Motor Does Not Rotate; Vector Control - Mitsubishi Electric FR-V500 Series Instruction Manual

Troubleshooting
6.4.3

Motor does not rotate

l
(1) Vector contro
The motor does
not rotate.
Are the charge lamp on
and the control panel
LED indication given?
Y
There is no alarm output
to the control panel.
Check the alarm definition,
Y
remove the cause of the alarm,
and reset the inverter.
Are the encoder types and
rotation direction correct?
Is the connection correct?
Check the encoder rotation
Y
direction.Check the connection
Is the secondary side wiring
(U, V, W) of the inverter correct
without a break in cables?
Perform wiring correctly.
Y
Is the start command
input?
PU: Press FWD (REV).
External: Turn on STF (STR).
Also check that both STF and
Y
STR are not on.
Are the MRS and
RES signals both off?
Y
Turn off the MRS and RES signals.
Is the maximum frequency
(Pr. 1) other than 0?
Make the maximum setting
Y
correctly.
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 the
electromagnetic
brake open?
Open the brake.
Y
Is operation performed
without using
communication?
Is any cable open?
Are the station number
Y
and so on set correctly?
Is speed control
exercised?
Torque
Pr. 800
Speed
N
Are the control
panel LED off and
the charge lamp on?
N
1) Contact fault of the control
N
2) Control power is not supplied.
Are the control
N
panel LED on and
the charge lamp off?
N
Are the earth leakage
breaker and magnetic
N
contactor on?
Turn on the earth leakage
breaker and magnetic contactor.
Y
Are the voltages of the
main circuit power supply
N
voltage terminals (R, S,
T) normal?
Y
N
Please contact your sales
representative.
N
N
N
N
N
Y
Wire the cables correctly.
Make communication setting.
N
Page 87 Page 87
2
Y
panel
(Check whether jumpers are
connected across R-R1 and
S-S1.)
Y
1) The jumper across P-P1 or
DC reactor is disconnected.
2) Connect a jumper or DC
reactor.
N
N
Check for a low voltage, phase
failure, poor connection, etc.
and take corrective action.
86
1
Page 87 Page 87
Is the speed
N
command input?
Y Input the speed command.
(Refer to page 34 .)
Is the speed command
N
higher than the start
speed?
Set the speed command
Y
higher than the Pr. 13
"start speed" value.
Is an external
N
command used for the
speed command?
Set the speed from the PU.
Y
N
Is an analog input used?
Y
Apply a voltage to the Turn on the multiple
analog input terminals speed (*RH, RM, RL,
(*across 2-5).
REX).
Also, to calibrate the
*The terminal functions
terminal 2, adjust the bias
vary with input terminal
and gain of the analog
assignment (Pr. 180 to
voltage using Pr. 902 and
Pr. 183, Pr. 187).
Pr. 903.
*Terminal 1 depending
on the setting of Pr. 73,
Pr. 868 or Pr. 805
Y
Is the torque limit
N
command input?
Set the torque limit.
Y
(Refer to page 34 .)
(Setting using parameters)
N
Is an external command
used for torque limit?
Y
Set the torque limit
(Pr. 810 to Pr. 817).
N
Is an analog input used?
Y
Set the torque limit.
Apply a voltage to the
analog input terminals
(across 3-5). Also, to
calibrate the terminal 3,
adjust the bias and gain of
the analog voltage using
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 88.)