Zeta Alarm Systems.
Classic 2000 Mk II Operation Manual
Revision 1.0
Part # MAN-Z3K-01
Page 10
1.4.8 WiringSpecifications and Requirements
All circuits except AC, System Relays, and battery cables are power limited.
1.4.8.1 General Specifications
The Classic 2000 Mk II should be wired to NEC 760 standards. Induced noise (transfer of elec-
trical energy from one wire to another) can interfere with panel communications or cause false
alarms or device troubles. To avoid induced noise, observe the following guidelines:
Maintain at least ¼” spacing between power limited and non-power limited circuits
Wiring should not cross or rest on the circuit board
Segregate high current output and AC power wiring from SLC and input wiring
Segregate wiring from ZACMs (do not run wire for multiple ZACMs in the same conduit)
Prior to terminating wire at the panel, please verify continuity, and that capacitance and resis-
tance comply with standards set out in section 1.4.8.2.
See the following two sections for the recommended wire for each type of circuit.
Do not use a single multi-conductor cable for the entire panel. Separate wiring as follows:
High Voltage
PSC Terminal TB-1 – L, N, G
Notification Appliance Circuits (NAC)
Terminals 1-16
Signal Line Circuits (SLC)
Terminals A-, A+, B-, B+ on SLC1 through SLC12
Network
Terminals 17-26
Relay Circuits
Terminals 27-32
Do not pull wires from different groups through the same conduit. If you must run them together,
keep the distance as short as possible, and use shielded cable. Route high and low voltages sep-
arately, and do not cross the circuit board with wiring inside the panel enclosure.
Running the wire through ferrite shield beads or wrapping it around a ferrite toroid can also filter
high frequency noise.
1.4.8.2 SLC Wire Specifications
Any wire type may be acceptable (solid, stranded, twisted pair, untwisted, shieldd, unshielded) as
long as it complies with the following specifications:
14 - 20 gauge
Limit of 0.3µF capacitance over entire line (refer to Application Note AN-Z3K-01A for figuring
line capacitance)
Limit of 50 Ohms resistance over entire loop (from panel to farthest point and back)
Complies with NEC standard 760-51 for power limited, fire protective signaling cable
In retro-fit applications, please note:
-
Never run wiring from two different ZACMs in the same conduit.
-
Wiring utilized from original installation must conform to NEC installation standards as well
Maximum loop length depends on wire gauge as shown below:
Wire Gauge (solid)
Solid Distance
Stranded Distance
20
2,400 ft.
2,300 ft
18
3,900 ft.
3,600 ft.
16
6,000 ft.
5,300 ft.
14
9,200 ft.
9,000 ft.
