Impulse 463N Manual do Utilizador descarregar pdf (Página 19)

©Sealevel Systems, Inc.

SL9049 - 11/2010

SeaI/O Manual

Perfect for driving industry-standard solid-state relay (SSR) racks, the SeaI/O-462 provides 96

bits of buffered drive TTL I/O. Each DB-78 connector brings out 48 I/O bits addressable as six,

eight-bit ports. For easy connection to relay racks, Sealevel offers a six-foot cable (Part#

CA237) that terminates each DB-78 connector to two industry standard 50-pin IDC connectors.

Order part number 462x-KT and receive two CA237 cables with each unit.

The SeaI/O-462 uses 74ABT245 octal bi-directional transceivers to provide TTL input/output

capabilities and can sink 64mA and source 32mA. Each bit is pulled to +5V through a 10K ohm

pull-up resistor to insure each bit is at a known state when not driven.

Power Requirements

Max Output Power

+5VDC @ 1A (5W)

Inputs

Logic High

Max 0.8VDC

Logic Low

Min 2VDC

Outputs

Logic High

Max 0.5VDC @ 64mA

Logic Low

Min 2VDC @ 32mA

The SeaI/O-462 modules are designed to work with industry standard solid-state relay racks

that expect negative logic to operate. The SeaI/O-462 modules expect negative logic on the

inputs.

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Impulse 463N Manual do Utilizador Página 19