330-00E8

Access safety self-test menu

Press MOD key, select 'Machine' menu, navigate to 'Safety functions' and select 'Self-test' option.

The self-test menu may be password protected depending on your machine configuration

Execute safety self-test

Follow the on-screen prompts to initiate the self-test sequence. The control will test all safety-related I/O, emergency stops, and guard door monitoring functions.

Ensure all personnel are clear of the machine during self-test execution

Verify self-test completion

Wait for the self-test to complete successfully. The control will display 'Self-test OK' and reset the interval timer.

Document the self-test completion time for maintenance records

Clear alarm and resume operation

Press CE key to clear alarm 330-00E8. Normal operation with open guard doors should now be possible.

If self-test fails, do not attempt to bypass safety functions

Access machine parameters

Press MOD key, select 'Machine parameters' and navigate to safety-related parameters (MP7760-MP7799 range).

Parameter changes require machine manufacturer authorization and safety validation

Check self-test interval setting

Verify MP7760 (self-test interval time) is set to appropriate value (typically 28800 seconds for 8 hours). Compare with machine documentation.

Document original parameter values before making any changes

Validate safety parameter consistency

Check related parameters MP7761-MP7765 for safety function timing and ensure they align with machine safety requirements.

Incorrect safety parameters can compromise machine safety certification

Perform controlled restart

After parameter verification/correction, perform controlled shutdown and restart to initialize new parameter values.

Execute immediate self-test after restart to verify proper operation

Check safety PLC status

Access PLC diagnostics via MOD > Diagnosis > PLC and verify safety PLC communication status and any error codes.

Look for communication timeout errors or safety PLC fault indicators

Verify safety I/O status

Check safety input/output status in the PLC diagnosis screen to identify any failed safety devices or communication links.

Do not override safety I/O faults - investigate and resolve root cause

Restart safety communication

Perform safety PLC restart via diagnosis menu or execute controlled system restart to re-establish communication.

Monitor communication re-establishment in real-time via PLC status display

Execute post-communication self-test

Once communication is restored, immediately execute safety self-test to verify all safety functions and clear the alarm.

Verify all safety devices respond correctly during self-test

Check system date and time

Access MOD > Machine > Date/Time settings and verify current date/time accuracy against external reference.

Compare with network time or external clock source for accuracy verification

Inspect RTC battery status

Check for low battery warnings in system diagnostics or observe if time resets after power cycles.

RTC battery replacement requires proper ESD precautions and system shutdown

Replace RTC battery if needed

If battery is failed, replace with manufacturer-specified battery type (typically CR2032) following proper shutdown procedures.

Replace battery during scheduled maintenance to avoid production interruption

Reset self-test interval

After time correction, execute safety self-test to reset interval timer and verify proper time tracking functionality.

Verify system maintains correct time after restart before resuming production