YASKAWA CIPR-GA50C series Technical Manual page 267

Code Name
Note:
• The drive detects this error if the DC bus voltage is more than the ov detection level when the Run command has not been input (while the drive is stopped).
• The ov detection level is approximately 410 V with 200 V class drives. The detection level is approximately 820 V for 400 V class drives.
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
Code Name
PASS Modbus Communication Test
Code Name
PF Input Phase Loss
Note:
• The drive detects this error if the DC bus voltage changes irregularly without regeneration.
• If the drive detects this error, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
• Use L8-05 [Input Phase Loss Protection Sel] to enable and disable PF detection.
Code Name
PGo Encoder (PG) Feedback Loss
Note:
• The drive detects this error if it does not receive the speed detection pulse signal from the encoder in the detection time set in F1-14 [Encoder Open-Circuit Detect Time].
• If the drive detects this error, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will activate.
• If the drive detects this error, it will operate the motor as specified by the stopping method set in F1-02 [PG Open Circuit Detection Select].
Code Name
rUn Motor Switch during Run
Note:
If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
Code Name
SE Modbus Test Mode Error
Note:
If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
Code Name
SToF Safe Torque OFF Failure
Note:
If the drive detects this error, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
YASKAWA SIEPC71061753A GA500 Technical Manual
Causes
Electrical interference caused a drive malfunction.
Causes
The MEMOBUS/Modbus communications test is
complete.
Causes
There is a phase loss in the drive input power.
Loose wiring in the input power terminals.
The drive input power voltage is changing too
much.
Unsatisfactory balance between voltage phases.
The main circuit capacitors have become
unserviceable.
Causes
The encoder cable is disconnected or wired
incorrectly.
The encoder is not receiving power.
The holding brake is stopping the motor.
Causes
The drive received a Motor 2 Selection [H1-xx =
16] during run.
Causes
MEMOBUS/Modbus communications self-
diagnostics [H1-xx = 67] was done while the drive
was running.
Causes
One of the two terminals H1-HC and H2-HC
received the Safe Disable input signal.
The Safe Disable input signal is wired incorrectly.
There is internal damage to one Safe Disable
channel.
7.5 Minor Faults/Alarms
Possible Solutions
• Examine the control circuit lines, main circuit lines, and
ground wiring, and decrease the effects of electrical
interference.
• Make sure that a magnetic contactor is not the source of the
electrical interference, then use a Surge Protective Device if
necessary.
• Set L5-01 ≠ 0 [Number of Auto-Restart Attempts ≠ 0 times].
Possible Solutions
The PASS display will turn off after communications test mode is
cleared.
Possible Solutions
Correct all wiring errors with the main circuit power supply.
Tighten the screws to the correct tightening torque.
• Examine the supply voltage for problems.
• Make the drive input power stable.
• Examine the supply voltage for problems.
• Make the drive input power stable.
• If the supply voltage is good, examine the magnetic contactor
on the main circuit side for problems.
• Examine the capacitor maintenance time in monitor U4-05
[CapacitorMaintenance].
• If U4-05 is more than 90%, replace the capacitor. Contact
Yaskawa or your nearest sales representative for more
information.
• Examine the supply voltage for problems.
• Re-energize the drive.
• If the alarm stays, replace the circuit board or the drive. For
information about replacing the control board, contact
Yaskawa or your nearest sales representative.
Possible Solutions
Examine for wiring errors or disconnected wires in the encoder
cable, and repair problems.
Examine the encoder power supply.
Release the holding brake.
Possible Solutions
Make sure that the drive receives the Motor 2 Selection while the
drive is stopped.
Possible Solutions
Stop the drive and do MEMOBUS/Modbus communications self-
diagnostics.
Possible Solutions
• Make sure that the Safe Disable signal is input from an
external source to terminals H1-HC or H2-HC.
• When the Safe Disable function is not in use, connect
terminals H1-HC and H2-HC.
Replace the board or the drive. For information about replacing
the control board, contact Yaskawa or your nearest sales
representative.
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