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DigiRail-VA

INSTRUCTION MANUAL - V1.0x A

MAIN FEATURES ............................................................................................................................................................... 2

SPECIFICATIONS .............................................................................................................................................................. 3

INSTALLATION AND OPERATION .................................................................................................................................... 4

MECHANICAL INSTALLATION ..................................................................................................................................... 4

DIMENSIONS .......................................................................................................................................................... 4

ELECTRICAL INSTALLATIONS AND OPERATION ..................................................................................................... 4

INSTALLATION RECOMMENDATIONS ................................................................................................................. 5

POWER SUPPLY .................................................................................................................................................... 5

RS485 ...................................................................................................................................................................... 5

USB INTERFACE .................................................................................................................................................... 5

AC INPUTS .............................................................................................................................................................. 6

USING CURRENT TRANSFORMERS AND VOLTAGE TRANSFORMERS ..................................................... 7

MEASUREMENT OF FREQUENCY AND POWER FACTOR ........................................................................... 8

4-20 MA OUTPUT .................................................................................................................................................... 8

0-10 V OUTPUT ....................................................................................................................................................... 9

INDICATOR LIGHTS (LEDS) ............................................................................................................................................ 10

USB DRIVER INSTALLATION .......................................................................................................................................... 11

WINDOWS 8 ............................................................................................................................................................... 11

DEFINITION AND SELECTION OF SERIAL PORT (COM) - WINDOWS ......................................................................... 15

CONFIGURATION SOFTWARE ....................................................................................................................................... 16

EQUIPMENT SOFTWARE (FIRMWARE) UPDATE .................................................................................................... 16

MODBUS COMMANDS AND REGISTERS TABLE .......................................................................................................... 17

SUPPORTED MODBUS COMMANDS ....................................................................................................................... 17

READ HOLDING REGISTERS – 03H ................................................................................................................... 17

WRITE SINGLE REGISTER – 06H ....................................................................................................................... 17

WRITE MULTIPLE REGISTERS – 16H ................................................................................................................. 17

TABLE OF HOLDING REGISTERS ............................................................................................................................ 17

DETAILS ABOUT SOME REGISTERS ....................................................................................................................... 17

REGISTERS 20 TO 28 – MEASUREMENT VALUE IN INTEGER FORMAT ........................................................ 17

REGISTERS 200 AND 201 – SERIAL NUMBER ................................................................................................... 18

REGISTER 202 – FIRMWARE VERSION ............................................................................................................. 18

FLOATING POINT FORMAT ....................................................................................................................................... 18

WARRANTY ...................................................................................................................................................................... 19

Summary of content (19 pages)

PAGE 1
DigiRail-VA INSTRUCTION MANUAL - V1.0x A MAIN FEATURES ............................................................................................................................................................... 2 SPECIFICATIONS .............................................................................................................................................................. 3 INSTALLATION AND OPERATION ...........................................................................................
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DigiRail-VA MAIN FEATURES The DigiRail-VA is a transmitter and signal conditioner related to alternating current (single-phase), capable of measuring the following quantities on the True- RMS: • Voltage • Current • Active, reactive and apparent power • Frequency • Power Factor The measured values can be read through its RS485/Modbus RTU interface, in addition to being transmitted simultaneously using the 4-20 mA or 0-10 V outputs.
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DigiRail-VA SPECIFICATIONS Power Supply: 10 to 40 Vdc. Typical consumption: 50 mA @ 24 V. Operation Temperature: 0 to 60 °C. Dimensions: 99.5 x 114.0 x 17.5 mm Weight: 96 g Enclosure: PA66, with metallic attachment for 35 mm DIN track. Internal protection against polarity inversion of the power supply voltage. Wire gauge: AWG 28 to 12. Recommended torque: 4 kgf·cm. Voltage input range: 0 to 300 Vac (RMS). Current input range: 0 to 5 Aac (RMS). Frequency input range: between 45 to 65 Hz.
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DigiRail-VA INSTALLATION AND OPERATION MECHANICAL INSTALLATION The DigiRail-VA housing was designed for installation on DIN rail 35 mm. For installation on the rail, you should locate the clamp at the base and press it against the track. DIMENSIONS Fig. 01 – Dimensions of the DigiRail-VA ELECTRICAL INSTALLATIONS AND OPERATION The DigiRail-VA has connectors for the power supply, for the inputs for AC measurement, for the output for analog transmission and for the RS485 serial communication interface.
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DigiRail-VA INSTALLATION RECOMMENDATIONS We recommend using an appropriate fuse for the protection of the load to be measured. • Input conductors should travel the system plant separately from the output and supply conductors, in grounded electrical ducts. • The power source of the instruments should come from a network that is appropriate for the instrumentation.
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DigiRail-VA AC INPUTS The measurement circuit is electrically isolated from the rest of the equipment (power circuits and interfaces). However, great care must be taken with electrical wiring connections (see section "Electrical Installation"). Take care to comply with the maximum voltage and current set (see "Technical Specifications").
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DigiRail-VA Fig. 06 – Solely measurement of current USING CURRENT TRANSFORMERS AND VOLTAGE TRANSFORMERS To expand the capacity of measuring levels of current or voltage DigiRail-VA, you can use voltage and/or current transformers. Fig. 07 – Connecting with current transformer Fig.
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DigiRail-VA The transformer ratio should be informed in DigiRail-VA settings so you can make the correction of the measured value, adjusting to reality. Similarly, if the use of a transformer produces a phase shift between current and voltage in the secondary, can be corrected through the option "Allow the Correction of Phase" in the "Diagnostics" tab for DigiConfig. Example 1: Using a voltage transformer with 1000 V input and 300 V output.
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DigiRail-VA The 4-20 mA output is NOT isolated from the 0-10 V output, as they are interconnected through the "negative" pole. In addition, this conductor is also connected to the negative of the power source! Therefore, care must be taken when using the outputs 4-20 mA and 0-10 V to send signals to other devices that are powered by the same source than the DigiRail-VA.
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DigiRail-VA INDICATOR LIGHTS (LEDS) Status LED: It indicates the operational status of the equipment, according to the table shown below.
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DigiRail-VA USB DRIVER INSTALLATION In order to use the USB interface of the DigiRail-VA (so you can configure the equipment with the configuration software, for example), it is necessary to install its USB driver. The installation steps can vary from computer to computer, between different operating systems, and even between one version and another of the same operating system. Following are the steps and guidance screens for the driver installation. WINDOWS 8 1.
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DigiRail-VA 4. Click on the button "Update Driver...". 5. Ask to "Browse my computer for driver software". 6. Enter the path of the folder where the drivers are located (the product CD or folder where you saved them when downloaded from the site.
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DigiRail-VA 7. Wait for the installation to take start. 8. Windows will question this driver installation. Confirm selecting the option “Install”. 9. A message indicating successful installation will display.
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DigiRail-VA 10. Returning to the Device Manager screen, you can check which virtual serial port is allocated to the DigiRail-VA.
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DigiRail-VA DEFINITION AND SELECTION OF SERIAL PORT (COM) - WINDOWS The serial port associated with DigiRail-VA is automatically defined by the operating system a few moments after connecting the DigiRail-VA. The user can easily identify or change the COM port associated with DigiRail-VA: Control Panel / System / Hardware / Device Manager / COM & LPT Ports Select the device "USB Serial Port" corresponding to the DigiRail-VA and click on "Properties". Select "Port Settings" guide and click on "Advanced".
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DigiRail-VA CONFIGURATION SOFTWARE The software used for configuration of the DigiRail-VA is the DigiConfig (version 1.62 or higher). Besides the configuration, it allows the verification of the input channel Reading and provides status information. This software is supplied for free with the product CD and can also be downloaded at the manufacture’s website. Checking for updates from time to time is recommended.
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DigiRail-VA MODBUS COMMANDS AND REGISTERS TABLE The DigiRail-VA accepts some Modbus commands that are sent to its Modbus’ own address, operating as a network slave. Commands forwarded to other slaves (routing) will be sent in a transparent way. The following listed Modbus RTU commands (functions) are implemented, and these are interpreted by DigiRail-VA. For further information about each command and the Modbus protocol in general, access the website www.modbus.org.
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DigiRail-VA REGISTERS 200 AND 201 – SERIAL NUMBER They keep the serial number of the device. The two registers together form the serial number equipment, i.e., must be treated as a 32-bit number. REGISTER 202 – FIRMWARE VERSION States the version of firmware of the device, as shown below: If the version is “1.00” it will read the value as “100”. If the version is "2,04" it will read it as "204".
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DigiRail-VA WARRANTY Warranty conditions are available on our web site: www.novusautomation.com.