21
Service Manual
Plus
MICROSPEED
OK
IN
ST
OC
M D
Adjustments
2.2 L.E.D. indicators
-OK (GREEN) Normally ON.
This
indicator shows that the drive is
operating correctly. If this LED is Off, it
is indicating at least one fault has been
activated. The faults that affect this LED
are:
--Over/Under input voltage.
--Over temperature, Over 104°F (40°C).
--Short Circuit, Outputs shorted to each
other or to ground.--Missing
Tachogenerator or Encoder
- IN (RED) Normally OFF.
This indicator is lit if the drive is in Over current mode.
- ST (RED) Normally OFF.
This indicator is lit when the
drives internal temperature reaches the max.value. Remove
power and wait for the drive to cool before re-applying power.
If operating temperatures are close to the Max operating tem-
perature of the drive, a fan, heat sink or air conditioner may be
needed to remedy the problem.
- OC (RED) Normally OFF.
This indicator is lit if there is a
short circuit between the motor leads and/or ground. Remove
power and examine the motor connecting leads for shorts
before re-powering the drive.
- MD (RED) Normally OFF.
This indicator is lit for a loss of
tachogenerator/Encoder signal, or tachogenerator/Encoder
signal reverse.
FiveLEDs are located just in front of the
potentiometers and show the current sta-
te of the drive.