Torque Limit Function; Control Details - Mitsubishi Electric MELSEC Q Series User Manual

10 FUNCTION DETAILS

10.13 Torque Limit Function

10.13.1 Control details

Control
OPR control OPR control
Positioning Position
control control
Manual JOG operation
control
Incremental feed operation
Motor maximum torque
Torque limit value1 "80"
Torque limit value2 "50"
Cd.11 Torque limit request
Torque limit value
This function is used to limit the generated torque to the torque limit value when the
torque of the servomotor exceeds the torque limit value.
The relation between the torque limit fnction and the each control is shown below.
1-axis linear control
2 to 4-axes linear
interpolation control
When "1" is set in "
Cd.11
limit values set in "
Cd.12
rotation torque limit value". At this time, "Torque limit (
turns ON. If the actual torque does not reach to the torque limit value even if "torque
limit request" is "1", "torque limit" does not turn ON.
The torque limit fnction can also be implemented in acceleration or deceleration. Also,
this function can be used in servo ON even not positioning.
1) 2)
0
Torque limit value1 "80"
POINT
(1) " Forward rotation torque limit value" and "
Cd.12
be separately set in the torque limit function. However, "
request" is valid to both of the forward rotation/reverse rotation, so set the
same value normally to both of them.
(2) When " Torque limit request" is "0", the torque limit value is set to the
Cd.11
motor maximum torque.
Torque limit function
Cd.12
Cd.13
Torque limit request", the torque is limited by the torque
Forward rotation torque limit value" and "
3)
1
Torque limit value2 "50"
10 - 25
MELSEC-Q
Set item
Forward rotation torque limit value
Reverse rotation torque limit value
Cd.13
Servo status 1: b13)"
Md.40
1)
1) Control with motor maximum torque
2) Limit with torque limit value 1
3) Limit with torque limit value 2
0
Reverse rotation can
Cd.13
Torque limit
Cd.11
: Valid
Reverse