Technical documentation
Rev. 02
Reactive Factor Controller CX plus
45
500
Settings ALARM
MENU
FUNCTION
AREA
501
Reset alarm manually
Yes/No
"
YES
": Alarm messages (display and alarm relay) must be reset manually.
In order to reset active alarms,
keep
the key
(ESC)
pressed
for
approx. 3 s.
"
NO
": As soon as the alarm condition is no longer active, the alarm
messages (display and alarm relay) is reset automatically.
NOTE:
An alarm can only be reset manually, if it is no longer active. The
alarm relay cannot be reset again until no alarm is active anymore.
502
THD-U limit value
3...20 %
Setting of the limit value for the THD-U monitoring.
If the set THD-U limit value is exceeded, the alarm is signalled (display
and alarm relay) after the set delay time (SETUP/ 504). The message
"
HarU
ALARM
" appears on the display. The alarm relay opens its contact.
If the function SETUP/503 is activated, all active steps ("AUTO" & "FON")
are switched off one by one with the delay time set under SETUP/504 and
are locked for 30 min. The last active step is switched off first, when the
delay time has run out after the signalling of the alarm. Then, the other
steps are switched off one by one at the interval of the delay time. When
all active steps have been switched off, the control is stopped for as long
as the alarm is still active.
If the value falls below the set THD-U limit value, a still active step switch-
off sequence is cancelled. The already switched-off steps, however,
remain locked until the blocking time (max. 30 min) has run out. If the
control has been stopped, this is restarted and the controller can switch
the steps again. If the function “Manual reset” (SETUP/501 = NO) is
deactivated, the alarm messages (display and alarm relay) are reset
automatically after 15 s.
NOTE:
The alarm relay is only reset, if no other alarm is active.
503
THD-U / THD-I / TEMP 2 alarm = switch off active steps
Yes/No
"
NO
": active steps are not switched off in case of an alarm.
"
YES
": When the set THD-U or THD-I or TEMP 2 limit value is exceeded,
all active steps ("AUTO" & "FON") are switched off one by one with the
delay time set under SETUP/504 and are locked for 30 min. The last active
step is switched off first, when the delay time has run out after the
signalling of the alarm. Then, the other steps are switched off one by one
at the interval of the delay time. When all active steps have been switched
off, the control is stopped for as long as one of these three alarms is still
active.
NOTE:
The control is stopped while the alarm is still active. The steps
which have been switched off by the alarm system are locked for max. 30
min. Active “FON” steps are also switched off and blocked. Steps which
have been switched on manually are NOT switched off. If you manually
switch off a step, this is only locked during the discharge time.
504
Delay time THD-U, THD-I and TEMP 2 alarm / switch-off interval of the
steps
1...255 s
Adjustable delay time for the THD-U, THD-I and TEMP 2 alarm. The set
