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18
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PROBLEM
CHECK POINT
IF “YES,” THEN …
Motor does not run
Is main power lamp
illuminated?
• Check that power source
is switched on.
• Reconfirm the power
voltage level.
Is the red “LMT”
LED illuminated?
• Check that TORQ trim
pot is not set too low.
• Check that motor is
not overloaded.
Is the main speed
pot damaged?
• Examine the speed
pot and correct it.
Motor runs, but in
wrong direction
Is wiring to the
motor correct?
• Switch the two motor wires.
Motor runs, but speed
can’t be adjusted
Is the main speed
pot damaged?
• Examine the speed
pot and correct it.
Is the red “LMT”
LED damaged?
• Check that TORQ trim
pot is not set too low.
• Check that motor is
not overlooked.
Motor runs, but speed
is too high or too low
Is the motor specification
correct?
• Reconfirm motor
specification.
Is the gear ratio correct?
• Reconfirm gear ratio.
Is the MAX trim pot
setting correct?
• Check MAX trim pot settings.
Is DIP switch 8 set for
proper output voltage?
• Set DIP switch 8 properly.
Motor runs but with
abnormal speed variation
Is the loading variation
too large?
• Reduce loading variation.
Are DIP switches set
properly to match
the motor?
• Set DIP switches properly.
Is REG trim pot set properly? • Adjust REG trim pot.
Table 4 - General problem evaluation method
Figure 16 – Location of LED Status Indicators inside the enclosure