Trips & Fault Finding 10-4
AC30V series Variable Speed Drive
21
• Not yet implemented ( reserved for large frame)
22
The DC link ripple voltage is too high:
• Check for a missing input phase
•
Repetitive start / stop or forward reverse action.
23
Lost Base Modbus communications:
• A break in the Base Modbus communications has been detected. Refer to “Appendix A Modbus TCP”.
24
24V rail is low
• Output overload due to excess current being drawn from the 24v terminal.
25
Only for PMAC motor : When using the Start feature in Sensorless Vector Control, the real speed hasn’t reached
the speed setpoint after 5 seconds to move from open to closed loop control or to move from closed to open
loop
26
Overspeed:
• >150% base speed when in Sensorless Vector mode
27
Attempt to run the motor with the Safe Torque Off active
• Check the STO wiring. It may be necessary to power the drive off and on to completely clear this event.
28
The drive has been configured to run in Closed Loop Vector control mode which requires a Pulse Encoder IO
Option, but the IO Option has not been correctly configured.
29
An internal cooling fan has failed. This will reduce the lifetime of the power electronics.
•
Return the power stack to a Parker Hannifin repair centre.
30
Current feedback phase missing
• Check motor phase connections
31
A Power Loss Ride Through sequence has occurred and either
has been exceeded or the
motor speed has reached a zero speed during the sequence.
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