BC Time Recorder Simplex 100 Guía para resolver problemas descargar pdf (Pagina 14)

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The Power I/O Interface circuitry permits the Standard Slave to supervise and

control the Power Supply. A bi-directional 8 bit bus provides Standard Slave

access to Power I/O Interface status and control registers.

The Power I/O Interface assembly converts +28.5 volt A-tap power to 36V

Mapnet power.

Local 28 UPS unswitched power, battery relay control and primary power

supervision is provided by the P9 ribbon cable connection to the Power Supply.

Note: The 28 UPS power is essential for generation of the +5V system

power required for all sub-assembly operation and power supply

supervision and initialization.

The Power I/O Interface assembly provides tap voltage control. Jumper plugs

enable current-limiting Tap Voltages.

Ground fault detection is also performed on this assembly.

The Power I/O Interface:

• Is the interface for power supply supervision & control

• Converts 28.5V DC power to +5V & +36V

• Includes A/D converter for power supply voltage & current supervision

• Monitors Power Supply trouble indications

Two different Power I/O Interfaces exist for specific usage:

1. The 565-256 Power I/O Interface is used with:

• 636-341 Universal Switcher Power Supply (Gold Wing)

• 565-368 Standard Slave PCB

• Software EPROM 741-033 plugged into U11 on Standard Slave

2. The 565-220 Power I/O Interface is used with:

• 636-289 Power Supply (Black Hawk) or 636-370 w/charger adapter

• 565-222 Standard Slave PCB

• Software EPROM 741-008 plugged into U11 on Standard Slave

Continued on next page

4020 Power I/O Interface

Description

Power I/O Interface Functions

Application

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BC Time Recorder Simplex 100 Guía para resolver problemas Pagina 14