GE Industrial Solutions AF-300 G11 - Manual (Page 103)

7-2
Data subject to change without notice 7/07. © 2007 GE Drives
Overvoltage during
acceleration OU1
(4) Overvoltage
Overvoltage during
deceleration OU2
Overvoltage running at
constant speed OU3
Reduce the supply
voltage to less than the
specified upper limit.
Faulty drive or error
due to noise. Contact
GE Drives.
Is the power supply voltage within the specified value?
Does OU activate when the load is suddenly removed?
Does the main circuit DC link voltage
exceed the protection level?
Does OU alarm activate
when acceleration is
completed?
Can the acceleration
time be prolonged?
Can the deceleration time be prolonged?
Can the amount of load inertia be reduced?
Prolong.
Reduce.
Is the braking device or DC brake function in use?
Inspect the braking method. Contact GE Drives.
Consider using a
braking system or DC
brake function.
Faulty drive control circuit
or error due to noise, etc.
Contact GE Drives.
Is the main circuit DC voltage
(between P-N) higher than the
detection level specified in
Section 6.1.1?
The drive may be faulty.
Contact GE Drives.
Reset and restart
operation.
Does LU activate when
the circuit breaker or
magnetic contactor is
switched on?
Is power transformer
capacity adequate?
Replace the faulty part and
repair the connection.
Has a (momentary)
power failure occurred?
Faulty parts or loose
connection in the power
circuit?
Is there a load requiring
a large starting current
within the same power
distribution group?
Modify power distribution system to
satisfy the specified value.
Low voltage
LU
Is the power supply
voltage within the
specified value?
YES YES YES
YES YES YES
YES YES YES
YES
YES
NO
YES
NO NO NO
NO NO NO
NO
NO NO
YES
NO
NO
YES
(5) Low voltage