Maintenance/repair
Repair
9
51
BA33.0001 EN 2.0
Procedure
1. Inhibit controller.
2. Disconnect power connection; in the case of terminal box design, disconnect power
supply between inverter and motor.
3. Measure the resistance between the following contacts or terminals:
– Connector size 1.0; M23:
pins U
↔
V, V
↔
W, W
↔
U
– Connector size 1.5; M40:
pins 4
↔
5, 5
↔
6and6
↔
4
–Terminalbox:
terminals 1
↔
2,.2
↔
3and3
↔
1andU
↔
V, V
↔
W, W
↔
U
4. The mean value calculated from the three measured values corresponds to twice the
phase resistance (star connection).
– Use the mean value as R
1
and R
0
in the following e quation to calculate the
winding temperature
ϑ
1
:
⋅
ϑ
1
Winding temperature during operation
Â
1
[°C] =
1
⋅
R
0
− 235
R
1
Winding resistance at operating temperature
R
0
Winding resistance at 20°C
9.3 Repair
ƒ
It is recommended to have all repairs performed by Lenze Service.
ƒ
Delivery of spare parts is available upon request.
To Next Page
Loading...
Need help?
General