TILLQUIST LQT40F User manual

Rev. 0.2 2022-10-18
USER MANUAL LQT40F
TILLQUIST GROUP AB
Box 1120
SE-164 22 Kista
Sweden
Tel: [phone]
[email protected]om
www.tillquist.com

i
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.
Our free transducer configuration software “ConfigLQT” is used to easily program the
LQT40F via its USB-port.

ii
Table of contents
1Instructions...................................................................................................................................... 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
2Connections..................................................................................................................................... 3
2.1 Connection diagram......................................................................................................................... 3
2.2 Electric connection.......................................................................................................................... 4
2.3 Connection diagrams –System connection..................................................................................... 4
3Measuring........................................................................................................................................ 7
3.1 Measured quantities......................................................................................................................... 7
3.2 Meassuring system .......................................................................................................................... 8
3.2.1 Phase-Locked loop - PLL ............................................................................................................. 8
3.2.2 Soft mode...................................................................................................................................... 8
3.2.3 Block diagram............................................................................................................................... 8
3.2.4 Frequency filter............................................................................................................................. 8
4Output –Profibus/Profinet............................................................................................................... 9
4.1 Process Data Set Mapping............................................................................................................... 9
4.2 Profibus............................................................................................................................................ 9
4.3 Profinet.......................................................................................................................................... 10
5Commissioning.............................................................................................................................. 11
5.1 Programming of the transducer ..................................................................................................... 11
5.2 LED functionality.......................................................................................................................... 11
6Technical Data............................................................................................................................... 12

1
1Instructions
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. The enclosure shall not be accessible without tools.
1.3 Installation
The installation shall be made by trained personnel and in accordance with applicable regulations.
Before the installation, please check that the transducer is the correct type and complies with the
installation needs.
A marked external circuit breaker to turn off the power supply to the
transducer must be installed near. The OFF-position shall be clearly
marked.
Attention: Danger to life! Ensure that all leads are free of potential when
connection them!
Voltage measurements inputs must have circuit breakers or fuses rated 5
Amps or less.
The measuring circuits from the current transformers must be short-
circuited before disconnection. No fuses are allowed on the current inputs.
1.4 Operation
The transducer is intended for operation at an altitude not exceeding 2000 m and in an environment
that is not considered as wet location.
Operation temperature: -20…22…24…+55°C
Proper function is only guaranteed if the USB is not connected to the transducer and all the
instructions in this manual are followed for safety reasons.
1.5 Safety
All inputs and outputs are galvanically isolated from each other.
Protection class:
II, protective insulation, voltage inputs via protective
impedance.
Protection:
IP40 (housing), IP20 (terminals)

2
1.6 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. Any repairs shall be performed by trained personnel, or the
equipment shall be returned to the supplier for repair.
1.8 Symbols
Double insulated device, protection class 2.
Warning for life-threatening or hazardous for properties situations.
Caution, possibility of electric shock
Read the manual before use
The device must be discarded in a professional way
CE conformity mark

3
2Connections
2.1 Connection diagram
Voltage input
UL1
2
UL2
5
UL3
8
N
11
Current input
In
Out
IL1
1
3
IL2
4
6
IL3
7
9
Aux Power Supply
13
14

4
2.2 Electric connection
The plug-in terminals needs to be removed before accessing the input terminals.
Inputs L1, L2, L3, N, I1, I2, I3, Aux.supply
Wire section:
6.0 mm² / 10 AWG
Clamp opening size:
3.2 × 3.9 mm
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
connection
Application
I1
I2
I3
U1
U2
U3
N
U12
U23
U31
-00
4wire, 3 phase symmetric load
X
-
-
X
-
-
X
-
-
-
-01
1-wire, 1 phase
X
-
-
X
-
-
X
-
-
-
-02
3-wire, 3 phase symmetric load
X
-
-
-
-
-
-
X
-
-
-03
3-wire, 3 phase symmetric load
X
-
-
-
-
-
-
-
X
-
-04
3-wire, 3 phase symmetric load
X
-
-
-
-
-
-
-
-
X
-05
3-wire, 3 phase symmetric load
X
-
-
X
X
X
-
X
X
X
-09
3-wire, 3 phase asymmetric load
X
-
X
X
X
X
-
X
X
X
-11
4-wire, 3 phase asymmetric load
X
X
X
X
X
X
X
X
X
X
-11
4-wire, 3 phase asymmetric load Open Delta
X
X
X
X
X
X
-
X
X
X

5
-00
1-phase
1 element
4-wire
3-phase symmetric load
-01
1-phase
1 element
2-wire
Single-phase AC
-02
1-phase
1 element
3-wire
3-phase symmetric load phase-shift U12-I1
-03
1-phase
1 element
3-wire
3-phase symmetric load phase-shift U23-I1
-04
1-phase
1 element
3-wire
3-phase symmetric load phase-shift U31-I1

6
-05
3-phase
1 element
3-wire
3-phase symmetrical load
-09
3-phase
2 elements
3-wire
3-phase asymmetrical load
-11
3-phase
3 elements
4-wire
3-phase asymmetrical load

7
3Measuring
3.1 Measured quantities
Prefix
Quantity
Calculation
System / Phase
I
Input current
(I1+I2+I3)/3
System
I1
Phase current L1
L1
I2
Phase current L2
L2
I3
Phase current L3
L3
U
Input voltage
(U1+U2+U3)/3
System
U1
L1 Phase voltage
L1
U2
L2 Phase voltage
L2
U3
L3 Phase voltage
L3
P
Active power
P1+P2+P3
System
P1
Active power L1
L1
P2
Active power L2
L2
P3
Active power L3
L3
Q
Reactive power
Q1+Q2+Q3
System
Q1
Reactive power L1
L1
Q2
Reactive power L2
L2
Q3
Reactive power L3
L3
S
Apparent power
S1+S2+S3
System
S1
Apparent power L1
L1
S2
Apparent power L2
L2
S3
Apparent power L3
L3
U12
Main voltageL1-L2
L1 - L2
U23
Main voltage L2-L3
L2 - L3
U31
Main voltage L3-L1
L3 - L1
PF
Active power factor
P/S
System
PF1
Active power factor
COS(φ1)=P1/S1
L1
PF2
Active power factor
COS(φ2)=P2/S2
L2
PF3
Active power factor
COS(φ3)=P3/S3
L3
QF
Reactive power factor
Q/S
System
QF1
Reactive power factor
SIN(φ1)=Q1/S1
L1
QF2
Reactive power factor
SIN(φ2)=Q2/S2
L2
QF3
Reactive power factor
SIN(φ3)=Q3/S3
L3
LF
LF factor
sign(Q)*(1-|PF|)
System
LF1
LF factor
sign(Q1)*(1-|PF1|)
L1
LF2
LF factor
sign(Q2)*(1-|PF2|)
L2
LF3
LF factor
sign(Q3)*(1-|PF3|)
L3
PA
Phase angel
PA=(PA1+PA2+PA3)/3
System
PA1
Phase angel
φ1=ARCCOS(P1/S1)/PI*180*sign(P1)
L1
PA2
Phase angel
φ2=ARCCOS(P2/S2)/PI*180*sign(P2)
L2
PA3
Phase angel
φ3=ARCCOS(P3/S3)/PI*180*sign(P3)
L3
IS
Input current with sign
(IS1+IS2+IS3)/3
System
IS1
Phase current with sign
I1*sign(P1)
L1
IS2
Phase current with sign
I2*sign(P2)
L2
IS3
Phase current with sign
I3*sign(P3)
L3
P_I1_U12
Active power, System connection-02
System
P_I1_U23
Active power, System connection -03
System
P_I1_U31
Active power, System connection -04
System
Q_I1_U12
Reactive power, System connection -02
System
Q_I1_U23
Active power, System connection -03
System
Q_I1_U31
Active power, System connection -04
System
F
Frequency
System

8
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. Measured quantities in soft mode are voltage (U), current (I) and
frequency (F).
3.2.3 Block diagram
Schematic block diagram of measure process.
*Soft mode = 1800 samples / second
3.2.4 Frequency filter
The frequency measurement is low-pass filtered with a binomial filter. This setting determines the
length of the filter in periods of the measured frequency. A shorter length gives a more responsive
measurement. A longer length gives a slower, more stable measurement.
Frequency filter is adjustable between 0 –10.

9
4Output – 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 –Is the same mapping as old LQT60F
B: Bassic + High Resolution F
Parameters
Data
Set
Parameter
Range
Bus value
Type
Byte
Note
A
B
Bus Inc Num
-
-
0-65535
Unsigned Word
1-2
-
X
X
Data Inc Num
-
-
0-65535
Unsigned Word
3-4
-
X
X
I_RMS
0-12
A
0-65535
Unsigned Word
5-6
(I1+I2+I3)/3
X
X
U_RMS
0-300
V
0-65535
Unsigned Word
7-8
(U1+U2+U3)/3
X
X
P_RMS
±10800
W
±10800000
Signed Double Word
9-12
P=P1+P2+P3
X
X
Q_RMS
±10800
var
±10800000
Signed Double Word
13-16
Q=Q1+Q2+Q3
X
X
F
0-300
Hz
0-65535
Unsigned Word
17-18
-
X
X
F_HIRES
0-300
Hz
0-300000
Unsigned Double Word
19-22
-
X
A: Basic
Bus Increment Number increase with every new message.
B: Basic + High Resolution F
Data Increment Number increase with every new measured
C: Extended
Parameters
Data
Set
Parameter
Range
Bus value
Type
Byte
Note
C
Bus Inc Num
-
-
0-65535
Unsigned Word
1-2
-
X
Data Inc Num
-
-
0-65535
Unsigned Word
3-4
-
X
I_RMS
0-12
A
0-12000
Unsigned Double Word
5-8
(I1+I2+I3)/3
X
U_RMS
0-300
V
0-300000
Unsigned Double Word
9-12
(U1+U2+U3)/3
X
P_RMS
±10800
W
±10800000
Signed Double Word
13-16
P=P1+P2+P3
X
Q_RMS
±10800
var
±10800000
Signed Double Word
17-20
Q=Q1+Q2+Q3
X
F
0-300
Hz
0-300000
Unsigned Double Word
21-24
-
X
I1
0-12
A
0-12000
Unsigned Double Word
25-28
-
X
I2
0-12
A
0-12000
Unsigned Double Word
29-32
-
X
I3
0-12
A
0-12000
Unsigned Double Word
33-36
-
X
U1
0-300
V
0-300000
Unsigned Double Word
37-40
-
X
U2
0-300
V
0-300000
Unsigned Double Word
41-44
-
X
U3
0-300
V
0-300000
Unsigned Double Word
45-48
-
X
U12
0-520
V
0-520000
Unsigned Double Word
49-52
-
X
U23
0-520
V
0-520000
Unsigned Double Word
53-56
-
X
U31
0-520
V
0-520000
Unsigned Double Word
57-60
-
X
P1
±3600
W
±3600000
Signed Double Word
61-64
-
X
P2
±3600
W
±3600000
Signed Double Word
65-68
-
X
P3
±3600
W
±3600000
Signed Double Word
69-72
-
X
Q1
±3600
var
±3600000
Signed Double Word
73-76
-
X
Q2
±3600
var
±3600000
Signed Double Word
77-80
-
X
Q3
±3600
var
±3600000
Signed Double Word
81-84
-
X
LF
±1
±1000
Signed Double Word
85-88
-
X
PA
±180
°
±180000
Signed Double Word
89-92
-
X
C: Extended
Bus Increment Number increase with every new message.
Data Increment Number increase with every new measured
4.2 Profibus
The address of the Profibus DP is set via the software ConfigLQT.

10
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

11
5Commissioning
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.
ConfigLQT supports offline configuration of adjustable parameters.
Save and load configuration file.
Functionality of ConfigLQT
ConfigLQT allows the user to:
•See online readings of measured values
•Adjust the functionality of the outputs
•Save parameter settings to a file
•Load parameter settings from a file
•Print settings report
•Upgrade firmware
5.2 LED functionality
LQT40F have two LEDs at front, Power and Status.
State
Power
Status
Start-up
Flashing - On 1 sec / Off 0.5 sec
Flashing - On 1 sec / Off 0.5 sec
Normal operation
On
Flashing - On 200 ms / Off 200 ms
Error
Flashing - On 100 ms / Off 100 ms
Off

12
6Technical Data
Technical Data
Details
Input
Voltage range (Un)
100 –400 V (L-L) main voltage (nominal)
Measuring range
1 –520 V TRMS (L-L) 50/60 Hz or 16⅔ Hz
1-300 (L-N) 50/60 Hz or 16⅔ Hz
Frequency
50/60 Hz (10…40….70…120 Hz)
16⅔Hz (10…15….18…120 Hz)
Overload voltage
1.5 x Un –continuously, 2 x Un –10 s
Consumption
U x 1 mA / phase
Current (In)
1 –5 A
Measuring range
5 mA –10 A TRMS
Overload current
2 x In continuously, 10 x In 15 s, 40 x In 1 s
Consumption
<0.05 VA / phase
Auxiliary power supply
24 –230 VDC / 90 –230 V AC ±10 %
Burden
max 7.1 W / 15 VA
Output
Serial communication
Profibus or Profinet
Profibus
DP-V0 and DP-V1 according to IEC61158 type 3
Profinet
PROFINET RT Class 1 and 3
PROFINET IRT Ethernet switch
Communication
General Data
Accuracy
0.2 (Ref. temp. 23 °C)
Galvanic isolation
Supply, in- and output are galvanically isolated
Connection terminals / Torque
Input and Auxiliary power supply: 6 mm2 / 0.8 Nm
Output: 2.5 mm2 / 0.5 Nm
Humidity
95 % non-condensing
USB
USB Micro-B, port for configuration
Temperature
-10…+55 °C (operation)
-40…+70 °C (storage)
Temperature coefficient < 0.1 % / 10 °C
Test voltage
4 kV AC /1 min
Inputs
overvoltage cat. III
Pollution degree
2
Dimension (W x H x D)
70 x 132 x 101 mm
Weight
330 gr
Protection
IP40 (housing), IP20 (terminals)
Standards
SS-EN 60688 Transducers
SS-EN 61010-1 Safety
EN 61000-6-2 / -6-4 / -6-5
*Depending on the version