30
CONTROL SYSTEM
DESCRIPTION
CHARACTERISTICS
Analogue inputs
AI1
SIW
water inlet probe
NTC temperature sensor (-30°C ÷ 90°C)
AI2
SUW
water outlet probe
NTC temperature sensor (-30°C ÷ 90°C)
AI3
SL
liquid line probe
NTC temperature sensor (-30°C ÷ 90°C)
AI4
STAE
outdoor air probe
NTC temperature sensor (-30°C ÷ 90°C)
Digital inputs
ID1
PA
High pressure switch
voltage free digital input
TVE
Fan thermal protection
ID2
PB
Low pressure switch
voltage free digital input
SEQ
Phase presence and sequence controller
ID3
PD
Differential pressure switch
voltage free digital input
ID4
ON-
OFF
Remote stand by
voltage free digital input
ID5
E-I
Remote Cooling-Heating
voltage free digital input
Analogue outputs
TK1
VE
Fans
internal phase cut card output (2 A max - 250 Vac)
AO3
PM
Modulating pump
10V voltage output
Digital outputs
DO1
ALL
Alarm
relay 2 A resistive - 250 Vac
DO2
CP
Compressor
relay 2 A resistive - 250 Vac
DO3
VIC
Reverse cycle valve
relay 2 A resistive - 250 Vac
DO4
RSC
Plate heat exchanger antifreeze heater
relay 2 A resistive - 250 Vac
RAG
RE1
Tank antifreeze heater
Integrative heater 1
st
step
DO5
P
Pump
500mA - 12Vdc voltage output
for control of relay K1 (4 A resistive - 250 Vac)
AO2
RE2
Integrative heater 2
nd
step
10V voltage output
for control of relay KA2 (12 A resistive - 250 Vac)
All the inputs and outputs are connected to the wiring board except for output AO2 which directly controls a relay inside the elec
-
trical panel of the unit and output AO3 which directly control the modulating pump.
Description
Typical
Minimum
Maximum
Power supply voltage *
12,0 V~
10,8 V~
13,2 V~
Power supply frequency
50 Hz / 60 Hz
-
-
Power
5 VA
-
-
Insulation class
2
-
-
Protection degree
Frontale IP0
-
-
Ambient operating temperature
25 °C
-10 °C
60 °C
Ambient operating humidity (not condensing)
30 %
10 %
90 %
Ambient storage temperature
25 °C
-20 °C
85 °C
Ambient storage humidity (not condensing)
30 %
10 %
90 %
* The controller is powered by a proper insulated transformer mounted on the wiring board.
Inputs and outputs
In order to control the unit, the controller is equipped with the following inputs and outputs :
• Analogue inputs :
4
• Digital inputs :
5
• Analogue outputs :
2
• Digital outputs :
6
Controller technical data
Содержание RXA 11.1
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