21
AT.654254.050 ver.1.0
Troubleshooting manual
Replacement of the BVN unit.
BVN replacement procedure is the same for each VSD.
Preparations:
A VSD must be de-energized and disconnected from a power supply.
Using a multimeter, make sure that there is no dangerous voltage on a
DC-link.
Use the following tools for dismantling the BVN unit:
•
crosshead screwdriver
—
1 pc;
•
flat screwdriver
—
1 pc.
In case if it is necessary to dismantle BVN unit:
1.
Take photo or mark all connectors locations.
2.
Unplug signal connectors (yellow) from a terminal blocks which is shown at
figure 5 and disconnect the blade clamps shown in red circles.
Figure 5
–
Unplug and unscrew connectors of a BVN unit
