<2.
Installation, Wiring and Piping>
2-9
IM 11T03E01-51E
Contact input
MAINT
ALM
FAIL
FUNC
SEL
CONT
FAIL
Contact output
ALARM
Contact output
MAINTENANCE
Contact output
FUNCTION
Contact output
SELECT GAS
Contact output
Power supply
100 to 240 V AC or 24 V DC
Case grounding
terminal
Case grounding
terminal
GD402G /M1 Converter
Isolated 4-20 mA Output
with BRAIN Communication
Isolated 4-20 mA Output
Pressure Transmitter
+
-
+
-
+
-
-
+
+
L
-
N
+
SHIELD
-
GD40
Detector
13
14
15
16
17
18
19
20
21
22
23
24
1
2
12
3
4
5
6
7
8
9
10
11
OUT1
OUT2
SNSR
DET
G
-
+
Case grounding
terminal
Intrinsic safety
Grounding
Class A grounding
*1
*2
Terminal
Indication
Shield
Requirement
Requirement
MAINTENANCE
Contact output
MAINT
Unshielded
ALARM
Contact output
ALM
Unshielded
FAIL
Contact output
FAIL
Unshielded
FUNCTION
Contact output
SPAN
Unshielded
SELECT GAS
Contact output
ZERO
Unshielded
Contact input
CONT IN
UnShielded
Analog output1 ANLG OUT1 Shielded
Analog output2
ANLG OUT2 Shielded
Pressure
transmitter input
Detector input
SNSR PWR
SNSR INP
Shielded
DET INP
SHIELD
Shielded
Supply
L, N, G
Unshielded
Total resistance should not exceed 50 Ω.
Shield should be grounded at one end only.
Maximum load resistance including wire resistance is 600Ω.
When BRAIN communication is used, it is 250 to 550 Ω.
Total resistance should not exceed 50 Ω.
Shield should be grounded at one end only.
Total resistance should not exceed 50 Ω.
Connect shield to SHIELD terminal on converter.
Cable List
*1 Intrinsic safety grounding
GD402V, GD40V; All wiring should comply with Canadian Electrical Code and Local Electrical Codes.
GD402T, GD40T; All wiring should comply with National Electrical Code and ANSI/NFPA 70 and
Local Electrical Codes.
*2 Terminal 12 is connected to the case-grounding terminal.
Figure 2.11
Terminals on the Converter
Summary of Contents for GD402G /M1
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