ALARM 58, AMA internal fault:
Contact your Danfoss supplier.
WARNING 59, Current limit:
The current is higher than the value in par. 4-18
Current Limit
.
WARNING 60, External interlock
External interlock has been activated. To resume normal operation, apply
24 V DC to the terminal programmed for external interlock and reset the
adjustable frequency drive (via serial communication, digital I/O, or by
pressing reset button on keypad).
WARNING/ALARM 61, Feedback Error:
An error between calculated speed and speed measurement from feed-
back device. The function Warning/Alarm/Disabling setting is in
par. 4-30
Motor Feedback Loss Function
. Accepted error setting in
par. 4-31
Motor Feedback Speed Error
and the allowed time the error
occur setting in par. 4-32
Motor Feedback Loss Timeout
. During a com-
missioning procedure, the function may be effective.
WARNING 62, Output Frequency at Maximum Limit:
The output frequency is higher than the value set in par. 4-19
Max Output
Frequency
. This is a warning in VVC
plus
mode and an alarm (trip) in flux
mode.
ALARM 63, Mechanical Brake Low:
The actual motor current has not exceeded the “release brake” current
within the “Start delay” time window.
WARNING 64, Voltage Limit:
The load and speed combination demands a motor voltage higher than
the actual DC link voltage.
WARNING/ALARM/TRIP 65, Control Card Overtemperature:
Control card overtemperature: The cut-out temperature of the control
card is 176°F [80°C].
WARNING 66, Heatsink Temperature Low:
The heatsink temperature is measured as 32°F [0°C]. This could indicate
that the temperature sensor is defect and that the fan speed has thus
increased to the maximum in case the power part or control card is very
hot.
ALARM 67, Option Configuration has Changed:
One or more options has either been added or removed since the last
power-down.
ALARM 68, Safe Stop:
Safe Stop has been activated. To resume normal operation, apply 24 V
DC to T-37. Press reset button on LCP.
WARNING 68, Safe Stop:
Safe Stop has been activated. Normal operation is resumed when safe
stop is disabled. Warning: Automatic Restart!
ALARM 69, Power card temperature
The temperature sensor on the power card is either too hot or too cold.
Troubleshooting:
Check the operation of the door fans.
Make sure that the filters for the door fans are not blocked.
Check that the connector plate is properly installed on IP 21 and
IP 54 (NEMA 1 and NEMA 12) drives.
ALARM 70, Illegal FC Configuration:
The current control board and power board combination is illegal.
ALARM 71, PTC 1 Safe Stop:
Safe Stop has been activated from the MCB 112 PTC Thermistor Card
(motor too warm). Normal operation can be resumed when the MCB 112
applies 24 V DC to T-37 again (when the motor temperature reaches an
acceptable level) and when the digital input from the MCB 112 is deacti-
vated. When that happens, a reset signal must be is be sent (via Bus,
Digital I/O, or by pressing [RESET]).
WARNING 71, PTC 1 Safe Stop:
Safe Stop has been activated from the MCB 112 PTC Thermistor Card
(motor too warm). Normal operation can be resumed when the MCB 112
applies 24 V DC to T-37 again (when the motor temperature reaches an
acceptable level) and when the digital input from the MCB 112 is deacti-
vated. Warning: Automatic Restart.
ALARM 72, Dangerous Failure:
Safe Stop with Trip Lock. The dangerous failure alarm is issued if the
combination of safe stop commands is unexpected. This is the case if the
MCB 112 VLT PTC thermistor card enables X44/ 10 but safe stop is some-
how not enabled. Furthermore, if the MCB 112 is the only device using
safe stop (specified through selection [4] or [5] in par. 5-19), an unex-
pected combination activates safe stop without the X44/10 being activa-
ted. The following table summarizes the unexpected combinations that
lead to Alarm 72. Note that if X44/ 10 is activated in selection 2 or 3, this
signal is ignored! However, the MCB 112 will still be able to activate safe
stop.
Function No. X44/ 10 (DI) Safe Stop
T37
PTC 1 Warning [4] + -
-+
PTC 1 Alarm [5] + -
-+
PTC 1 & Relay A [6] + -
PTC 1 & Relay W [7] + -
PTC 1 & Relay A/W [8] + -
PTC 1 & Relay W/A [9] + -
+ = activated
- = Not activated
WARNING 73, Sf stp aut rest
Safe stopped. Note that with automatic restart enabled, the motor may
start when the fault is cleared.
WARNING 76, Power Unit Set-up
The required number of power units does not match the detected number
of active power units.
Troubleshooting:
When replacing an F frame module, this will occur if the power specific
data in the module power card does not match the rest of the drive.
6 Troubleshooting
VLT
®
AutomationDrive FC 300 Instruction
Manual
6-8
MG.33.AG.22 - VLT
®
is a registered Danfoss trademark
6