CN0229软件用户指南

1892442 2021-04-09 | pdf | 639.46KB | 次下载 | 2积分

资料介绍

This version (03 Jan 2021 22:00) was approved by Robin Getz.The Previously approved version (25 Sep 2017 23:17) is available.

CN0229 Evaluation Board Guide

CN0229 Evaluation Board Guide

Overview

CN0229 is a multichannel, flexible, analog output solution with only two analog components and meets most requirements for multichannel I/O cards, programmable logic controllers (PLCs), and distributed control systems (DCSs) applications. The circuit also contains key features for industrial applications, such as on-chip output fault detection, packet error checking (PEC) by the CRC, flexible power-up options, and ESD protection making it an ideal choice for robust industrial control systems.

The AD5750-2 is a single-channel, low cost, precision voltage/current output driver developed to meet the requirements of industrial process control applications. The voltage output range can be programmed for the standard output ranges for PLC and DCS applications: 0 V to 5 V, 0 V to 10 V, −5 V to +5 V, and −10 V to +10 V with a 20% overrange setting provided for the standard ranges. The current output, which is provided on a separate pin, can be programmed for the ranges of 4 mA to 20 mA, 0 mA to 20 mA, −20 mA to +20 mA, 0 mA to 24 mA, and −24 mA to +24 mA. The unipolar ranges have a 2% overrange setting.

The AD5686R is a quad 16-bit nanoDAC+ with rail-to-rail voltage-buffered outputs integrated with an on-chip 2 ppm/°C typical (5 ppm/°C maximum), 2.5 V reference. The on-chip reference can drive the reference input of all four AD5750-2s, has a low output impedance of 0.05 Ω, and can source and sink up to 5 mA.

The ADuM1301 is a triple-channel digital isolator. The ADuM5400 is a quad-channel digital isolator with an integrated, isolated, dc-to-dc converter. They are both based on iCoupler® technology and are used to provide isolation between the signal chain and the system microcontroller, with an isolation rating of 2.5 kV rms. The ADuM5400 provides an isolated 5 V power supply for the 5 V circuits in the secondary side.

The EVAL-CN0229-SDPZ board connects to ADI’s System Demonstration Platform (SDP) and is powered by a triple output DC power supply of +15 V, -15 V and 6 V.

Required Equipment

EVAL-CN0229-SDPZ Evaluation Board
EVAL-SDP-CB1Z Controller Board (SDP-B Board)
CN0229 Evaluation Software
Triple Output DC Power Supply (6 V, +15 V and -15 V)
- Agilent E3631A 0 V to 6 V/5 A; ±25 V/1 A Triple Output DC Power Supply
Digital Multimeter for Verification (Optional)
- Agilent 34401A 6.5 Digital Multimeter
PC with the following Minimum Requirements
- Windows 7 or higher
- USB interface

General Setup

Block assignments

The EVAL-CN0229-SDPZ (CN-0229 Board) connects to the EVAL-SDP-CB1Z (SDP-B Board) via the 120-Pin connector
The EVAL-SDP-CB1Z (SDP-B Board) connects to the PC via the USB cable.
Terminal block CN1 is the +/- 15 V power supply input
Terminal block CN2 is the +6 V power supply input
Four OUT_[x] voltage/current output channels
- Optionally, the AD5750-2 output voltage feedback can be configured by connecting VSENSE+ and VSENSE- across a selected branch in the load circuit. VSENSE- should be within +/- 3.0 V of the GND

Do not connect the USB cable to the Mini-USB connector on the SDP board before turning on the dc power supply for the EVAL-CN0229-SDPZ.

Jumper settings

See image below for jumper settings. The bolded values are the default settings for the EVAL-CN0229-SPDZ.

Installing the Evaluation Software

Extract the file CN0229_Evaluation_Software.zip and open the file setup.exe.

NOTE: It is recommended that you install the CN0229 Evaluation Software to the default directory path C:/Program Files (x86)/Analog Devices/CN0229/ and all National Instruments products to C:/Program Files/National Instruments/
Click Next to view the installation review page
Click Next to start the installation
Upon completion of the installation of the CN-0229 Evaluation Software, the installer for the ADI SDP Drivers will execute.

NOTE: It is recommended that you close all other applications before clicking “Next”. This will make it possible to update relevant system files without having to reboot your computer.
Press “Next” to set the installation location for the SDP Drivers.

It is recommended that you install the drivers to the default directory path
C:/Program Files/Analog Devices/SDP/Drivers
Press “Next” to install the SDP Drivers and complete the installation of all software. Click “Finish” when done.

Using the Evaluation Software

Main Tab

Connection (Highlighted Dark Blue)
- Connect Button
  - Starts the connection with the CN0229 Evaluation Board
- Disconnect Button
  - Ends the connection with the CN0229 Evaluation Board

System Configuration (Highlighted Red)
- Connector
  - Selects which 120-pin connection of the SDP-B Board to use
- SLCK
  - Sets the SPI clock frequency used by the evaluation board

Set/Reset (Highlighted Light Blue and Pink)
- Reset
  - Resets AD5686R
- Set All
  - Sets all channels to their corresponding settings
- Quit
  - Exit the application

Channel 1 Settings (Highlighted Violet)
- Output
  - Enables or disables Channel 1
- Range
  - Sets the voltage/current output range of Channel 1
- Value
  - Sets the hex value corresponding to the desired output level in Channel 1

Channel 2 Settings (Highlighted Green)
- Output
  - Enables or disables Channel 2
- Range
  - Sets the voltage/current output range of Channel 2
- Value
  - Sets the hex value corresponding to the desired output level in Channel 2

Channel 3 Settings (Highlighted Orange)
- Output
  - Enables or disables Channel 3
- Range
  - Sets the voltage/current output range of Channel 3
- Value
  - Sets the hex value corresponding to the desired output level in Channel 3

Channel 4 Settings (Highlighted Yellow)
- Output
  - Enables or disables Channel 4
- Range
  - Sets the voltage/current output range of Channel 4
- Value
  - Sets the hex value corresponding to the desired output level in Channel 4

Running the System

Open the CN0229.exe application from the default installation location.
Set the correct connector and SCLK settings for the board in the System Configuration section.
Click the Connect Button
Upon successful connection, select the desired channel to be used.
Set the output of the channel to enable.
Select the range of desired output.
Input a corresponding hex value of the output level and select Set CH[x].
In case all channels are to be used, set all desired settings for each channel and click the Set ALL button.
Click Disconnect Button if finished.