Danfoss VLT AutomationDrive FC 300 Instruction Manual

WARNING 5, DC link voltage high:
The intermediate circuit voltage (DC) is higher than the overvoltage limit
of the control system. The adjustable frequency drive is still active.
WARNING 6, DC link voltage low
The intermediate circuit voltage (DC) is below the undervoltage limit of
the control system. The adjustable frequency drive is still active.
WARNING/ALARM 7, DC overvoltage:
If the intermediate circuit voltage exceeds the limit, the adjustable fre-
quency drive trips after a time.
Possible corrections:
Connect a brake resistor
Extend the ramp time
Activate functions in par. 2-10
Brake Function
Increase par. 14-26 Trip Delay at Inverter Fault
Alarm/warning limits:
3 x 200–240 V 3 x 380–500 V 3 x 525–600 V
[VDC] [VDC] [VDC]
Undervoltage 185 373 532
Voltage warning
low
205 410 585
Voltage warning
high (w/o brake
- w/brake)
390/405 810/840 943/965
Overvoltage 410 855 975
The voltages stated are the intermediate circuit voltage of the ad-
justable frequency drive with a tolerance of ± 5%. The correspond-
ing AC line voltage is the intermediate circuit voltage (DC link) divi-
ded by 1.35.
WARNING/ALARM 8, DC undervoltage:
If the intermediate circuit voltage (DC) drops below the “voltage warning
low” limit (see table above), the adjustable frequency drive checks if 24
V backup supply is connected.
If no 24 V backup supply is connected, the adjustable frequency drive
trips after a given time depending on the unit.
To check whether the supply voltage matches the adjustable frequency
drive, see
General Specifications .
WARNING/ALARM 9, Inverter overloaded:
The adjustable frequency drive is about to cut out because of an overload
(current too high for too long). The counter for electronic, thermal inver-
ter protection gives a warning at 98% and trips at 100%, while giving an
alarm. You
cannot reset the adjustable frequency drive until the counter
is below 90%.
The fault is that the adjustable frequency drive has been overloaded by
more than 100% for too long.
WARNING/ALARM 10, Motor ETR overtemperature:
According to the electronic thermal protection (ETR), the motor is too hot.
You can choose if you want the adjustable frequency drive to give a
warning or an alarm when the counter reaches 100% in par. 1-90
Motor
Thermal Protection
. The fault is that the motor is overloaded by more
than 100% for too long. Make sure that the motor par. 1-24
Motor Cur-
rent
is set correctly.
WARNING/ALARM 11, Motor thermistor overtemp:
The thermistor or the thermistor connection is disconnected. You can
choose if you want the adjustable frequency drive to give a warning or
an alarm when the counter reaches 100% in par. 1-90
Motor Thermal
Protection
. Make sure that the thermistor is connected correctly between
terminal 53 or 54 (analog voltage input) and terminal 50 (+10 V supply),
or between terminal 18 or 19 (digital input PNP only) and terminal 50. If
aKTY sensoris used, check for correct connection between terminal 54
and 55.
WARNING/ALARM 12, Torque limit:
The torque is higher than the value in par. 4-16
Torque Limit Motor
Mode
(in motor operation) or the torque is higher than the value in
par. 4-17
Torque Limit Generator Mode (in regenerative operation).
WARNING/ALARM 13, Overcurrent:
The inverter peak current limit (approx. 200% of the rated current) is
exceeded. The warning will last approx. 8-12 sec., then the adjustable
frequency drive trips and issues an alarm. Turn off the adjustable fre-
quency drive and check if the motor shaft can be turned and if the motor
size matches the adjustable frequency drive.
If extended mechanical brake control is selected, trip can be reset exter-
nally.
ALARM 14, Ground fault:
There is a discharge from the output phases to ground, either in the cable
between the adjustable frequency drive and the motor or in the motor
itself.
Turn off the adjustable frequency drive and remove the ground fault.
ALARM 15, Incomplete hardware:
A fitted option is not handled by the present control board (hardware or
software).
ALARM 16, Short Circuit
There is short-circuiting in the motor or on the motor terminals.
Turn off the adjustable frequency drive and remove the short-circuit.
WARNING/ALARM 17, Control word timeout:
There is no communication to the adjustable frequency drive.
The warning will only be active when par. 8-04
Control Word Timeout
Function
is NOT set to OFF.
If par. 8-04
Control Word Timeout Function is set to Stop and Trip , a
warning appears and the adjustable frequency drive ramps down until it
trips, while giving an alarm.
Par. 8-03
Control Word Timeout Time could possibly be increased.
WARNING/ALARM 22, Hst. mech brake:
Report value will show what kind it is. 0 = The torque ref. was not reached
before timeout. 1 = There was no brake feedback before timeout.
WARNING 23, Internal fan fault:
The fan warning function is an extra protection function that checks if the
fan is running / mounted. The fan warning can be disabled in
par. 14-53
Fan Monitor (set to [0] Disabled).
WARNING 24, External fan fault:
The fan warning function is an extra protection function that checks if the
fan is running / mounted. The fan warning can be disabled in
par. 14-53
Fan Monitor (set to [0] Disabled).
VLT
®
AutomationDrive FC 300 Instruction
Manual
6 Troubleshooting
MG.33.AG.22 - VLT
®
is a registered Danfoss trademark 6-5
6

Danfoss VLT AutomationDrive FC 300 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 300
Category	DC Drives
Language	English