VT406 / DC current sensor & DC HOS-100Q1 / DC current converter

Physical description VT406

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Function

Simple open loop DC current transducer HOS-100Q1 can measure DC currents in the range of 0-100A. To transfer data to the Vutlan monitoring system it can be used together with the VT406 / DC current transceiver.

Components

The transducer consists of a plastic housing with an open/closed DC current loop and a 4-pin terminal connector. The current transceiver is a simple plastic case with 4 pins input, power 12V socket, and analog 0-5V RJ12 output.

Safety instructions

• Please observe the valid regulations for installation in the country in which the current transducer is installed and operated and the national regulations for accident prevention. Please also observe any internal company regulations, such as work, operating, and safety regulations.

• The technical specifications and limit values stated must not be exceeded under any circumstances. In particular, this applies to the specified ambient temperature range and IP protection category.

Siting location requirements

To ensure proper functionality, the conditions specified in the section “Technical specifications” must be observed.

Installation procedure

Notes on assembly

• Be careful, transducers max. voltage for isolation is 2kV.

• The transducer can measure DC current on any current wire, not more than 10 mm in diameter. Just open the cover, insert the wire, and close it.

• Max. maximum distance for the DC current transducer from the monitoring unit is 50 meters.

Installation

The transducer and the transceiver are installed together.

• Mount the transducer using M4 screws and M4 nuts. The distance between mounting holes is 50 mm.  

• Mount the current transceiver using M4 screws and M4 nuts. The distance between mounting holes is 60 mm.

• Use a 4-core flat cable and two green connectors supplied with the transceiver and the transducer to assemble the connecting cable.

Connection

Connect one end of the RJ11 / RJ12 cable to the monitoring unit and the other end to the analog output of the transceiver. Connect the transceiver to the power adapter 12V. Connect the transceiver and transducer with the Connecting cable. The monitoring system will automatically sense the current transducer as a sensor.

The new sensor will appear in the web interface of the system. Click on the "System tree" menu and you will find a new sensor marked by an icon (abbreviation from Voltage function, used for sensor monitors and converters). Click on the sensor to open its properties.

A modal window with sensor properties will pop up.

1. Change the type of the sensor by choosing "Current". Choosing any type of sensor does not affect sensor properties, it only changes the sensor icons for the comfort of usage.
   
   

2. Change the name of the sensor, for example, "Current".

3. Use the "Expression formula", in the case of VT406 if the initial current is I=0 then output V=~2.5V, full scale is 5V, with use of sensor HOS-100 100A=5V and -100A=0V, that means B= -2.5V, K=40. Expr= 40*(x-2.5) or 40*x -100.

4. Put in the threshold levels by dragging: Low alarm, Low warning, High warning, High alarm levels.
   
   

   
   For example, the graph above shows that the state of the sensor at the moment is "Normal" because 20.4 is between "Low warning" and "High warning" states, which is considered a "Normal" state.

5. Click “Save” or “Apply” at the bottom of the “Properties” window. The page will reload and the sensor will update by changing its icon type to

   (abbreviation from "Ampers").

Manipulating transducers

Technical specifications

Examples / Usage

Package content

Article link: https://vutlan.atlassian.net/wiki/spaces/DEN/pages/89292809