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General Description
Model 2001-AC
Federal Signal www.fedsig.com
General Description
Overview
Federal Signal has a variety of hardware to power and control mechanical 48 Vdc
powered sirens. The 2001-AC is a power and control system for mechanical type sirens.
The 2001-AC consists of a nominal 220 Vac-to-48 Vdc Transformer Rectifier for power and
a Contactor Enclosure with fusing and contactors for switching power to a siren. Activate
the contactors by a simple switch, equipment using landlines, IP using IP network devices,
or by radio with Federal Signal FC Controllers. Typical 2001-AC systems are one-way
systems with no reporting or monitoring. In addition, 2001-AC systems are typically reliant
on the AC power grid for power. Loss of AC power results in no siren activation. For life
safety, Federal Signal recommends using the DCFCTBD system with two-way system
monitoring and battery backup in case of AC power loss.
The 2001-AC converts 208/220/240 Vac to nominal 48 Vdc and provides relay contactors
to switch 48 Vdc to external equipment (such as a siren).
The 2001-AC consists of two enclosures that you can separately mount for ease of
installation. (See Figure 1.) The 2001-AC consists of the following:
• NEMA4 enclosure with two contactors for chopper and rotate motors (Contactors are
commonly referred to as motor starters.)
• Transformer/Rectifier (rainproof)
The Contactors Enclosure switches 48 V power to the siren and rotator motors from
the Transformer/Rectifier. The Transformer/Rectifier enclosure contains the step-down
Transformer/Rectifier, which provides the 48 Vdc for powering the siren.
Figure 1 2001-AC Components
Contactor
Enclosure
Transformer/Rectifier
