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Summary of Contents for TILLQUIST LQT40F
- Page 1 USER MANUAL LQT40F TILLQUIST GROUP AB Box 1120 SE-164 22 Kista Sweden Tel: +46 8 594 632 00 info@tillquist.com www.tillquist.com Rev. 0.2 2022-10-18...
- Page 2 The LQT40F is a programmable multi transducer for power systems. All electrical quantities for AC current and voltage (True RMS) are covered by one single unit. It can measure single phase systems up to 4-wire unbalanced load systems. Serial communication with Profibus or Profinet.
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Page 3: Table Of Contents
Table of contents Instructions ............................1 1.1 Purpose of this document ........................ 1 1.2 Mounting ............................1 1.3 Installation ............................1 1.4 Operation ............................1 1.5 Safety ............................... 1 1.6 Warning! ............................2 1.7 Maintenance ............................ 2 1.8 Symbols ............................2 Connections ............................. -
Page 4: Instructions
1 Instructions 1.1 Purpose of this document This document describes how to use the LQT40F multi transducer. The user manual is intended to be used by: • installation personnel and commissioning engineers • service and maintenance personnel • planners 1.2 Mounting The transducer can be mounted on a 35 mm DIN rail according EN50022, on a wall or device cabinet for suitable protection. -
Page 5: Warning
Warning! Connection must comply with current regulations for systems with rated voltage up to 1000 V. Before switching on or off and if the housing is removed, all voltages to the equipment must be switched off and external currents circuit shorted before disconnected. 1.7 Maintenance The transducer requires no maintenance. -
Page 6: Connections
2 Connections 2.1 Connection diagram Voltage input Current input Aux Power Supply... -
Page 7: Electric Connection
Wire stripping: max 9 mm Recommended torque: 0.8 - 0.88 Nm / 7.2 - 7.9 in.lbs 2.3 Connection diagrams – System connection LQT40F system connection is programmable from single phase to 4-wire balanced or unbalanced connection. Configurable System Connection System Application... - Page 8 1-phase 4-wire 1 element 3-phase symmetric load 1-phase 2-wire 1 element Single-phase AC 1-phase 3-wire 1 element 3-phase symmetric load phase-shift U12-I1 1-phase 3-wire 1 element 3-phase symmetric load phase-shift U23-I1 1-phase 3-wire 1 element 3-phase symmetric load phase-shift U31-I1...
- Page 9 3-phase 3-wire 1 element 3-phase symmetrical load 3-phase 3-wire 2 elements 3-phase asymmetrical load 3-phase 4-wire 3 elements 3-phase asymmetrical load...
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Page 10: Measuring
3 Measuring 3.1 Measured quantities Prefix Quantity Calculation System / Phase Input current (I1+I2+I3)/3 System Phase current L1 Phase current L2 Phase current L3 Input voltage (U1+U2+U3)/3 System L1 Phase voltage L2 Phase voltage L3 Phase voltage Active power P1+P2+P3 System Active power L1 Active power L2... -
Page 11: Meassuring System
3.2 Meassuring system 3.2.1 Phase-Locked loop - PLL The measuring system use a phase-locked loop (PLL) between 10-120 Hz. All quantities are being measured. The number of samples per period is deppending of the frequency. 3.2.2 Soft mode A fixed sample rate of 1800 samples/second (soft mode) is used when the frequency is lower than 10 Hz or higher than 120 Hz. -
Page 12: Output - Profibus/Profinet
4 Output – Profibus/Profinet LQT40F has a Profibus or Profinet output for fast serial communication. Three different set of ”Process Data Set Mapping”” are availble. Each mapping has a unique GSD-file. The files are availble from Tillquist homepage. 4.1 Process Data Set Mapping A: Basic –... -
Page 13: Profinet
4.3 Profinet The Profinet address parameters are set via the free software HMS IPconfig, that is available from Tillquist homepage. The built-in webserver gives access to: • Network configuration parameters • Network status information... -
Page 14: Commissioning
5 Commissioning 5.1 Programming of the transducer ”ConfigLQT” is a free configuration software, it is availible for download from Tillquist homepage, www.tillquist.com. The software connects to the transducer and make it possible to change the configuration of adjustable parameters and to visualize live readings. -
Page 15: Technical Data
6 Technical Data Technical Data Details Input Voltage range (Un) 100 – 400 V (L-L) main voltage (nominal) 1 – 520 V TRMS (L-L) 50/60 Hz or 16⅔ Hz Measuring range 1-300 (L-N) 50/60 Hz or 16⅔ Hz 50/60 Hz (10…40….70…120 Hz) Frequency ⅔...
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