Fuji Electric ALPHA5 Smart, User Manual

Page: 100 / 636

CHAPTER 2 WIRING
2-52
Description of I/O Signals
2
Deviation clear: Sequence input signal (Reference value 50)
The difference (deviation) between the command position and feedback position is zeroed.

Function
The difference (deviation) between the command position and the feedback position is zeroed
while the deviation clear signal remains turned on.
The command position changes to the feedback position.
Use PA3_36 (deviation clear input form) to select either the edge or level signal.
If the edge is selected, deviation is reset at the rising edge.
The activation time must be 2 ms or over.
 Parameter setting
To assign deviation clear to a sequence input terminal, specify the corresponding value ("50") to
the input terminal function setting parameter.
 Relevant description
All rotation commands are ignored while the deviation clear signal is turned on.
If the deviation clear signal is turned on during servomotor rotation, the manual forward rotation
[FWD] signal and so on are ignored. The feedback position does not change even if deviation clear
is executed.
You can zero the accumulated deviation due to the mechanical stop or similar, thereby avoiding
the travel by the deviation amount that may appear when the load is released.
After deviation clear is executed, the zero deviation sequence output signal is turned on.
Multi-step speed selection [X1]: Sequence input signal (Reference value 51)
Multi-step speed selection [X2]: Sequence input signal (Reference value 52)
Multi-step speed selection [X3]: Sequence input signal (Reference value 53)
The manual feed speed is specified for the position or speed control mode.
These values are used to select the speed limit in the torque control mode.
 Function
The rotation speed while the forward command [FWD] (reverse command [REV]) signal is turned
on is selected.
(1) Under speed and position control
The motor turns at the speed selected with multi-step speed [X1], [X2] and [X3].
The setting speed is shown in the table below.
X3 X2 X1
Parameter
No.
Rotation speed for enabling
OFF OFF OFF - Speed command voltage (VREF)
OFF OFF ON PA1_41 Manual feed speed 1
OFF ON OFF PA1_42 Manual feed speed 2
OFF ON ON PA1_43 Manual feed speed 3