Mitsubishi Electronics FR-V500 Troubleshooting Motor does not rotate, Vector control

Troubleshooting

6.4.2Motor does not rotate

(1) Vector control

The motor does not rotate.

1 Page 84

Are the charge lamp on	N
and the operation panel
LED indication given?

Is the speed command input?

N

Y		Are the operation
		panel LED off and
There is no alarm output	N	the charge lamp on?

to the operation panel
Check the alarm definition,	N

Yremove the cause of the alarm, and reset the inverter.

Are the PLG types and	N	Are the operation
rotation direction correct?		panel LED on and
Is the connection correct?		the charge lamp off?

Y

1)Contact fault of the operation panel

2)Control power is not supplied. (Check whether jumpers are connected across R-R1 and S-S1.)

Y

Y

Is the speed command higher than the start speed?

Y

Is an external command used for the

Input the speed command. (Refer to page 33.)

N

Set the speed command higher than the Pr. 13 "start speed" value.

N

						1) The jumper across P-P1 or
Y	Check the PLG rotation direction.			N		DC reactor is disconnected.
	Check the connection					2) Connect a jumper or DC
						reactor.
			Are the earth leakage			N
Is the secondary side wiring		N	breaker and magnetic
(U, V, W) of the inverter			contactor on?
correct without open cables?					Turn on the earth leakage

speed command?

Y

Is an analog input used?

Y

Set the speed from the PU.

N

				Y	breaker and magnetic contactor.
Y		Perform wiring correctly.
			Are the voltages of the
		N	main circuit power supply			N
Is the start command
			voltage terminals (R, S,
input?
			T) normal?
	PU: Press FWD (REV).
				Y	Check for a low voltage, phase
	External: Turn on STF (STR).				failure, poor connection, etc.
Y	Also check that both STF and				and take corrective action.
	STR are not on.

Are the MRS and	N
RES signals both off?	Please contact your sales
	representative.

Apply a voltage to the analog input terminals (*across 2-5).

Also, to calibrate the No. 2 terminal, adjust the bias and gain of the analog voltage using Pr. 902 and Pr. 903. *No. 1 terminal depending

on the setting of Pr. 73, Pr. 868 or Pr. 805

Y

Is the torque restriction command input?

Turn on the multiple speed (*RH, RM, RL,

REX).

*The terminal functions vary with input terminal assignment (Pr. 180 to Pr. 183, Pr. 187).

N

Y Turn off the MRS and RES signals.

Is the maximum frequency N

(Pr. 1) other than 0?

YSet the torque restriction. (Refer to page 33)

(Setting using parameters)

Is an external command	N
used for torque restriction?

Y		Make the maximum setting
		correctly.
			N
Is reverse rotation prevention
(Pr. 78) set to enable rotation
in the rotation direction?
	Set reverse rotation prevention
Y	(Pr. 78) correctly.

When the electromagnetic

brake is used, is theN electromagnetic brake open?

Open the brake.

Y

Y

Is an analog input used?

Y

Apply a voltage to the analog input terminals (across 3-5). Also, to calibrate the No. 3 terminal, adjust the bias and gain of the analog voltage using

Set the torque restriction (Pr. 810 to Pr. 817).

N

Set the torque restriction.

Is operation performed without using communication?

Y

Is speed control exercised?

Pr.800

N
Is any cable open?	N
Are the station number
and so on set correctly?

Y

Wire the cables correctly.

NMake communication setting.

Torque

Pr. 904 and Pr. 905.

Set "20" (V/F control) in Pr. 800 and operate in V/F control.

(For trouble shooting in V/F control, refer to page 85)

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