Danfoss VLT AutomationDrive FC 301 Operating Instructions Manual page 48

Maintenance, Diagnostics an...
•
VLT PTC Thermistor Card MCB 112 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.
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.
ALARM 75, Illegal profile sel.
Parameter value must not be written while motor is
running. Stop motor before writing MCO profile to
8-10 Control Word Profile.
WARNING 76, Power unit setup
7 7
The required number of power units does not match the
detected number of active power units.
WARNING 77, Reduced power mode
The frequency converter is operating in reduced power
mode (less than the allowed number of inverter sections).
This warning is generated on power cycle when the
frequency converter is set to run with fewer inverters and
remains on.
ALARM 78, Tracking error
The difference between set-point value and actual value
has exceeded the value in 4-35 Tracking Error. Disable the
function or select an alarm/warning in 4-34 Tracking Error
Function. Investigate the mechanics around the load and
motor, check feedback connections from motor encoder to
frequency converter. Select motor feedback function in
4-30 Motor Feedback Loss Function. Adjust tracking error
band in 4-35 Tracking Error and 4-37 Tracking Error
Ramping.
ALARM 79, Illegal power section configuration
The scaling card has an incorrect part number or is not
installed. The MK102 connector on the power card could
not be installed.
ALARM 80, Drive initialised to default value
Parameter settings are initialised 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 initialise 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.
46
Operating Instructions
ALARM 88, Option detection
A change in the option layout was detected. 14-89 Option
Detection is set to [0] Frozen configuration and the option
layout has been changed.
WARNING 89, Mechanical brake sliding
The hoist brake monitor has detected a motor speed > 10
RPM.
ALARM 90, Feedback monitor
Check the connection to encoder/resolver option and
eventually replace the MCB 102 or MCB 103.
ALARM 91, Analog input 54 wrong settings
Switch S202 has to be set in position OFF (voltage input)
when a KTY sensor is connected to analog input terminal
54.
ALARM 99, Locked rotor
Rotor is blocked.
WARNING/ALARM 104, Mixing fan fault
The fan is not operating. The fan monitor checks that the
fan is spinning at power-up or whenever the mixing fan is
turned on. The mixing-fan fault can be configured as a
warning or an alarm trip in 14-53 Fan Monitor.
Troubleshooting
WARNING/ALARM 122, Mot. rotat. unexp.
The frequency converter performs a function that requires
the motor to be at standstill, e.g. DC hold for PM motors.
WARNING 163, ATEX ETR cur.lim.warning
The frequency converter has run above the characteristic
curve for more than 50 s. The warning is activated at 83%
and deactivated at 65% of the permitted thermal overload.
ALARM 164, ATEX ETR cur.lim.alarm
Operating above the characteristic curve for more than
60 s within a period of 600 s activates the alarm, and the
frequency converter trips.
WARNING 165, ATEX ETR freq.lim.warning
The frequency converter is running more than 50 s below
the permitted minimum frequency (1-98 ATEX ETR interpol.
points freq.).
ALARM 166, ATEX ETR freq.lim.alarm
The frequency converter has operated more than 60 s (in a
period of 600 s) below the permitted minimum frequency
(1-98 ATEX ETR interpol. points freq.).
Danfoss A/S © Rev. 07/2014 All rights reserved.
•
To apply the change, enable option layout
changes in 14-89 Option Detection.
•
Alternatively, restore the correct option configu-
ration.
•
Cycle power to the frequency converter to
determine if the warning/alarm returns.
MG33AP02