73
For proper operation, there are three jumper wires that must
remain in stalled an d th e VF D mu st b e set to the auto m o d e. Th e
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. Th e VFD faults can be reset w ith the VFD
keypad or through the SystemVut controls
(ALERTS/FAULTRESET 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 warning is
present. The Red Alarm LED will indicate when a alarm condition
is present.
Refer to the VFD manufacture literature for details on using the
VFD Keypad for troubleshooting.
LC 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 41 shows the list of the SystemVu controller faults
and alerts and how they map to the VFD warnings and alarms.
Table 41 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 without
the SystemVu control correcting the speed. This is an acceptable
action to protect the motor, and usually means there are improper
configurations or motor installed.
Table 41 – LC --7--26 VFD Fault Codes
SystemVu Faul t SystemVu Alert
VFD
Number
VFD Description
VFD
Warning
VFD
Alarm
Trip
Lock
Cause of Problem
---
A607--- IDF VFD CURRENT
LIMIT
59 Current limit X
The current is higher than the value in par . 4--- 18 Current
Limit.
--- A608--- IDF VFD WARNING 66
Heat sink
Te m p e r a t u r e Lo w
X
This warning is based on the temperat ure sensor in the
IGBT Module (Only on 400 V 30--- 90 kW units).
--- A608--- IDF VFD WARNING 87 Auto DC Braking X The drive is auto DC braking.
--- A608--- IDF VFD WARNING 201 Fire Mode X Fire mode has been activated.
--- A608--- IDF VFD WARNING 202
Fire M Limits
Exceeded
X
Fire Mode has suppressed on or more warranty voiding
alarms.
F610--- IDF VFD
PWR CARD TEMP
A605--- IDF VFD THERMAL
WARNING
69
Pwr Card
Te m p e r a t u r e
X X X
The temperature sensor on the power card is either too
hot or too cold.
F611--- IDF VFD
EARTH FAULT
A608--- IDF VFD WARNING 14 Earth fault X X X Discharge from output phases to ground.
F611--- IDF VFD
EARTH FAULT
--- 44 Earth fault 2 X X Discharge from output phases to ground.
F612--- IDF VFD CTL
WORD L OSS
A608--- IDF VFD WARNING 17
Control word
timeout
X X No communication to variable frequency drive.
F613--- IDF VFD
OVER CURREN T
A607--- IDF VFD CURRENT
LIMIT
13 Over Current X X X Inverter peak current limit is exceeded.
F614--- IDF VFD
MOTOR OVER
TEMP
A605--- IDF VFD THERMAL
WARNING
10
Motor ETR over
temperature
X X
Motor is too hot due to more than 100% load for too
l o n g . S e e p a r a m e t e r 1 --- 9 0 .
F615--- IDF VFD
OVER L OA D
A608--- IDF VFD WARNING 9 Inverter overloaded X X More than 100% load for too long.
F616--- IDF VFD
UNDER VOLT AGE
A606--- IDF VFD VOLTAGE
WARNING
8 DC under voltage X X
Intermediate circuit voltage drops below “voltage
warning low” limit.
F617--- IDF VFD
OVER VOLTAGE
A606--- IDF VFD VOLTAGE
WARNING
7 DC over voltage X X Intermediate circuit voltage exceeds limit.
F618--- IDF VFD
SHORT CIRCUIT
--- 16 Short Circuit X X Short--- circuit in motor or on motor terminals.
F619--- IDF VFD
MAIN PHASE LOSS
A608--- IDF VFD WARNING 4 Mains phase loss X X X
Missing phase on supply side or too high voltage
imbalance. Check supply voltage. See parameter 14--- 12
F620--- IDF VFD
PHASE U LOSS
--- 30
Motor phase U
missing
X X Motor phase U is missing. Check the phase.
F621--- IDF VFD
PHASE V L OSS
--- 31
Motor phase V
missing
X X Motor phase V is missing. Check the phase.
F622--- IDF VFD
PHASE W L OSS
--- 32
Motor phase W
missing
X X Motor phase W is missing. Check the phase.
F623--- IDF VFD
CONTROL
VOL TAGE
--- 47
Control Voltage
Fault
X X 24 V DC may be overloaded.
F624--- IDF VFD
SUPPLY VDD
--- 48 VDD1 Supply Low X X
Control voltage low. Please contact your local Carrier
representative.
F601--- IDF VFD
UNEXPECTED
A605--- IDF VFD THERMAL
WARNING
11
Motor thermistor
over temperature
X X
Thermistor or thermistor connection is disconnected. See
p a r a m e t e r 1 --- 9 0 .
F601--- IDF VFD
UNEXPECTED
A608--- IDF VFD WARNING 2 Live zero error X X
Signal on terminal 53 or 54 is less than 50% of value set
i n p a r 6 --- 1 0 , 6 --- 1 2 , 6 --- 2 0 , o r 6 --- 2 2 .
F601--- IDF VFD
UNEXPECTED
A608--- IDF VFD WARNING 24
Fan Fault (Only on
400V 30--- 90kW)
X X The fan is not working (Only on 400 V 30 to 90 kW units).
F601--- IDF VFD
UNEXPECTED
A608--- IDF VFD WARNING 58 AMA internal fault X X Contact your local Carrier representative.
F601--- IDF VFD
UNEXPECTED
A608--- IDF VFD WARNING 79 Illegal PS config X X Internal fault. Contact your local Carrier representative.
To Next Page
Loading...
