Honeywell MS-2 manual Calculating the System Current Draw, 3System Current Draw Calculations

Page 46

Power Supply Calculations

 

 

 

 

 

 

 

Calculating the System Current Draw

 

 

 

Table 5-3

contains three columns for calculating current draws. For each column,

 

 

 

 

calculate the current and enter the total (in amperes) in the bottom row. When finished,

 

 

 

copy the totals from Calculation Column 2 and Calculation Column 3 to Table 5-4 on

 

 

 

page 47.

 

 

 

 

 

 

 

 

 

 

 

TABLE 5-3:System Current Draw Calculations

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Calculation Column 1

 

 

Calculation Column 2

 

 

Calculation Column 3

 

 

Device Type

Primary, Non-Fire Alarm Current

 

Primary, Fire Alarm Current

 

Secondary, Non-Fire Alarm Current

(amps)

 

 

 

 

(amps)

 

 

 

(amps)

 

 

 

 

Qty

 

X[current draw]=

Total

 

Qty

X [current draw] =

Total

Qty

X[current draw]=

Total

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Main Circuit Board

 

 

 

 

 

 

 

X[0.112]1=

 

 

X[0.080]=

 

MS-2

1

 

X[0.080]=

0.

 

1

0.

1

0.

or

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X[0.085]=

 

MS-4

 

 

X[0.085]=

 

 

 

X[0.175]1=

 

 

 

CAC-4

[

]

X[0.001]=

 

[

]

X[0.001]=

 

 

X[0.001]=

 

 

 

 

 

 

 

 

 

 

 

 

 

4XTMF

[

]

X[0.005]=

 

[

]

X[0.011]1=

 

 

X[0.005]=

 

4XZMF

[

]

X[0.004]=

 

[

]

X[0.008]=

 

 

X[0.004]=

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4XLMF/RZA-4XF pair

[

]

X[0.004]=

 

[

]

X[0.019]=

 

 

X[0.004]=

 

1 pair max.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2-wire Detector Heads

[

]

X[

]2=

 

[

]

X[

]=

 

 

X[

]=

 

4-wire Detector Heads

[

]

X[

]3=

 

[

]

X[

]=

 

 

X[

]=

 

Power Supervision

[

]

X[0.025]=

 

[

]

X[0.025]=

 

 

X[0.025]=

 

Relays4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NAC #15

 

 

 

 

 

[

]

X[

]=

 

 

 

 

 

NAC #2

 

 

 

 

 

[

]

X[

]=

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Current Draw from

 

 

[

]=

 

 

 

[

]=

 

 

[

]=

 

TB1 (nonalarm6)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sum each column7 for

Primary Non-Alarm =

 

 

Primary Alarm =

 

 

Secondary Alarm =

 

 

totals

 

 

 

 

 

 

Table Footnote

1.If using the Reverse Polarity Alarm output, add 0.005 amps; if using the Reverse Polarity Trouble output, add another 0.005 amps.

2.Refer to the Device Compatibility Document for standby current.

3.Refer to the Device Compatibility Document for standby current.

4.Must use compatible listed Power Supervision Relay.

5.Current limitation of Terminal TB2 circuits is 2.50 amps per NAC (MS-4 requires optional transformer for max. current)

6.The total standby current must include both the resettable (TB1 Terminals 3 & 4) and nonresettable for MS-4 only (TB1 Termi- nals 1 & 2) power. Caution must be taken to ensure that current drawn from these outputs during alarm does not exceed maxi- mum ratings specified. Current limitations of TB1, Terminals 1 & 2 = 0.500 amps, filtered, 24 VDC +/-5%, 120 Hz ripple @ 10 mVRMS, nonresettable power and TB1, Terminals 3 & 4 = 0.500 amps, filtered, 24 VDC +/-5%, 120 Hz ripple @ 10mVRMS, resettable power.

7.Total current draw listed above cannot exceed 3.0 amps with only standard transformer installed or, for the MS-4, 6.0 amps with both the standard and optional transformers installed.

46

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

Image 46
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 InstructionsOther Underwriters Laboratories Documents for ReferenceFireLite Documents 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 LED Indicators Controls and IndicatorsFront Panel Membrane Buttons Circuits ComponentsOptional Modules and Accessories Battery Box 411UD Digital Alarm Communicator/TransmitterBackbox Mounting Dimensions Backbox MountingBackbox and Battery Box Primary Power Source AC and Earth Ground Connections Operating PowerSecondary Power Source Batteries Input Circuits IDC ConnectionsCombination Waterflow/Supervisory Zone Style B Combination Circuit on Zone 2 of the MS-4Output Circuits Notification Appliance CircuitsRelays Special Application DC Power Output Connections+ + Power-limited Wiring Requirements Typical UL Power-limited Wiring RequirementsJ1 Connector Installation of Optional ModulesInstallation 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 2.2 IDC1 Supervisory MS-4 only 2 SW2 DIP Switch Settings2.1 IDC1 Verification MS-4 only 2.4 IDC1 Supervisory for MS-2 or IDC2 Supervisory for MS-43 SW3 DIP Switch Settings Nonsilenceable Waterflow for Combination Circuit Strobe SynchronizationMaximum Number of Strobes for Synchronization SparesReset/Lamp Test Switch Functions in Normal ModeZone Enable/Disable ACK AcknowledgeWalktest WalktestAudible Walktest Status LEDs Operation System Supervisory Condition Response Fire Alarm ResponseFire Alarm Restoral 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.