Mechanical Loss Compensation Function - Mitsubishi Electric A800 Plus Series Function Manual

5.5.6

Mechanical loss compensation function

By increasing the torque command value to compensate loss caused by factors such as mechanical friction (mechanical
loss), tension change due to mechanical loss can be prevented.
Pr. Name
1230
Winding/unwinding selection
R003
1419 Mechanical loss setting
R550 frequency bias
1420 Mechanical loss setting
R551 frequency 1
1421
Mechanical loss 1
R552
1422 Mechanical loss setting
R553 frequency 2
1423
Mechanical loss 2
R554
1424 Mechanical loss setting
R555 frequency 3
1425
Mechanical loss 3
R556
1426 Mechanical loss setting
R557 frequency 4
1427
Mechanical loss 4
R558
1428 Mechanical loss setting
R559 frequency 5
1429
Mechanical loss 5
R560
Block diagram
Pr.1429 L5
Pr.1427 L4
Pr.1425 L3
Motor speed
Pr.1423 L2
Pr.1421 L1
Pr.1419 LB
Initial value
0
0
1
1000% 900 to 1100%
0 to 400 Hz,
9999
9999
1000% 900 to 1100%
0 to 400 Hz,
9999
9999
1000% 900 to 1100%
0 to 400 Hz,
9999
9999
1000% 900 to 1100%
0 to 400 Hz,
9999
9999
1000% 900 to 1100%
0 to 400 Hz,
9999
9999
1000% 900 to 1100%
Mechanical loss compensation value
N1 N2 N3 N4
Pr.1420 Pr.1422 Pr.1424 Pr.1426
Mechanical loss setting frequency
TENSION SENSORLESS TORQUE CONTROL
Tension sensorless torque control details
Setting
range
Winding
Unwinding
Set the bias compensation value for the mechanical
loss compensation function.
Set the frequency for the mechanical loss 1.
Set the compensation value for the mechanical loss 1.
Set the frequency for the mechanical loss 2.
Set the compensation value for the mechanical loss 2.
Set the frequency for the mechanical loss 3.
Set the compensation value for the mechanical loss 3.
Set the frequency for the mechanical loss 4.
Set the compensation value for the mechanical loss 4.
Set the frequency for the mechanical loss 5.
Set the compensation value for the mechanical loss 5.
Pr.1230 = 0 (winding)
1
-1
Pr.1230 = 1 (unwinding)
Motor speed
N5
Pr.1428
Description
Torque after
mechanical loss
compensation
135
5