SmarTraq
32 Manual # 42-02-D008 Rev. A2
IF… During opening, doors reach full open, push up against bumper, and stop with red
LED (DL2-R) on, a fault condition occurred (most likely due to low AC input voltage):
1. Check AC voltage using a voltmeter. Check voltage continuously during opening, espe-
cially when doors push up against full open bumper. Voltage should not drop by more
than 5% of nominal value (120/208/240VAC).
If voltage drop is excessive, and drive locks up, cycling power is required.
2. Excessive voltage drop may be due to a poor connection between source and drive.
Wires may be undersized. Transformer in controller may be underrated.
3. As an experiment, temporarily use an alternate power source such as car lighting supply
or a building convenience outlet circuit and repeat learn process. If problem is resolved
in this manner, a more robust power source from controller is required.
IF… During closing, doors reach full close, push up against bumper, and stop with red LED
(DL2-R) ON, follow steps for the problem above.
IF… During closing, doors stop before reaching full close and DCL is generated, “C3” value
may be too small or there is too much friction:
1. Ensure doors move freely without excessive friction.
2. If doors move freely, increase “C3” and repeat learn process.
IF… During closing, doors reach full close and push up against bumper but DCL is not gen-
erated, there is probably slippage somewhere in the mechanical transmission system and the
motor is still turning while doors are stopped:
1. If possible, try to stop motor by hand (only a small amount of pressure is usually
required). The drive should now generate DCL. If not, turn off power.
2. Check mechanical linkage and transmission system. Tighten belts.
3. Repeat start up procedure. If problem persists, cycle power and repeat procedure
through first closing of doors. After this, reduce value of “C3” and execute learn process.
4. Repeat this step until correct value for “C3” is found.
Multiple parameters affect closing torque. Please refer to “Inverter Drive Parameters” on
page 20.
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