n
"Pause" contact input
This input can be used to place the system in PAUSE status.
The input is isolated from all other electrical components of the
system.
"Contact open" indicates that PAUSE status is enabled.
n
"Process water flow" contact input
This input can be used to place the system in PAUSE status by
means of the minimum contact of a process water flow meter.
"Contact open" indicates that PAUSE status is activated.
n
"Ozone detector" contact input
The alarm output of an ozone detector can be connected to
this contact. The ozone detector should have a potential-free
alarm contact.
"Contact open" indicates ozone alarm.
n
Standard signal input
The function of the standard signal input 1 depends on the
operating mode of the system:
– "External" operating mode:
The standard signal input 1 can be used to specify the
ozone control variable, either via a 4-20 mA or a 0-20 mA
signal. Thus a current value of 0 or 4 mA corresponds to a
control variable of 0% and a current value of 20 mA corre‐
sponds to a control variable of 100%.
n
"Collective alarm" relay output
This output is used to report a fault in the system. The output is
configured as a changeover contact.
n
"Warning" relay output
This output is used to report a warning in the system. The
output is configured as a changeover contact.
n
"Ozone operating status message" relay output
This output is used to signal the "Operation with ozone" oper‐
ating status. It is enabled when the system is generating
ozone. (Control variable 3% and higher, no PAUSE status, no
error message.)
Electrical installation
37