System Sensor SC-6 User Manual

INSTALLATION AND MAINTENANCE INSTRUCTIONS

3825 Ohio Avenue, St. Charles, Illinois 60174

SC-6 Six Supervised Control Module

SPECIFICATIONS

Normal Operating Voltage: 15-32VDC Stand-By Current: 2.25 mA Alarm Current: 35 mA (assumes all six relays have been switched once and all six LEDs solid on) Temperature Range: 32°F to 120°F (0°C to 49°C); -10°C to 55°C (For EN54 application only) Humidity: 10 to 93% Non-condensing Dimensions: 6.8˝H x 5.8˝W x 1.25˝D Accessories: CH-6 Chassis; BB-2 Cabinet; BB-6 Cabinet Wire Gauge: 12-18 AWG Maximum NAC Circuit Line Loss: 4 VDC Power Rating Per Circuit (Speakers): 50W @ 70.7VAC 50W @ 25VAC MaxNAC Current Ratings: For class B wiring system, 3A For class A wiring system, 2A

TABLE 1: SHORT CIRCUIT PROTECTION - UL 864 9TH EDITION REQUIREMENTS

NOTICE TO USERS, INSTALLERS, AUTHORITIES HAVING JURISDICTION, AND OTHER INVOLVED PARTIES

This product incorporates field-programmable software. In order for the product to comply with requirements in the Standard for Control Units and Accessories for Fire Alarm Systems, UL 864, certain programming features or options must be limited to specific values or not used at all as indicated below.

PROGRAM FEATURE OR OPTION

Disabling short circuit protection when a single power supply is shared by multiple NACs

BEFORE INSTALLING

This information is included as a quick reference installation guide. Refer to the appropriate control panel installation manual for detailed system information. If the modules will be installed in an existing operational system, inform the operator and local authority that the system will be temporarily out of service. Disconnect the power to the control panel before installing the modules. This system contains static sensitive components. Always ground yourself with a proper wrist strap before handling any circuits so that static charges are removed from the body. The housing cabinet should be metallic and suitably grounded.

NOTICE: This manual should be left with the owner/user of this equipment.

GENERAL DESCRIPTION

The SC-6 Six Supervised Control Module is intended for use in an intelligent alarm system. Each module is intended for switching applications involving AC, DC, or audio, which require wiring supervision. A common SLC input is used for all modules. Each module has its own address. A pair of rotary code switches is used to set the address of the first module from 01 to 94. The remaining modules are automatically assigned to the next five higher addresses. Provisions are included for disabling a maximum of three unused modules to release the addresses to be used elsewhere. Each module also has panel controlled green LED indicators. The panel can cause the LEDs to blink, latch on, or latch off.

In order to synchronize strobes, horn/strobes, and speaker/strobes, a SYNC-1 accessory card (sold separately) must be used with the SC-6. See the SYNC-1 installation manual for details on how to install.

Each module has terminals for connection to an external supply circuit for powering devices on its NAC.

Each supply must be power limited and its voltage/current limits must be at or below those specified.

There is a short circuit protection monitor for each module. This is provided to protect the external power supply against short circuit conditions on the NAC.

PERMITTED IN UL 864 (Y/N)

No Enable or Disable short

POSSIBLE SETTINGS SETTINGS PERMITTED IN UL 864

circuit protection

INCLUDED:

Shipped on Board:

(1) Small shunt in A/B select position

(Shipped in Class B position, remove shunt for Class A)

(6) Large shunts on Enable Power Supply Monitors

(6) Large shunts on Disable Short Circuit Protection

(3) Large shunts on Sync Generator

(7) 1×4 Terminal

(4) Machine Screws

(2) Nuts

(1) Long Power Supply Jumper

Enable short circuit protection when a single power supply is shared by multiple NACs. Short circuit protection can be disabled only when a power supply is not shared by multiple NACs.

(2) 11/4″ (32mm)

Blocks

(5) Short Power

800/736-7672, FAX: 630/377-6495

www.systemsensor.com

Stand off’s

Supply Jumpers

(15) Large Shunts

(2) Small Shunts

(6) 47k Ohm

End of Line Resistors

(2) EOL Relay

Connector Assemblies

C0202-01

I56-1802-012

D500-50-00 1 I56-1802-012

BACKBOX MOUNTING HOLES

COMPATIBILITY REQUIREMENTS

6 7 8

7 8

BASE ADDRESS

ADDRESS

DISABLE

NONE

ONE

TWO

THREE

6 7 8

7 8

BASE ADDRESS

ADDRESS

DISABLE

NONE

ONE

TWO

THREE

To ensure proper operation, this module shall be connected to a listed compatible control panel.

COMPONENTS

Following are descriptions of the SC-6 mounting frameworks. There are two mounting options for SC-6 modules:

• Up to six SC-6 modules can be installed on a CH-6 in a BB-6 cabinet.

• One or two SC-6 modules can be installed in a BB-2 cabinet.

CHASSIS

The CH-6 chassis is used to mount SC-6 modules in a BB-6 cabinet. It accommodates up to six SC-6 modules in a single cabinet row three modules wide and two modules deep.

The BB-2 cabinet has a built-in chassis that will accommodate one or two SC-6 modules.

FIGURE 1: CH-6 CHASSIS

FIGURE 3: TYPICAL MOUNTING HOLE LOCATIONS

FIGURE 4: MOUNTING THE CH-6 CHASSIS

MOUNT WITH

SELF-THREADING SCREWS

TO BACK OF CABINET

C0234-00

C0206-00

FIGURE 2: BB-2 CABINET

The front SC-6 module positions of each chassis are offset below the rear SC-6 module positions so that all of the status indicators are visible.

CABINETS

A BB-6 cabinet will house the CH-6 chassis with up to six SC-6 modules installed on it. Refer to cabinet installation documents for dimensions.

The BB-2 cabinet houses one or two SC-6 modules on the internal chassis that is part of the cabinet. Refer to cabinet installation documents for dimensions.

INSTALLATION STEPS

1. Cabinet Mounting

In a clean, dry area, mount the backbox using the four holes provided in

the back surface of the cabinet (Figure 3).

2. Chassis Installation

The CH-6 chassis is mounted in the BB-6 cabinet. It is shipped with two

self-threading screws, which are used to fasten the chassis to the back wall of the cabinet (see Figure 4).

The BB-2 cabinet comes with the chassis already installed, so no mounting is necessary.

3. Module Installation

There are two methods for installing a module in the rear position of a

chassis. Method one is for installation of a rear module only, when no module will be installed in front of it. Refer to Figure 5 for instructions. Method two is for installation of a rear module when another module will be installed in the chassis position in front of it. Refer to Figures 6a and 6b for method two. All necessary screws and standoffs are supplied with the modules.

FIGURE 5: INSTALLATION OF REAR MODULE ONLY, METHOD ONE

C0235-00

C0236-00

Step 1: Insert the bottom of the SC-6 module down into a rear slot on the

chassis.

Step 2: Carefully swing the upper edge of the board back towards the back of

the chassis until it touches the two standoffs.

Step 3: Align two 4-40 screws with the two standoffs and tighten.

Step 4: Address and wire the modules according to the instructions in this

manual.

D500-50-00 2 I56-1802-012

The steps in Figures 6a and 6b describe and illustrate module installation

when the rear chassis position and the position in front of it will be filled. Front position installation is possible only if the rear position is filled with another module.

FIGURE 6A: INSTALLATION OF SC-6 MODULE IN A REAR CHASSIS POSITION, METHOD TWO

Step 1: Insert the bottom edge of the SC-6 module down into a rear slot of

the chassis.

Step 2: Carefully swing the upper edge of the board towards the back of the

chassis until it touches the short standoff attached to the chassis.

Step 3: Align the long standoff with the short standoff and tighten.

FIGURE 6B: INSTALLATION OF SC-6 MODULE IN FRONT CHASSIS POSITION

Step 1: Insert the bottom edge of the SC-6 module down into a front slot of

the chassis.

Step 2: Carefully swing the upper edge of the board towards the back of the

chassis until it touches the 11/4˝ (31.75mm) standoffs installed on the rear module.

Step 3: Align two 4-40 screws with the two standoffs and tighten.

Step 4: Address and wire the modules according to the instructions in this

manual.

WIRING

NOTE: All wiring must conform to applicable local codes, ordinances, and regulations.

1. Install module wiring in accordance with the job drawings and appropriate wiring diagrams.

2. All wiring to the SC-6 is done via terminal blocks. In order to properly make electrical connections strip approximately 1/4˝ of insulation from the end of wire, sliding the bare end of the wire under the clamping plate screw.

3. Set the address on the modules per the job drawing. Use the rotary code switches to set the address of the first module (between 01 and 94).

In Class B operation, the remaining modules are automatically assigned to the next five higher addresses. For example, if the base address switch is set to 28, the next five modules will be addressed to 29, 30, 31, 32, and 33.

In Class A operation, a maximum of three Class A circuits are available. For example, if the base address switch is set to 28, 30 and 32 will be automatically assigned to the modules while 29, 31 and 33 are available to be used for other modules on the SLC. For Class A and B operation, DO NOT set the lowest address above 94, as the other modules will be assigned to nonexistent addresses.

C0237-00

C0225-00

4. A shunt is provided to disable a maximum of three unused modules (see Figure 7). Modules are disabled from the highest address and work downward. If two modules are disabled, the lowest four addresses will be functional, while the highest two will be disabled. For example, if the shunt for Address Disable is placed on “two” and the base address switch is set to 28, the modules will be assigned to 28, 29, 30 and 31, disabling the higher two positions.

NOTE: In Class A operation, placing the small shunt on “disable 3” will disable all three addresses. Placing the small shunt on “disable 2” will disable two out of the three addresses. For example, if the address switch is set to 28 and the small shunt is placed on “disable 2”, addresses 30 and 32 will be disabled while address 28 will be enabled.

5. There is a short circuit protection option for each address. The board is shipped with short circuit protection disabled for each address represented by six large shunts on the “Disable Short Circuit Protection” area. To enable short circuit protection for an address, remove the corresponding shunts from the “Disable Short Circuit Protection” area. When enabled, the module will not switch power supply if a short circuit condition exists on a notification appliance circuit.

NOTE: Short circuit protection may only be enabled if power supply monitoring is enabled.

FIGURE 7:

6. There is a power supply monitor that must be enabled to facilitate short circuit protection (see Figure 7). The module is shipped with power supply monitoring enabled represented by six large shunts on the pins of the “Enable Power Supply Monitor” area.

NOTE: Power supply monitoring should not be used for audio applications. The short circuit protection feature is also not available for audio applications. NOTE: The XP6-C does not provide ring back when used as a firefighter telephone circuit. NOTE: This feature is not for use with all Fire Alarm Control Panels. Please consult with Technical Services before enabling this feature. NOTE: Place unused shunts on single pin to store on board for future use. NOTE: SLC wiring is the top terminal block, notification appliance/power supply is the bottom. NOTE: Power must not be applied to the unit when changing functionality of the shunts. NOTE: Whether in Class B or Class A wiring, power supply monitoring and short circuit protection must be enabled on the NAC circuits that are sharing a power supply. NOTE: Short circuit protection can only be disabled if a power supply is not being shared by multiple NACs.

WIRING NOTES

• Power-limited circuits must employ type FPL, FPLR, or FPLP cable as required by Article 760 of the NEC.

• For easier wiring, assign all power-limited wiring to one side of the enclosure rather than alternating with non power-limited.

NAC WIRING AND SUPERVISION

For Class B, Style Y applications (figures 8, 9, and 12 are typical): connect the positive terminal of the notification appliance(s) to the NAC+ terminal and the negative device terminal to the adjacent NAC- terminal. Connect one (for each NAC) of the supplied EOL resistors across the NAC+ and NAC- wires, at the ends farthest away from the NAC terminal of the SC-6.

For Class A, Style Z applications (figures 10, 11, and 13 are typical) wire the NACs per table 2. The A/B select shunt must be removed prior to connecting the SC-6 to the SLC. The EOL resistors should not be used. The SC-6 is capable of supporting 3 Class A, Style Z NACs. The SC-6 will only respond at the base address, base address +2, and base address +4 (assuming no addresses have been disabled).

D500-50-00 3 I56-1802-012

C0226-00

+ 5 hidden pages