Danfoss vlt AQUA Instruction Manual page 155

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VLT AQUA Drive
Instruction Manual
Warning: There is a risk of substantial power being
transmitted to the brake resistor if the brake transistor
is short-circuited.
ALARM/WARNING 28, Brake check failed:
Brake resistor fault: the brake resistor is not connected/working.
WARNING/ALARM 29, Drive overtemperature:
If the enclosure is IP00, IP20/Nema1 or IP21/TYPE 1, the cut-out tem-
perature of the heatsink is 203 o F +10
fault cannot be reset until the temperature of the heatsink is below 158°F
[70 o C].
The fault could be a result of:
- Ambient temperature too high
- Motor cable too long
ALARM 30, Motor phase U missing:
Motor phase U between the adjustable frequency drive and the motor is
missing.
Turn off the adjustable frequency drive and check motor phase U.
ALARM 31, Motor phase V missing:
Motor phase V between the adjustable frequency drive and the motor is
missing.
Turn off the adjustable frequency drive and check motor phase V.
ALARM 32, Motor phase W missing:
Motor phase W between the adjustable frequency drive and the motor is
missing.
Turn off the adjustable frequency drive and check motor phase W.
ALARM 33, Soft-charge fault:
Too many power-ups have occurred within a short time period. See the
chapter General Specifications for the allowed number of power-ups
within one minute.
WARNING/ALARM 34, Serial communication fault:
The serial communication bus on the communication option card is not
working.
WARNING/ALARM 36, Line failure:
This warning/alarm is only active if the supply voltage to the adjustable
frequency drive is lost and parameter 14-10 is NOT set to OFF. Possible
correction: check the fuses to the adjustable frequency drive
WARNING/ALARM 37, Phase Imbalance:
There is a current imbalance between the power units.
ALARM 38, Internal fault:
Contact your local Danfoss supplier.
ALARM 39, Heatsink Sensor:
No feedback from the heatsink sensor.
WARNING 40, Overload of Digital Output Terminal 27
Check the load connected to terminal 27 or remove short-circuit connec-
tion. Check parameters 5-00 and 5-01.
o F [95 o C +5 o C]. The temperature
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MG.20.M5.22 - VLT is a registered Danfoss trademark
WARNING 41, Overload of Digital Output Terminal 29:
Check the load connected to terminal 29 or remove short-circuit connec-
tion. Check parameters 5-00 and 5-02.
WARNING 42, Overload of Digital Output On X30/6:
Check the load connected to X30/6 or remove short-circuit connection.
Check parameter 5-32.
WARNING 42, Overload of Digital Output On X30/7:
Check the load connected to X30/7 or remove short-circuit connection.
Check parameter 5-33.
ALARM 46, Pwr. card supply:
The supply on the power card is out of range.
WARNING 47, 24 V supply low:
The external 24 V DC backup power supply may be overloaded, otherwise
contact your Danfoss supplier.
ALARM 48, 1.8 V supply low:
Contact your Danfoss supplier.
WARNING 49, Speed limit:
The speed has been limited by range in par.4-11
[RPM] Motor Speed High Limit [RPM]
and par.4-13
ALARM 50, AMA calibration failed:
Contact your Danfoss supplier.
ALARM 51, AMA check Unom and Inom:
The setting of motor voltage, motor current and motor power is presum-
ably wrong. Check the settings.
ALARM 52, AMA low Inom:
The motor current is too low. Check the settings.
ALARM 53, AMA motor too big:
The motor is too big for the AMA to be carried out.
ALARM 54, AMA motor too small:
The motor is too small for the AMA to be carried out.
ALARM 55, AMA par. out of range:
The par. values found from the motor are outside the acceptable range.
ALARM 56, AMA interrupted by user:
The AMA has been interrupted by the user.
ALARM 57, AMA timeout:
Try to start the AMA again a number of times until it is carried out. Please
note that repeated runs may heat the motor to a level where the resis-
tances Rs and Rr are increased. In most cases, however, this is not
critical.
WARNING/ALARM 58, AMA internal fault:
Contact your Danfoss supplier.
WARNING 59, Current limit:
The current is higher than the value in par. 4-18
WARNING 60, External Interlock:
External Interlock has been activated. To resume normal operation, apply
24 VDC to the terminal programmed for External Interlock and reset the
adjustable frequency drive (via Bus, Digital I/O or by pressing [Reset]).
WARNING/ALARM 61, Tracking Error:
Tracking error. Contact your supplier.
9 Troubleshooting
Motor Speed Low Limit
.
9
Current Limit .
9-5