5. Extended functions
18
5.8 Remote control
5.8.1 Remote control for pressure
changeover
Danger
In this operating mode, the compressor may start
automatically at any time.
Attention
Only potential-free contacts may be connected to
the terminal strip. External voltages will destroy the
DELCOS
Pro
.
The potential-free contacts must not be more than
20 metres away from the terminal strip.
If necessary coupling relays must be fitted in the
control cabinet.
CUT-OUT POINT
CUT-IN POINT
p2 CUT-OUT
p2 CUT-IN
p2 TIMER CONTROL
Input X:
2nd pressure range
ON-LOAD
Fig. 5 Circuit diagram for pressure changeover.
Sections 5.1.2 and 5.3.2 contain explanations of how to
set the second pressure range and the possibility of -
timer operations with the second pressure range.
But you can also activate the second pressure range
remotely. This is done using a digital input (input X in
Fig. 5) on the DELCOS
Pro
(see section 5.5.1 and
circuit diagram).
In the
[OPTIONAL
IN-/OUTPUTS]
menu you have to
program the inputs using the
2nd PR. RANGE
function.
A potential-free contact can now be connected to the
terminal strip of the programmable input. If this contact
is closed, the system changes over to the second
pressure range.
You can also use this contact to take the programmed
timer for the second pressure range out of service.
