Fuji Electric ALPHA7, User Manual

Page: 93 / 662

CHAPTER 2 WIRING
2-46
Description of I/O Signals
2
Torque limit 0: Sequence input signal (Reference value 19)
Torque limit 1: Sequence input signal (Reference value 20)
Limitations are set on the output torque of the servomotor.
 Function
Limitation on the output torque of the servomotor by turning on the torque limit signal can be set.
Specify the torque limit in increments of 1 [%] in the range from "0" to the maximum output torque.
The maximum output torque is 300 [%] if the rated torque is 100 [%].
Note that the setting of PA1_37 to 40 (acceleration and deceleration time) may be ineffective if the
output torque is limited during acceleration or deceleration. The
enabled
torque limit is as follows.

Torque limit under speed control and position control
The following settings can be specified as a limitation set on the torque.
[1] TREF terminal voltage
[2] Forward rotation torque limit (PA1_27), reverse rotation torque limit (PA1_28)
[3] Second torque limit (PA2_58)
[4] Third torque limit (PA2_60)
If "0" is specified as torque limit selection (PA2_57), the settings of torque limit 0 and torque limit 1
are enabled. Only torque limit 1 is enabled for LS type.
Torque limit
1
Torque limit
0
Torque limit
OFF
OFF Value of [2]
ON [2] or [1], whichever is smaller
ON
OFF [3] or [2], whichever is smaller
ON [3] or [1], whichever is smaller
If forced stop or servo-on is turned off, or if an over-travel or minor failure alarm is detected,
limitation is set at [4] third torque limit (PA2_62
＝
4 or 5 or 20
□□
) the setting can be changed.
Torque limit
1
Torque limit
0
Torque limit
OFF
OFF [4] or [2], whichever is smaller
ON [4], [2] or [1], whichever is the smallest
ON
OFF [4], [3] or [2], whichever is the smallest
ON [4], [3] or [1], whichever is the smallest