Schrack Technik CX plus Series FRACXP06R-, User Manual

Page: 60 / 80

60
S
WITCHING TO TARGET
C
OS

2
VIA THE DIGITAL INPUT
The second target cos

is able to be activated via an external digital input 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

2
” (SETUP/518).
Set the setting to “CP 2” under 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, the notification
“
NT
” appears on the display and the controller regulates
towards the set target COS

2 .
If the digital input is not activated, the notification
“
NT
” disappears from the display and the controller
regulates towards the set target COS

1

again.
S
UPPRESSION 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 should 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 “I Lo” 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:
“YES”
= HIGH active
“NO”
= LOW active
Function:
If the digital input is activated, an active I-LOW-alarm is suppressed.
“
YES
” is shown on the status
display for the I-LOW-alarm suppression (SETUP/519).
If the digital input is no longer activated, the suppression is deactivated. An active I-LOW-alarm is
signalled now (display and alarm relay).
“
NO
” is shown on the status display of the I-LOW-alarm suppression (SETUP/519).
NOTE: If an active I-LOW-alarm is signalled and if the digital input is activated for suppression, the
alarm message is only reset after 15 s. The AUTO symbol is not displayed again until the set switching
time has run out, provided that the control is not switched off.
NOTE: If an active I-LOW-alarm is being suppressed at the moment and if the digital input is no longer
activated, the alarm is not signalled until the delay time of 60 s has run out.