8
Diagnostic Indicators
LED
INDICATION
MARK (RED)
This is an output that comes ON at the resolver zero
position and can be used in conjunction with alignment
procedures. The zero position is about .5 degrees.
CURRENT(BI-COLOR)
This is a bi-colored LED that produces either red or
green as a function of load. The intensity increases with
load. Red indicates positive torque and green indicates
negative torque.
There are eight faults that will reduce amplifier current to zero.
LED
INDICATION
STALL
If an excess current or speed variation is sensed, this
fault occurs.
STATOR SHORTS
If shorts in the stator wiring occur, this comes ON.
AMPLIFIER THERMAL An 85°C thermostat is mounted to the amplifiers IGBT
heat sink and shunt load. If an excess temperature is
sensed, this fault occurs.
FEEDBACK WIRING
For most resolver wiring errors, defective resolvers or
tracking rate errors caused by the resolver, this fault
occurs.
MOTOR THERMAL
If an excess thermal condition exists in the motor, this
fault occurs.
HI-BUS
If excess DC voltage or a failure of the shunt circuit
occurs, this fault occurs.
RESET
During the first second of power up or if the reset input
is active, this LED will be ON.
SLOW
This LED is ON if the motor is running slow or has
stopped.
LED
INDICATION
POWER(GREEN)
If logic +5 Vdc is ON then this LED is ON.
