PowerTec 2000C Instruction Manual page 57

HS1, HS2, HS3 (red)
These LED's indicate the operation of the LED
switches as the motor turns. If one or more of these
LED's is not working:
1. See Section 6.4 on page 31.
2. Check the hall sensors as in CURRENT LIMIT section
under Speed Controller Board below.
SPEED CONTROLLER LED's
RUN (green)
This LED indicates that the control is being given
a RUN command. If this LED is not on:
1. Check for +24VDC at TB2 terminal 8, 7, and 4 (TB2
terminal 12 is common).
2. Change the Speed Controller Board.
3. Change the Current Controller Board.
CURRENT LIMIT (red)
This LED indicates the UP/DOWN counter is satu-
rated. If this LED is on:
1. Make sure that the motor is physically capable of
turning.
2. Check the current going to the motor (when the motor
is stalled, this will require a DC amp probe).
3. Check the hall effect feedback terminals on TB1 while
turning the motor by hand (the control power must be on,
but the ESTOP circuit should be open).
TB1 terminal 1 is common
TB1 terminals 2, 3, and 4 switch between 0VDC
and 8.8VDC
TB1 terminals 5 and 6 will switch between 0 and
8.8VDC, but at a much faster rate
TB1 terminal 7 is also common
TB1 terminal 8 is +5VDC
ZERO SPEED (yellow)
This LED indicates that the motor is turning faster
than 10 RPM. If this LED is not on:
1. Check to make sure the motor is turning.
2. Check the hall sensor input lights HS1, HS2, and HS3
on the Current Controller Board.
3. Change the Speed Controller Board.
4. Change the Current Controller Board.
THERMAL (yellow)
This LED indicates that the heatsink thermal is closed
(not overheated). If this LED is not on:
1. Check for -24VDC at TB3 terminal 9 (TB3 terminal 10
is common). CR1 should be energized.
2. Check for -24VDC at TB3 terminal 6. If missing, and
step 1 is correct, thermal is open or wire is broken.
3. Check the wires for loose or broken connections.
4. Change the Current Sensor Board.
5. Change the heatsink thermal switch.
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UNDERVOLTAGE (red)
This LED indicates that an undervoltage condition of less
than 80% bus level has occurred (this is a latching indication
which is reset by the start/stop circuits). If this LED is on:
1. Check the bus voltage across the entire bus and across
each half of the bus (on 380VDC and 460VAC controls). CR1
should be energized. If the voltage is correct, press the stop
button and restart the control. If the comes on again, or if it
remains on, proceed to next step.
2. Check the voltage at the Current Sensor Board from A to
B (should be 0VDC if CR1 is in). [See Figure 29 on page 6-3 for
locations of points A, B, and C]
3. Check the voltage from A to C on the Current Sensor Board
(it should be the bus level).
4. Change the Current Sensor Board.
UNDERVOLTAGE TIME OUT (red)
This LED indicates that power was lost at the input for at
least 80 milliseconds, and/or an undervoltage condition of less
than 80% bus level has occurred (this is a latching indication
which is reset by the start/stop circuits). If this LED is on:
1. Check the bus voltage across the entire bus and across
each half of the bus (on 380VDC and 460VAC controls). CR1
should be energized. If the voltage is correct, press the stop
button and restart the control. If the comes on again, or if it
remains on, proceed to next step.
2. Check the voltage at the Current Sensor Board from A to
B (should be 0VDC if CR1 is in). [See figure 29 on page 30 for
locations of points A, B, and C]
3. Check the voltage from A to C on the Current Sensor Board
(it should be the bus level).
4. Change the Current Sensor Board.
5. Change the Current Controller Board.
OVERVOLTAGE (red)
This LED indicates that an overvoltage condition of more
than 115% bus level has occurred (this is a latching indication
which is reset by the start/stop circuits). If this LED is on:
1. Check the bus voltage across the entire bus and across
each half of the bus (on 380VDC and 460VAC controls). CR1
should be energized. If the voltage is correct, press the stop
button and restart the control. If the comes on again, or if it
remains on, proceed to next step.
2. Check the voltage at the Current Sensor Board from A to
B (should be 0VDC if CR1 is in). [See Figure 29 on page 6-3 for
locations of points A, B, and C]
3. Check the voltage from A to C on the Current Sensor Board
(it should be the bus level).
4. Change the Current Sensor Board.
HOT (red)
This LED is the latched version of THERMAL.
Model 2000C / 3000C Manual