X5 AC Drive User’s Manual
Chapter 8: Troubleshooting
DPD00089A
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127 -
© 2009 Vacon Incorporated All Rights Reserved
15
Dyn Brake
Dynamic brake
overload
0
• The DB circuit is active on
power-up
(not auto-resettable)
Check for failed braking
transistor. Consult factory.
1
• The DB circuit is being
activated for too long, possibly
causing the resistor to overheat
or fail.
Reduce braking cycle or increase
capacity. Activate current limit;
consult factory.
2
• The DB circuit is overloaded
because of too large a
regenerative load.
Reduce braking cycle or increase
capacity. Activate current limit;
consult factory.
3,4,5
• The DB circuit is faulty on
power-up
(not auto-resettable).
18
OverCurrent
Overcurrent
condition
0
• The drive sensed an
overcurrent condition on power-
up
(not auto-resettable)
.
Check for failed output power
device or shorted motor.
1
• The drive sensed an
overcurrent condition during
operation. The current has
exceeded the safe operation
point of power devices.
Reduce load on motor. Verify that
Motor FLA is programmed
correctly. Check for mechanical
binding and shock loading.
19
Over Temp
Over- temperature
condition
0
• The temperature of the heatsink
exceeded a temperature limit.
Check that ambient temperature
does not exceed drive’s rating.
Check for fan operation
(assuming drive has fans
installed).
1
• The temperature of the control
board exceeded a temperature
limit.
Check that ambient temperature
does not exceed drive’s rating.
Check for fan operation
(assuming drive has fans
installed).
2
• The drive sensed the heatsink
thermistor sensor is faulty or not
connected properly.
Check thermistor connections or
replace. Consult factory.
3
• The drive sensed the control
board thermistor sensor is
faulty or not connected
properly.
Check thermistor connections or
replace. Consult factory.
20
Motor TOL
Motor timed
overload trip
0
The drive detected an overload
that exceeds the customer’s
defined overload setting.
Check load current demand.
Verify Motor FLA is programmed
to the correct value. Verify TOL
characteristic is correct for the
application.
21
Low Temp
Low temperature
0
This fault occurs if the
temperature of the heatsink falls
below -10.0 degrees C.
Verify that ambient temperature is
within the drive’s specifications;
increase the ambient temperature
if necessary.
22
Ref Loss
Speed reference
loss
0
The drive detected the analog
input was configured to fault if the
input current went below the level
specified by customer
parameters.
Check physical connections for
reference signal. Check that
programming for 4-20 mA signal
is correct. Verify that signal to the
drive is correct.
Table 8-1: X5 Fault Codes
(Page 3 of 6)
Code
Fault Display
Description
Adv. Fault
Code
Explanation
Suggestions for Recovery
Note:
Shaded faults are auto-resettable, except where noted.