7-3 Trips and Fault Finding
650V AC Drive
18
CURRENT LIMIT
Software overcurrent trip:
• If the current exceeds 180% of stack rated current for a
period of 1 second, the drive will trip. This is caused by
shock loads. Remove the shock load.
• ACCEL TIME and/or FIXED BOOSTset too high
• DECEL TIME set too low
20
24V FAILURE
24V failure on terminal 6:
• Output overload (warning only). 150mA maximum
either individually or as the sum of terminals 6 & 10
21
LOW SPEED OVER I
The motor is drawing too much current (>100%) at zero
output frequency:
• FIXED BOOST level set too high
22
10V FAULT
10V fault:
• +10V REF overload warning (terminal 4) -
10mA maximum
24
DESAT (OVER I)
Desaturation:
• Instantaneous overcurrent. Refer to OVERCURRENT in
this table.
25
DC LINK RIPPLE
The dc link ripple voltage is too high:
• Check for a missing input phase
26
BRAKE SHORT CCT
Brake resistor overcurrent:
• Check brake resistor value is greater than minimum
allowed
27
OVERSPEED
Overspeed:
•
>150% base speed when in Sensorless Vector mode
28
ANOUT FAULT
AOUT overload on terminal 5:
• 10mA maximum
29
DIGIO 1 (T9)
FAULT
DIN3 overload on terminal 9:
• 20mA maximum
30
DIGIO 2 (T10)
FAULT
DOUT2 overload on terminal 10:
• 150mA maximum either individually or as the sum of
terminals 6 & 10
31
UNKNOWN
Unknown trip
32
OTHER
"OTHER" trip is active (Trip ID 34 to 44 inclusive)
34
MAX SPEED LOW
During Autotune the motor is required to run at the
nameplate speed of the motor. If MAX SPEED RPM limits the
speed to less than this value, an error will be reported.
Increase the value of MAX SPEED RPM up to the nameplate
rpm of the motor (as a minimum). It may be reduced, if
required, after the Autotune is complete.
35
MAIN VOLTS LOW
The mains input voltage is not sufficient to carry out the
Autotune. Re-try when the mains has recovered.
36
NOT AT SPEED
The motor was unable to reach the required speed to carry
out the Autotune. Possible reasons include:
• motor shaft not free to turn
• the motor data is incorrect
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