Signal Description (Priority Among Input Signals) - Fuji Electric Alpha7 VV User Manual

CHAPTER 3 OPERATION

3.1 Signal Description (Priority among Input Signals)

Input signals of the servo amplifier for stopping the motor shaft are received first in view of safety.
01 Operation signal always given highest priority
3
02 Operation signal always given priority
03 Operation signal always given priority
04 Signal for controlling the torque
05 Signal for stopping the motor
06 Signal for rotating the motor
07 Signal for determining the home position
08 Signal irrelevant to motor operation
 When the STO function is triggered, the motor free runs to a stop.
If the PA2_61: Action sequence at servo-on OFF setting value is other than free run, the dynamic
brake is applied to stop the motor. If there are concerns over falling if using motors for lifting
equipment, employ such means as a mechanical brake to ensure that safety is maintained.
 The moving part of the mechanical system of the elevator may drop if a free-run command is used.
Do not assign the command unless necessary.
 If +OT (7) is detected during rotation caused by the FWD (2) signal, priority is given to the +OT (7)
signal.
Even if the +OT (7) signal is detected, priority is given to the torque limit (30) signals.
Priority is given to forced stop (10) during operation with a torque command (30) signals. However, if
the free-run command (34) signal is issued, the servo amplifier output is stopped.
The response time of the sequence input terminal and output terminal is about 1 [ms].
If the zero deviation signal setting or similar is too small, the host PLC may fail to recognize.
(The scanning cycle of a general PLC is several tens of milliseconds [ms].)
3-2
Signal Description (Priority among Input Signals)
Description Applicable function (Function No.)
 STO (EN terminal input)
 Free-run command (54)
 Servo-on (1)
 Forced stop (10)
 External regenerative resistor overheat (34)
 Torque limit 0 (19)
 Torque limit 1 (20)
 +OT (7)
 -OT (8)
 Pause (31) (LS type only)
 Positioning cancel (32)
 Deviation clear (50)
 FWD (2)
 REV (3)
 Start positioning (4) (LS type only)
 Homing (5)
 Home position LS (6)
 +OT (7)
 -OT (8)
 Interrupt input (49)
 Position preset (16)
 Alarm reset (11)
 Edit permission (55) (LS type only)