Setting Method; Checking "Limiting Torque" Status - Mitsubishi Electric MELSERVO-JET MR-JET User Manual

Setting method

Servo parameter setting
The maximum torque is always limited by the values of [Pr. PA11 Forward rotation torque limit] and [Pr. PA12 Reverse rotation
torque limit] during operation.
Set servo parameters in relation to the rated torque or continuous thrust as 100.0 [%].
Servo parameter Symbol
PA11 TLP
PA12 TLN
PE53 TLMX1
Relation between servo parameters and objects
[Pr. PA11] and [Pr. PA12] are used for [Positive torque limit value (Obj. 60E0h)] and [Negative torque limit value (Obj. 60E1h)].
For [Pr. PA14 Travel direction selection] and [Pr. PC29.3 Torque POL reflection selection], the relationship between objects
and servo parameters that limit the torque changes as follows.
Setting value
[Pr. PC29.3] [Pr. PA14]
0: Enabled 0
1
1: Disabled 0
1
[Pr. PC78.1] setting value
0: [Pr. PE53] Disabled
1: [Pr. PE53] Enabled

Checking "Limiting torque" status

TLC (Limiting torque) and Bit 13 (S_TLC) of [Status DO1 (Obj. 2D10h)] turn on when the servo motor torque reaches the
torque that was limited by the forward rotation torque limit and the reverse rotation torque limit.
Name Outline
Forward rotation torque Set the servo parameter when limiting the torque of the servo motor for CCW
limit power running or CW regeneration, or when limiting the thrust of the linear
servo motor for positive direction power running or negative direction
regeneration.
Reverse rotation torque Set the servo parameter when limiting the torque of the servo motor for CW
limit power running or CCW regeneration, or when limiting the thrust of the linear
servo motor for positive direction power running or negative direction
regeneration.
Maximum torque limit 1 When [Pr. PC78.1 Maximum torque limit 1 selection] is set to "1" (enabled), the
torque generated by the servo motor can be limited with this servo parameter.
[Pr. PA11 Forward rotation torque
limit]
[Positive torque limit value (Obj. 60E0h)]
[Negative torque limit value (Obj. 60E1h)]
[Positive torque limit value (Obj. 60E0h)]
[Positive torque limit value (Obj. 60E0h)]
Torque limit set by [Max torque (Obj. 6072h)]
Disabled
([Max torque (Obj. 6072h)] returns the maximum torque of the servo motor.)
Enabled
(The torque limit function set by [Pr. PE53] and [Max torque (Obj. 6072h)] is
enabled.)
[Pr. PA12 Reverse rotation torque
limit]
[Negative torque limit value (Obj. 60E1h)]
[Positive torque limit value (Obj. 60E0h)]
[Negative torque limit value (Obj. 60E1h)]
[Negative torque limit value (Obj. 60E1h)]
4 APPLICABLE FUNCTIONS
4.7 Torque limit
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