Honeywell MS-2 manual Input Circuits, IDC Connections

Page 20

Installation

Input Circuits

2.3 Input Circuits

The MS-2 has two IDCs (Initiating Device Circuits) and the MS-4 has four IDCs. Each circuit is compatible with System Sensor’s I3 smoke detectors which generate a maintenance signal when the detector becomes dirty and a separate supervisory ‘freeze’ signal when ambient temperature falls below the detector rating. The maximum loop resistance limit for each IDC is 100 ohms. The field wiring for each zone is supervised for opens, shorts and ground faults (zero impedance to ground). All conditions are visually and audibly annunciated.

Each circuit is configured for Style B (Class B) operation and will accept I3 smoke detectors, any normally-open contact devices as well as conventional 2-wire or 4-wire, 24 VDC smoke detectors. In addition, Zone 1 (IDC 1) on the MS-2 and Zone 2 (IDC2) on the MS-4 can be programmed as combination supervisory and waterflow zones. Refer to the Fire•Lite Device Compatibility Document for a list of compatible devices.

MS-4 Initiating Device Circuits can be converted to Style D (Class A) by installing the optional Class A Converter module. Refer to "CAC-4 Class A Converter Module (MS-4 only)" on page 25.

Class B Initiating Device Circuits (supervised and power-limited)

4.7 KΩ, ½ watt resistor P/N:71252

UL listed Power Supervision Relay (refer to Device Compatibility Document for list of compatible relays)

UL listed compatible 4-wire smoke detector

UL listed compatible

2-wire smoke detectors

manual pull stations

Resettable 24 VDC 4-wire smoke detector power

(500 mA maximum)

TB1

+ - + -

 

Nonreset Reset

heat detectors

Dummy load all

 

unused circuits - 4.7

 

KΩ, ½ watt resistor

 

(P/N: 71245)

 

 

 

 

 

 

ms-4idc.cdr

TB2

B+

B-

B+

B-

TB3

B+ B- B+ B-

 

B+ B- B+ B-

 

NAC 1

NAC 2

ZONE 1 ZONE 2

ZONE 3 ZONE 4

Note: Zones 3 & 4 on MS-4 only

Figure 2.4 IDC Connections

20

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

Page 19 Page 21
Image 20
Page 19 Page 21
Contents MS-2 & MS-4 MS-2E & MS-4E Fire Alarm System Limitations Installation Precautions MS-2/MS-4 PN 51512E 01/18/05 Table of Contents Power Supply Calculations Operating InstructionsFireLite Documents Underwriters Laboratories Documents for ReferenceOther J8 Battery Connector Supervised, nonpower-limited MS-2E Main Circuit BoardMS-4E Main Circuit Board Supv. Relay TB7 2A @ 30 VAC nonsupervisedProduct Features Product DescriptionProduct Features Product Description Specifications Front Panel Membrane Buttons Controls and IndicatorsLED Indicators Circuits ComponentsOptional Modules and Accessories Battery Box 411UD Digital Alarm Communicator/TransmitterBackbox Mounting Dimensions Backbox MountingBackbox and Battery Box Secondary Power Source Batteries Operating PowerPrimary Power Source AC and Earth Ground Connections Input Circuits IDC ConnectionsCombination Waterflow/Supervisory Zone Style B Combination Circuit on Zone 2 of the MS-4Output Circuits Notification Appliance Circuits+ + Special Application DC Power Output ConnectionsRelays Power-limited Wiring Requirements Typical UL Power-limited Wiring RequirementsInstallation of Optional Modules InstallationJ1 Connector CAC-4 Class a Converter Module MS-4 onlyWiring NACs and IDCs for Class a 11 Wiring NACs and IDCs for Class a Operation2 4XTMF, 4XLMF and 4XZMF Option Modules 12 4X Option Module Connection to MS-42.1 4XTMF Transmitter Module Installation 13 4XTMF Transmitter Module2.2 4XZMF Zone Relay Module MS-4 only 14 4XZMF Zone Relay Module2.3 4XLMF LED Interface Module MS-4 only 15 4XLMF LED Interface ModuleProgram Options via DIP Switch DIP Switch Settings MS-2 DIP Switch SettingsMS-4 DIP Switch Settings 1 SW1 DIP Switch Settings 2 SW2 DIP Switch Settings 2.1 IDC1 Verification MS-4 only2.2 IDC1 Supervisory MS-4 only 2.4 IDC1 Supervisory for MS-2 or IDC2 Supervisory for MS-43 SW3 DIP Switch Settings Strobe Synchronization Maximum Number of Strobes for SynchronizationNonsilenceable Waterflow for Combination Circuit SparesSwitch Functions in Normal Mode Zone Enable/DisableReset/Lamp Test ACK AcknowledgeAudible Walktest WalktestWalktest Status LEDs Operation Fire Alarm Response Fire Alarm RestoralSystem Supervisory Condition Response System Supervisory Restoral ResponseTrouble Condition Response Trouble Condition RestoralPower Supply Calculations 1120 VAC Branch Circuit RequirementsCalculating the System Current Draw 2Converting to Full AmperesCalculating the System Current Draw 3System Current Draw CalculationsCalculating the Battery Size 4Total Secondary Power Requirements at 24 VDCMS-2/MS-4 PN 51512E 01/18/05 Index NumericsFail-safe JP2Index Verification MS-2/MS-4 PN 51512E 01/18/05 MS-2/MS-4 PN 51512E 01/18/05 Limited Warranty

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.
Top Page Image Contents