TERMINAL BLOCKS
The controller is equipped with removable 5.08mm pitch terminals (J1 and J2) for low voltage (230V) and 3.5mm pitch (J3 and J4) signals for
very low voltage signals.
NR9003 “MASTER”
CONN # pin
Signal
Direction
Type of signal
Description
J1
1
F
Input
85-265Vac line phase
Power supply
2
N
85-265Vac line neutral
3
TR 2
Output
Triac 24…230Vac 4A
Close Hot / Cold Valve
4
Com 1/2
Output
COM Triac 1-2
Valve COM
5
TR 1
Output
Triac 24…230Vac 4A
Open Hot / Cold Valve
6
TR 4
Output
Triac 24…230Vac 4A
“Bathroom” Electrothermal Head
7
Com 3 /4
Output
COM Triac 3-4
COM Head / Pump
8
TR 3
Output
Triac 24…230Vac 4A
Zone 3 Electrothermal Head
J2
9
Com R123
Output
COM Relè 123
COM Rele 1, 2, 3
10
R1
Output
Relè 24…230Vac 8A
Zone 1 Electrothermal Head
11
R2
Output
Relè 24…230Vac 8A
Zone 2 Electrothermal Head
12
R3
Output
Relè 24…230Vac 8A
Circulation pump
13
Com R456
Output
COM Relè 456
COM Rele 4, 5, 6
14
R4
Output
Relè 24…230Vac 8A
Dehumidifier
15
R5
Output
Relè 24…230Vac 8A
Integration
16
R6
Output
Relè 24…230Vac 8A
Heat pump
J3
40
DI1
Input
Digital 1 / 24Vac
Plant ON / OFF
39
DI2
Input
Digital 2 / 24Vac
E / I switching
38
DI3
Input
Digital 3 / 24Vac
Thermostat T. Max Flow
37
DI4
Input
Digital 4 / 24Vac
Head Condition / Dew Detector
36
Com DI
Input
COM
Digital input COM
35
S1
Input
Analogic Input 1
Supply Temperature Sensor (NTC)
34
S2
Input
Analogic Input 2
External Temperature Sensor (NTC)
33
S3
Input
Analogic Input 3
Bathroom Temperature Sensor (NTC)
32
S4
Input
Analogic Input 4
External Temperature Sensor (0-10V)
31
Com S
Input
Analogic Input COM
COM Sensor
30
Com OC
Output
COM Open Collector
COM Open Col 12V
29
OC1
Output
Open Collector 1
External relay 1 - State E / I Heat Pump
J4
28
OC2
Output
Not used
27
AO2
Output
Not used
26
AO1
Output
Analogic output 1
Proportional C / F Valve (0-10V)
25
Com AO
Bidir.
Analog. Output COM
COM / Shield 485
24
485-
Bidir.
Bus RS485 -
Modbus Slave (Supervision)
23
485+
Bidir.
Bus RS485 +
Modbus Slave (Supervision)
22
+12V
Output
Not used
21
SDA
Bidir.
Not used
20
SCL
Bidir.
Not used
19
GND
Bidir.
Shield 485
Shield 485
18
485-
Bidir.
Bus RS485 -
Modbus Master (STA61M Sensors)
17
485+
Bidir.
Bus RS485 +
Modbus Master (STA61M Sensors)
NR9003 “SLAVE”
Only the terminals shown in the table are used.
CONN # pin
Signal
Direction
Type of signal
Description
J1
1
F
Input
85-265Vac line phase
Power supply
2
N
85-265Vac line neutral
J2
9
Com R123
Output
COM Relè 123
COM Rele 1, 2, 3
10
R1
Output
Relè 24…230Vac 8A
Zone 4 Electrothermal Head
11
R2
Output
Relè 24…230Vac 8A
Zone 5 Electrothermal Head
12
R3
Output
Relè 24…230Vac 8A
Zone 6 Electrothermal Head
13
Com R456
Output
COM Relè 456
COM Rele 4, 5, 6
14
R4
Output
Relè 24…230Vac 8A
Zone 7 Electrothermal Head
15
R5
Output
Relè 24…230Vac 8A
Zone 8 Electrothermal Head
16
R6
Output
Relè 24…230Vac 8A
Zone 9 Electrothermal Head
J4
25
GND
Bidir.
Shield 485
Shield 485
24
485-
Bidir.
Bus RS485 -
Modbus Slave (NR9003)
23
485+
Bidir.
Bus RS485 +
Modbus Slave (NR9003)
1
a
Emissione / 1
st
Issue rev. a
03/2020
4
DIM292
