SMA PT100U-NR - Manual (Page 13)

SMA Solar Technology AG Installation and Electrical Connection
Installation Guide PT100UNR-IEN083510 13
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.
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.
2-wire system
Connecting the sensors using a connection terminal block
To connect to the Sunny Boy Control Plus, use the 25-pin connection terminal block
(see section 8 "Accessories" (page 17)).
Connecting the PT100 temperature sensor to "AIN-7" in a 4-wire system
I+ at the sensor PIN 11 (PT100-I1+)
V+ at the sensor PIN 9 (AIN-7+)
V- at the sensor PIN 20 (AIN-7-)
I- at the sensor PIN 22 (PT100-I1-)
Connecting the PT100 temperature sensor to "AIN-8" in a 4-wire system
I+ at the sensor PIN 12 (PT100-I2+)
V+ at the sensor PIN 10 (AIN-8+)
V- at the sensor PIN 21 (AIN-8-)
I- at the sensor PIN 23 (PT100-I2-)
Connecting the PT100 temperature sensor to "AIN-7" in a 2-wire system
V+ at the sensor Bridge PIN 9 (AIN-7+) with PIN 11 (PT100-I1+)
V- at the sensor Bridge PIN 20 (AIN-7-) and PIN 22 (PT100-I1-)
Connecting the PT100 temperature sensor to "AIN-8" in a 2-wire system
V+ at the sensor Bridge PIN 10 (AIN-8+) with PIN 12 (PT100-I2+)
V- at the sensor Bridge PIN 21 (AIN-8-) with PIN 23 (PT100-I2-)