Danfoss VLT AutomationDrive FC 301 Instruction Manual page 49

Maintenance, Diagnostics an...
WARNING 60, External interlock
A digital input signal is indicating a fault condition external
to the adjustable frequency drive. An external interlock has
commanded the adjustable frequency drive to trip. Clear
the external fault condition. To resume normal operation,
apply 24 V DC to the terminal programmed for external
interlock. Reset the adjustable frequency drive.
WARNING/ALARM 61, Feedback error
An error between the calculated speed and speed
measurement from the feedback device. The function
Warning/Alarm/Disabling setting is in 4-30 Motor Feedback
Loss Function. Accepted error setting in 4-31 Motor
Feedback Speed Error and the allowed time the error occur
setting in 4-32 Motor Feedback Loss Timeout. During a
commissioning procedure the function may be effective.
WARNING 62, Output frequency at maximum limit
The output frequency has reached the value set in
4-19 Max Output Frequency. Check the application to
determine the cause. Possibly increase the output
frequency limit. Be sure the system can operate safely at a
higher output frequency. The warning clears when the
output drops below the maximum limit.
ALARM 63, Mechanical brake low
The actual motor current has not exceeded the release
brake current within the start delay time window.
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 cut-out temperature of the control card is 176°F
[80°C].
Troubleshooting
•
Check that the ambient operating temperature is
within the limits.
•
Check for clogged filters.
•
Check the fan operation.
•
Check the control card.
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
2-00 DC Hold/Preheat Current at 5% and 1-80 Function at
Stop.
MG33AP22
Instruction Manual
ALARM 67, Option module configuration has changed
One or more options have either been added or removed
since the last power-down. Check that the configuration
change is intentional and reset the unit.
ALARM 68, Safe Stop activated
STO has been activated. To resume normal operation,
apply 24 V DC to terminal 37, then send a reset signal (via
bus, digital I/O, or by pressing [Reset]).
ALARM 69, Power card temperature
The temperature sensor on the power card is either too
hot or too cold.
Troubleshooting
•
•
•
•
ALARM 70, Illegal FC configuration
The control card and power card are incompatible. To
check compatibility, contact the Danfoss supplier with the
type code of the unit from the nameplate and the part
numbers of the cards.
ALARM 71, PTC 1 safe stop
STO has been activated from the VLT PTC Thermistor Card
MCB 112 (motor too warm). Normal operation can be
resumed when the MCB 112 applies 24 V DC to terminal
37 again (when the motor temperature reaches an
acceptable level) and when the digital input from the MCB
112 is deactivated. When that happens, a reset signal must
be sent (via bus or digital I/O, or press [Reset]).
ALARM 72, Dangerous failure
STO with trip lock. An unexpected combination of STO
commands has occurred:
•
•
WARNING 73, Safe Stop auto restart
Safe stopped. With automatic restart enabled, the motor
can start when the fault is cleared.
ALARM 74, PTC Thermistor
Alarm related to the ATEX option. The PTC is not working.
Danfoss A/S © Rev. 09/2014 All rights reserved.
Check that the ambient operating temperature is
within limits.
Check for clogged filters.
Check fan operation.
Check the power card.
VLT PTC Thermistor Card enables X44/10, but STO
is not enabled.
MCB 112 is the only device using STO (specified
through selection [4] PTC 1 Alarm or [5] PTC 1
Warning in 5-19 Terminal 37 Safe Stop), STO is
activated, and X44/10 is not activated.
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