Stop Cause Lists - Mitsubishi Electric MELSEC iQ-R Series User Manual

Stop cause lists

Stop causes during axis operation
The following shows stop causes during axis operation and the process when each cause occurs.
Cause Stop cause
No.
1 "Forced stop input" is FALSE
2 Drive unit power supply is OFF
Drive unit network disconnection
detection
Drive unit error
Forced stop input to the drive unit
Enable of MC_Power is FALSE
ServoON of MC_Power is FALSE
(When AxisName.Pr.StopMode_ServoOff
is "4: Servo OFF After Immediate Stop")
3 Hardware stroke limit upper/lower limit
error occurrence
4 CPU module error occurrence
PLC READY [Y0] is OFF
5 Software stroke limit upper/lower limit
error occurrence
6 Axis error detection
7 Execute of MC_Stop is TRUE
8 "Stop signal" of external input signal is
TRUE
*1 For each operation of the stop process, refer to the following.
Page 140 Stop processes for single axis
*2 The servo turns OFF in the driver side and immediate stop is performed, and also the motion side command is stopped.
*3 Operation differs depending on the setting value selected in AxisName.Pr.StopMode_ServoOff. For details, refer to the following.
Page 144 Stop causes by ServoON input of MC_Power
*4 If an axis error (the error that transits the state into the "1: ErrorStop" status) occurs in the FB which can be linked by the buffer mode,
deceleration stop will be performed from the error occurrence.
*5 When Execute of MC_Stop is FALSE at stop completion, the axis status (AxisName.Md.AxisStatus) after stop will be "4: Standstill".
Precautions
Provide the emergency stop circuits outside the servo system to prevent cases where danger may result from abnormal
operation of the overall system in the event of an external power supply fault or servo system failure.
4 START AND STOP
138
4.4 Stop
Stop axis
Each axis/All
axes
Each axis
*3
Each axis
All axes
Each axis
*4
Each axis
Each axis
Each axis
Axis status
(AxisName.Md.AxisStatus)
During After stop
deceleration
stop

1: ErrorStop

1: ErrorStop
1: ErrorStop 1: ErrorStop
1: ErrorStop 1: ErrorStop
1: ErrorStop 1: ErrorStop
1: ErrorStop 1: ErrorStop
*5
2: Stopping 2: Stopping
No change 4: Standstill
*1
Stop process
*2
Immediate stop
*2
Immediate stop
Deceleration stop/immediate stop
(Follows
AxisName.Pr.StopMode_HwStrokeLimit)
Deceleration stop/immediate stop
(Follows System.Pr.StopMode_All)
Deceleration stop/immediate stop
(Follows
AxisName.Pr.StopMode_SwStrokeLimit)
Deceleration stop/immediate stop
(Follows AxisName.Pr.StopMode_General)
Deceleration stop
(Follows the deceleration set in the FB)
Deceleration stop/immediate stop
(Follows AxisName.Pr.StopMode_General)