Installation

Power-limited Wiring Requirements

2.5 Power-limited Wiring Requirements

Power-limited and nonpower-limited circuit wiring must remain separated in the cabinet. All power-limited circuit wiring must remain at least 0.25” (6.35 mm) away from any nonpower-limited circuit wiring. Furthermore, all power-limited and nonpower-limited circuit wiring must enter and exit the cabinet through different knockouts and/or conduits. A typical wiring diagram for the MS-4 is illustrated below.

Power-limited Circuits

 

Nonpower-limited Circuits

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SIGNAL TRANSFORMER

XX-XXX-XXXXXX Rev X

SIGNAL TRANSFORMER

XX-XXX-XXXXXX Rev X

+

-

+

-

TB1

TB2

 

TB3

 

 

 

 

TB5

C

NC

NOTB6

C

NC

NO

TB7

 

 

 

 

TB1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nonreset

Resettable

 

A+ A- A+ A-

A+ A-

A+ A-

A+ A-

A+

A-

 

 

4XLB

 

 

 

 

 

CLASS A CLASS A

CLASS A CLASS A

CLASS A CLASS A

 

 

 

 

 

 

 

 

 

 

 

 

NAC 1

NAC 2

ZONE 1

ZONE 2

ZONE 3

ZONE 4

 

 

 

 

 

 

 

CAC-4

 

Power-limited

 

 

 

 

ZONE 1

 

Circuits

FIRE ALARM

SUPERVISORY

TROUBLE

MAINTENANCE

 

ZONE 2

 

 

FIRE ALARM

SUPERVISORY

TROUBLE

MAINTENANCE

 

ZONE 3

 

 

4XLMF

FIRE ALARM

SUPERVISORY

TROUBLE

MAINTENANCE

 

 

 

 

 

 

 

ZONE 4

 

 

 

FIRE ALARM

SUPERVISORY

TROUBLE

MAINTENANCE

AC

NAC

ZONE

NAC

SYSTEM

POWER

WALK

ALARM

POWER

DISABLE

DISABLE

FAULT

TROUBLE

TROUBLE TEST

SILENCE

ACK

ALARM

RESET

WALK

 

SILENCE

ZONE

TEST

1

ENABLE/DISABLE

4

2

3

2

 

 

J9

 

 

 

JP2

 

JP1

 

 

 

 

 

TB8

 

1 2

ON

1 2

ON

1 2

ON

4XTMF

1

 

J8

 

 

 

45

 

45

 

45

 

 

 

 

EARTH BATT CHG

3

 

3

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

J7

 

 

7

 

7

 

7

 

 

 

 

 

 

6

 

6

 

6

 

 

 

 

 

 

8

 

8

 

8

 

 

 

 

 

 

SW1

SW2

SW3

Nonpower-limited

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Circuit

ms4ulpwr.cdr

AC Power

Figure 2.9 Typical UL Power-limited Wiring Requirements

24

MS-2/MS-4 PN 51512:E 01/18/05

Page 24
Image 24
Honeywell MS-2 manual Typical UL Power-limited Wiring Requirements

MS-2 specifications

The Honeywell MS-2 is a sophisticated control panel designed for fire alarm detection systems. It is renowned for its reliability, efficiency, and advanced features which make it a popular choice among industry professionals. The MS-2 is especially well-suited for small to medium-sized commercial buildings, providing comprehensive fire detection and alarm capabilities.

One of the standout features of the Honeywell MS-2 is its dual-loop architecture. This allows for the connection of two loop circuits, each capable of supporting a wide range of devices such as smoke detectors, heat detectors, and manual pull stations. This flexibility in device connectivity enables tailored solutions based on specific building requirements, ensuring maximum safety and compliance with fire codes.

The MS-2 incorporates a user-friendly graphical interface that simplifies operation and monitoring. This LCD display provides real-time system status updates, which allows users to quickly identify any issues or alarms. Moreover, it features intuitive navigation buttons, making it easy for operators to interact with system functionalities.

In terms of technology, the MS-2 is built upon a robust digital platform that ensures precise detection and response times. With advanced signal processing capabilities, the system can differentiate between actual fire signals and nuisance alarms, thereby minimizing false alarms. This not only enhances safety but also reduces unnecessary disruptions and maintenance costs.

The MS-2 also supports addressable technology, enabling precise identification of device locations within the system. This is particularly beneficial in emergency situations where rapid response is critical. Furthermore, the panel can facilitate remote monitoring, allowing for real-time data access and integration with building management systems, thereby enhancing overall operational efficiency.

Another noteworthy characteristic of the Honeywell MS-2 is its compliance with various industry standards, ensuring that it meets the stringent requirements of fire safety regulations. The system is compatible with a wide range of Honeywell's fire alarm devices, offering versatility and scalability for future expansions.

In conclusion, the Honeywell MS-2 fire alarm control panel combines advanced technology, user-friendly design, and robust features to deliver reliable fire safety solutions. Its dual-loop capability, addressable technology, and real-time monitoring make it an ideal choice for businesses aiming to enhance their fire safety infrastructure. By choosing the MS-2, organizations can better protect their assets, ensure compliance, and safeguard the lives of occupants.