Technical documentation
Rev. 02
Reactive Factor Controller CX plus
67
12.5 Switching to target Cos
2 via the digital input
The CX plus shall be switched to the second target COS
via an external switching signal.
Solution:
The digital input of the controller may be used for switching to the set target COS
2.
Procedure:
Activate the function “
Digital input switches to the target COS
” (SETUP/518).
Set the setting to “
NO
” in the SETUP menu 518 (DEFAULT).
Set the logic of the digital input (SETUP/511).
The logic can be set in the SETUP menu 511, whether the digital input is HIGH or LOW active:
“YES”
= HIGH active
“NO”
= LOW active
Function:
If the digital input is activated, th
e notification “
NT
” appears on the display and the controller regulates
towards the set
target COS
.
If the digital input is no longer activated, the notification “
NT
” disappears from the display and the
controller regulates towards the set
target COS
again.
12.6 Suppression of the I-LOW alarm by the digital input
I-LOW condition during the off-peak period may be a normal operating condition. Therefore, the CX
plus shall not signal an I-LOW alarm. Because of this, the I-LOW alarm shall be suppressed via an
external switching signal.
Solution:
The digital input of the controller may be used for suppressing the I-LOW alarm.
Procedure:
Activate the function “
Suppress the I-LOW alarm via the digital input
” (SETUP/518).
Set the setting to “
YES
” in the SETUP menu 518.
Set the logic of the digital input (SETUP/511).
The logic may be set in the SETUP menu 511, whether the digital input is HIGH or LOW active:
