Technical documentation
Rev. 02
Reactive Factor Controller CX plus
46
time is, at the same time, also the switch-off interval of the steps in case of
an alarm, if the setting SETUP/503 is activated.
505
Stop the control if I == 0
Yes/No
Measuring current refers to the current which is actually measured
by the controller in the secondary circuit (without considering the
current transformer factor).
"
YES
": If the measuring current is less than 5 mA, the control is stopped.
All active steps remain switched on.
When the measuring current is greater than or equal to 5 mA again, the
control is switched on again and the controller can switch steps on and off
again.
"
NO
": If the measuring current is less than 5 mA and the I-LOW alarm is
signalled, the controller switches off all active steps one by one at an
interval of 60 s. The last active step is switched off first and
immediately
.
The other steps are switched off one by one at the interval.
A
ctive “FON”
steps and steps which have been switched on manually are NOT
switched off.
When the measuring current is greater or equal to 5 mA
again, the still active step switch-off sequence is cancelled.
When the measuring current is greater than or equal to 5 mA again, the
control is switched on again and the controller can switch steps on and off
again.
506
Service alarm
Yes/No
"
YES
": If the set limit of the operating hours of the controller or of a step or
the switching cycles of a step are exceeded, the service alarm is signalled
immediately (display and alarm relay).
"
NO
": The service alarm is not signalled.
507
Max. switching cycles of a step
1...500000
Limit value of switching cycles for steps for the service alarm.
If the service alarm is activated (SETUP/506 = YES) and if the limit value
of the switching cycles for a step is exceeded, the service alarm is
signalled immediately. The message “
OPC
ALARM
” is shown on the display
alternatingly with the step number. Only the lowest step number of the
affected steps is displayed. The alarm relay opens its contact.
In order to reset the alarm, change the power contactors of the affected
steps as a preventive maintenance measure before, if necessary. After
this, manually set the switching cycle counters of the affected steps under
SETUP/404
to “0”. The alarm messages (display and alarm relay) are not
reset automatically until the switching cycle counters of all steps have
fallen below t
he set limit and the function “Manual reset” (SETUP/501 =
NO) is deactivated. The alarm relay is only reset, if no other alarm is
active.
508
Max. operating hours of the controller
1...65500 h
Limit value of the operating hours of the controller for the service alarm. If
the service alarm is activated (SETUP/506 = YES) and if the limit value of
the operating hours of the controller is exceeded by 1 h, the service alarm
is signalled immediately and the mes
sage “
OPH
ALARM
” is shown on the
display. The alarm relay opens its contact.
In order to reset the alarm, perform maintenance works at the system
