Endress+Hauser SS2100i-2 - Page 33

SS2100i-2 TDLAS Gas Analyzer Operating Instructions
Endress+Hauser 33
NOTICE
 The 4-20 mA current loop output is factory set to source current. To change the 4-20 mA current loop output
from source to sink, see To change the 4-20 mA board from source to sink → .
The relays for the alarms are configured to be fail-safe (or normally energized) so the dry contacts will open in the
event of power loss. Thus, the alarms are wired to be normally closed (NC) when the analyzer is running.
Consult the wiring diagrams in Wiring diagrams → . All work should be performed by personnel qualified in
electrical installation.
CAUTION
 Certified compound barrier seal glands and cables shall be used where appropriate in compliance with local
regulations.
 Hazardous voltage and risk of electric shock. Turn off and lock out system power before opening the electronics
enclosure and making any connections.
4.12.1 To connect the signal and alarm cables
1. Open the enclosure cover according to the procedure under To open an analyzer enclosure cover → to gain
access to the field interface terminal block.
2. Install appropriate compound barrier or seal type glands into the three M25 access ports on the bottom right of
the electronics enclosure. Refer to Application of gland lubricant → Application of gland lubricant .
3. Pull the cables for the alarm outputs and validation request input through the first (from left) gland, the cables
for the 4-20 mA AI and 4-20 mA AO through the second gland and the cable for serial or Ethernet
communication through the third gland and into the enclosure.
4. Strip back the jacket and insulation of the 4 to 20 mA AI, 4 to 20 mA AO and serial or Ethernet cables just
enough to connect to the terminals of block (X4).
5. Connect the 4-20 mA AI, 4-20 mA AO, and serial or Ethernet wires to the appropriate terminals. See below.
Terminal
Description
D Pin #
Wire Color Cat5(e)
1
Serial Rx or TD–
1
Blue
2
Serial Tx or TD+
2
Brown
3
N/C
1
4
N/C
5
4-20 mA AO Ch. A (+)
6
4-20 mA AO Ch. A (–)
7
4-20 mA AO Ch. B (+)
8
4-20 mA AO Ch. B (–)
9
4-20 mA AI (+)
10
4-20 mA AI (–)
RJ45 Pin #
Wire Color (T568B) Cat5(e)
11
Ethernet Tx+ (BI_DA+)
1
White/Orange
12
Ethernet Tx– (BI_DA–)
2
Orange
13
Ethernet Rx+ (BI_DB+)
3
White/Green
14
Ethernet Rx– (BI_DB–)
6
Green
G
Serial Shield Ground
G
4-20 mA Ch. A Shield GND
G
4-20 mA Ch. B Shield GND
Terminal block (X4) input/output signal connections
1
“N/C” means no connection.