7.4
Serial communication and connections
7.4.1 Digital I/Os
Attention, every external device connected to the generator must respect the SELV
The appliance can be managed and/or monitored via a remote connection. The appliance is fitted with
several connectors, with the following functions:
RS485
: used for communication with other units
RS232
: used for local control via PC or for service operations.
I/Os:
Opto-isolated input that allows the compressor to be switched on/off via remote control;
Voltage free output for signalling the system status: Off, On, Alarm
Contact the reseller and/or the manufacturer for further information.
7.4.2 Auxiliary connections
At the rear of the generator are located the serial communication ports
RS232, RS485
and a
Digital I/O
input useful for remote control
of the
unit (see 2.5).
I/O connector
Pin
Description
1
Voltage-free contact (max 2A, 24Vac/dc) N.C.
2
Voltage-free contact (max 2A, 24Vac/dc) N.C.
3
Opto-isolated digital input (12-24Vac/dc)
4
Opto-isolated digital input (12-24Vac/dc)
NOTE:
The RS485 #1 port is reserved and not usable
1
SELV - Safety (Separated) Extra-Low-Voltage
Extra-Low-Voltage system (i.e. normally not exceeding 50 Vac or 120 V ripple-free d.c.) which is electrically separated from earth and from other systems in
such a way that a single fault cannot give rise to an electric shock.
Operating manual NG(A) CASTORE XS iQ
21
