Federal Signal Corporation SelecTone 300SCW-1, Руководство по установке и обслуживанию

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Installation and Maintenance Manual
Model 300SCW-1 Wall-Mounted Command Unit
8
CANCEL Pushbutton
The
CANCEL
pushbutton resets all the manually activated signaling functions of the 300SCW-1. It also
provides a momentary dry-contact closure to facilitate remote resetting of any other alarm circuit. The
contact stays closed as long as the CANCEL pushbutton is depressed. Resetting of remote activation
does not occur if the closure occurring at the remote input has not been removed.
Audio Inputs
A microphone can be connected directly to the 300SCW-1 through two modular jacks provided on
the right side of the unit, inside the cover. These inputs have the highest priority. However, there are
screw terminal provisions for a low-level, low-impedance audio signal to be input in the Class II wiring
compartment of the unit, which allows audio to be coupled from a telephone system (PBX) with the
proper interface equipment supplied by the phone company. This input is designed to also allow the
direct connection of a low-impedance remote microphone with separate PTT, which has priority below
the tones. An RCA jack is provided in the same area of the unit to accept a standard 1-volt audio signal
from a background music source such as a radio receiver, CD player or a tape player.
Power Requirements
SHOCK HAZARD
—
Do not perform any installation or maintenance on this
system when power is on. Because the 300SCW-1 does not have a power
switch, ensure that the power is disconnected before proceeding. Failure to
heed this warning may cause serious injury or death.
The control panel has a green LED to indicate the presence of primary power. The 300SCW-1 can be
operated from either a 120 Vac, 240 Vac, or 24 Vdc power source. The AC power is connected via a
terminal block located in the Class I wiring compartment, and the 120/240 Vac operation must be manually
switched internally while 24 Vdc connects via the terminals in the Class II wiring compartment.
Table 1 Product specifications
Power Input
Input Voltage 120/240 Vac, 50 Hz to 60 Hz
Standby Current 50 mA, 120 Vac
25 mA, 240 Vac
Operating Current 210 mA (max.)
Power Consumption 26 W (max.)
Emergency Power Source Input
Input Voltage 22 Vdc to 32 Vdc
Standby Current 90 mA
Operating Current 760 mA
Audio Inputs
Local PA (use optional Model MSB-1 microphone)
Input Impedance 5 k
Ω
Input Voltage 16 mVrms (max.)