HP 2995 - Manual (Page 17)

17
TROUBLESHOOTING
WARNING
Do not remove the cover of the inverter when the power
is ON to avoid injury caused by electrical shock.
This control does not require maintenance under normal conditions. If you
encounter a problem, read all instructions provided with this control and double-
check the wiring. If problems persist, contact your source of purchase or a
Bodine Authorized Service Center and describe the problem in detail.
Performing unauthorized repairs will void the Warranty.
GENERAL EVALUATION – Knowing the circumstances under which the problem
occurred can help to identify the root cause of the problem.
Has the system ever operated properly?
If the control was just installed and
doesn’t work right, then it is likely that something wasn’t done correctly in the
installation. However, if the system has been working for an extended period of
time and just recently stopped working, then this would indicate that the control
was initially installed properly but something has somehow changed.
Is the problem continuous or intermittent?
If the problem always occurs and
never goes away, then it would indicate something inherently wrong in the
connections or a defective component. On the other hand, if the system
operates properly most of the time and only occasionally does something wrong,
then this might indicate loose connections or electrical noise interference.
Table 4 - General problem evaluation method
ABNORMALITY CHECK POINT COUNTERMEASURE
Is main power lamp illuminated? Check that power source is switched on.
Reconfirm the power voltage level.
Is a problem indicated by the LED
status indicator?
See Table 5 for interpretation.
Motor does not run
Is there a direction command? Check that the direction switch is set at
either Forward or Reverse.
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? Swap any two of the three motor wires.
Change direction jumper (Model 2997)
Change direction switch (Model 2996)
Is the main speed pot damaged? Examine the speed pot and correct it. Motor runs, but speed
can’t be adjusted Is the loading too heavy? Reduce loading
Is motor specification correct? Reconfirm motor specification.
Is the gear ratio correct? Reconfirm gear ratio
Motor runs, but
speed is too high
or too low Is the MAX trim pot setting correct? Check MAX trim pot setting.
Is the loading too heavy? Increase inverter and motor capacity
Is the loading variation too large? Reduce loading variation
Motor runs, but with
abnormal speed
variations Is input power steady and stable? Install AC reactor on power supply input.