Summary of Contents for ONTRAK ADU71
- Page 1 ADU71 USB to Current Output ( 4-20mA, 0-20mA Transmitter ) User Manual Ver 1.2 www.ontrak.net...
- Page 2 Country, Postal Code Canada P3A 2T2 Phone Number (705) 671-2652 Fax, Email (705) 671-6127 tom@ontrak.net Name of Person binding the manufacturer. Tom Fortin- Director Oct 29, 2013 Ontrak Control Systems Inc Sudbury , Ontario, CANADA Page 2 of 18 ADU71 User Manual...
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Page 3: Table Of Contents
6d) Using the Watchdog Feature 6e) Using the Status Feature 6f ) The ADU71 Reset Command The ADU71 Connection Diagrams 7a) Connecting to Current Input Devices 7b) Connecting to Voltage Input Devices Specifications and Dimensions Page 3 of 18 ADU71 User Manual... -
Page 4: What Is Included And Where To Start
A complete SDK including DLL, programming language examples, and AduHidtest software is available at: http://www.ontrak.net/programming.htm First time users should first review the ASCII command set for the ADU71 and then use AduHidTest USB test software to become familiar with the operation of the various features of the product. -
Page 5: The Adu71 Status Led
-ADU71 disconnected from USB bus OR host computer has entered SLEEP mode. The ADU71 can be connected to the USB bus via the enclosed 10' A-B USB cable. The cable provides both power and communications connections to the ADU71. When first connected, the STATUS led will turn RED indicating power is applied. -
Page 6: Aduhidtest Usb Device Test Program
AduHidTest is a Windows based USB device test program used to test the connection of ADU data acquisition devices to a USB port. The program is also a useful tool to allow programmers to become familiar with the ADU71 command set. - Page 7 Show List Button is clicked. Figure 2: ShowList Window The window indicates that there is one ADU71 connected with serial number T10002. Select the device by double clicking on the text “ ADU71 serial number = T10002”. The AduHidTest main window will now display the product ID and Serial number.
- Page 8 Once connected, you may now send commands to the available "pipes" on the ADU71 device. Pipes are the individual connections to functional sections of the ADU71 . The Device Pipe is used to send standard ASCII ADU commands to control the peripherals built into the ADU71 such as the current loop output or the watchdog timer.
- Page 9 Some commands will cause a response to be sent from the ADU71 back to the host computer. For example, if an "rd" ( read output current setting ) command is sent, the ADU71 will send back the 5 digit value of the present output current setting.
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Page 10: Adu71 Command Summary
( No fault ) Slew Active ( The output is presently slewing ) Loop is OPEN ( Fault condition ) Over Temperature (ADU71 core above 150C ) Resets ADU71 to power-on ( default ) condition. Page 10 of 18 ADU71 User Manual... -
Page 11: Adu71 Command Descriptions
6b) Reading Output Current The ADU71 output current setting can be read back as a 16-bit number from 00000 ( 0% FS ) to 65535 ( 100% FS ). The 16 bit integer number returned represents the current setting and the output current can be calculated depending on which command was used to set the current. -
Page 12: 6C) Setting The Slew Rate
6c) Setting the Slew Rate The ADU71 slew rate can be set to eight different rates ranging from 1ms to 10 seconds. The slew rate is the rate at which the output changes and the specified rate is the time it takes for the output to change from 0% FS to 100% FS. -
Page 13: 6E) Using The Status Feature
Watchdog setting is 0. ( OFF ) IMPORTANT: 1.) When the watchdog times out, the ADU71 output current will go to zero and the output will switch to high impedance mode. To re-enable the output after a watchdog timeout occurs use either the WRnnnnn or WLnnnnn command. -
Page 14: The Adu71 Connection Diagrams
ADU71 Connection Diagrams The ADU71 USB to Current Output Interface is a USB bus powered current loop source for driving 4-20mA or 0-20mA input devices. The ADU71 can also be used with external resistors to provide 1-5VDC, 0-5VDC or 0-10VDC signals for variable frequency drives, valves etc. -
Page 15: 7B) Connecting To Voltage Input Devices
Ensure the resistor is correctly and firmly connected to the device input terminals. If the resistor is not correctly connected, or open circuit, the ADU71 will apply 24VDC to the input of the device under control when the ADU71 loop current is enabled. - Page 16 Ensure the resistor is correctly and firmly connected to the device input terminals. If the resistor is not correctly connected, or open circuit, the ADU71 will apply 24VDC to the input of the device under control when the ADU71 loop current is enabled.
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Page 17: Specifications And Dimensions
Isolation 2500V Loop Compliance Voltage 21V Minimum Special Functions Internal 24VDC supply eliminates need for Internal Loop Power Supply external loop power supply. Mounting Options Flange Mount ( STANDARD ) , DIN Rail Page 17 of 18 ADU71 User Manual... - Page 18 Notes: ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ ________________________________________________________________ C2013-Ontrak Control Systems Inc. Page 18 of 18 ADU71 User Manual...
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