5 checking the drive system, 1 checking the motor, Checking the drive system – Lenze EDS4900U-REG User Manual
Page 252: Checking the motor, Troubleshooting and fault elimination, 1 checking the motor warning
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Troubleshooting and fault elimination
8-7
48XX/49XXSHB0399
8.5
Checking the drive system
Note!
The measurements should be made with a digital voltmeter. The stated measuring
values are rated values. In the event of deviations, a defect has occured.
8.5.1
Checking the motor
Warning!
( The measurements described must only be carried out by specialists.
( Disconnect the motor from the mains.
( Tests should only be carried out when no voltage is applied!
Measurement
Measuring point
Measured value
Armature resistance
A
B at the controller
R
A
< 10
W
Insulation resistance of the armature
A
earth potential
B
earth potential
R
Field resistance
I
K
R
F
< 1k
W
Insulation resistance of the field
I
earth potential
K
earth potential
R
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