Diagnostic LEDS
MM31640A-series drives have two diagnostic LEDs mounted
on the printed circuit board (see Figure 20).
POWER (PWR)
The green POWER LED lights when AC line voltage is applied
to the drive. It is extinguished when power is removed.
CURRENT LIMIT (CL)
The red CURRENT LIMIT LED lights when the drive’s DC
current output to the motor exceeds the limit set by the
TORQUE trimpot. If this occurs, one or more of the following
conditions may exist:
1. The TORQUE trimpot setting may be too low for the
motor and load. Adjust the TORQUE setting as described
starting on page 23. Under no circumstances may the
TORQUE setting exceed 120% of maximum motor
current.
2. The load is too great for the motor and/or drive. You may
need to reduce the load, or install a motor or drive which
has a greater current rating than the one currently in use.
3. The motor or related mechanical linkages may be jammed.
Remove AC line voltage and carefully inspect the motor
and load for incorrect alignment.
34
Troubleshooting
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Содержание MM30000 Series
Страница 1: ...SCR Adjustable Speed Drives for DC Brush Motors User s Manual MM30000 Series Model MM31640A...
Страница 8: ...2 Figure 1 Dimensions Dimensions...
Страница 24: ...18 Operation Figure 9 Dynamic Brake Connection...
Страница 26: ...20 Calibration Figure 10 Calibration Trimpot Layout MINIMUM SPEED REGULATION IR COMP MAXIMUM SPEED TORQUE LIMIT...
Страница 41: ...35 Figure 20 Diagnostic LED Locations POWER LED CURRENT LIMIT LED...
Страница 46: ...Notes...