4.3.
Connection and pin assignment
All in puts and out puts are con nec tors, de signed as plug- in screw ter mi nals.
Pin as signment:
1
Power supply DC (+)
14
SSI-Signalinput, Clock (+)
2
Power supply DC (-)
15
SSI-Signalinput, Clock (-)
3
Ground connection
16
SSI-Signalinput, Data (+)
4
Analog output 0/2-10 V (+)
17
SSI-Signalinput, Data (-)
5
Analog output 0/4-20 mA (+)
18
SSI-Signalinput, GND (0 V)
6
Analog output, GND (-)
19
Ground connection
7
Option RS485, A (+)
20 -
n.c.
8
Option RS485, B (-)
23
n.c.
9
Option RS485, GND
24
Digital user input 1
10/11
Alarm (relay) output 1
25
Digital user input 2
12/13
Alarm (relay) output 2
26
Digital GND
ERMA-Electronic GmbH
9
4. Electrical connections
P
LED3
LED2
LED1
ERMA-METER
1
2
5
7
8
9
6
4
3
11 12
10
13
14
15
26 25 24 23 22
21 20 19 18 17 16
analog output
alarm 1 alarm 2
+
-
signal input
digital
inputs
RS 485
n.c.