PAGE 14 1010/2020 INSTALLATION AND PROGRAMMING MANUAL
COPYRIGHT © 2000, NOTIFIER INERTIA PTY LTD
LOOP WIRING SPECIFICATION
EXPLANATION OF LOOP BOARDS.
The LIB-200A is a 1-loop board for the 1010 & 2020 panel and can support 99 detectors and 99
modules. The field wiring is electrically isolated from the rest of the system so that any two-ground
faults on separate loops will not cause invalid replies from devices. A short to any other system
circuit will not cause communication loss. The LIB-200A has an earth fault detection circuit with
selectable high/low sensitivity and isolate. The LIB-200A has two LED’s; yellow displays earth fault
and red indicates alarm condition.
The LIB-400 is a two Loop version, and has the same features as the LIB-200A,
LOOP WIRING SPECIFICATION
The recommended wiring to be used is two core twisted pair, .75mm
2
minimum.
Style 4. (Loop does not return to the panel)
Port A, (Channel A) 3800M maximum, 50 Ohms resistance maximum.
Port B, (Channel B) 3800M maximum, 50 Ohms resistance maximum
Style 6. (Closed loop, returning to panel)
Total Loop, 3800M maximum, 50 Ohms resistance maximum.
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