7.3.3.2 Wiring and Configuration for STAI or SHRA Retrofits
The following table provides field wiring and channel comparisons for retrofitting an existing STAI or SHRA with a SUAA
terminal board to provide current or voltage inputs, and two current outputs. The YUAA and SUAA are not isolated as on the
prior analog input module (YAIC).
Attention
HART inputs are always referenced to ground, however mA inputs allow either
floating or grounded style.
STAI
Screw
STAI
Name
Channel
SUAA
screw
SUAA
Name
Use
1 P24V 1 1
PWR_RET PWR Out if internally powered not used if externally powered
2 20mA 1 3 IO+
mA In (Mode set from ToolboxST for YUAA)
3 VDC 1 3 IO+
V In (Mode set from ToolboxST for YUAA)
4 Ret 1 5 IO-
Ground for 3 wire devices Ground for externally powered 2 wire Ground for
externally powered 4 wire Not used for 2 wire internally powered 2nd AI for
special-case internally powered 4-wire device
5 P24V 2 2
PWR_RET
Same as SUAA screw 1
6 20mA 2 4 IO+ Same as SUAA screw 3
7 VDC 2 4 IO+ Same as SUAA screw 3
8 Ret 2 6 IO- Same as SUAA screw 5
9 P24V 3 7
PWR_RET
Same as SUAA screw 1
10 20mA 3 9 IO+ Same as SUAA screw 3
11 VDC 3 9 IO+ Same as SUAA screw 3
12 Ret 3 11 IO- Same as SUAA screw 5
13 P24V 4 8
PWR_RET
Same as SUAA screw 1
14 20mA 4 10 IO+ Same as SUAA screw 3
15 VDC 4 10 IO+ Same as SUAA screw 3
16 Ret 4 12 IO- Same as SUAA screw 5
17 P24V 5 13
PWR_RET
Same as SUAA screw 1
18 20mA 5 15 IO+ Same as SUAA screw 3
19 VDC 5 15 IO+ Same as SUAA screw 3
20 Ret 5 17 IO- Same as SUAA screw 5
21 P24V 6 14
PWR_RET
Same as SUAA screw 1
22 20mA 6 16 IO+ Same as SUAA screw 3
23 VDC 6 16 IO+ Same as SUAA screw 3
24 Ret 6 18 IO- Same as SUAA screw 5
25 P24V 7 19
PWR_RET
Same as SUAA screw 1
26 20mA 7 21 IO+ Same as SUAA screw 3
27 VDC
7 21 IO+ Same as SUAA screw 3
28 Ret 7 23 IO- Same as SUAA screw 5
29 P24V 8 20 PWR_RET Same as SUAA screw 1
30 20mA 8 22 IO+ Same as SUAA screw 3
31 VDC 8 22 IO+ Same as SUAA screw 3
32 Ret 8 24 IO- Same as SUAA screw 5
33 P24V 9 25 PWR_RET Same as SUAA screw 1
34 20mA 9 27 IO+ Same as SUAA screw 3
35 VDC 9 27 IO+ Same as SUAA screw 3
36 Ret 9 29 IO- Same as SUAA screw 5
37 P24V 10 26
PWR_RET
Same as SUAA screw 1
38 20mA 10 28 IO+ Same as SUAA screw 3
39 VDC 10 28 IO+ Same as SUAA screw 3
180 GEH-6855_Vol_II GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
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