Fine Adjustment For Torque Control; Control Block Diagram - Mitsubishi Electric FR-V500 Instruction Manual

Fine adjustment for torque control

2.5 Fine adjustment for torque control

Current loop gain parameter for adjusting torque control operation state is available with the FR-V500 series. Stable
operation is possible with the factory-set parameter.
Refer to the next page and adjust the parameters when torque pulsation or any other unfavorable phenomenon
occurs depending on the machine and operating conditions or when you want to exhibit the best performance that
matches the machine.
2.5.1

Control block diagram

Terminal
3
Pr.826
Torque
setting filter
Pr.836
Pr.805 torque command source/RAM
Parameter
Pr.806 torque command source /E PROM
FR-V5AP
Pulse
train
option
Pr.432 pulse train torque command bias
Pr.433 pulse train torque command gain
Pr.805 torque command source /RAM
FR-A5NC
Pr.806 torque command source /E PROM
option
FR-A5AX
Pr.447 digital torque command bias
FR-V5AH
Pr.448 digital torque command gain
digital
Pr.902 speed
input
setting terminal 2
option
bias
Pr.903 speed
setting terminal 2
gain
Terminal
2
Terminal
1
Pr. 917
terminal 1 bias
Pr. 918
terminal 1 gain
Speed
RT
setting filter
OFF
Pr.822
ON
Pr.832
RH
Pr. 808 forward
rotation speed
RM
limit
Pr. 809 reverse
RL
rotation speed
limit
REX
Speed limit
direct setting
PU
Torque command source selection
Pr.804
RT
OFF
Pr. 904, torque
ON
command terminal 3 bias
Pr. 905, torque
command terminal 3 gain
2
2
speed limit selection
Pr. 807
Max./min. speed
0
External
Pr.1
Acc/dec
PU
processing
Pr.2
Pr.79 *
2
PU/external
*
Pr.7, Pr.8
Pr.44, Pr.45 RT ON
Pr.110, Pr.111 X9 ON
Pr.16 Jog acceleration/
deceleration
0
1
0
Speed
feedback
< speed
limit
Constant power
value
0
range torque +
characteristic
-
selection
Pr.803
detection filter
Pr.827
1
Pr.837
2
3
4
+
Speed
control
-
Speed feedback
speed limit value
Pr.29, Pr.20, Pr.21
Pr.140 to Pr.143
Pr.380 to Pr.383
52
RT
Torque
OFF control +
p gain 1
Torque control
Pr. 824
integral time 1
Torque
Pr. 825
ON
control
p gain 2
Torque control
Pr. 834
integral time 2
Torque RT
Pr. 835
OFF
ON
IM
+
+
Encoder
+