Carrier 48LC Series Controls, Start-Up, Operation And Troubleshooting page 86

For proper operation, there are three jumper wires that must re-
main installed and the VFD must be set to the auto mode. The
3 jumpers are shown on the unit schematic and are connected
through a plug called PL25. These jumpers set the VFD to start
enabled, run enabled, and tie the common bus together. The
VFD has 4 LEDs on its front panel to indicate operating status.
See below and VFD Troubleshooting section for details on
VFD faults and alarms. The VFD faults can be reset with the
VFD keypad or through the SystemVu™ controls (ALERTS/
FAULT?RESET FAULT/ALERT =Yes).
The Green On LED will indicate the VFD is powered on. The
Green Com. LED will flash as communication is occurring on
the bus. The Yellow Warning LED will indicate when a warn-
ing is present. The Red Alarm LED will indicate when a alarm
condition is present.
SYSTEMVU SYSTEMVU
FAULT ALERT
A607-IDF VFD
—
CURRENT LIMIT
A608-IDF VFD
—
WARNING
A608-IDF VFD
—
WARNING
A608-IDF VFD
—
WARNING
A608-IDF VFD
—
WARNING
A605-IDF VFD
F610-IDF VFD
THERMAL
PWR CARD TEMP
WARNING
F611-IDF VFD A608-IDF VFD
EARTH FAULT WARNING
F611-IDF VFD
—
EARTH FAULT
F612-IDF VFD CTL A608-IDF VFD
WORD LOSS WARNING
F613-IDF VFD A607-IDF VFD
OVER CURRENT CURRENT LIMIT
F614-IDF VFD A605-IDF VFD
MOTOR OVER THERMAL
TEMP WARNING
F615-IDF VFD A608-IDF VFD
OVERLOAD WARNING
A606-IDF VFD
F616-IDF VFD
VOLTAGE
UNDER VOLTAGE
WARNING
A606-IDF VFD
F617-IDF VFD
VOLTAGE
OVER VOLTAGE
WARNING
F618-IDF VFD
—
SHORT CIRCUIT
F619-IDF VFD A608-IDF VFD
MAIN PHASE LOSS WARNING
F620-IDF VFD
—
PHASE U LOSS
F621-IDF VFD
—
PHASE V LOSS
F622-IDF VFD
—
PHASE W LOSS
F623-IDF VFD
CONTROL —
VOLTAGE
F624-IDF VFD
—
SUPPLY VDD
A605-IDF VFD
F601-IDF VFD
THERMAL
UNEXPECTED
WARNING
F601-IDF VFD A608-IDF VFD
UNEXPECTED WARNING
Table 44 — 48/50LC 07-26 VFD Fault Codes
VFD VFD
NUMBER DESCRIPTION
59 Current limit
Heat sink
66
Temperature Low
87 Auto DC Braking
201 Fire Mode
Fire M Limits
202
Exceeded
Pwr Card
69
Temperature
14 Earth fault
44 Earth fault 2
Control word
17
timeout
13 Over Current
Motor ETR over
10
temperature
9 Inverter overloaded
8 DC under voltage
7 DC over voltage
16 Short Circuit
4 Mains phase loss
Motor phase U
30
missing
Motor phase V
31
missing
Motor phase W
32
missing
Control Voltage
47
Fault
48 VDD1 Supply Low
Motor thermistor
11
over temperature
2 Live zero error
Refer to the VFD manufacture literature for details on using
the VFD Keypad for troubleshooting.
48/50LC 07-26 VFD TROUBLESHOOTING
When communication is successful, the SystemVu control will
provide alerts and faults that correlate to the VFD's warnings
and alarms. Table 44 shows the list of the SystemVu controller
faults and alerts and how they map to the VFD warnings and
alarms. Table 44 also lists the possible causes of these cases. A
VFD lockout alarm will require a power cycle to the VFD to
reset. VFD warnings may reduce the actual motor speed with-
out the SystemVu control correcting the speed. This is an ac-
ceptable action to protect the motor, and usually means there
are improper configurations or motor installed.
VFD VFD TRIP
WARNING ALARM LOCK
The current is higher than the value in
X
parameter 4-18 Current Limit.
This warning is based on the temperature
X sensor in the IGBT Module (Only on 400v
30 to 90 kW units).
X The drive is auto DC braking.
X Fire mode has been activated.
Fire Mode has suppressed one or more
X
warranty voiding alarms.
The temperature sensor on the power card is
X X X
either too hot or too cold.
X X X Discharge from output phases to ground.
X X Discharge from output phases to ground.
No communication to variable frequency
X X
drive.
X X X Inverter peak current limit is exceeded.
Motor is too hot due to more than 100% load
X X
for too long. See parameter 1-90.
X X More than 100% load for too long.
Intermediate circuit voltage drops below
X X
"voltage warning low" limit.
X X Intermediate circuit voltage exceeds limit.
X X Short-circuit in motor or on motor terminals.
Missing phase on supply side or too high
X X X voltage imbalance. Check supply voltage.
See parameter 14-12.
X X Motor phase U is missing. Check the phase.
X X Motor phase V is missing. Check the phase.
X X Motor phase W is missing. Check the phase.
X X 24 VDC may be overloaded.
Control voltage low. Please contact your
X X
local Carrier representative.
Thermistor or thermistor connection is
X X
disconnected. See parameter 1-90.
Signal on terminal 53 or 54 is less than 50%
X X of value set in parameter 6-10, 6-12, 6-20, or
6-22.
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CAUSE OF PROBLEM