YASKAWA GA800 Technical Reference page 399

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 be ON.
• 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
PGoH Encoder (PG) Hardware Fault
Note:
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will activate.
• Parameters F1-20 [Encoder 1 PCB Disconnect Detect] or F1-36 [Encoder 2 PCB Disconnect Detect] enable and disable PGoH detection.
• 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 assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
Code Name
SE Modbus Test Mode Error
Note:
If detected, the terminal assigned to H2-01 to H2-03 = 10 [MFDO Function Select = Alarm] will be ON.
Code Name
STo Safe Torque OFF
Note:
• The drive will not output an alarm signal for this alarm.
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 21 [MFDO Function Select = Safe Torque OFF] will activate.
Code Name
SToF Safe Torque OFF
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
TiM Keypad Time Not Set
Note:
• Parameter o4-24 [bAT Detection Selection] enables and disables TiM detection.
• If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
Code Name
TrPC IGBT Maintenance Time (90%)
Note:
If the drive detects this error, the terminal set to H2-01 to H2-03 = 10 [MFDO Function Selection = Alarm] will activate.
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
Causes
The encoder cable is disconnected or wired
incorrectly.
The encoder is not receiving power.
The holding brake is stopping the motor.
Causes
The encoder cable is disconnected.
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
Safe Disable inputs H1-HC and H2-HC are open.
There is internal damage to the two Safe Disable
channels.
Causes
One of the two terminals H1-HC or 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.
Causes
You put a battery in the keypad, but you have not set
the date and time.
Causes
The IGBT is at 90% of its expected performance life.
7.5 Minor Faults/Alarms
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
Correct any disconnected wires in the encoder cable.
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 terminal H1-HC and H2-HC.
• When the Safe Disable function is not in use, use a jumper to
connect terminals H1-HC and H2-HC.
Replace the board or the drive. Contact Yaskawa or your nearest
sales representative to replace the board.
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, use a jumper to
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.
Possible Solutions
Set the date and time with the keypad.
Possible Solutions
Replace the IGBT or the drive. Contact Yaskawa or your nearest
sales representative for more information.
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