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Error no. H2231 *
1Error list
H2231 * Error message Mismatch of Dual Safety Output Feedback
Cause State of Dual Safty Output and the feeedback do not match
Measures Turn the power OFF and ON once
If the same error recurs, contact the manufacturer.
H2240 * Error message Origin data change
Cause The origin data is changed during execution of the position monitoring function.
Measures The error occurs when the origin data is changed by setting the origin during execution of the position
monitoring function. After turning OFF the power, turn ON the power again to reset the error.
C2250 Error message Safety function execution disabled (No origin setting)
Cause The safety function cannot be executed because the origin is not set.
Measures The safety monitoring function is not activated when the origin is not set. Set the origin.
H2260 * Error message Safety Unit communication error
Cause Extended Safety Unit communication failed
Measures To use the safety monitoring function, it is necessary to connect the extended safety unit of the robot
safety option to the controller. Connect the extended safety unit.
If the error occurs even when the Safety extension unit is connected, check that the Safety extension unit
is powered on. Or check whether pseudo-input mode has been enabled. If none of these solutions rectify
the problem, the Safety extension unit may be faulty. Contact Mitsubishi Electric.
H2261 * Error message Extended safety unit's No. error
Cause The extended safety unit’s station No. is illegal
Measures Set the extended safety unit’s station No. to 2
H2270 Error message Cannot servo ON (SS1/STO active)
Cause The servo cannot be turned ON while SS1/STO is active
Measures Disable SS1 before turning the servo ON
H2280 Error message SS1 deceleration time exceeded
Cause The robot didn't stop within deceleration time from SS1 enabled
Measures Please confirm the robot movement and the load, stop speed parameter (SFSPZERO) setting
H2281 Error message SS2 deceleration time exceeded
Cause The robot didn't stop within deceleration time from SS2 enabled
Measures Please confirm the robot movement and the load, stop speed parameter (SFSPZERO) setting
H2282 Error message SOS (Position error)
Cause Detect the change of position FB on SOS
Measures An error that the position FB has changed on SOS due to external force was detected.
Eliminate the cause of the external force or perform the risk assessment. Then modify the value of the
parameter "SOSTLRNC" to extend the acceptable range of SOS.
Error message SOS (Speed error)
Cause Detect FB speed over on SOS
Measures Please check external force or related parameter settings
Error message SOS (Position command error)
Cause Detect the change of position CMD on SOS.
Measures Please confirm the robot movement or related parameter setting
Error message SOS (Speed command error)
Cause Detect CMD speed over on SOS.
Measures Please confirm the robot movement or related parameter setting
H230n
(n indicates
the axis
number (1 to
8).)
Error message SLS (Joint Speed Error)
Cause Speed monitor detected the speed over
Measures A speed feedback exceeding the limit speed is detected by the speed monitoring function. Check the robot
movement or the monitoring speed setting. Or else, check the delay time (parameterSLSDLY) setting.
Error No. Error cause and measures
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