Mitsubishi Electric MELFA CR750 Series Instruction Manual page 69

Error
number
Countermeasure
Error message
Cause
Countermeasure
Error message
Cause
Countermeasure
Error message
Cause
Countermeasure
H238n * Error message
(The letter
Cause
"n" indicates
Countermeasure
the axis
number 1 to
8.)
H6640 * Error message
(Detail
Cause
number =
Countermeasure
85000)
C7081 Error message
(Detail
Cause
number =
Countermeasure
05000)
L7378 Error message
Cause
Countermeasure
Causes of the error and its countermeasures
The monitoring mode status of the functional safety is inconsistent between the main CPU
and the servo CPU. After turning OFF the power, turn ON the power again to reset the error.
If the same error recurs, contact the manufacturer.
And, this error can be generated in the case the pulse with the width above 7ms is input to a
counterpart of the duplex inputs within the period form the change of DSI signal state to the
change of monitoring mode(within the reaction time), as shown in the chart below. In such a
case, remove the cause of such a pulse and prevent such a pulse input.
SF process error (MCPU)
The safety function of the servo CPU is not executed properly.
Improper operation of the servo CPU safety function is detected. After turning OFF the
power, turn ON the power again to reset the error. If the same error recurs, contact the
manufacturer.
If CR750-Q/CR751-Q/CRnQ-700 robot controller is used, this error is generated when the
power is turned off only on the drive unit side. In such a case, turn on the drive unit and
reset the error.
SF process error (MCPU)
A safety function error is detected.
A process error of the safety function is detected for the main CPU. After turning OFF the
power, turn ON the power again to reset the error. If the same error recurs, contact the
manufacturer.
Enable/disable setting inconsistency (xxx)
The enable/disable setting of the safety monitoring function is inconsistent between the
main CPU and the servo CPU.
The enable/disable status of the function displayed in the "(xxx)" part of the error message
is inconsistent between the main CPU and the servo CPU. Check the relevant parameter
setting, turn OFF the power, and turn it ON again.
* One of the following is displayed in "(xxx)".
DSI, SLS, SLP, or STR
SF process error (SCPU)
A safety function error is detected.
A process error of the safety monitoring function is detected for the servo CPU. After turning
OFF the power, turn ON the power again to reset the error. If the same error recurs, contact
the manufacturer.
Illegal setting of the dedicated signal parameter SFMODE
The setting of the dedicated signal parameter SFMODE (safety mode output) is illegal.
An error (output bit width of the output signal is less than 3 bits) exists in the dedicated
output SFMODE setting. Correct the parameter setting.
Illegal CRC during parameter writing
The parameter CRC value is illegal.
An error is detected in the CRC check in the writing process of a parameter related to the
safety monitoring function. Check the communication environment between the robot
controller and the personal computer, and perform the writing operation again.
Change password
The password has not been changed from the initial value.
The password to change functional safety related parameters has not been changed from
the initial value. Change the password to new one, and perform parameter setting.
The factory default password is "MELFASafetyPSWD".
List of errors related to the safety monitoring function 6-57
6 Troubleshooting