Maintenance
12.96
5-6
Siemens AG 6SE7087-6BM70
SIMOVERT MASTER DRIVES Operating Instructions
5.2.7.2
Replacing the VDU and VDU resistor
VDU Voltage-Dividing Unit
VDU and VDU resistor are only available for drive converters with higher supply voltages. The VDU mounting
bracket is part of the electronic module assembly.
♦
VDU
•
Remove the plug connectors
•
Release the mounting bolt
•
Remove the VDU
Install the new VDU in the inverse sequence.
♦
VDU resistor
•
Release the cable ties
•
Remove the plug connections
•
Unbolt the VDU resistor
Install the new VDU resistor in the inverse sequence
5.2.7.3
Replacing the PSU
PSU Power-Supply Unit (Power Supply)
♦
Remove the VDU and VDU resistor (if available)
♦
Remove the VDU mounting panel
♦
Release the plug connections on the PSU
♦
Release the bolts ( six Torx M4) on the PSU
♦
Remove the PSU
Install the new PSU in the inverse sequence
5.2.7.4
Replacing the IGD
IGD
IGBT-Gate Drive
The IGD is located behind the module busbars and consists of
one board for type of construction J
three boards for type of construction K
•
Remove the capacitors
•
Remove SML and SMU
•
Remove the module busing
♦
Type of construction J
•
Remove nine fiber-optic cables at the top of the
IGD
•
Release the mounting bolts and remove the
IGD.
♦
Type of construction K
•
Remove the fiber-optic cables at the left of the
IGD (three per IGD)
•
Remove the P15 cable
•
Release the mounting bolts
•
Withdraw the IGD from the retaining bolts
towards the right and remove
•
Insert a new IGD, and insert towards the left in
the groove of the mounting bolts under the
incoming busbars.
Install a new IGD in the reverse sequence.