GE DS3800HVDB Input logic module

Ensure that the J6 5-6 jumper is out, or if in, that the enable input opto is driven with at least 3 mA. Disconnect the motor cable and cycle the J2 power supply Off and On. If the meter reads low, check motor cable and motor for shorts across the windings or between the windings and the motor case. Check that the J2 power supply voltage is ³ 24 Volts and £ 75 Vdc. If possible, check with an oscilloscope to verify that this is true on a transient basis.

Motor does not reach expected position 

Check that the step size setting of the drive is the same as the step size setting of the indexer. 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 Mid-Band Instability Compensation (S1 position 4 OFF). Check that the STEP and DIRECTION Inputs satisfy all electrical and timing requirements.

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