Alarm SAF RMBE Series Manuel d'instructions télécharger pdf (Page 20)

Glossary

Splitting a bulk power supply output into multiple, current limited outputs to prevent a

single circuit failure from talking down an entire system. The multiple terminal outputs also

simplify wiring by providing a pair of terminals for each circuit, rather than wiring several

circuits to a single pair of terminals.

Voltage Distribution

Voltage distribution without any control function for the distributed outputs. Power is

always available to the outputs. The PD8(F) accessory board is an example of simple

distribution.

Simple Distribution

A product which has an enclosure that allows mounting in a standard 19 inch equipment

rack

Rack Mount

A resettable overcurrent protection device, similar to a fuse or circuit breaker.PTC

A voltage output or wiring which conforms to NEC Article 725.Power Limited

Input present on some AlarmSaf products allowing control of output(s) in the system.

Typically used for dropping power to maglocks on egress doors during a fire alarm

condition, but can also be used for other control functions, such as resetting smoke

detectors

Fire Alarm Interface

See “Fire Alarm Interface”FAI

A DC power supply whose voltage input comes from another DC source. DC-DC converters

allow multi-voltage system backup with a single battery set.

DC-DC Converter

Voltage distribution providing on/off control for the outputs. Control can be from FAI, an

access control panel, card reader, or other device. The MB8(F) and CMB8(F) accessory

boards, and the APD8(F) are examples of controlled distibution.

Controlled Distribution

A voltage output or wiring which conforms to NEC Article 725.Class 2 Power Limited

The secondary DC voltage in a system. Only dual voltage systems use this voltage.Buss 2 (B2)

The primary DC voltage in a system. Typically the higher of the two voltages in dual voltage

systems

Buss 1 (B1)

A DC power supply whose voltage input is either direct from the AC line or though a

step-down AC transformer

AC-DC Converter

An AlarmSaf product for use with AlarmSaf power supplies containing an ABC connector.

These boards allow plug-in expansion of the functionality of the system. Examples of

accessory boards include, but are not limited to, voltage distribution (simple and controlled),

secondary DC-DC power supplies, and NAC Circuit expanders.

Accessory Board

Connector present on some AlarmSaf power supplies and accessory boards, allowing plug-in

expansion of the system

Accessory Board Connector

See “Accessory Board Connector”ABC

Glossary

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Glossary Rev A.01

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Alarm SAF RMBE Series Manuel d'instructions Page 20

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