Mitsubishi Electric MELSERVO MR-J3-xT, Instruction Manual

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4. SIGNALS AND WIRING
4.6.3 Torque limit
CAUTION
If the torque limit is canceled during servo lock, the servomotor may suddenly
rotate according to position deviation in respect to the command position.
(1) Torque limit and torque
By setting parameter No. PA11 (forward torque limit) or parameter No. PA12 (reverse torque limit), torque
is always limited to the maximum value during operation. A relationship between the limit value and servo
motor torque is shown below.
0 100 100
[%]
CW direction Max. torque CCW direction
To
rq
u
e
Torque limit value in
parameter No. PA12 Torque limit value in
parameter No. PA11
(2) Torque limit value selection
As shown below, the forward torque limit (parameter No. PA11), or reverse torque limit (parameter No.
PA12) can be chosen using the external torque limit selection (RY(n+2)6).
Validated torque limit value
(Note) RY(n+2)6
CCW driving/CW regeneration CW driving/CCW regeneration
0 Parameter No. PA11 Parameter No. PA12
1 Parameter No. PC35
Note. 0: OFF
1: ON
(3) Limiting torque (RXn4)
RXn4 turns on when the servo motor torque reaches the torque limited.