Connecting The Line Tester To The Line - Siemens FDUL221 Technical Manual

6.3 Connecting the line tester to the line

Building Technologies
Fire Safety
NOTICE
The detector line is ready during testing.
Connecting the FDUL221 line tester incorrectly may damage the hardware.
Detector lines, line sections or individual line devices to be tested must not be
simultaneously connected to the control panel.
Observe the polarity of the connections when connecting the FDUL221 line
tester.
You will find more detailed information in the fire detection system documentation.
Connection for loop
The lines to be checked must be disconnected from the control panel while
testing is taking place.
1. Check that the lines are disconnected from the control panel and ensure that
they remain disconnected during testing.
2. Connect the ground wire and connect the other end with the ground potential.
3. To detect shielding errors, connect the shielding to the ground wire.
For a loop:
1. Connect both ends of the line to the FDUL221 line tester.
2. Connect the ends of the feed line to line 'A'.
3. Connect the ends of the return line to line 'B'.
For a stub or a single line device:
Connect the ends of the line to line 'A'.
Operation
Connecting the line tester to the line
Connection for stub
6
47
008250_i_en_--
2013-08-15