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Check First When You Have A Trouble; Motor Does Not Start - Mitsubishi Electric FR-CS84-012 Instruction Manual

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Operation panel
indication
4 mA input fault
Name
The inverter output is shut off when the analog input current is 2 mA or less for the time set in Pr.778 4 mA input
Description
check filter. This function is available when Pr.573 4 mA input check selection = "2 or 3". (Refer to
This protective function is not available in the initial status.
• Check for a break in the wiring for the analog current input.
Check point
• Check that the Pr.778 setting is not too short.
• Check the wiring for the analog current input.
Corrective action
• Set the Pr.778 setting larger.
Operation panel
indication
Inverter output fault
Name
The inverter output is shutoff when a fault occurred on the inverter output side (load side) during operation when
"1 (initial value)" is set in Pr.631 Inverter output fault detection enable/disable selection. The inverter may not be
Description
able to detect errors when the carrier frequency or running frequency is too high.
Check for a ground fault in the motor and connection cable.
Check point
• Remedy the earth (ground) fault portion.
Corrective action
• Check the Pr.631 setting.
*4
Available for the FR-CS84-160 or lower or the FR-CS82S.
NOTE
• If protective functions with indication of "Fault" on the FR-LU08 or FR-PU07 are activated, "ERR" appears in the fault history
of the FR-LU08 or FR-PU07.
• If faults other than the above appear, contact your sales representative.
6.6

Check first when you have a trouble

• If the cause is still unknown after every check, it is recommended to initialize the parameters, set the required parameter values
and check again.
6.6.1

Motor does not start

Check
Possible cause
point
An appropriate power supply voltage is
not applied.
(The operation panel display is not
operating.)
Main
circuit
The motor is not connected properly.
E.LCI
E.E10
Countermeasure
Power on a molded case circuit breaker (MCCB), an earth leakage
circuit breaker (ELB), or a magnetic contactor (MC).
Check for the decreased input voltage, input phase loss, and wiring. ―
Check the wiring between the inverter and the motor.
If the commercial power supply-inverter switchover function is active,
check the wiring of the magnetic contactor (MC) between the inverter
and the motor.
FR-LU08 indication
4 mA input fault
FR-LU08 indication
6. PROTECTIVE FUNCTIONS
6.6 Check first when you have a trouble
1
2
page
139.)
3
5
6
7
8
9
10
Refer to
page
31
219

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