Alarm Function Activated - Mitsubishi MELIMP Series Instruction Manual

If any of the messages in Table 6-2 appears, the drive unit is assumed to have failed. If the same
message reappears after an alarm reset, immediately replace the drive unit.
Table 6-2
Indication
Operation
panel Parameter
(Actual unit
characters)
(E. CPU)
(E. 6)
(E. 7)
(E. PE)
(E. BE)

6.1.2 Alarm function activated

If the alarm function is activated during motor operation, any of the displays in Table 6-3 is provided
on the operation panel or parameter unit.
If you ignore the alarm message and continue operation, the fault detection function is activated,
leading to an operation stop. When you noticed that the alarm function had been activated,
immediately remove its cause.
That the alarm function has been activated can be exported as an alarm signal.
MEMO
Table 6-3
Indication
Operation
panel Parameter
(Actual unit
characters)
(OL)
(oL)
(RB)
(TH)
(FN)
Protective
Function Name
Detection Level
CPU fault
Storage device
fault
Brake circuit fault
Refer to: Chapter 8, 8.7.2 Selection of the control circuit output
terminal functions
Protective Function Name
Detection Level
Overload 1
Pr. 22 setting [Section 8.5.6]
Overload 2
Main circuit DC voltage more
than 390V
Brake duty
More than 85% of the permissible
value
Motor overheat
More than 85% of the electronic
overcurrent protection level
Fan failure
Cooling fan fault
Refer to: Pr. 244 [Section 8.5.8]
6-5
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6. TROUBLESHOOTING
Estimated Cause ( ) and
Corrective Action (•)
The CPU malfunctioned.
The CPU failed.
The storage device failed.
The regenerative brake circuit failed.
• If E. BE reappears after a reset, immediately
switch power off.
Leaving power on will overheat the brake
resistor.
Related Protective Function
Acceleration-time overcurrent,
constant speed-time
overcurrent, deceleration-time
overcurrent, stall stop
Deceleration-time overvoltage
Deceleration-time overvoltage
Electronic overcurrent
protection
Fin overheat
6