Simplex 4006-9101, Technical Manual, Page: 29 / 78

Chapter 2. Installation and System Checkout
2-11
Remote Annunciator Wiring
• All wiring must be 18 AWG (min.) to 12 AWG (max.),
twisted pair or shielded twisted pair.
• Conductors must test free of all grounds and stray volt-
ages before connection to appliances, devices, or panel.
• All wiring is supervised and power-limited.
• Refer to instructions packed with remote annunciator
modules for connection details to each module.
• Remote annunciators require power and communica-
tions wiring.
• For “bus-style” wiring (see figure), maximum wiring
limit is 4, 000 feet.
-
Maximum wiring capacitance is 0.58µF total,
wire-to-wire plus wire-to-shield.
- Attach 733-974 (100 ohm, 1/2W) resistor as shown
for line matching. See Note A in figure below. Wire
remote devices “daisy-chain” style, using in/out
terminals on each device.
• For “T-Tap” style wiring, total cable limit is 10,000 feet,
2,500 feet to the furthest device.
-
Maximum wiring capacitance is .58uF total, wire-
to-wire plus wire-to-shield.
- Attach 733-974 (100 ohm, 1/2W) resistor (see Note
A in figure) for line matching.
• Shielded wire is not required for most installations. If
communications wiring is not in conduit with strobes or
voice speaker circuits, shielded wiring is not required.
Use shielded wiring if remote annunciator wiring shares
a conduit with these signals. Terminate shield to 0V
(Aux 24V Neg.) or to chassis.
• If wiring is routed outside the building, use of a listed
secondary protector is required. Use Simplex 2081-
9028 or 2081-9044. A protector must be installed at
each building exit/entrance. Each 2081-9028 adds .2
ohms wiring resistance. 2081-9044 adds 6 ohms wiring
resistance. Use of 2081-9044 will greatly reduce wiring
distance.
• Wiring must pass through a ferrite bead. Wrap the wir-
ing twice through the ferrite bead, as shown in
Figure 2-12.
Figure 2-10 Annunciator Wiring Connections
Figure 2-11 Bus Style and T-Tap Wiring
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
TB2
TB1
N2
Comms
-
+
0V Shield
(If Used)
MSB
MSB
RAM RAM
RAM
RAM
RAM
RAM
RAM
T-Tap Style Wiring
Bus Style Wiring
A A
A
RAM = Remote Annunciator Module
MSB = Main System Board
Figure 2-12 Ferrite Bead
Technical Manuals Online! - http://www.tech-man.com