IAI America SCON-C User Manual

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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

ve lo

gic

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.