Mitsubishi Electric QD75MH1 User Manual page 583

12 CONTROL SUB FUNCTIONS
Each operations
PLC READY signal (Y0)
All axis servo ON (Y1)
Start signal (Y10)
Torque limit setting
Pr.17
value (26)
Torque output setting
Cd.101
value (1552)
New toruque value
Cd.22
(1525)
Torque limit stored
Md.35
value (826)
1: The torque limit setting value or torque output setting value becomes effective at the PLC READY signal (Y0) rising edge
(however, after the servo turned ON.)
If the torque output setting value is "0" or larger than the torque limit setting value, the torque limit setting value will be its value.:
2: The torque limit setting value or torque output setting value becomes effective at the start signal (Y10)rising edge.
If the torque output setting value is "0" or larger than the torque limit setting value, the torque limit setting value, the torque limit setting
value will be its value.
3: The torque change value is cleared to "0" at the start signal (Y10) rising edge.
[2] Control details
The following drawing shows the operation of the torque limit function.
1
0
0
0 300
Fig. 12.12 Torque limit function operation
[3] Precautions during control
(1) When limiting the torque at the "
that " Cd.22
value besides "0", the "
torque will be limited at that value. (Refer to Section 12.5.4 "Torque change
function" for details about the "new torque value".)
(2) When the "
limit setting value", an error occurs. (Error code: 995)
(3) When the operation is stopped by torque limiting, the droop pulse will remain
in the deviation counter. If the load torque is eliminated, operation for the
amount of droop pulses will be carried out.
300
2
100
3
0
300
Pr.17
New torque value" is set to "0". If this parameter is set to a
Cd.22
New torque value" will be validated, and the
Pr.54
OPR torque limit value "exceeds the "
12 - 26
MELSEC-Q
250
2
150
3
0
100
Torque limit setting value", confirm
Pr.17
1
2
3
0
150 150
Torque