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1. Calculate the size of the battery required for the application. Refer to Appendix A
2. Connect two 12-volt, series-wired batteries of the required ampere-hour (AH)
2-8
SIGNALING LINE CIRCUIT
The signaling line circuit (SLC) is the communications path between the ARIES Control Unit and
the SmartOne field devices. The SLC can be wired to meet NFPA 72 Class-A, Style-6 and -7 or
Class-B, Style-4 requirements.
The SLC can accommodate any combination of up to 255 devices, which include SmartOne
automatic initiating devices, monitor modules, relay modules, and control modules.
2-8.1
SLC Wiring Requirements
All SLC wiring must be twisted, unshielded, low-capacitance, fire-alarm-system wire.
Refer to Appendix B for recommended wire types.
2-8.1.1
P/N 06-236530-001
for the proper procedure.
capacity to printed-circuit board Terminals TB3 using the battery cable. See
Figure 2-9.
Battery Jumper
+
-
-
12-V Battery
12-V Battery
Single-Battery Installation
Battery Jumper
Typical (by installer)
+
-
-
12-V Battery
12-V Battery
+
-
-
12-V Battery
12-V Battery
Dual-Battery Installation
Figure 2-9. Standby Battery Connections
CLASS-B, STYLE-4 WIRING REQUIREMENTS
The total wiring resistance from the control unit to the end of each individual
branch line cannot exceed 40 ohms. Use the following procedure to determine the
wiring resistance.
1. Short the ends of each branch line one at a time. Measure the resistance
from the terminating points at the control unit to the end of the branch line.
See Figure 2-10.
2. Remove
the
measurement.
TB3
+
+
+
Battery Cables
TB3
+
+
+
Battery Cables
Typical (by installer)
+
Note:
Locate all batteries in a common
battery cabinet or in close-coupled
battery cabinets with all battery
cables in conduit.
shorting
jumper
after
2-13
each
branch-line
resistance
August 2013
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