Ziton ZP3, Installation Operation & Maintenance

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ZP3 Fire Control Panel
Field Wiring
ZP3 Fire Control Panel Manual
Page 5 - 4 UD1160.5 Iss 6 (25/02/2005)
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5.3 The Z-Loop
5.3.1 Z-Loop Wiring
The addressable Z-Loop can be wired as a class-A return loop, or as class-B single direction
wiring, with spurs. Loop length can be up to 3000 metres, depending upon the type, quantity
and location of devices attached, see the Z-loop parameters in section 5.3.3.
When wired in class-B single direction format, then the loop terminals must be connected
(+)in to (+)out and (-)in to (-)out.
The loop is monitored for open and short circuit. Unused loops must be terminated (+)in to
(+)out and (-)in to (-)out.