Siemens FS720 Mounting & Installation page 61

6.3.2.6 X11 / X21 detector line loop 1 (module 2/3)
Pin Designation
4 LOOP1_2–
3 LOOP1_2+
2 LOOP1_1–
1 LOOP1_1+
6.3.2.7 X12 / X22 detector line loop 2 (module 2/3)
Pin Designation
4 LOOP1_2–
3 LOOP1_2+
2 LOOP1_1–
1 LOOP1_1+
Building Technologies
Fire Safety
Description
↑ Loop 1 / ↑ stub 2 (–)
Loop 1 / stub 2 (+)
Loop 1 / stub 1 (–)
Loop 1 / stub 1 (+)
Admissible cable cross-section: 0.2...1.5 mm²
Loop number without loop extension
1
X11 / X21
LOOP1_2- -
LOOP1_2+ +
LOOP1_1- -
LOOP1_1+ +
● The technical term LOOP 1 applies to both loops on connectors X11 and X21.
● One loop or two stubs can be connected.
Description
↑ Loop 1 / ↑ stub 2 (–)
Loop 1 / stub 2 (+)
Loop 1 / stub 1 (–)
Loop 1 / stub 1 (+)
Admissible cable cross-section: 0.2...1.5 mm²
Loop number without loop extension
1
X12 / X22
-
LOOP2_2-
LOOP2_2+
+
LOOP2_1- -
LOOP2_1+
+
● The technical term LOOP 2 applies to both ↑ loops on connectors X12 and
X22.
● One loop or two stubs can be connected.
Installing, exchanging and connecting modules
X11
Connection – 1st Loop
Connection + 1st Loop
Connection - 1st Loop
Connection + 1st Loop
4
3
2
1
X12
Connection – 2nd Loop
Connection + 2nd Loop
Connection – 2nd Loop
Connection + 2nd Loop
4
3
2
1
Periphery board (4 loops)
X21
1
Connection – 3rd Loop
Connection + 3rd Loop
Connection - 3rd Loop
Connection + 3rd Loop
X22
1
Connection – 4th Loop
Connection + 4th Loop
Connection – 4th Loop
Connection + 4th Loop
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2015-12-15
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