11
2.3 Description of the main unit terminals
No.
Code
Definition
No.
Code
Definition
1
L/+
Positive pole of power supply
15
RS485+
Positive pole of RS485
2
NC
Null
16
RS485-
Negative pole of RS485
3
N/-
Negative pole of power supply
17
SHLD
Communication shielded
earth
4
NC
Null
18
NC
Null
5
FG
Earth protection
19
NC
Null
6
NC
Null
20
A1
Positive analog output
7
\
\
21
AG
Negative analog output
8
\
\
22
VN
Voltage neutral line
9
I32
Phase C current outgoing line
23
NC
Null
10
I31
Phase C current incoming line
24
V3
Phase C voltage
11
I22
Phase B current outgoing line
25
NC
Null
12
I21
Phase B current incoming line
26
V2
Phase B voltage
13
I12
Phase A current outgoing line
27
NC
Null
14
I11
Phase A current incoming line
28
V1
Phase A voltage