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000566AG
5 - Installation
D
escription of communication and control signal terminal blocks
21
22
Description of communication and control signal terminal block
21
:
Terminal
name
Terminal
number
Description
WIND
1, 3
External backup command
REM
2, 4
Remote external ON/OFF command
+5V
5, 6
Auxiliary 5V positive
RS485
M-B
7, 8
-T/R of the RS485 M-B (ModBus) communication line
9, 10
+T/R of the RS485 M-B (ModBus) communication line
11, 12
Reference (RTN) of the RS485 M-B (ModBus) communication line
RS485
PC
13
-T/R of the RS485 PC communication line
15
+T/R of the RS485 PC communication line
17
Reference (RTN) of the RS485 PC communication line
RS485
METER
14
-T/R of the RS485 METER communication line
16
+T/R of the RS485 METER communication line
18
Reference (RTN) of the RS485 METER communication line
19, 20
Ground terminal
Description of multifunctional relay terminal block
22
:
Terminal
name
Terminal
number
Description
ALARM
N.C.
"Normally closed" terminal of multifunctional relay
C
"Common" terminal of multifunctional relay
N.O.
"Normally open" terminal of multifunctional relay
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