Danfoss VLT Decentral Drive FCD 302 Operating Manual page 73

Troubleshooting Operating Guide
ALARM 88, Option Detection
A change in the option layout has been detected. This
alarm occurs when parameter 14-89 Option Detection is set
to [0] Frozen configuration and the option layout for some
reason has changed. Enable an option layout change in
parameter 14-89 Option Detection before the change is
accepted. If the change of configuration is not accepted, it
is only possible to reset Alarm 88 (Trip-lock) when the
option configuration has been re-established/corrected.
ALARM 90, Feedback Monitor
Check the connection to encoder/resolver option and
eventually replace the MCB 102 or MCB 103.
ALARM 91, Analogue Input 54 Wrong Settings
Switch S202 has to be set in position OFF (voltage input)
when a KTY sensor is connected to analogue input
terminal 54.
ALARM 250, New Spare Part
7 7
The power or Switch Mode Power Supply has been
exchanged. The frequency converter type code must be
restored in the EEPROM. Select the correct type code in
parameter 14-23 Typecode Setting according to the label on
unit. Remember to select 'Save to EEPROM' to complete.
ALARM 251, New Type Code
The frequency converter has got a new type code.
MG04F402 Danfoss A/S © 05/2016 All rights reserved. 71