Danfoss VLT FC 103 Operating Manual page 76

Maintenance, Diagnostics, a...
ALARM 69, Power card temperature
The temperature sensor on the power card is either too
hot or too cold.
Troubleshooting
•
Check that the ambient operating temperature is
within limits.
•
Check for clogged filters.
•
Check fan operation.
•
Check the power card.
ALARM 70, Illegal FC configuration
The control card and power card are incompatible. To
check compatibility, contact the Danfoss supplier with the
type code from the unit nameplate and the part numbers
of the cards.
WARNING/ALARM 71, PTC 1 Safe Stop
Safe Torque Off (STO) has been activated from the VLT
PTC Thermistor Card MCB 112 because the motor is too
8 8
warm. Once the motor cools and the digital input from the
MCB 112 is deactivated, normal operation can resume
when the MCB 112 applies 24 V DC to terminal 37 again.
When the motor is ready for normal operation, a reset
signal is sent (via serial communication, digital I/O, or by
pressing [Reset] on the LCP). If automatic restart is
enabled, the motor can start when the fault is cleared.
ALARM 72, Dangerous failure
Safe Torque Off (STO) with trip lock. Unexpected signal
levels on safe torque off and digital input from the VLT
PTC Thermistor Card MCB 112.
WARNING 73, Safe Stop auto restart
Safe Torque Off (STO) activated. With automatic restart
enabled, the motor can start when the fault is cleared.
ALARM 74, PTC Thermistor
Alarm related to VLT
PTC is not working.
ALARM 75, Illegal profile sel.
Do not write the parameter value while the motor is
running. Stop the motor before writing the MCO profile to
parameter 8-10 Control Word Profile.
WARNING 76, Power unit setup
The required number of power units does not match the
detected number of active power units. When replacing an
enclosure size F module, this warning occurs if the power-
specific data in the module power card does not match
the rest of the drive. If the power card connection is lost,
the unit also triggers this warning.
Troubleshooting
•
Confirm that the spare part and its power card
are the correct part number.
•
Ensure that the 44-pin cables between the MDCIC
and power cards are mounted properly.
74
VLT® Refrigeration Drive FC 103
®
PTC Thermistor Card MCB 112. The
Danfoss A/S © 04/2018 All rights reserved.
WARNING 77, Reduced power mode
This warning indicates that the drive is operating in
reduced power mode (that is, less than the allowed
number of inverter sections). This warning is generated on
power cycle when the drive is set to run with fewer
inverters and remains on.
ALARM 78, Tracking error
The difference between setpoint value and actual value
exceeds the value in parameter 4-35 Tracking Error.
Troubleshooting
•
Disable the function or select an alarm/warning
in parameter 4-34 Tracking Error Function.
•
Investigate the mechanics around the load and
motor. Check feedback connections from motor
encoder to drive.
•
Select motor feedback function in
®
parameter 4-30 Motor Feedback Loss Function.
•
Adjust the tracking error band in
parameter 4-35 Tracking Error and
parameter 4-37 Tracking Error Ramping.
ALARM 79, Illegal power section configuration
The scaling card is the incorrect part number or not
installed. Also, the MK102 connector on the power card
could not be installed.
ALARM 80, Drive initialised to default value
Parameter settings are initialized to default settings after a
manual reset. To clear the alarm, reset the unit.
®
ALARM 81, CSIV corrupt
CSIV file has syntax errors.
ALARM 82, CSIV parameter error
CSIV failed to initialize a parameter.
ALARM 83, Illegal option combination
The mounted options are incompatible.
ALARM 84, No safety option
The safety option was removed without applying a general
reset. Reconnect the safety option.
ALARM 85, Dang fail PB
PROFIBUS/PROFIsafe error.
ALARM 88, Option detection
A change in the option layout is detected.
Parameter 14-89 Option Detection is set to [0] Frozen config-
uration and the option layout has been changed.
•
To apply the change, enable option layout
changes in parameter 14-89 Option Detection.
•
Alternatively, restore the correct option configu-
ration.
WARNING 89, Mechanical brake sliding
The hoist brake monitor detects a motor speed exceeding
10 RPM.
MG16P222