EMR LX10.2 User manual

LX10.2
Voltage regulator for generators
Instruction Manual V1.2
Product version V1.1.0.0

Manual V1.2 Page 2 of 20
Warnings And Commissioning information
Revision history
The manual does not cover all technical details of the product. Specifications may be modified by
the manufacturer without notice. For further information, the manufacturer should be contacted.

Manual V1.2 Page 3 of 20
Table of contents
General description
The LX10.2 is designed for use in brushless generators and can be used as a cost effective
universal replacement for a great variety original manufacturers AVR’s.
The LX10.2 can be used for parallel operation with other generators that also control voltage
droop by means of Quadrature Droop Compensation (QDC).
Parallel operation is possible with an additional droop CT, which can be 0.5 or 1A secondary.
Installation, maintenance and adjustment don’t require special application software.
The AVR is protected from the environment by a PUR coating .

Manual V1.2 Page 4 of 20
Absolute maximum rating

Manual V1.2 Page 5 of 20
Protections

Manual V1.2 Page 6 of 20
Modes of control I
Sensing voltage Sensing voltage
Generator voltage Generator voltage

Manual V1.2 Page 7 of 20
Modes of control II
Sensing voltage Sensing voltage
Sensing voltage
+
Sensing voltage
+

Manual V1.2 Page 8 of 20
Modes of control III
Sensing voltage Sensing voltage
Max. excitation voltage
(AVR supply voltage x √2 )
Max. excitation voltage
(AVR supply voltage x √2 )
AVR supply

Manual V1.2 Page 9 of 20
Commissioning set up
Commissioning set up
Start (AVR Active / Generator running ! )
Underspeed protection
Done
Threshold underspeed
Underspeed Slowly
Until led on
Setpoint underspeed
Underspeed Very slowly
Until led off
Led not red flickering!
Nominal speed
GM
Note:
It is recommended to turn
the potentiometer a little
further clockwise,
to allow for short
frequency dips.
Indication setpoints

Manual V1.2 Page 10 of 20
Quic reference I
A D ModeMinimum Rfield
ormula
Minimum field resistance
actory settings
Sensing voltage
Underspeed frequency
Underspeed slope
Droop
Sta ility P-action
Sta ility I-action
Max. out
Dipswitch 1
Dipswitch 2
Dipswitch 3
Dipswitch 4
Dipswitch 5
Dipswitch 6
Dipswitch 7
Dipswitch 8
: 400V
: 45Hz
: Trip slope
: 100%
: 50%
: 50 %
: 100 %
: On
: Off
: Off
: On
: Off
: Off
: Off
: Off
Link: 3- 4, EX-EX
AVR field current.
Max. rating: Intermitted 12A < 10s.
Max. rating: ield forcing 20A < 1s.
Max. out Droop Underspeed Stability Voltage
(Page 6)(Page 6)(Page 6)(Page 8)
Underspeed
Coarse
Fine
- +
- +
Range 230V sensing
+/- 185 .. 290V
Range 400V sensing
+/- 315 .. 505V
+ -0% 100%0% 100% - + - +
I-action
(Integral time)
P-action
( roportional gain)
Dipswitch
ON
1234
dip
5678
400V sensing voltage.
Phase loss protection disa led.
Remote adjust ena led.
DI Off On
S-T internally shorted.1
2
3
4
5
6
7
8
Underspeed trip disa led.
Underspeed F/V curve disa led.
Buildup speed 2 sec.
Normal Integral time.
Underspeed trip voltage +/- 27.5% of Unom.
Phase loss protection ena led.
230V sensing voltage.
Underspeed trip ena led.
Buildup speed 5 sec.
Increased Integral time.
Do not place or remove link!
Inputs are for EMRI AFD.
AFD is an option unit
for dual AVR applications.
For more information
see manual AFD.
Underspeed F/V curve ena led.
Underspeed trip voltage +/- 17.5% of Unom.
(Page 5..8)
Trip @
Higher – RPM - Lower
+/- 62Hz +/- 27Hz

Manual V1.2 Page 11 of 20
Quic reference II
Exciter
0 .. 10Adc
Check
ormula
Minimum
ield Resistance
(Page 4, 10)
Max. rating: Intermitted 12A < 10s.
Exciter ield
AVR supply
Transformer
Max. rating: 20..300Vac
PMG
Max. rating: 20..300Vac
Stator
Max. rating: 20..300Vac
Auxilary windings
Max. rating: 20..300Vac
LH1 LH2 LH3 LH4 EX EX
Link
Link
Link
- +
Sensing
U-V-W
clockwise
(Page 12..15)
W
V
U
N
230V
Remote adjust
1kΩ
-
+
Max. value : 10K Max. : -10V..+10V
S
Isolated supply
(-10V .. +10V)
Rx (10kΩ ..100kΩ)
Dipswitch 1 off Dipswitch 1 off
S
0..10kΩ
Rx
Current selection
Input X1-X2
CT 0.5A
(Droopkit)
Input X1-X2
CT 1A
(Droopcat)
J1 J2
J1 J2
J1-J2 : Open J1-J2 : Link
Current sensing
J1 J2
J1 J2
J1-J2 : Open J1-J2 : Link
V phase
0.5A
V phase
1A
X1 X2 X1 X2
400V

Manual V1.2 Page 12 of 20
Wiring diagram I
AVR with PMG

Manual V1.2 Page 13 of 20
Wiring diagram II
AVR with auxilary windings (self excited)

Manual V1.2 Page 14 of 20
Wiring diagram III
AVR with transformer (self excited)

Manual V1.2 Page 15 of 20
Wiring diagram IV
AVR with generator phase supply (self excited)

Manual V1.2 Page 16 of 20
Tips and Suggestions I

Manual V1.2 Page 17 of 20
Tips and Suggestions II
ield flash with isolated battery (AVR)

Manual V1.2 Page 18 of 20
Tips and Suggestions III
ield flash with isolated battery (Exciter field)

Manual V1.2 Page 19 of 20
General installation information
Absolute Maximum Ratings
- The Absolute Maximum Ratings are those limits for the device that, if exceeded, will likely damage the device. Exceeding the
absolute maximum ratings voids any warranty and/or guarantee.
Mounting
Mounting of the product should be done in such a way that:
-the absolute maximum ambient temperature rating of the product will never be exceeded.
-maximum cooling (direction of cooling ribs and direction of airflow) is achieved.
-Mounting no humid air can flow through the product or condensation occurs.
-dust or other materials or residue will not remain in or on the product.
-the maximum vibration is not exceeded.
-personal contact with persons is impossible.
Wiring
-Diameter size of the wiring should be enough to carry the expected current. Wire insulation should be enough to withstand
the expected operating voltages and temperatures.
-To improve EMC emission and immunity, care should be taken for the lay out of the wiring. This in respect to all wiring in the
installation.
-Keep current carrying wires as short as possible.
-Keep wires carrying a total sum of zero Ampere close to each other, or in one single cable, E.g. U, V, W, or X (+) and XX (-),
or Phase and neutral, or S and T.
-Avoid current carrying conductors next to sensing or control wiring. Especially current controlled by SCR’s or PWM controlled
transistors.
-If sensitive sensing signal cables need to be laid across distance along other cabling, shielded cable is preferred. Keep the
shield as long as possible and the wiring outside the shield as short as possible. Do not solder or shrink the shield to a
regular wire. Connect the original shield to ground at one side with an as large as possible contact surface.
Additional installation information
- When the product is supplied by means of a transformer, it should never be an auto-transformer. Auto-transformers react as
voltage sweep up coil and may cause high voltage peaks.
-Standard fit capacitors or over-voltage suppressers across X (+) and XX (-), or exciter field terminals inside the generator
should be removed.
-When the product is supplied by means of a transformer, it should be able to carry at least the maximum expected current.
Advisable is, to have a transformer which can carry twice the maximum expected current. Inductive loads make voltage sacks
and peeks into the secondary voltage of a transformer, from which the device may malfunction.
-It is not recommended to apply switches in dc outputs. It is preferred to use switches in the ac supply inputs of devices. In
case it is unavoidable to have switches in the dc output of a device, action must be taken to avoid over voltage damage to the
device due to contact arcing. Use a voltage suppressor across the output.
-It is not recommended to apply switches or fuses in the sensing lines. Defects can cause high voltage situations due to over-
excitation.
-When using a step down transformer in medium or high voltage generators, the transformer should be three phase (if three
phase sensing), and the transformer should be suitable for acting as a sensing transformer. If the transformer is unloaded,
connect a resistor to avoid voltage waveform distortion.
-The phase relation from the generator to the AVR is important. Also when voltage transformers and/ or current transformers
are installed.
-When using a step down or insulation transformer in the droop circuit, phase relation from the generator to the AVR is
important.
-CT’s wiring, connected to the AVR should never be grounded.
-Always disconnect electronic products, circuits and people before checking the insulation resistance (Megger check).
-Due to differences in generators impedance’s, EMC behavior is not predictable. Therefore the commissioner / installer should
be aware of proper and correct installation.
-Large, highly inductive, exciter stator windings can cause destructive high voltage peaks. Adding a resistor from 10 to 20
times the exciter stator field resistance reduces voltage spikes. If necessary filter can be fitted additionally. (e.g. snubber, RC-
network)
-Upon problems during commissioning, faulty behavior or defects in the generator, consult the fault finding manual at our web
site
-Some advises may be overdone or seem extraordinary, but since the electrical rules are the same everywhere, these advises
are given.

Manual V1.2 Page 20 of 20
Contact
EMRI Electronics B.V.
Manufacturer
Morsestraat 10
6716 AH, Ede, Netherlands
Tel: [phone]
Fax: [phone]
Website: www.emri.nl
E-mail: [email protected]
I
CELAND,
Hafnarfjordur
Rafeining ehf
Tel: [phone]
Fax: [phone]
Website: www.rafeining.is
E-mail: [email protected]
POLAND,
Gdynia
An-Elec Sp. z o.o.
Tel: [phone]
Fax: [phone]
Website: http://an-elec.pl
E
-
mail:
info@an
-
elec.pl
INDIA,
Faridabad
Power Solutions
Tel: [phone]
Fax:: [phone]
Website: www.psolindia.com
E-mail: [email protected]
SOUTH AFRICA,
Roodepoort
Yneldo Electronics
Tel: [phone]
Fax: [phone]
Website: www.yneldo.com
E
-
mail:
[email protected]
POLAND,
Szczezin-Mierzyn
Marel Serwis
Tel: [phone]
Fax: [phone]
Website: www.marel.szczecin.pl
E-mail: [email protected]in.pl
CHILE,
Santiago
Lucio Vicencio y CIA.LTDA
Tel: [phone]
Fax:: [phone]
Website: www.luciovicencio.cl
E
-
mail:
lucio
[email protected]
NORWAY,
Bergen
Frydenbø Electric A/S
Tel: [phone]
Fax: [phone]
Website: www.frydenbo.no
E-mail: [e-mail]
SINGAPORE,
Singapore
Cyclect Electrical Engineering
Tel: [phone]
Fax: [phone]
Website: www.cyclect.com.sg
E-mail: [email protected]
THAILAND,
Bang Lamung
Semtec Maritime/Genetech Co.Ltd
Tel: [phone]
Fax: [phone]
Website: semtecmaritime.com/
Email
:
[email protected]
UNITED
ARAB
E
MIRATES,
Sharjah
KDU Technical Services
Tel: [phone]
Fax: [phone]
Website: www.kdutech.ae
E
-
mail:
[email protected]
SWEDEN,
Kungälv
Elektrisk Drivteknik EDT AB
Tel: [phone]
Tel: [phone]
Website: www.edtab.se
E
-
mail:
[email protected]
GREECE,
Piraeus
Stavros Kassidiaris S.A.
Tel: [phone]
Fax: [phone]
Website:www.kassidiaris.gr
E
-
mail:
[email protected]
CANARY ISLANDS,
Las Palmas
Zamakona Yards
Tel: [phone]
Fax: [phone]
Website: www.zamakonayards.com/
E
-
mail:
jbetanco
[email protected]
UNITED STATES,
Fort Lauderdale - Florida
North Star USA inc.
Tel: [phone]
Fax: [phone]
Website: www.northstarusa.co/
Email:
[email protected]
UNITED KINGDOM,
Stockton on Tees
MJR Controls
Tel: [phone]
Fax: [phone]
Website: www.mjrcontrols.com
Email:
[email protected]
UNITED STATES,
Kemah - Texas
Ramtec Marine Systems LLC
Tel: [phone]
Fax: [phone]
Website: www.ramtec-marine.com
Email:
waling@ramtec
-
marine.com
REPUBLIC OF PANAMA,
Panama
PASRAS S.A.
Tel: [phone]
Fax: [phone]
Website: www.pasras.com
E-mail: [email protected]
ROMANIA,
Constanta
SAMTEC SRL
Tel: [phone]
Fax: [phone]
Website: www.samtec.ro
E-mail: [email protected]