SMA Sunny Boy Control - Manual (Page 107)

Sunny Boy Control
SMA Technologie AG
User Manual SUNBC-14:NE0206 103
7.2.2 Temperature Sensing (AIN-7 & AIN-8)
The analog input channels AIN-7 and AIN-8 are designed for four-conductor tem-
perature sensing using PT100 resistors. The necessary power is delivered by the
Sunny Boy Control Plus. For temperature input channel AIN-7, the connections are
made to PT100-I1+, AIN-7+, PT100-I1-, and AIN-7-. For AIN-8, the connections are
made to PT-100-I2+, AIN-8+, PT100-I2-, and AIN-8- (refer to Fig. 7.10).
ANAL
OG
IN
ANAL
OG
IN
ANAL
OG
IN
ANAL
OG
IN
PIN
1
9
10
21
22
23
25
a) Temperature measuring with AIN-7 b) Temperature measuring with AIN-8
AIN-7+
20
11
12
PT100-I1+
AIN-7-
PT100-I1-
PIN PIN
1
9
10
21
22
23
25
AIN-8+
20
11
12
PT100-I2+
AIN-8-
PT100-I2-
PT100
PT100
Fig. 7.10: Connections for temperature input channels AIN-7 and AIN-8