Mitsubishi Electric RD77MS2 User Manual page 595

Error code Error name
(Hexadecimal)
1926H Start not possible
1927H Start not possible
1928H Start not possible
1929H Start not possible
1930H Hold error
1931H Flash ROM write
error
1932H Flash ROM sum
check error
1933H Flash ROM sum
check error
1934H Synchronous
restoration data sum
check error
193EH Connected device
setting error
193FH Operation cycle time
over error
1940H Start at home
position
Error details and causes
Start is requested when "[Cd.100] Servo OFF
command" is "1: Servo OFF".
[Operation status at error occurrence]
The system does not start positioning.
Start is requested when the servo alarm occurs.
[Operation status at error occurrence]
The system does not start positioning.
Start is requested during the forced stop of controller.
[Operation status at error occurrence]
The system does not start positioning.
Start is requested when the servo READY signal is
turned OFF.
[Operation status at error occurrence]
The system does not start positioning.
In the CPU module parameter "Output at error stop",
the setting for the Simple Motion module is "Hold".
[Operation status at error occurrence]
At start: The system does not operate.
During operation: The system stops with the setting
(deceleration stop/sudden stop) of the detailed
parameter 2 sudden stop selection (stop group 3). (Note
that the deceleration stop only occurs during the
manual pulse generator operation.)
Data is not written to the flash ROM.
[Operation status at error occurrence]
At start: The system does not operate.
While data is written to the flash ROM, the power is
turned OFF.
[Operation status at error occurrence]
At start: The system does not operate.
While data is written to the flash ROM in the
synchronous parameter area, the power is turned OFF.
[Operation status at error occurrence]
At start: The system does not operate.
Synchronous restoration data reading is failure.
[Operation status at error occurrence]
The synchronous control initial value cannot be
restored.
The setting value (vendor ID, identification code) of the
"[Pr.100] Connected device" and the actually connected
device is mismatch.
[Operation status at error occurrence]
The communication between the connected devices or
later of target axis is not executed.
The calculation process time of the positioning etc.
exceeds the operation cycle.
[Operation status at error occurrence]
The operation continues.
• When the home position return retry invalid is set, the
near-point dog method machine home position return
is started with the home position return complete flag
turned ON.
• Scale origin signal detection method machine home
position return is started with the home position return
complete flag turned ON and the near-point dog
signal turned ON.
[Operation status at error occurrence]
The machine home position return does not start.
Remedy
Set "0: Servo ON" in the "[Cd.100] Servo OFF
command".
Reset the error after removing the servo alarm
referring to the "Servo Amplifier Instruction Manual".
Remove the cause of forced stop.
Do not request the start when the servo READY signal
is turned OFF.
Clear the setting of the CPU module parameter
"Output at error stop".
The flash ROM is expected to be at the end of its
writable life.
Reset the parameter and write it to a Flash ROM
again.
Reset the parameter and write to the flash ROM again.
The internal memory (nonvolatile) is expected to be at
the end of its writable life. Exchange the module.
Match the setting value of the "[Pr.100] Connected
device" to the actually connected device.
Review the content of the positioning or "[Pr.96]
Operation cycle setting" longer than the current setting.
• Validate the home position return retry function (set
value: 1).
• Move the work piece from the current position (on
home position) using the manual control operation,
then carry out a machine home position return again.
14 TROUBLESHOOTING
14.5 List of Error Codes
14
593