[E9_Instantaneous Power Failure Warning]; [Ea_External Forced Stop Warning]; [Eb_Excessive Regeneration Warning]; [Ec_Overload Warning] - Mitsubishi Electric -MR-CV User Manual

[E9_Instantaneous power failure warning]

• [71 Undervoltage] may occur.
Cause
1.
An instantaneous power failure lasted for 30 ms or
more.

[EA_External forced stop warning]

• EM1 (Forced stop) of the converter unit was turned off.
Cause
1.
EM1 was turned off.
2.
An external 24 V DC power supply has not been
inputted.
3.
The converter unit has malfunctioned.

[EB_Excessive regeneration Warning]

• [73 Regenerative error] may occur.
Cause
1.
The converter regenerative load ratio exceeded
80 %.

[EC_Overload warning]

• [7E Overload 1] or [7E Overload 2] may occur.
Cause
1.
Perform the check methods for [7E Overload 1] and [7F Overload 2].
Page 82 [7E_Overload 1]

[EE_Decreased cooling fan speed warning]

• The cooling fan speed decreased to a warning level or lower.
Cause
1.
Perform the check method for [72 Cooling fan error].
Page 80 [72_Cooling fan error]
Check/action method
Check if the power supply has a problem.
After checking, cycle the power of the converter unit.
Check/action method
After ensuring safety, turn EM1 on.
Input the external 24 V DC power supply.
Replace the converter unit, then check the repeatability.
Check/action method
Perform the check method for [73 Regenerative error].
Page 80 [73_Regenerative error]
Check/action method
Check/action method
8 CONVERTER UNIT TROUBLESHOOTING
8.3 Handling methods for alarms/warnings
8
83