2.4 Driver Unit/Simple Absolute Unit Alarm Causes and Countermeasures
C2-14
ME0384-4A
Chapter 2 Troubleshooting
(2) Operation cancel level
Alarm name Causes/countermeasures
servo OFF
Cause: Travel command was issued in servo OFF status.
Countermeasure:
Execute travel commands after confirming servo ON status
(servo ON signal SV or positioning complete signal PEND is ON).
in homing incomplete
Cause:
Position travel command was input with home return status incomplete.
Countermeasure: Execute travel commands after confirming the home
return complete signal HEND is ON.
083 Numerical command with
homing incomplete
Cause: Absolute position numerical command was issued in
incomplete home return status.
(Direct numerical command via field network, etc.)
Countermeasure:
Perform home return motion, confirm the home return complete
signal HEND, and then perform numerical command.
home return execution
Cause: Travel command was issued during home return execution.
Countermeasure:
Perform home return motion, confirm the home return
complete signal HEND, and then perform travel command.
085 Position No. error during
travel
Cause: Position number that does not exist (invalid) in positioner mode
was specified.
Countermeasure: Check the position table again and specify a valid
in servo ON status
Cause: A software reset command was issued in servo ON status.
Countermeasure: Check that servo is in OFF status (SV signal is OFF
status) and issue a software reset command.
Position No. error during
teaching
Cause:
Position number outside the range was specified during teaching.
Countermeasure:
Set the specified position number to 128 or less in
positioner 1/2/3 mode, or 16 or less in positioner 5 mode.
while traveling
Cause: Input was performed while the present position write signal
PWRT was carrying out jog operation.
Countermeasure:
Input after making sure that JOG+/- signal is not ON
and the unit has stopped (moving signal MOVE is OFF).
PWRT signal detected
Cause: The present position write signal PWRT was input while home
return was incomplete.
Countermeasure: Input the home return signal HOME first, perform
home return, confirm that home return is complete
(HEND signal is ON) and then input the signal.
error
Cause: Communication error generated in total frame communication.
1)
Connector or SCON cable connector is not correctly connected.
2)
Interior signal line or SCON connection cable is disconnected.
3)
Terminal unit or terminal connector (for SCON) has not been mounted.
4) Communication error due to noise
Countermeasure: 1) 2)
Confirm that units are firmly connected together.
Disconnect the units and then connect them again. Contact
IAI if this reoccurs even after turning ON the power again.
3) Mount the terminal unit or terminal connector.
4) Take measures against noise, such as changing
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