Advantech PC-LabCard PCI-1784 Manual de usuario descargar pdf (Pagina 9)

8-9

Features

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ICOM

Motion Control

ADAM-3000

cPCI

DA&C

ATM & AWS

FPM

TPC

IPPC

Software

eConnectivity

UNO

ADAM-4000

ADAM-5000

ADAM-6000

ADAM-8000

BAS

PCLD-788

16-channel Relay

Multiplexer Board

Speciﬁcations

I/O

 Channel Closed Signal TTL-level pulse

 Cold-junction Sensor +24.4 mV/° C, 0 V at 0° C

Output

 Contact Rating Break-before-make with 3 msec. minimum break time

 Contact Resistance 200 Ω max.

 Input Channels 16 isolated differential inputs

 Programming D/O bit 0, 1, 2 and 3 for channel selection, D/O bit 4, 5,

6 and 7 for board selection. On-board DIP switches for

board-address setting

 Max. Input Voltage 100 V

or 100 V peak AC

 Max. Switching Current 0.5 A

 Max. Switching Power 10 Ω

 Operating Time 1 msec. max.

 Relay Life Expectancy 100 million cycles min. at 10 V

and 1 mA

 Release Time 1 msec. max.

General

 Certiﬁcations CE

 Connectors

Controller: 2 x 20-pin ﬂat-cable connectors, second connector in

parallel for daisy chaining

I/O: Screw terminals

 Dimensions (L x W) 205 x 114 mm (8” x 4.5”)

 Mounting 4 x screw holes for ﬂat surface mounting

 Power Consumption +5 V @ 380 mA max.

Ordering Information

 PCLD-788 16-channel Relay Multiplexer Board, user’s manual and

two 1 meter 20-pin ﬂat cables (P/N: PCL-10120-1)

PCLD-788 Block Diagram

 16 to 1 channel expansion

 Differential and fully isolated multiplexing

 Break-before-make relay control

 “Channel closed” signal for precise A/D triggering

 Up to 16 PCLD-788s can be cascaded for 256 channels

 Easy wiring for large channel count conﬁguration

 On-board cold-junction circuitry for thermocouple measurement

Pin Assignments

Introduction

PCLD-788 multiplexes 16 channels into a single I/O channel of an A/D converter, voltmeter or IEEE-488-based instrument. Up to 16 PCLD-788s can be cascaded for a total of 256

fully-isolated differential channels. The PCLD-788 can be controlled by any PC-LabCard™ product via a 16-bit 20-pin digital output port, found on cards such as the PCL-711B,

PCL-812PG or the PCL-818 series.

Channel selection (0-15) and board selection (0-15) are done by programming the high-order four bits and low order four bits of a digital output byte from the main I/O card in

use.

Applications

 Channel multiplexing for analog input channels of PCL-711B, PCL-812PG or PCL-

818 series cards

Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com

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Advantech PC-LabCard PCI-1784 Manual de usuario Pagina 9

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