Document No: LT0122

F3200 Installation & Programming Manual

 

Applications

9.4.3INTRINSICALLY SAFE DETECTION

There are two types of device which may be inserted in a detector circuit between the FIP and the detectors to limit the electrical energy flow into the area and provide IS detection:

1)Galvanically (transformer) isolated repeaters (isolators).

2)Zener barriers (shunt barriers with fuses). These limit the circuit voltage relative to earth, and the circuit current.

Although Zener barriers are cheaper than isolators they require a special Intrinsic Safety Earth, and precautions, and are therefore not recommended.

9.4.3.1ISOLATED REPEATERS

There are several options for using isolated repeaters, each with differing limitations and expense.

The options are:

1.Use a 6 terminal isolating repeater where large numbers of smoke and/or flame detectors are required (see Section 9.4.3.2).

2.Use a lower-cost 4 terminal isolating repeater and a ZAU401 (Rev 2) where lower numbers of smoke and/or flame detectors are required (see Section 9.4.3.3).

3.Use a 4 terminal isolating repeater where all detectors generate a short circuit alarm condition (see Section 9.4.3.4).

For these the total capacitance and inductance of the detectors and cables on the IS circuit must be less than that specified in Table 9.4.1. The gases and vapours in each Gas group are listed in IEC 79-12.

 

 

 

GAS GROUP

MAX. CAPACITANCE

MAX. INDUCTANCE

 

 

 

 

 

 

Class IIA or Group D

1.04uF

31.9mH

Class IIB or Group C

0.39uF

12.6mH

Class IIC or Group A or B

0.13uF

3.6mH

 

 

 

TABLE 9.4.1

MAXIMUM CAPACITANCE & INDUCTANCE PER IS CIRCUIT

For isolated repeaters, the cable core to core capacitance can be used, rather than core to earth which, for bunched conductors on metal trays, may be higher. (Note that for Zener barriers, the core to earth capacitance is relevant). The values used in this section for a typical TPS pair, or multicore cable (unshielded) are:

TPS

C = 100nF/km (i.e. 100 pF/m), L = 0.8mH/km

Cable manufacturers may quote differing values for specific cables.

It is the responsibility of the System Engineer to check that the cable

used has values less than or equal to the above values, and that the total capacitance and inductance for each circuit meet the requirements.

The values specified for the detectors are shown in Table 9.4.2.

Issue 2.7

5 July 2001

Page 9-23

Page 192 Page 194
Page 193
Image 193
Tyco F3200 manual Intrinsically Safe Detection, Isolated Repeaters, GAS Group MAX. Capacitance MAX. Inductance, Tps
Page 192 Page 194

F3200 specifications

The Tyco F3200 series is a sophisticated fire alarm control panel designed for use in various commercial and industrial settings. Renowned for its reliability and ease of use, the Tyco F3200 stands out for its advanced features and state-of-the-art technology, making it a preferred choice for fire safety professionals.

One of the key features of the Tyco F3200 is its modular design, which allows for customization based on specific building requirements. This flexibility enables users to scale the system efficiently, with the capability to connect multiple panels in a network configuration. This adaptability is crucial for large facilities that require comprehensive coverage across expansive areas.

The F3200 utilizes a microprocessor-based control technology that ensures swift processing and response times. This technology enhances the panel's ability to monitor and manage alarms, alerts, and system status, ensuring that users receive real-time updates and notifications in the event of an emergency. The intuitive user interface, characterized by a clear display and user-friendly controls, simplifies the operation process, making it easier for staff to manage the fire alarm system effectively.

Additionally, the Tyco F3200 is compatible with various detection devices, including smoke detectors, heat detectors, and manual pull stations. This compatibility means that the system can be tailored to meet specific safety needs, accommodating a wide array of environments. Furthermore, the panel supports both conventional and addressable devices, providing flexibility in system design.

Another significant advantage of the Tyco F3200 is its advanced communication capabilities. The panel can integrate with various alarm transmission technologies, including RS-232 and RS-485 interfaces, allowing for seamless communication with remote monitoring stations. This feature enhances the reliability of emergency response efforts.

Moreover, the F3200 includes robust diagnostic and reporting tools that help maintenance personnel ensure the system's optimal performance. It provides comprehensive event logs and troubleshooting features, allowing for easy identification of issues and efficient maintenance procedures.

In summary, the Tyco F3200 is an advanced fire alarm control panel that integrates cutting-edge technology, flexibility, and user-friendliness. Its modular design, quick response time, compatibility with various devices, and strong communication capabilities make it an excellent choice for anyone seeking a dependable fire alarm system. Whether for small businesses or large-scale operations, the F3200 delivers essential fire safety solutions tailored to meet the diverse needs of its users.
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