APP APP-601, Руководство по эксплуатации, Страница: 47 / 146

Hardware 4-10
4.5 APP-601 Data Chassis
The Data chassis is housed in a 19” rack mount enclosure with a hinged front panel. Circuitry contained in
the Data chassis includes:

Power Supply Circuit Board With Fuse & Switch

5V 100 Watt Power Supply

12V 100 Watt Power Supply

Alarm Circuit Board

Event Circuit Boards

DSP/IRIG Circuit Board

Analog Circuit Boards

Front Panel With LED Indicators
A Data chassis has 13 card slots. Three slots are always reserved; (1) for the power supply board, (1) for
the alarm board, and (1) for the DSP/IRIG board. The other 10 slots can be populated with analog or event
circuits. Therefore, the maximum number of analog circuit boards in a Data chassis is ten (no event circuit
boards). Or, the maximum number of event circuit boards is ten (no analog circuit boards). A mix of analog
and event boards can be inserted in the chassis, so long as the sum total does not exceed ten.
Functions and features of the Data Chassis circuit boards are discussed below:
4.5.1 Power Supply Circuit Board

Fuses the input power (2Amp/250V, 3AG, Slo-Blo, Glass Cartridge)

Uses a six position black barrier terminal block for input & output power connections (#6 screws)

Accepts input voltages of 86-373Vdc (48vdc Option) or 88-264Vac (50/60Hz)

Input voltage is connected to terminals 1 & 2

Terminals 3 & 4 are used for a 12VDC output to power the system Ethernet switch

Terminals 5 & 6 are used for powering the Computer Control Chassis. The voltage that appears
across terminals 5 & 6 will be the same as the input voltage.

This board contains a relay that drops power to the system, if it receives an appropriate command
from a local user or the master station computer. After a momentary power interruption, used as a
last resort to reboot the computer and reset the entire system, the relay automatically closes to
restore system power.
*WARNING*
All #6 ring terminals connecting to the power circuit board should be
insulated ring terminals.