Fuji Electric ALPHA7, User Manual

Page: 107 / 662

CHAPTER 2 WIRING
2-60
Description of I/O Signals
2
 Relevant description
(1) Maximum rotation speed
If there is no load connected to the servomotor, the rotation speed is subject to a limitation on
PA1_26 (maximum rotation speed (for torque control)) with a variation of about ±100 [r/min] (due to
lack of speed control).
The speed limit can be selected with the setting of PA2_56 (speed limit selection at torque control).

VV type: input voltage of speed command [VREF] terminal, multi-step speed setting
(2) Torque setting filter
A filter can be set to the input voltage applied to the torque command [TREF] terminal with the
setting of PA1_60 (torque setting filter).
(3) Torque command scale/offset
The scale and offset of the input voltage applied to the torque command [TREF] terminal can be
adjusted, using PA3_33 (torque command scale) and PA3_34 (torque command offset).
(4) Output torque
The output torque of the servomotor has individual differences (variation) of about 0 to +5 [%]
under torque control. Continuous operation can be made if the output torque is within the rated
torque.
(5) Torque limit
Refer to “ Torque limit 0: Sequence input signal (Reference value 19), Torque limit 1: Sequence
input signal (Reference value 20) ” for torque limiting.