Mitsubishi Electric RV-FR Series Instruction Manual page 96

6 TROUBLESHOOTING
Error number
Error message
Cause
H8252
Solution
Error message
Cause
H8253
Solution
Error message
Cause
H8254
Solution
Error message
Cause
H8257
Solution
Error message
Cause
H8270 *
Solution
Error message
H8290 Cause
Solution
Error message
Cause
H8291
Solution
Error message
Cause
H8292 *
Solution
6-82 Error List for the Safety Monitoring Functions
Error causes and solutions
Safety comm. timeout
A timeout error occurred in the safety communication function (CC-Link IE TSN).
・ Check that the parameter "safety refresh monitoring time" set on the master
station is an appropriate value.
・ Check if measures against noise in the transmission path are taken and wiring
and devices have no problems.
・ Check that no online operation is being performed from a peripheral such as the
engineering tool, or no program or parameter is being written to the master station.
・ If the same error occurs again, the possible cause is a hardware failure. Contact
the manufacturer.
Safety comm. timeout
A timeout error (unacceptable delay) has occurred in the safety communication
function (CC-Link IE TSN).
・ Check that the parameter "safety refresh monitoring time" set on the master
station is an appropriate value.
・ Check that the parameter "transmission interval monitoring time" set on the
robot controller is an appropriate value.
・ Check if measures against noise in the transmission path are taken and wiring
and devices have no problems.
・ Check that no online operation is being performed from a peripheral such as the
engineering tool, or no program or parameter is being written to the master station.
・ If the same error occurs again, the possible cause is a hardware failure. Contact
the manufacturer.
Safety comm. timeout
A transmission interval error (communication destination) of the safety
communication function (CC-Link IE TSN) has occurred.
・ Check that the parameter "transmission interval monitoring time" set on the
master station (communication destination) is an appropriate value.
・ Check if measures against noise in the transmission path are taken and wiring
and devices have no problems.
・ Check that no online operation is being performed from a peripheral such as the
engineering tool, or no program or parameter is being written to the master station.
・ If the same error occurs again, the possible cause is a hardware failure. Contact
the manufacturer.
Safety comm. data error
A data error has occurred in the safety communication function (CC-Link IE TSN).
If the same error occurs again, the possible cause is a hardware failure. Contact
the manufacturer.
System bus error
A system bus error was detected.
・ Check the extension cable connection.
・ Check the mounting status of the module.
・ Take measures to reduce noise.
・ If the error occurs again, the possible cause is a hardware failure of the CPU
module, I/O module, master/local module, base unit, or extension cable. Contact
the manufacturer.
Safety connection error
A safety connection has not been established with the master station of the
communication destination.
Perform operation after safety connection has been established.
Safety connection timeout
Failed to establish the safety connection.
Check the conditions of the master station (communication destination), network
devices in the communication path, and wiring.
To change the timeout time settings, use the parameter "SCESTTM".
Out of range (Parameter: SCESTTM)
Safety connection timer value is out of range.
Check and correct the parameter "SCESTTM" for the safety connection
establishment timer.