42
Adjustable delay time for THD-U- and THD-I-alarms.
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 stages 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 stages 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 stages one by one at an
interval of 60 s. The last active stage is switched off first and
immediately
.
The other stages are switched off one by one at the interval.
Active
“FON”
stages and stages 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 stage 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 stages on and off
again.
506
Service alarm
Yes/No
“
YES
”: If the set limit of the operating hours of the controller or of a stage or
the switching cycles of a stage 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 stage
1...500000
Limit value of switching cycles for stages for the service alarm.
If the service alarm is activated (SETUP/506 = YES) and if the limit value of
the switching cycles for a stage is exceeded, the service alarm is signalled
immediately. The message
“
OPC
ALARM
” is shown on the display
alternatingly with the stage number. Only the lowest stage number of the
affected stages is displayed. The alarm relay opens its contact.
In order to reset the alarm, change the power contactors of the affected
stages as a preventive maintenance measure before, if necessary. After
this, manually set the switching cycle counters of the affected stages under
SETUP/404 to
“0”. The alarm messages (display and alarm relay) are not
reset automatically until the switching cycle counters of all stages have fallen
below the 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 message
“
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
before, if necessary. After this, manually set the operating hour counter of
the controller under SETUP/603 back to 0 h. The alarm messages (display
and alarm relay) are not reset automatically until the switching cycle
counters of all stages have fallen below the set limit and the function
“Manual reset” (SETUP/501 = NO) is deactivated. The alarm relay is only
reset, if no other alarm is active.
