Appendix A: ZP wiring guide
ZP3 Fire Control Panel Installation, Commissioning, and Maintenance Manual
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management systems. Each port usually connects to only one piece of
equipment.
1. Cable requires nine conductors plus a shield. The cable is terminated at each
end to a D connector, either 9-pin or 25-pin depending upon the equipment.
2. The shield must be insulated, and earthed only at the point shown on the
system installation drawing.
3. No cables or conductors for other services must be run inside the same
shielding.
4. RS-232 cabling is normally specified for a maximum length of 10 m.
5. RS-232 cabling can be used at up to 100 m cable length, at a slower
communication baud rate. This does not affect the performance of the
system.
RS-485 ports are used for connections between ZP panels and ZP equipment.
For example, between networking panels in a multiple-panel system, from a
panel to a remote display unit, to an intelligent mimic panel, etc. RS-485 is
sometimes used to connect to computers.
A single circuit may interconnect several pieces of equipment.
1. Cable requires two conductors plus a shield. The cable is terminated at each
end to a 9-pin D connector, or onto terminals, depending upon the equipment.
2. The shield must be insulated, and connected only at the points shown on the
system installation drawing. If the shield is not insulated, and could be
earthed, then a three-conductor cable is required. The third wire serves the
function of the screen.
3. Only cable specifically manufactured for RS-485 should be used. This is an
ultra-low capacitance cable with capacitance of 0.04 µf/1000 m.
4. The conductor size, when using shielded cable with a capacitance of
0.04 µf/1000 metres, should be as follows:
0.25 mm² - up to 1,000 m
0.50 mm² - 1,000 to 2,000 m
5. No cables or conductors for other services must be run inside the same
shielding.
6. The maximum communication distance for RS-485 cabling is 2,000 m. If
greater distances are required, please contact Ziton.
7. Where wiring connects to several panels or devices, it must be daisy-chained
from point to point (not connected in a star pattern).
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