SMA PT100M-NR - Manual (Page 10)

Installation and Electrical Connection SMA Solar Technology AG
10 PT100MNR-IEN083510 Installation Guide
4.6 Connecting the Sensor to the Sunny Boy Control Plus
The sensor is connected to the analog input port (ANALOG IN) of the Sunny Boy Control Plus using
a 2 or 4-wire system.
4-wire system
The AIN-7 and AIN-8 analog input ports have been configured for a 4-wire system with PT100
resistance. The supply currents required for this are provided by the Sunny Boy Control Plus. The
sensor connection wires are duplicated in the immediate vicinity of the sensor.
2-wire system
Protect the connection interfaces against weather conditions.
When extending the sensor cable, protect the connection interface against weather
conditions (e.g. by using a junction box or terminal box).
Connecting the sensors using a connection terminal block
To connect the sensors to the Sunny Boy Control Plus, use the 25-pin connection terminal
block (see section 8 "Accessories" (page 13)).
Connecting the PT100 module temperature sensor to "AIN-7" in a 4-wire system
Original wire - red PIN 11 (PT100-I1+)
Duplicated wire - red PIN 9 (AIN-7+)
Duplicated wire - white PIN 20 (AIN-7-)
Original wire - white PIN 22 (PT100-I1-)
Connecting the PT100 module temperature sensor to "AIN-8" in a 4-wire system
Original wire - red PIN 12 (PT100-I2+)
Duplicated wire - red PIN 10 (AIN-8+)
Duplicated wire - white PIN 21 (AIN-8-)
Original wire - white PIN 23 (PT100-I2-)
Connecting the PT100 module temperature sensor to "AIN-7" in a 2-wire system
Red Bridge PIN 9 (AIN-7+) with PIN 11 (PT100-I1+)
White Bridge PIN 20 (AIN-7-) and PIN 22 (PT100-I1-)
Connecting the PT100 module temperature sensor to "AIN-8" in a 2-wire system
Red Bridge PIN 10 (AIN-8+) with PIN 12
(PT100-I2+)
White Bridge PIN 21 (AIN-8-) with PIN 23 (PT100-I2-)