Specifications

3U Traffic Outstation Handbook
667/HB/26568/000 Page 22 Issue 15
3. SPECIFICATIONS
3.1 INTRODUCTION
The following sections describe the full Electrical, Mechanical, Environmental,
Isolated Outputs, Isolated Extra Low Voltage Inputs, Isolated Low Voltage Inputs,
Analogue Inputs and Communications specifications of the unit.
3.2 ELECTRICAL
3.2.1 Mains Supply
Normally the unit is powered from an auxiliary mains supply provided within the
controller. In controllers without this facility or if this is not convenient, a suitable
alternative mains supply must be provided, being careful not to compromise the
safety of the controller (Refer to Engineering if in doubt).
Voltage: 230V AC RMS, +15% to -20%
Frequency: 46 - 54 Hz
Mains fused: The recommended rating of this external fuse is 2A anti-surge.
(The mains cable is rated to 6A, fuses up to 5A may be used)
3.2.2 Power Supply
The unit incorporates its own internal power supply unit that provides the necessary
supply voltages to all of the boards and assemblies associated with the complete
unit. The boards are designed and implemented to operate from a single voltage
regulated supply.
Output Supply: Regulated 13.65V DC
Rating: 3.15A
Powering: Processor board, I/O board(s), Modem and Charging the Battery
3.2.3 Power Dissipation
Low power CMOS devices are used throughout the unit to keep the power
dissipation as low as possible.
Total power consumption: 8.0 W typical (using maximum configuration of 3 I/O
boards and battery float charging)