7. Other information
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7.4 Compressor fault monitoring [P72]
Fault monitoring is used to indicate problems with the proper running of the com-
pressor.
The fault message occurs depending on the parameterisation
- by evaluating the potential-free auxiliary contact of the motor protection switch
(setting 1, 2),
- by evaluation of the potential-free auxiliary contact of the compressor contactor
(setting 3, 4),
Fault monitoring is only possible if the digital input - parameter [A21] - is set to '5'.
The following settings of fault monitoring are possible:
Parameter [P72] is set to 0
Fault monitoring is deactivated
Parameter [P72] is set to 1
The auxiliary contact of the motor protection relay or of the motor protection switch
is queried.
Is this auxiliary contact opened
= fault “F53” is displayed.
Parameter [P72] is set to 2
The auxiliary contact of the motor protection relay or of the motor protection switch
is queried.
Is this auxiliary contact closed
= fault “F53” is displayed.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Parameter [P72] is set to 3 *
Fault monitoring by switch-on feedback from the compressor contactor-auxiliary con-
tact (N/O contact).
Parameter [P72] is set to 4 *
Same as 3, but switch-on feedback from the compressor contactor auxiliary contact
(NC contact).
* Settings 3 and 4:
When the compressor is switched on, feedback information is expected at the digital
input of the controller after 60 seconds at the latest. If this feedback is not received,
error "F53" is triggered.
NOTICE
