SMA Sunny Boy Control - Manual (Page 111)

Sunny Boy Control
SMA Technologie AG
User Manual SUNBC-14:NE0206 107
7.3.2 Digital Input Channels (DIN-1–DIN-8)
The digital input channels are DIN 43 864-compliant S0 interfaces. This standard
defines the current interface for impulse transmission between an energy (pulse) meter
and an electric consumption meter.
b) Break contact
D+24 V
a) Make contact
DIN-8
D+24 V
DIN-1
25
17
19
18
17
6
5
1
DIGIT
AL
IN/OUT
Fig. 7.15: Digital input channel application
The digital input channels can be configured as pulse channels or as simple switching
channels. DIN1 – DIN8 are switched to DGND for breaking contact (off) or to
D+24V for making contact (on).
The power supplied to the digital input channels by D+24V is limited
to a total of 0.5 A and is protected against overload and short circuits.
If the D+24V power supply is overloaded or short-circuited, the diagnostic channel
“+Diag DOUT/IN” displays “Error”.