PR electronics 4225 - Block Diagram

4225V100-UK 11
Block diagram
4225



44 43
42
41
24 21 22
34 31
23
f
in
D / A
4225A / 4225C
4225B 4225A / 4225B
4225C
R1
+
R2
CPU
HW
Watchdog
*
VReg
5...17 V
21.6...253 VAC or 19.2...300 VDC
Green
Yellow
Yellow
VBuf
Yellow
Freq.
detector
/
CPU
* > 50 VDC isolation only valid for NPN output
Red
Rsense