Setting The Torque Limit Function - Mitsubishi Electric QD77MS User Manual

[4] Setting the torque limit function

Setting item
Torque limit
[Pr.17]
setting value
OPR torque limit
[Pr.54]
value
Setting item
Torque output
[Cd.101]
setting value
: Refer to Section 5.2 "List of parameters" or Section 5.7 "List of control data" for setting details.
: Torque limit value: Will be an upper limit value of the torque change value. Even if a larger value has been
mistakenly input for the torque change value, it is restricted within the torque limit setting values to prevent an
erroneous entry. (Even if a value larger than the torque limit setting value has been input to the torque change
value, the torque value is not changed.)
: Torque output setting value: to be taken at the start of positioning, and used as a torque limit value. If the value
is "0" or larger than the torque limit setting value, the parameter "torque limit setting value" is taken at the start.
[QD77MS4 use]
PLC CPU
Fig. 13.12 Limiting the torque to the servo amplifier (Axis 1)
(1) To use the "torque limit function", set the "torque limit value" in the
parameters shown in the following table, and write them to the Simple
Motion module.
a) The set details are validated at the rising edge (OFF
READY signal [Y0].
Setting
value
Set the torque limit value as a percentage.
Set the torque limit value after the "[Pr.47] Creep
speed" is reached. Set as a percentage.
b) The set details are validated at the rising edge (OFF
positioning start signal [Y10].
Setting
value
Set the torque output value as a percentage.
(2) The "torque limit value" set in the Simple Motion module is set in the
"[Md.35] Torque limit stored value/forward torque limit stored value" or
"[Md.120] Reverse torque limit stored value".
QD77MS4
Buffer memory
26
Torque limit setting value
86
OPR torque limit value
New torque value/
1525
forward new torque value
1564
New reverse torque value
1552
Torque output setting value
Torque limit stored value/
826
forward torque limit stored value
891
Reverse torque limit stored value
Setting details
Setting details
(Note): Refer to Chapter 5 for buffer memory address of QD77MS16.
13 - 26
Chapter 13 Control Sub Functions
ON) of the PLC
ON) of the
Servo amplifier
Positioning control
Torque limit value
Factory-set
initial value
300
300
Factory-set
initial value
0