Simtronics GD1 MK3 - Page 13

GD1 Page 13 of 76 850-816926-EN R06
Wiring overview Transmitter Junction Box:
System
cable
Terminal
Cable from GD1
instrument
Wire color
Transmitter Junction Box
Com. cable
+24 VDC
1
White
+24 VDC
+24 VDC
0 V Return
(GND)
2
Brown
0 V Return
0 V Return
(GND)
3
Green
Ethernet®
4
Yellow
Ethernet®
5
Black
Ethernet®
6
Violet
Ethernet®
Signal to
control
room
7
Blue
4-20 mA primary gas value and
HART®.
Default is source configuration
with 4-20 mA measured
between terminals 7 and 2 (0V).
For sink configuration 4-20 mA
is measured between terminals
7 and 1 (24 V).
8
Red
Secondary current loop:
Relative transmission
(configurable).
PE
-
Earth
11*
Gray
TxRx Com 1 from Rx
TxRx Com 1
12*
Pink
TxRx Com 2 from Rx
TxRx Com 2
PE
-
Earth
Note! Instrument damage can occur if incorrectly connected.
* Wires to terminal 11 and 12 shall be twisted.