Danfoss VLT HVAC Drive FC 102 Instruction Manual page 133

Warnings and Alarms
WARNING 41, Overload of digital output terminal 29
Check the load connected to terminal 29 or remove the
short-circuit connection. Check parameter 5-00 Digital I/O
Mode and parameter 5-02 Terminal 29 Mode.
WARNING 42, Overload of digital output on X30/6 or
overload of digital output on X30/7
For X30/6, check the load connected to X30/6 or remove
the short-circuit connection. Check parameter 5-32 Term
X30/6 Digi Out (MCB 101).
For X30/7, check the load connected to X30/7 or remove
the short-circuit connection. Check parameter 5-33 Term
X30/7 Digi Out (MCB 101).
ALARM 46, Power card supply
The supply on the power card is out of range.
There are three power supplies generated by the switch
mode power supply (SMPS) on the power card: 24 V, 5 V,
±18 V. When powered with 24 V DC with the MCB 107
option, only the 24 V and 5 V supplies are monitored.
When powered with three-phase AC line voltage, all three
supplies are monitored.
WARNING 47, 24 V supply low
The 24 V DC supply is measured on the control card. The
external 24 V DC backup power supply may be overloaded;
otherwise, contact the Danfoss supplier.
WARNING 48, 1.8 V supply low
The 1.8 V DC supply used on the control card is outside of
the allowable limits. The power supply is measured on the
control card. Check for a defective control card. If an
option card is present, check for an overvoltage condition.
WARNING 49, Speed limit
When the speed is not within the specified range in
parameter 4-11 Motor Speed Low Limit [RPM] and
parameter 4-13 Motor Speed High Limit [RPM], the
adjustable frequency drive displays a warning. When the
speed is below the specified limit in parameter 1-86 Trip
Speed Low [RPM] (except when starting or stopping) the
adjustable frequency drive trips.
ALARM 50, AMA calibration failed
Contact the Danfoss supplier or Danfoss Service.
ALARM 51, AMA check U
nom
The settings for motor voltage, motor current, and motor
power are wrong. Check the settings in parameters 1-20 to
1-25.
ALARM 52, AMA low I
nom
The motor current is too low. Check the settings.
ALARM 53, AMA motor too big
The motor is too big for the AMA to operate.
ALARM 54, AMA motor too small
The motor is too small for the AMA to operate.
MG11F522
Instruction Manual
and I
nom
Danfoss A/S © 08/2014 All rights reserved.
ALARM 55, AMA parameter out of range
The parameter values of the motor are outside of the
acceptable range. AMA does not run.
ALARM 56, AMA interrupted by user
The user has interrupted the AMA.
ALARM 57, AMA internal fault
Try to restart AMA a number of times until the AMA is
carried out. Note that repeated runs may heat the motor
to a level where the resistance R
most cases, however, this is not critical.
ALARM 58, AMA Internal fault
Contact the Danfoss supplier.
WARNING 59, Current limit
The current is higher than the value in
parameter 4-18 Current Limit. Ensure that motor data in
parameters 1-20 to 1-25 are set correctly. Possibly increase
the current limit. Be sure that the system can operate
safely at a higher limit.
WARNING 60, External interlock
External interlock has been activated. To resume normal
operation:
1. Apply 24 V DC to the terminal programmed for
external interlock.
2. Reset the adjustable frequency drive via
2a serial communication
2b digital I/O
2c by pressing [Reset]
WARNING 62, Output frequency at maximum limit
The output frequency is higher than the value set in
parameter 4-19 Max Output Frequency.
ALARM 64, Voltage Limit
The load and speed combination demands a motor
voltage higher than the actual DC link voltage.
WARNING/ALARM 65, Control card overtemperature
The control card has reached its trip temperature of 80 °C
(176 °F).
WARNING 66, Heatsink temperature low
The adjustable frequency drive is too cold to operate. This
warning is based on the temperature sensor in the IGBT
module.
Increase the ambient temperature of the unit. Also, a
trickle amount of current can be supplied to the adjustable
frequency drive whenever the motor is stopped by setting
parameter 2-00 DC Hold/Preheat Current at 5% and
parameter 1-80 Function at Stop.
Troubleshooting
•
Check the temperature sensor.
•
Check the sensor wire between the IGBT and the
gate drive card.
and R are increased. In
s r
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