Chapter 7 - Troubleshooting the Impulse
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Chapter 7 - Troubleshooting the Impulse

This chapter covers common faults , their possible causes and remedies. Also include in this chapter
are Impulse Limits Tables for a variety of operational parameters, e.g. the Acceleration/
Deceleration/Velocity Limits Table.
The Impulse drive detects and resolves fault conditions. Faults are signaled by either a steady red or
flashing red LED on the front pa nel. A solid gr een LED indicates no rmal operation. Mos t faults are
cleared by either 1) cy cling power , 2) sending a RESET command via the serial po rt or configurable
logic input, or 3) probing the motor if the LED is steady red.
Read the CAUTION below before troubleshooting your Impulse.

Troubleshooting Table

This table provides possible remedies to other problems you might have with your application.
Symptom Possible Causes Possible Remedies
Motor moves the wrong dis-
tance Wrong gear ratio. Check distance units.
Motor stalled or slipping. Check motor current anti-resonance
settings.
Control and drive resolutions don’t
match. Check Speed Torque requirements
of move. Decrease acceleration.
Motor stalls (1 LED flash) Acceleration and/or velocity are too
high. Reduce acceleration and/or velocity.
Motor configured incorrectly. Check motor current, inductance,
anti-resonance settings.
Motor moves the wrong direc-
tion The motor phases are mis-wired. Check per manual, or swap A+ with
A-.
The system’s direction is opposite
the configured drive direction. Change the control’s direction pa-
rameter.
The controller does not re-
spond to keypad input. The keypad has been disabled. Check the DIP switch settings on the
back of the keypad.
Incorrect unit address. Change the unit address.

CAUTION!

•Always use caut ion when worki ng with m echanic al syst ems. Gea rs and sc rew-driv en
cylinders are capable of exerting tremendous force against an obstruction.
•Always ensure that power to your system is OFF befo re performing any mainte-
nance activity, or making any connections or adjustments.
•Do not insert objects into the Impulse drive. High voltages could c ause pers onal
injury, and equipment could be damaged beyond repair.
•Do not open the Impulse drive. The factory warranty will be voided if the drive is
opened.