OS3030
Input functions
17
Excess pressure
The excess pressure function can be pro-
grammed for the IN1, IN2 or IN3 inputs.
Several excess pressure switches may be
connected in series.
WARNING! Press "ON" to switch the system
back on. If there is excess pressure, it cuts out
again after 2 seconds.
The response time is 2 seconds.
The "excess pressure" alarm signal can be
connected to the alarm relay or to the buzzer.
The "excess pressure" phase is displayed in
the LCD.
Low-pressure
The low-pressure function can be programmed
for the IN1, IN2 or IN3 inputs.
The low-pressure function serves to prevent
the high-pressure pump running dry.
A switch-on delay of between 1 and 999 sec-
onds can be set in programming step 5.5. An
automatic restart sequence of 0 to 9 attempts
can also be set. Once this sequence is over,
the system cuts out completely and can then
only be switched back on manually by pressing
"ON" (see programming steps 5.6 - 5.7).
In programming step 5.8, specify the phases in
which the controls are activated.
The "low-pressure" alarm signal can be con-
nected to the alarm relay or to the buzzer.
The "low-pressure" alarm signal is displayed in
the LCD.
Concentrate
The concentrate function can be programmed
for the IN1, IN2 or IN3 inputs.
A flow monitor, for example, can be used to
monitor the concentrate flow.
A switch-on delay of between 1 and 999 sec-
onds can be set in programming step 5.. An
automatic restart sequence of 0 to 9 attempts
can also be set. Once this sequence is over,
the system cuts out completely and can then
only be switched back on manually by pressing
"ON" (see programming steps 5.3 - 5.4).
The "concentrate" alarm signal can be con-
nected to the alarm relay or to the buzzer.
The "concentrate" alarm signal is displayed in
the LCD.
External alarm switch
The external alarm switch function can be pro-
grammed for the IN1, IN2 or IN3 inputs.
This function can be used for various fault
signals, e.g. for the alarm contact on a 3-phase
motor circuit-breaker.
In programming steps 5.9 - 5.12, set a delay
time, specify whether the system cuts out,
whether it can only be switched back on
manually and in which phases the controls are
activated.
The "external alarm switch" alarm signal can
be connected to the alarm relay or to the
buzzer.
The system can be switched back on by press-
ing "ON", even while the alarm signal is active.
The alarm signal is ignored until the next deac-
tivation sequence.
The "external alarm switch" alarm signal is
displayed in the LCD.
Conductivity probe
The connection for the conductivity probe is
marked "CC". Ensure that the correct cell con-
stants are entered in programming step 1.2.
