Torque Limit Function - Mitsubishi Electric MELSEC iQ-R Series User Manual

Torque limit function

The "torque limit function" limits the generated torque to a value within the "torque limit value" setting range when the torque
generated in the servo motor exceeds the "torque limit value".
The "torque limit function" protects the deceleration function, limits the power of the operation pressing against the stopper,
etc. It controls the operation so that unnecessary force is not applied to the load and machine.
Relation between the torque limit function and various controls
The following table shows the relation of the "torque limit function" and various controls.
: Set when required (Set to "" when not used.)
: Setting not required (Use the initial value or a value within the setting range.)
Control type
Home position return
control
Major positioning
control
Manual control
Expansion control
*1 Shows the torque limit value when "[Cd.22] New torque value/forward new torque value" or "[Cd.113] Reverse new torque value" is set
to "0".
*2 Valid for the value set at start only. It cannot be changed during the home position return.
*3 For the setting method, refer to the servo amplifier manuals.
For MR-J5(W)-G: MR-J5-G/MR-J5W-G User's Manual (Parameters)
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Machine home position return control
Fast home position return control
Position control 1-axis linear control
2 to 4-axis linear interpolation control
1-axis fixed-feed control
2 to 4-axis fixed-feed control (interpolation)
2-axis circular interpolation control
3-axis helical interpolation control
1 to 4-axis speed control
Speed-position switching control, Position-speed switching control
Other control Current value changing
JUMP instruction, NOP instruction, LOOP to
LEND
JOG operation, Inching operation
Manual pulse generator operation
Speed-torque control
search engine
Torque limit Torque limit value
function
 "[Pr.17] Torque limit setting value"
or
"[Cd.101] Torque output setting value".
The home position return method that can
change the torque limit value during the
home position return is set in home position
return parameters of the servo amplifier.

"[Pr.17] Torque limit setting value"
or

"[Cd.101] Torque output setting value".








Setting value is invalid.


"[Pr.17] Torque limit setting value"
or

"[Cd.101] Torque output setting value".

Torque limit value is continued after control
mode switching.
8 CONTROL SUB FUNCTIONS
8.3 Functions to Limit the Control
*1
*2
*3
8
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