Specifications

TROUBLESHOOTING
ADVANCED MICRO CONTROLS INC.
C
54
Troubleshooting Tables
The following tables list problem symptoms and possible solutions. The tables break the problem symptoms
into categories to make it easier to search for your specific problem. Cross-references into the manual are
sometimes given that leads to additional information.
Indicator LED’s
Table C.1 Indicator LED Problem Table
Symptom Solution
The
OVERTEMP
LED is blinking
but the system seems to be working
fine.
A Velocity Step Violation has occurred. The frequency of the direc-
tional pulses from the indexer exceeded 2 MHz. This fault may be
caused by noise on one or both of the directional inputs. The
OVER-
TEMP
LED will continue to blink until the drive is reset or power is
cycled. See Detectable Faults and Errors on page 14 for more infor-
mation.
The
MOTOR FAULT
LED is blink-
ing but the system seems to be
working fine.
A Window Step Violation has occurred. The indexer sent pulses to the
SD17063 while the Disable Input was active or before the 275 millisec-
ond current ‘ramp-up’ period expired after The Disable Input was
released. The
MOTOR FAULT
LED will continue to blink until the drive
is reset or power is cycled. See Detectable Faults and Errors on page
14 for more information.
All LED’s are off and the Fault Out-
put is active. Power is applied to
the drive.
The AC line voltage may be too low. It must be greater than 85Vac for
the SD17063 to operate.
The
POWER
LED is the only LED
on, but the Fault Output is active
and the motor is not powered.
The ±Disable or ±Reset input may be active. If either of these inputs are
receiving power, the Fault output is active and motor current is disabled.
The
OVERTEMP
LED is on.
The SD17063 has overheated. The drive turns off motor current when
the heatsink temperature passes 95°C (200°F). Remove power from the
SD17063 and allow it to cool. If this problem occurs frequently, you
may need to install a small cooling fan below the drive to force air up
through it.
The
MOTOR FAULT
LED is on.
1) The jumper across the
INTERLINK
pins of the Motor Connector is
missing.
2) There is a short between the motor’s phases or one of the phases and
ground. Remove the Motor Connector from the SD17063 and use a
ohmmeter to check for shorts between A phase and B phase. Verify
that the motor cable shield is connected to the motor frame and then
check for shorts from A and B phases to shields.
The
POWER
LED is blinking.
An Output Bus Overvoltage fault has occurred. Voltage on the motor
pins has exceeded 250Vdc. Cycle power to the drive or pulse the Reset
input to clear the fault.
When the motor is stopped quickly, it produces an inductive voltage
spike that is usually handled by the SD17063’s internal regeneration
resistor. This fault occurs when the power is to great for the resistor to
dissipate. You should increase your deceleration time to limit the power
generated by the motor.
If this fault occurs repeatedly, the regeneration resistor may be damaged
and the SD17063 may need to be returned for repair.