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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
somehow 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 unexpected
combination is activation of safe stop without the X44/ 10
being activated. 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.
[9]
+ -
+: activated
-: Not activated
ALARM 78, Tracking Error:
The difference between set point value and actual value
has exceeded the value in par. 4-35 Tracking Error.
Disable the function by par. 4-34 Tracking Error Function
or select an alarm/warning also in par. 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
par. 4-30 Motor Feedback Loss Function. Adjust tracking
error band in par. 4-35 Tracking Error and par. 4-37
Tracking Error Ramping.
ALARM 80, Drive Initialized to Default Value:
Parameter settings are initialized to default setting after a
manual (three-finger) reset.
ALARM 81, CSIV corrupt:
CSIV file has syntax errors.
ALARM 82, CSIV parameter error:
CSIV failed to init a parameter.
ALARM 85, Dang fail PB:
Profibus/Profisafe Error.
ALARM 86, Dang fail DI:
Sensor Error.
ALARM 90, Feedback Monitor:
Check the connection to encoder/ resolver option and
eventually replace the MCB 102or 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:
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
par. 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.
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