Advantech PCI-1710UL Manual de usuario descargar pdf (Pagina 13)

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Features

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 m: max.

 Input Channels 16 isolated differential inputs

 Programming DO bit 0, 1, 2 and 3 for channel selection, DO 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 VA

 Operating Time 1 ms max.

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

and 1 mA

 Release Time 1 msec. max.

General

 Connectors

Controller: 2 x 20-pin box header, 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.

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.

Ordering Information

 PCLD-788 16-ch Relay MUX Board w/ Two 20-pin Flat Cables

 PCL-10120-1E 20-pin Flat Cable, 1 m

 PCL-10120-2E 20-pin Flat Cable, 2 m

20-13

DAQ Boards

Signal Conditioning

Industrial USB I/O

Modules

1 2 ... 8 9 10 11 12 13 14

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