Fuji Electric ALPHA7, User Manual

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CHAPTER 2 WIRING
2-64
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 present command position changes to the present feedback position. This is enabled while the
zero speed [NZERO] signal is turned on.
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 the deviation clear to a sequence input terminal, specify the corresponding value ("50")
to the input terminal function setting parameter.
The signal is handled to be always turned off if it is not assigned to the sequence input terminal.
 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.