Service manual

6
Characteristics
DCB, DCFCB and DCFCTB Models
The DCFCTBs contain six user programmable functions in addition to the five preset
functions: ARM, DISARM, REPORT, GROWL TEST, MASTER RESET.
The DCFCTBs come equipped with the necessary sensors and wiring to provide
information on the following areas of operation:
 AC Power Status
 Communications Status
 Low Battery Voltage Indication
 Siren Activation Current
 Intrusion into Control Cabinet/Battery Cabinet
 Siren Rotation
The above information is returned in a Pass/Fail format. For example, if battery
voltage is at proper operating level, then it is returned as “Battery Voltage OK.” This
status information is made available for viewing at the Central Control Unit. This
reporting feature greatly improves warning system reliability by quickly alerting
operating personnel to problems that are encountered.
The Integral LCD displays Function Counters, Decoded two-Tone, DTMF,
POCSAG, MSK Digital functions decoded and the current Software Revision. The
display constantly scrolls through the display items.
Two-Way Radio Control
The Federal Signal DCFCTBs are available in VHF and UHF models transceivers to
provide two-way signaling capabilities. Refer to the radio instruction manual for
details concerning operation, specifications and maintenance. Consult Customer Care
at [phone] or Technical Support at [phone] for specialized radio
equipment needs.
DCB and DCFCB Communications Controller
The DCB and DCFCBs are one-way control and status monitoring siren controllers.
They have ten separately fused circuits to protect the siren controller. Two AC power
fuses (F1 and F2) protect the chargers and optional battery warmers respectively. The
main siren motor is protected by a 200 amp DC fuse. An in line fuse connected to K1
fuses the rotator motor. The contactor coils are fused with in line fuses. The charger
output wires are also individually protected with in line fuses (refer to Figure 11 DCB
Wiring Diagram, Figure 12 DCFCB Wiring Diagram, and Figure 13 Battery
Positioning and Wiring).
The Models DCB and DCFCB siren controllers are capable of producing a Steady
signal, Wailing signal, and a Fast Wail or Fire signal. The Steady signal is frequently