SPS NAC Field Wiring Guidelines

Overview

Guidelines

Allocations

Each of the three NACs on the SPS has two pairs of driven outputs (A+/A-, B+/B-) which operate together.

NAC B outputs have polarity reversal supervision and expect a 10k EOLR. Each connected device must have a suitably rated blocking diode. EOLRs are supplied fitted to the NAC terminals.

NAC A outputs have an integral 10k to accommodate Class A (loop) wiring. Class A wiring is not mandatory under AS1670.1.

Class B (string) wiring can only have one branch.

The 3A max rating applies to each NAC, B + A outputs combined under alarm conditions. NAC load current may be displayed on the LCD.

The Australian SPS has extra decoupling capacitors fitted to the NAC outputs, and cannot be used to drive the Simplex range of addressable appliances (Strobes).

NACs may be programmed to be normally on to allow the terminals to be used as power supply outputs. See the SPS Auxiliary Power Wiring section following.

Review the following guidelines for NACs before you begin NAC field wiring.

•All wiring must be 0.75 mm2 to 4 mm2.

•All wiring is supervised and power-limited.

•The maximum alarm current is 3 A per circuit. The supervisory current is 2 mA at 24 VDC.

•The nominal supply voltage rating is 24 VDC, 2 V p-p ripple (maximum).

•The total available current from the SPS is 9A. Any current used for card power by modules plugged into the PDI, as well as any auxiliary 24 VDC current, must be deducted from the total 9A available current.

•Terminal designations “+” and “-” are for the Alarm state (ON), not the supervision state.

The configuration templates supplied for use with the 4100U-S1 all have these default assignments of the NAC outputs, with corresponding Custom Control equations.

•NAC1 : Ancillary Control Facility (ACF), to control ancillary devices during an Alarm. This output can be isolated using the ACF Isolate control on the keyboard.

•NAC 2 : Fire Bell, to operate a bell as required by AS4428.1. This output can be isolated using the Bells Isolate control on the keyboard.

•NAC 3 : Warning System, to operate devices such as T-Gen 50. This output can be isolated using the Warning System Isolate control on the keyboard.

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Tyco 4100U-S1 installation manual SPS NAC Field Wiring Guidelines
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4100U-S1 specifications

The Tyco 4100U-S1 is a sophisticated and robust fire alarm control panel known for its reliability and advanced features, catering primarily to commercial and industrial applications. This system represents the latest in fire safety technology, providing comprehensive protection for a wide range of environments.

One of the main features of the Tyco 4100U-S1 is its ability to support advanced signaling protocols. This capability allows for seamless communication with a variety of initiating devices and notification appliances, ensuring a rapid response to potential fire incidents. The control panel can accommodate a significant number of devices connected through its extensive loop options, enhancing its flexibility in larger installations.

The Tyco 4100U-S1 employs Intelligent Addressable Technology, which simplifies the installation process and reduces wiring complexity. Each device on the loop can communicate its status without needing additional wiring, making it easier to troubleshoot and maintain. This feature not only enhances the system's efficiency but also helps to minimize installation costs.

Another notable characteristic of the Tyco 4100U-S1 is its user-friendly interface. The panel is designed for ease of use, featuring intuitive controls and a clear display that allows users to monitor the system’s status quickly. The graphical interface provides real-time information about the system’s performance, giving users insight into alarm conditions and system health. This accessibility aids in training personnel and encourages adherence to safety protocols.

The Tyco 4100U-S1 also boasts advanced reporting capabilities, with programmable inputs and outputs that allow for detailed event logging and alarm management. The system can be configured to send notifications via various channels, ensuring that key personnel are alerted immediately in case of an emergency. This proactive approach to fire safety helps organizations mitigate risks and enhance response strategies.

In addition, the Tyco 4100U-S1 integrates well with other building management systems, supporting various communication protocols that facilitate interoperability. This integration capability allows users to create a comprehensive safety network that addresses not only fire protection but also other critical building functions.

Overall, the Tyco 4100U-S1 stands out in the fire alarm control panel market with its combination of advanced technology, intuitive design, and extensive flexibility, making it an ideal choice for organizations seeking robust fire safety solutions. Its features and characteristics ensure that it remains a top contender in enhancing life safety and property protection.
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