Anaheim Bilevel Step Motor Driver BLD72 - Manual (Page 11)

11
Troubleshooting
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? (Once a second)
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 accurate, then the output transistors should be checked (see below).
Is the LED blinking quickly? (Three times a second)
This indicates that there is an open or intermittent 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”. 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
2. Set the multimeter to Diode Test
3. Place the RED meter lead on (between) the Sense Resistors (labeled as “R”s in Figure 4)
4. Touch the black meter lead to each phase (terminals 1, 2, 12, and 13)
5. Reading should be between 0.450V and 0.550V
6. If any readings are significantly less than 0.450V, then the unit has been damaged.
If a factory repair is required, contact Anaheim Automations for an RMA#.
(800) 345-9401 or (714) 992-6990
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permission of Anaheim Automation, 910 E. Orangefair Lane, Anaheim, CA 92801.
DISCLAIMER
Though every effort has been made to supply complete and accurate information in this manual, the contents are subject to change without notice or obligation to
inform the buyer. In no event will Anaheim Automation be liable for direct, indirect, special, incidental, or consequential damages arising out of the use
or inability to use the product or documentation.
Anaheim Automation’s general policy does not recommend the use of its’ products in life support applications wherein a failure or malfunction of the product may
directly threaten life or injury. Per Anaheim Automation’s Terms and Conditions, the user of Anaheim Automation products in life support applications assumes all
risks of such use and indemnifies Anaheim Automation against all damages.
LIMITED WARRANTY
All Anaheim Automation products are warranted against defects in workmanship, materials and construction, when used under Normal Operating Conditions and
when used in accordance with specifications. This warranty shall be in effect for a period of twelve months from the date of purchase or eighteen months from the
date of manufacture, whichever comes first. Warranty provisions may be voided if products are subjected to physical modifications, damage, abuse, or
misuse.
Anaheim Automation will repair or replace at its’ option, any product which has been found to be defective and is within the warranty period, provided that the item
is shipped freight prepaid, with previous authorization (RMA#) to Anaheim Automation’s plant in Anaheim, California.
TECHNICAL SUPPORT
If you should require technical support or if you have problems using any of the equipment covered by this manual, please read the manual completely to see if it
will answer the questions you have. Be sure to refer to the TROUBLESHOOTING section of this manual. If you need assistance beyond what this manual can
provide, contact your Local Distributor where you purchased the unit, or contact the factory direct.