ADLINK Technology ND-6021 Manual de usuario

ND-6021

ND-6024

Analog Input Modules

User’s Guide

Manual first edition: January 7, 1996

Manual Rev. 2.0: December 5, 1997

Manual Rev. 3.00: October 31, 1998

Manual Rev. 4.00: February 21.2001

Theinformationin this document is subject to change without prior notice in

order to improve reliability, design and function and does not represent a

commitment on the part of the manufacturer.

In no event will the manufacturer be liable to direct, indirect, special,

incidental, or consequential damages arising out of the use or inability to

use the product or documentation, even if advised of the possibility of such

damages.

This document contains proprietary information protected by copyright. All

rights are reserved. No part of this manual may be reproduced by any

mechanical, electronic, or other means in any form without prior written

permission of the manufacturer.

Trademarks

NuDAM is registered trademarks of ADLink Technology Inc.,

Otherproductnamesmentioned herein are used for identification purposes

onlyandmaybetrademarksand/orregisteredtrademarksoftheirrespective

companies.

Contents i

Contents

1. INTRODUCTION............................................................................................1-1

1. 1. ABOUT THE NUDAM ANALOG OUTPUT MODULES1-1

1. 2. OVERVIEW OF NUDAM-6021 1-1

1. 3. OVERVIEW OF NUDAM-6024 1-5

2. INITIALIZATION & INSTALLATION.......................................................2-1

2. 1. SOFTWARE INSTALLATION 2-1

2. 2. INITIALIZING A BRAND-NEW MODULE 2-1

2. 3. INSTALL A NEW NUDAM TO A EXISTING NETWORK 2-3

2. 4. APPLICATION WIRING FOR NUDAM-6021 2-4

2. 5. APPLICATION WIRING FOR NUDAM-6024 2-5

3. COMMAND SET.............................................................................................3-1

3. 1. COMMAND AND RESPONSE 3-1

3. 2. SUMMARY OF COMMAND SET 3-4

3. 3. SET CONFIGURATION 3-6

3. 4. READ CONFIGURATION 3-9

3. 5. READ MODULE NAME 3-10

3. 6. READ FIRMWARE VERSION 3-11

3. 7. RESET STATUS 3-12

3. 8. SYNCHRONIZED SAMPLING (6024 ONLY)3-13

3. 9. READ SYNCHRONIZED DATA (6024 ONLY)3-14

3. 10. DIGITAL INPUT (6024 ONLY)3-15

3. 11. ANALOG DATA OUTPUT 3-16

3. 12. 4MA OFFSET CALIBRATION 3-18

3. 13. 20MA CALIBRATION 3-19

3. 14. TRIM CALIBRATION 3-20

3. 15. SAVE POWER ON ANALOG OUTPUT VALUE 3-21

3. 16. LAST VALUE READBACK 3-22

3. 17. CURRENT READBACK 3-23

3. 18. READ LEADING CODE SETTING 3-24

3. 19.CHANGE LEADING CODE SETTING 3-26

3. 20. SET HOST WATCHDOG TIMER & SAFETY VALUE 3-28

ii Contents

3. 21. READ HOST WATCHDOG TIMER & SAFETY VALUE 3-31

3. 22. HOST IS OK 3-33

4. DATA FORMAT.............................................................................................4-1

4. 1. UNIT CONVERSION 4-1

4. 2. ENGINEERING UNITS 4-1

4. 3. PERCENT OF FSR 4-2

4. 4. HEXDECIMAL FORMAT 4-3

4. 5. SUMMARY OF DATA FORMAT 4-4

5. ANALOG OUTPUT CALIBRATION..........................................................5-1

5. 1. CALIBRATION 5-1

5. 2. ANALOG OUTPUT MODULE CALIBRATION 5-1

Initialization &Installation 1-1

1. Introduction

1. 1.About the NuDAM Analog Output Modules

The NuDAM provides an analog output modules which can convert

the digital command to analog. The basic features of each module

are shown here.

•NuDAM-6021 : analog signal output module with safety functions

•NuDAM-6024 : 4 channel analog output module

1. 2.Overview of NuDAM-6021

What is NuDAM-6021 ?

ND-6021 is an analog signal output module. It receives the digital

command from host computer through RS-485 network. The format

of the digital value can be engineering units, hexdecimal format or

percentage of full-scale range(FSR). A microprocessor is used to

convert the digital command to digital value to send to DAC. The DAC

converts the digital value into analog form. The analog output can be

either voltage or current output.

The ND-6021 is designed for safety. It provides many safety functions

such as isolation, watchdog, and power on safe value. The

opto-isolators provide 5000Vrms isolation voltage to isolate the digital

section and the remote controlled analog equipments. The damage

of power surges is avoided.

Another safety fucntion is the watchdog. Whenever the host is loss

contact with the remoted NuDAM module, or the micro-processor is

down, the module will reset itself and send the safety value to the

analog output therefore the industry safety is guarantee. The safety

value / power-up value can be set by configuration software.

1-2Initialization &Installation

The analog output can be readback through the module‘s ADC.

which can monitor the ’real‘ output of the device. The host can

check the digital command and the real output to avoid short circuits.

The slew rate of the output signal is also controllable by software.

Features of NuDAM-6021

•One uni-polar analog output channel

•Two sets of differential current and voltage output terminals

•Versatile digital signal format

•Programmable host watchdog timer for host failure protection

•Internal watchdog timer for device failure protection

•Easy programming by software

•Easy installation and wiring

Specifications of NuDAM-6021

²Interface

•Interface : RS-485, 2 wires

•Speed (bps) : 1200, 2400, 4800, 9600, 19.2K, 38.4K

²Analog Output

•Singal Output type: Differential type

•Resolution: 12 bits

•Accuracy: ±0.1% of FSR for current output

±0.2% of FSR for voltage output

•Unit Convertion: V or mA

•Output range:

Voltage output: 0 to 10 V (uni-polar)

Current output: 0 to 20 mA

4 to 20 mA

•Maximum Sampling Rate: 100 samples /sec

•Slew rate:

Voltage output: 0.0625 to 64 V/sec

Current output: 0.125 to 128 mA/sec

•Internal Current Load Resistor: 500Ω(%1)

²Readback Analog Input

•Accuracy: ±0.2% of FSR

²Isolation

Initialization &Installation 1-3

•Isolation voltage: 5000 Vrms

²Watchdog Function

•Module internal watchdog timer : 150 ms

•Power failure threshold : 4.65 V

•Host programmable watchdog : 100 ms ~ 25.500 sec

²Power

•Power supply : +10V to +30V

•Power consumption : 1.0W

Pin Definitions of ND-6021

Pin # Signal Name Description

1+IOUT Positive Current Output Terminal

2-IOUT Negative Current OutputTerminal

3+VOUT Positive Voltage Output Terminal

4-VOUT Negative Voltage Output Terminal

6Default* Initial state setting

7(Y) DATA+ RS-485 series signal, positive

8(G) DATA-RS-485 series signal, negative

9(R) +Vs Power supply, +10V~+30V

10 (B) GND Ground

1-4Initialization &Installation

A Look at ND-6021 & Pin Assignment

ND-6021

(Y)DATA+

(G)DATA-

(R)+Vs

(B)GND

Analog Output

(Current/Voltage)

+IOUT

-IOUT

+VOUT

-VOUT

DEFAULT*

Code Output Range

0 ~20 mA

4 ~ 20 mA

0 ~ 10V

Initialization &Installation 1-5

Functional Block Diagram of ND-6021

Data-

Data+ RS-485

Rec/DRv Micro

Processor

RS-485

Terminator EEPROM

Watchdog / Power Failure

Supervisor

*Defalut Setting

(1 bit Digital In)

Photo

Isolators

DAC

(12 bits)

DC to DC

Convertor

Voltage Output

VOUT +

VOUT -

V to I IOUT +

IOUT -

Power

Regulator

+10V ~ +30 V

GND +5V

GND Isolated Power

Isolated Ground

Current Output

1. 3.Overview of NuDAM-6024

What is NuDAM-6024 ?

ND-6024 is a 4 channel bipolar analog signal output module. It

receives the digital command from host computer through RS-485

network. A microprocessor is used to convert the digital command to

digital value to send to DAC. The DAC converts the digital value into

analog form.

The ND-6024 is designed for safety. It provides many safety functions

such as isolation, watchdog, and power on safe value. The

opto-isolators provide 5000Vrms isolation voltage to isolate the digital

section and the remote controlled analog equipments. The damage

of power surges is avoided.

1-6Initialization &Installation

Another safety fucntion is the watchdog. Whenever the host is loss

contact with the remoted NuDAM module, or the micro-processor is

down, the module will reset itself and send the safety value to the

analog output therefore the industry safety is guarantee. The safety

value / power-up value can be set by configuration software.

Features of NuDAM-6024

•4 channel bipolar analog output

•Programmable host watchdog timer for host failure protection

•Internal watchdog timer for device failure protection

•Easy programming by software

•Easy installation and wiring

Specifications of NuDAM-6024

²Interface

•Interface : RS-485, 2 wires

•Speed (bps) : 1200, 2400, 4800, 9600, 19.2K, 38.4K

²Analog Output

•Channel numbers : 4

•Singal Output type: Differential output

•Voltage Output: ±10V

•Resolution: 12-bit resolution

•Accuracy: ±1/2 LSB

•Gain Drift: ±5ppm/°C

²Digital Input

•Channel numbers : 7

•Logical level 0: +2V max.

Logical Level 1: +3.5V ~ +30V

²Isolation

•Isolation voltage: 5000 Vrms

²Watchdog Function

•Module internal watchdog timer : 150 ms

•Power failure threshold : 4.65 V

•Host programmable watchdog : 100 ms ~ 25.500 sec

²Power

•Power supply : +10V to +30V

•Power consumption : 2.5W

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