IAI America SCON-C User Manual
Page 173

155
3.1.9
Command Pulse Input
Pulses up to 200 kpps in the open-collector mode, or up to 500 kpps in the differential line-driver mode, can be
input.
Available command pulses include the 90
phase-difference (phase-A/B x4) signal, pulse train + forward/reverse
signal and forward pulse/reverse pulse, and either the positive logic or negative logic can be selected as the
input pattern for each pulse signal.
Caution:
The directions in which the actuator moves upon receiving forward and reverse pulses conform to
the pulse count direction set in parameter No. 62.
As for the forward/reverse directions, pay attention to the host controller setting or PP•/PP and
NP•/NP connection.
Set the actuator acceleration/deceleration on the host controller side.
The actuator acceleration/deceleration should not exceed the rated acceleration/deceleration of the
applicable actuator. (The rated acceleration/deceleration of each actuator is specified in the
actuator’s catalog.)
* The rotating direction of the motor is defined so that the counterclockwise direction as viewed from
the end of the load shaft represents the forward direction.
Related parameter
Six command pulse patterns can be set in the command-pulse input mode.
Command pulse-train
pattern
Input terminal
Forward
Reverse
Neg
a
ti
ve lo
gic
P
osit
ive lo
gic
Forward pulse train
Reverse pulse train
A forward pulse train indicates motor revolutions in the forward direction, while a reverse pulse train
indicates motor revolutions in the negative direction.
Pulse train
Sign
Command pulses indicate motor revolutions, while a command sign indicates a rotating direction.
Phase-A/B pulse
train
Phase-A/B x4 pulses with a 90
phase difference indicate motor revolutions and a rotating direction.
Forward pulse train
Reverse pulse train
Pulse train
Sign
Phase-A/B pulse
train