Compaq MPAC-18 Especificações descarregar pdf (Página 10)

CHAPTER 2: INSTALLATION

2-2 MAXNET

II – MPAC/MPDC Modular Power Supply – Installation & Operation Manual

2.3. DC Redundant Powering of Active MAXNET

II Chassis

If more than one power supply is connected to the chassis, the extra power supply acts as a redundant source of power.

Using internal logic within the module (MPAC uses diode steering, MPDC uses load sharing logic) if the main power supply

on the chassis fails, the other power supply becomes the active supplier to the +24 VDC chassis bus rail ensuring power is

always maintained to all active modules in the chassis.

2.4. Remote Powering of Additional Active MAXNET

II Chassis’

Both the MPAC and MPDC power supplies include the ability to remotely power additional MAXNET II chassis’ by connecting

bus wire to pin 2 (COM) and 3 (+24V) on the rear terminal block.

* In any of the examples above, be sure to refer to the next section for module power requirements. In any redundant

scenario, if a power supply fails, the load on any remaining power supply must not exceed 8 amps.

Figure #3: Front & Rear Panel Pictures

Figure #4: Remote Powering Figure #5: Redundant Powering

MPAC-110 / MPAC-220

MPDC

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Compaq MPAC-18 Especificações Página 10