Torque Control Is Not Exercised Normally; Torque Control - Mitsubishi Electric FR-V500 Series Instruction Manual

Troubleshooting
6.4.9

Torque control is not exercised normally

(1) Torque control

Torque control is not
exercised normally.
Is torque control selected
in control mode selection
(Pr. 800)?
Y
Is the phase sequence
of the motor wiring correct?
Y
Have you set the
motor type?
Y
Is the vector inverter motor
(SF-V5RU, SF-VR), standard
motor with encoder (SF-JR)
or constant-torque motor with
encoder (SF-HRCA) used?
Y
Is the wiring length
short?
Y
Is the phase sequence
of the encoder correct?
Y
Have you set the number
of encoder pulses (Pr. 851)
and is it correct?
Y
Does the voltage of the
torque command signal
(across 3-5) change?
Y
Does the torque command
value match the inverter-
recognized value?
Y
Have you set the speed
limit level and is that
value correct?
Y
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1
N
Select torque control
in control mode
selection (Pr. 800).
N
Check the wiring and
perform correct wiring.
N
Set the motor in
motor setting (Pr. 71).
N
N
Perform offline auto tuning (Pr. 71, Pr. 80, Pr. 81, Pr. 83, Pr. 84, Pr. 96)
or enter the motor constants (Pr. 90 to Pr. 94).
N
Perform correct
wiring.
N
Set the number of
encoder pulses
(Pr. 851).
N
Speed setting potentiometer fault
Disconnection between the setting
potentiometer and terminal
N
Calibrate the torque command
bias/gain . terminal 3
(Pr. 904, Pr. 905).
N
N
Is an external
command used?
Y
N
Is an analog
input used?
Y
Calibrate the speed
setting bias/gain
terminal 2
(Pr. 902, Pr. 903).
Check the multi-speed settings
(Pr. 4 to 6, 24 to 27, 232 to 239).
Set speed limit in the parameters
(Pr. 805 to Pr. 807).
Is the corresponding
N
multi-speed signal
(RH, RM, RL, REX) on?
Turn on the multi-speed
Y
signal (RH, RM, RL, REX).
94