Wiring Specifications - Honeywell 6820 Manual

Control Panel Installation

4.3 Wiring Specifications

Induced noise (transfer of electrical energy from one wire to another) can interfere with telephone communication or cause false alarms. To
avoid induced noise, follow these guidelines:
• Isolate input wiring from high current output and power wiring. Do not pull one multi-conductor cable for the entire panel. Instead,
separate the wiring as follows:
High voltage
SLC loops
POTS reporting input/output
Notification circuits
SBUS
Relay circuits
• Do not pull wires from different groups through the same conduit. If you must run them together, do so for as short a distance as
possible or use shielded cable. Connect the shield to earth ground at the panel. You must route high and low voltages separately.
• Route the wiring around the inside perimeter of the cabinet. It should not cross the circuit board where it could induce noise into the
sensitive microelectronics or pick up unwanted RF noise from the high speed circuits. See Figure 4.2 for an example.
• High frequency noise, such as that produced by the inductive reactance of a speaker or bell, can also be reduced by running the wire
through ferrite shield beads or by wrapping it around a ferrite toroid.
0.25" spacing must be
maintained between each of
these circuit types, as well as
between power-limited and non-
power-limited circuits.
28
AC power terminal
SLC In/Out Terminals
Phone line circuits, Ring Tip Telco, Phone Terminals
NACs 1-6
SBUS1 In/Out Terminals, Cellular communication
Trouble, Relay 1, Relay 2 Terminals
AC power
SLC
battery
Figure 4.3 Wire Routing Example for 6820
6820/EVS Manual — P/N LS10144-001SK-E:E 4/6/2022
NAC/aux power circuits
relay circuits
SBUS
phone lines
battery
Wiring Specifications