EVCO c-pro nano HPR0 - Manual (Page 5)

C-PRO NANO HPR0 APPLICATION MANUAL
Page 5
1.1 I/O
For HPR0 a C-PRO NANO (INTRAbus) must be used with the following features .
Total analogical inputs: 4.
Total digital inputs: 5 (*). Total digital outputs: 6.
Total analogical outputs: 1 + 2 optionals (not present on this application).
(*) Note: A total number of 7 digital inputs are used in this application for this purpose n°2 analogue inputs will be used
as digital inputs.
I/O Description
Analogue Inputs
A/I 1 Heating/cooling outlet / condit. (NTC)
A/I 2
A/I 3 Summer - Winter (ON-OFF potential-free contact)
A/I 4 External thermostat (ON-OFF potential-free contact)
Serial ports (RS 485 and
INTRABUS)
TTL (RS 485) TTL with ext interf. EVIF becomes RS485 Modbus RTU
INTRAbus towards c-pro EVCO instruments
Digital Inputs
D/I 1 High pressure switch (ON-OFF potential-free contact)
D/I 2 Low pressure switch (ON-OFF potential-free contact)
D/I 3 Geothermic circuit flow switch (ON-OFF potential-free contact)
D/I 4 Outlet circuit flow meter (ON-OFF potential-free contact)
D/I 5 Room thermostat (ON-OFF potential-free contact)
Analogue Outputs
A/O 1 PWM output not used
A/O 2 Optional (4-20 mA/0-10 V) : not present
A/O 3 Optional (4-20 mA/0-10 V) : not present
Digital Outputs
D/O 1 compressor 1
D/O 2 compressor 2
D/O 3 CYCLE INVERSION 4-WAY VALVE
D/O 4 Geothermic circuit pump
D/O 5 Heating/air conditioning outlet circuit pump
D/O 6 General alarm
N.B.: All contacts arriving at the controller inputs must be potential free contacts, without voltage.