User`s manual

25
TROUBLESHOOTING DRIVER FAULTS
If a Fault occurs, reset the Fault by applying a logic “0" to the Reset Fault
Input (terminal 4) for at least 100ms (or by cycling power OFF for at least 15
seconds). After resetting, try to run the motor again. If the driver faults again
then check the conditions listed below.
Is the LED blinking Slowly?
This indicates that the motor has a phase shorted or there is a short in the
motor cable or wiring. Check the motor and the wiring for shorts. If the driver
continues to sense “shorts” after the motor and wiring are determined to be
good, then the output transistors should be checked (see below).
Is the LED blinking Quickly?
This indicates that there is an open connection in one of the motor wires.
Check the motor and the wiring for opens. Another condition that may cause
this type of fault is when a large motor is ramped down too quickly so that it
loses it’s positioning.
Is the LED on Steadily?
This indicates that there is a ground fault - a voltage shorted to 0V. This
detection is useful in detecting a short-to-case in a motor when the motor’s
case AND the driver’s 0V are both connected to earth ground. Excessive
noise on the 0V line may also cause the driver to sense this type of fault.
This type of fault sensing may be disabled by placing jumper JP3 in position
“1-2" (see figure 3A). NOTE: IF THE GROUND FAULT DETECTION IS
DISABLED, DO NOT CONNECT THE DRIVER’S 0V TO EARTH GROUND!
Checking Output Transistors
1. Remove the side plate on the driver side of the unit.
2. Set the multimeter to Diode Test.
3. Place the RED meter lead on Pin 7 (0Vdc) of the driver terminal
block.
4. Touch the BLACK meter lead to each phase (terminals 1, 2, 12, and
13).
5. Readings should be between 0.450V and 0.550V.
6. If any readings are significantly less than 0.450V, then the unit has
been damaged. To send the unit in for repair, contact the factory for
an RMA#.
910 E. Orangefair Lane, Anaheim CA 92801
Phone [phone] Fax [phone]
website: http://www.anaheimautomation.com
e-mail: [e-mail]