Siemens simovert master drive - Replacing the Starting Capacitor; Replacing the Capacitor Bank; Replacing SML and SMU

12.96 Maintenance
Siemens AG 6SE7087-6BM70
5-3
SIMOVERT MASTER DRIVES Operating Instructions
5.2.3 Replacing the starting capacitor
The starting capacitor is mounted next to the fan connection.
The starting capacitor is mounted on the fan assembly.
• Remove the plug connections from the starting capacitor
• Unbolt the starting capacitor
• Install a new starting capacitor in the inverse sequence
5.2.4 Replacing the capacitor bank
The capacitor assembly consists of three boards. Each board has a capacitor mounting element and a DC link
bus connection.
• Remove the plug connections
• Release the mechanical retaining elements (three screws: two at the left, one at the right)
• Remove the capacitor by slightly raising them and withdrawing them from the drive converter towards the
front.
CAUTION
The capacitors weight up to 30 kg depending on the drive converter rating.
• Install a new capacitor bank in the inverse sequence.
5.2.5 Replacing SML and SMU
SML Snubber Module Lower
SMU Snubber Module Upper
• Remove the capacitors
• Release the mounting screws (4 ×
M8 (torque: 8 - 10 Nm), 1
×
M4 (max. 1.8 Nm))
• Remove the SML / SMU
Install the new board in the reverse sequence.