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Table (cont'd)
SYMPTOM
CORRECTIVE ACTION
Motor rotates in
Check polarity of the DIRECTION input. Also, verify that the
the wrong
direction selection jumpers (E6, E7, E8) are set correctly.
direction.
Reverse the A and A motor phases.
Motor does not
Check that the step size setting of the drive and speed
reach expected
potentiometer are set correctly.
position.
Verify that the motor does not stall. If it does:
1. Re-check sizing calculations. Be sure that the power
supply voltage is high enough for the required
torque vs. speed curve.
2. Use a finer step size to avoid low-speed resonance
problems.
3. Enable Digital Electronic Damping
(S1 position 4 OFF).
Enabled LED not
1. Turn the bus power off.
lit - drive is
2. Disconnect the motor winding from the drive.
disabled.
3. Turn the bus power back to on. If the Enabled LED is still
not lit, check that the +8V reference output (+8V_REF_OUT)
is within specifications.
4. Remove any external connections to the enable input opto
(ENABLE) and check to see that the enable sense jumper
(J6 5-6) is removed (factory default).
5. Reapply the power. If ENABLED LED is still not lit, drive
has an internal short.
6415 Installation and Hardware Reference Manual - Rev E
4 - 3
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