4
Electrical connection
Electrical power connections ATR-Smart-Web
The transmission between the room thermostat
and the controlled unit(s) is done by connecting
two MOD-BUS lines to the GPC Smart pro-
cessor(s) in the unit(s), whereas the power supply
to the controller is done by supplying 12 VDC
(+10%/-15%) power to the "+VIN" and "GND" ter-
minals of the remote control.
The Smart series of room temperature controllers
have 5 inputs:
n
ID1
n
ID2
n
NTC1
n
NTC2
n
AN3/NTC3
Three analogue inputs, for connecting up to three
NTC room sensors located outside the ATR Smart
controller or a remote contact 0/10 (AN3/NTC3
input), and two digital inputs, one of which is an
ON/OFF input with priority.
To use the room sensors, their settings must be
configured in the "SENSOR SETTINGS" section
(see
‘System configuration’ on page 16
).
There is a potential-free ON/OFF contact (input
ID1) between the terminals "ID1" and "IDC1". This
ON/OFF contact always has priority over the set-
point, switching times calendar and general
ON/OFF set on the remote control. Input ID1 is
supplied as standard with a jumper that must be
removed to remotely control the contact.
M1
M2
4
3
2
1
+VIN GND
A+
B-
M1
14
13
12
11
10
9
8
7
6
5
ID1
GND
ID2
GND NTC1 AGND NTC2 AGND AN3/ AGND
M2
TF
16
15
NTC4 AGND
TF
Fig. 34: Electrical connection ATR-Smart-Basic
TF: Temperature sensor
Ethernet
NTC
1 2 3 4
1
2
3
4
5
6
7
8
9
10
M1
M2
4
3
2
1
+VIN GND
A+
B-
M1
10
9
8
7
6
5
4
3
2
1
ID1
GND
ID2
GND NTC1 AGND NTC2 AGND AN3/
NTC3
AGND
M2
Fig. 35: Electrical connection ATR-Smart-Web
37