Operation By Position Command Using Pulse Train - Mitsubishi Electric FR-A7AL Instruction Manual

The pulse train is rough during acceleration and fine at the maximum speed. During deceleration the pulse
train is rough and at last there are no pulses. The motor stops shortly after the command pulses stop. This
time lag is necessary for maintaining the stop accuracy and called stop settling time.
REMARKS
For the servo on signal (LX), set "23" in Pr. 178 to Pr. 189 (input terminal function selection) to assign the function.
For the in-position signal (Y36), set "36" in Pr. 190 to Pr. 196 (output terminal function selection) to assign the function.
6.4.1

Operation by position command using pulse train

Turning ON (short the terminal LX-SD) the servo on signal cancels the base circuit shut-off and operation
ready signal is output after 0.1s has passed. (Assign the servo on (LX) signal using input function selection
(Pr. 178 to Pr. 189).) When the terminal STF (forward stroke end signal) or terminal STR (reverse stroke end
signal) and terminal SD are shorted, the motor runs in accordance with the command pulse. When the
forward (reverse) stroke end signal opens, the motor does not run in that direction.
Forward stroke end (STF)
Reverse stroke end (STR)
Operation ready completion (RDY)
Forward rotation pulse train (PGP/PP)
Reverse rotation pulse train (PGN/NP)
Forward rotation
Actual rotation
Reverse rotation
Base signal
Servo on (LX)
0.1s
In-position (Y36)
POSITION CONTROL FUNCTION
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