SilentKnight SD505-6IB User Manual

SILENT KNIGHT

SD505-6IB (6” Isolator Base) Installation Instructions

The SD505-6IB is a 6 inch isolator base that fits underneath the 6 inch detector base.

Class A (Style 7) Configuration

An isolator base is used to isolate a short circuit wiring fault on a Class A (Style 7) SLC loop. Normally if the control panel detects a short on the SLC loop the entire loop is disabled. When isolator modules are used (as shown in Figure 1) and a short, open or ground fault occurs on the SLC loop, it will be detected as a trouble but all the SLC devices will continue to operate.

Class B (Style 4) Configuration

0-50 devices, up to 10Ω per branch

Figure 2: Class B (Style 4) Example

1. If a short occurs at point A (Figure 2), isolator base 1 will activate, isolating SLC devices 2 and 3 from the rest of the loop.

2. If a short occurs at point B (Figure 2), isolator base 2 will activate, isolating SLC devices 5 and 6 from the rest of the loop.

3. If a short occurs at point C (Figure 2), isolator base 3 will activate, isolating SLC devices 8 and 9 from the rest of the loop.

Figure 1: Class A (Style 7) Example

SD505-6IB Specifications

Specification Parameter Rating

Operating Temperature: 32° - 120° F

(0° - 49° C)

Length: 4-7/8”

Dimensions:

Operating Voltage: 32 VDC Battery Current Draw dur-

ing AC loss: SLC Current: 50 uA Max. SLC Loop Resistance: 50Ω

Width 4-7/8” Depth: 7/8”

Alarm/Standby: 92 uA

For indoor use only

P/N 151175

Model SD505-6IB Installation Instructions

Wiring the SD505-6IB

Note: Installation and wiring of this device must be done

in accordance with NFPA 72 and local ordinances.

Important!: All wiring is supervised and power limited. Important!: No more than 256 is olator devices (SD505-

LIM or SD505-6IB) can be used on a SLC loop.

Wiring the SD505-6IB to the SLC Terminals

The SD505-6IB connections for the SLC loop internal and external are the same. Wire as shown in Figure 3 or Figure 4. Notice that “Out Terminals” wire to “In Terminals”.

1. Mount the extension base using the #8 1-1/2 screws through the extension base mounting holes. (See Figure 5.)

2. Wire the SLC loop as shown in Figure 3 or Figure 4.

3. Connect wiring harness to the smoke base as shown in Figure 5.

4. Plug wiring harness into harness connector. Refer to Figure 3 and Figure 5.

5. Attach the smoke base (P/N SD505-6AB) to extension base (P/N 120505) using the #8 1/2”. (See Figure 5.)

Note: Do Not over tighten screws.

Figure 3: Class A (Style 7) Wiring for SLC loop

Figure 4: Class B (Style 4) Wiring for SLC Loop

Figure 5: SD505-6IB Mounting

7550 Meridian Circle

Mounting the SD505-6IB

Maple Grove, MN 55369-4927 612-493-6455

The SD505-6IB mounts on a standard single or double gang electrical switch box.

Follow these steps to mount the SD505-6IB:

2 P/N 151175

P/N 151175B, 12/00