Technical documentation
Rev. 02
Reactive Factor Controller CX plus
48
"
NO
" = LOW active:
No signal is applied at the digital input
active
Signal applied at the digital input
not active
NOTE:
The digital input can be used either for switching to the target COS
(low rate) or for suppressing the I-LOW alarm. Its function is set under
SETUP/518.
512
Temperature limit 1 = fan
3
…
(TEMP2-5K) °C
If the temperature limit 1 is exceeded, the controller switches on the
switching output for the fan. The status message “
FAN
” is flashing on the
display in the bottom line of the main menu. If the temperature falls below
the temperature limit 1 by 5 K, the controller switches off the switching
output for the fan ag
ain after 10 s. The status message “
FAN
” is no longer
shown on the display.
NOTE:
If the switching output is used as an additional step output
(SETUP/406) (
“YES”), the fan control is activated via the alarm system.
513
Temperature limit 2 = alarm
(TEMP1+5K)…
60 °C
Setting of the temperature limit 2 = temperature alarm.
If the temperature limit 2 is exceeded, the alarm is signalled after the set
delay time (SETUP/ 504). The message "
thi
ALARM
" is shown on the
display and 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 temperature falls below the temperature level 2 by 5 K, the 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 10 s. The alarm relay is only reset, if no other alarm is
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 also are 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.
514
Control alarm (target COS
cannot be reached)
Yes/No
"
YES
": Control alarm is activated. If the controller could not reach the
target COS-PHI after a 75-fold switching time, because no suitable step is
available to be switched on resp. off (
Q > smallest step
over- /under-
compensation), the control alarm is signalled. The message "
PFC
ALARM
"
is shown on the display and the alarm relay opens its contact. When the
control reaches the target COS-PHI again, the alarm messages (display
and alarm relay) are automatically re
set, if the function “Manual reset”
(SETUP/501 = NO) is deactivated. The alarm relay is only reset if no other
alarm is active.
