 kg, depending on the converter
output!
SML: Snubber Module Lower
SMU: Snubber Module Upper
♦ Remove the capacitor battery.
♦ Undo the fixing screws (4 x M8, 8 - 10 Nm or 4 x M6, 2.5 - 5 Nm,
1 x M4, max 1.8 Nm).
♦ Remove the modules.
Install the new modules in the reverse sequence.
6SE7087-7KN50
Operating Instructions SIMOVERT MASTERDRIVES
08.2008
Siemens AG