Campbell 4-Channel Current/Voltage SDM-CVO4 Instrukcja Użytkownika Pobierz pdf

COMPONENT

SDM-CVO4

4-Channel Current/Voltage Module

Overview

The SDM-CVO4 allows a Campbell Scienti c datalogger to

output variable voltage or current signals under program

control. The datalogger can set each output to either 0 to

10 Vdc or 0 to 20 mA.Current outputs can also be scaled

and limited to 4 to 20 mA. In the curernt mode, the output

can either act as a 2-wire current controller, where the loop

is powered from a remote voltage source, or can be used

to generate a 0 to 20 mA current source using a voltage

output derived from its own power supply.

SDM Operation

The datalogger enables individual modules through an

addressing scheme. A total of sixteen SDM-CVO4s or

other SDM modules may be connected and addressed

from one datalogger. After a module is enabled, it

operates independently of the datalogger until additional

commands are received or results are transmitted.

Datalogger Connection

The CABLE5CBL is recommended for connecting the

module to the datalogger. A 30 cm (1-ft) cable length

should be su cient when both datalogger and SDM-CVO4

are housed within an ENC12/14 enclosure; a 60 cm (2-ft)

length may be required if the datalogger and SDM-CVO4

are housed at opposite ends of an ENC16/18 enclosure.

The cable length should be as short as possible. Typically,

the maximum cable length is 6 m. Contact Campbell

Scienti c if the length needs to be longer.

Compatible Dataloggers

The SDM-CVO4 works with our CR800, CR850, CR1000,

CR3000, CR5000 and CR7 dataloggers. CRBasic dataloggers

use the SDM-CVO4 instruction to control the SDM-

CVO4; Edlog dataloggers typically use Instruction 103

(dataloggers purchased before August, 1988 may use a

di erent instruction).

campbellsci.co.uk/index.cfm?id=172

More info: +44(0) 1509 828 888

Lets Datalogger Control

Voltage

Expands dataloggers’

current/voltage output capability

Typical Applications

Drives remote current-loop display units

Retransmits measured values to industrial control

systems that have current or high voltage inputs

Sends control signals to valve controllers

Provides excitation voltages or currents to external

sensors

Ordering information

Synchronous Device for Measurement

SDM-CVO4 4 Channel Current and Voltage Output

Module

SDM-to-Datalogger Cable

CABLE5CBL 5-conductor, 24 AWG cable with drain wire

and Santoprene jacket. Must choose a cable

termination option (see below).

Cable Termination Options (choose one)

-PT Cable terminates in stripped and tinned leads

for direct connection to a datalogger’s

terminals.

-PW Cable terminates in connector for attachment

to a prewired enclosure.

1 2

SDM-CVO4 1
Power considerations 2

Podsumowanie treści

Strona 1 - SDM-CVO4

COMPONENTSDM-CVO44-Channel Current/Voltage ModuleOverviewThe SDM-CVO4 allows a Campbell Scienti c datalogger to output variable voltage or current si

Strona 2 - Power considerations

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