Advantech PCI-1752USO Manual do Utilizador descarregar pdf (Página 13)

Features

www.advantech.com/products

Online Download

12-13

CompactPCI

Plug-in I/O

AWS

FPM

IPPC

TPC

RS-485 I/O

UNO

BAS

PAC & Software

Signal Conditioning

USB I/O

Motion Control I/O

Ethernet Switch

EDG

ICOM

Ethernet I/O

PCLD-788

16-ch 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. Onboard 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-ch 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

Onboard 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.

Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: (650) 588-9200-Outside Local Area: (800) 258-9200-www.stevenengineering.com

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