Wozniak RC Tech KLW203 mini User manual

User's Manual
Energy Meter with Limiter
Model KLW203
mini, midi, strong
Software version 1.2
TM
www.woznia rctech.com
form: 2019/02/001#0 Rev. 1.1
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WOZNIAK
RC TECH

Table of Contents
1.Safety Precautions.....................................................................................................2
2.Introduction...............................................................................................................3
3.Specifications.............................................................................................................
.Getting started............................................................................................................5
5.Menu..........................................................................................................................6
6.Limiter.......................................................................................................................7
7.Warranty....................................................................................................................7
Copyright © 2019 by Klaudiusz Woźniak Vcc. All rights reserved. No part of this manual may be
reproduced or transmitted in any form or by an means, analog, digital, electronic or mechanical,
including imaging, photocopying and recording, for any purpose other than the purchaser's personal
use without the written permission of Klaudiusz Woźniak Vcc.
1. Safety Precautions
•Before starting please carefully read entire User's Manual to ensure safe product use.
•High power electrical systems e.g. RC model's equipment pose dangers and it is the user's
responsibility to be familiar with these dangers and take any necessary action to ensure safe
use. Shorting a rechargeable battery can supply huge currents and have serious
consequences including explosions, causing fire, damage to equipment and personal injury.
•This product is designed to be safe to use when operated within the parameter limits it was
designed for. Typical applications are well within these limits, but it is the user's
responsibility to be familiar with the product specifications and ensure the unit is operated
within its limits.
•The current measured by the device may have a very large value. Poor connections may
cause large increase of temperature and risk of personal injury, fire and property damage.
The user must be familiar with the relevant methods, procedures and connection
components. It is suggested that any connectors and wires chosen for use be appropriately
sized and rated for the intended application and attached in the manner recommended by
their respective manufacturers.
•Before connecting a battery or power source it is necessary to verify polarity and there are
no exposed wires or connectors at risk for a short circuit.
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2. Introduction
Energy Meter and Limiter KLW203 was designed for R/C boats with special needs such
as high current consumption, water resistance. During production we use potting process, a
complete electronic assembly is filled in a vacuum with a solid compound. The device maintains
high measurement accuracy even after sinking.
The device has a double function. Energy Meter shows in real time the amount of
energy consumed. Limiter after reach the programmed limit of energy reduce the throttle demand to
the ESC. The device allows to program four different energy limits. Switching between them is
done by short pressing the SET button. The ramp time, throttle minimum and limit time could be
programmed.
The KLW203 is a perfect solution for training and competitions. During training user
can set any value of energy limit and see how many energy consumed. During competitions limiter
is programmed and the keyboard socket is sealed with a non-removable sticker, user can’t change
settings.
If the energy limits will be updated by NAVIGA, there is no need to return the device to
the manufacturer or to buy a programmer. The change can be made yourself from the menu by
holding down the SET button for a longer time.
Features:
●Current measurement up to 300 A.
●Minimal power loss by the use of silicone connecting cables with a cross section area up to
10 AWG (5.3 mm2) and sensor resistor down to 0.0001 Ω.
●High waterproof, IP67.
●No need a special programmer and additional switch button
●High accuracy.
●Clear LED display.
●Double function: energy meter and limiter.
●Fast changing a limit value, values are stored in the memory
●High credibility, value of the programmed limit and other parameters could be shown on
display at any time.
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3. Specifications
General specifications table:
Battery voltage: 0 – 5 VDC
Supply current: 16 mA
Measured energy: 0 - 357 Wh
Energy resolution: 0,1 Wh
Energy accuracy: +/- 1 %
Sampling frequency: 333 Hz
Starting current threshold IS : 0 – 5 A (midi, strong), 0 – 2 A (mini)
Ramp time tR: 0 - 30 s
Throttle minimum ThMIN: 0 - 99 %
Limit time tL: 0 - 999 s
Minimum Pulse width tPWM: 0,8 - 1,6 ms
Display: 6 x32, OLED
Nominal Operating Conditions: 0 – 50 ºC ambient temperature, IP67
Comparison specifications table:
Parameter KLW203mini KLW203midi KLW203strong
Current: 30 A (CONTINUOUS)
60 A (PEAK)
70 A (CONTINUOUS)
200 A (PEAK)
100 A (CONTINUOUS)
300 A (PEAK)
Energy accuracy threshold: 0,6 A 2 A 3 A
Series resistance: 0,001 Ω0,00015 Ω0,0001 Ω
Connection current cable: 1 AWG 12 AWG 10 AWG
REC, ESC cable: 0,13 mm20,13 mm20,33 mm2
Dimensions (without cables): 32x21x8 mm 32x21x8 mm 32x21x10 mm
Weight: 18 g 22 g 32 g

4. Getting started
4.1. Ma ing connections
●The current is measured by BLACK cable, current flow from ESC- to B- cable.
Connect this cable between battery negative and ESC negative terminal.
●The voltage is measured by RED B+ cable. Connect this cable to battery positive
terminal, you may use balancer connector.
●The device measure the energy consumption of the connected load and itself.
●Do not leave the device connected to the battery unattended. Long-term connection to
the battery can lead to excessive discharge and its destruction.
ATTENTION:
When connecting, pay special attention to the polarity. Blac or brown wire - Negative pole (-)
Red wire - Positive pole (+). Yellow wire – PWM Signal.
The keyboard socket is waterproof (gold plated) but after sinking, the current may flow
from the battery and the electrolysis could destroy it. It is recommended to seal a socket with tape .
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B +
B -
ESC -
BATT RY
BLACK
R D
ELECTRONIC
SPEED
CONTROL
(ESC)
MOTOR
RECEIVER
SERVO
SERVO
SC
R C
KILL SWITCH

5. Menu
Push button Hold button
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Energy [Wh]
Energy limit[Wh]
MODE/+
MODE/+
Energy limit[Wh]
Choose
energy limit
Set energy limit
no. 1
SET MODE/+
SET
Ramp time [s]
Throttle
minimum [%]
Set throttle
minimum
SET
Limit time [s]
Minimum pulse
width [10*us]
Set minimum
pulse width
SET
SET
SET
SET
SET
Set start current
threshold
Start current
threshold
Set ramp time
SET
Set limit time
SET
Last result
Energy[Wh]
Software
version
Set energy limit
no. 4
MODE/+
SET
SET
SET
Energy reset
SET
Voltage [V]
Current [A]
Maximum current [A]
MODE/+
MODE/+
MODE/+
SET
SET
MODE/+
MODE/+
MODE/+
MODE/+
MODE/+
MODE/+
MODE/+
MODE/+
Maximum current
reset
SET

6. Limiter
Limiter counts energy when current is greater than set in Starting current threshold, so
you can skip energy counting while the model is being prepared for start. Limiter after reach the
programmed limit of energy reduce the throttle demand to the ESC. The parameters of the reduction
are programmable. Figure below explains them.
In order to reset the energy value, the device should be completely disconnected from
the power supply and wait 1 - 2 minutes. This process should be carried out before each new start,
so that the energy value is counted from 0. Resetting the energy value can also be done by holding
the SET button for approx. 1 second, only possible if the button socket is not sealed, eg during
training. When the power supply is connected, the value of the last energy value blinks on the
display for seconds, it does not affect the new measurement.
The device to determine the value of percent energy reduction need to know minimum
and maximum pulse width of signal controling ESC. The maximum pulse width (maximum power)
is determined automaticly as a maximum pulse width since turn on the device. The minimum pulse
width could be determined automaticlly or set manually by menu option tPWM. To select the
automatic mode set "---", the pulse width will be measured with KLW203 turn on. The transmitter
must be switched on in advance and the throttle set to minimum. To select the manual mode, enter
the pulse width value in 10*us. For example to set 1 ms enter value 100.
The Ma imum current is the maximum value calculated from the averaged series of 256
samples (0,8 seconds). This parameter is useful, for example, when choosing the right speed
controller.
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7. Warranty
This device is covered by a 2 -month manufacturer's warranty.
At the time of any problems with proper functioning, first contact the store where the product was
purchased, showing the purchase receipt, accurately describing the symptoms noted. The defects
discovered during the guarantee period will be free of charge removed within 1 working days from
the date of delivery to the manufacturer and the warranty period is extended by the repair duration.
During the warranty period, the damaged product will be repaired or replaced free of charge by the
guarantor for the same fault-free. If the repair or replacement of the device is not possible, the
claimant is entitled to a refund of the amount paid.
The warranty does not cover mechanical damage to the product as well as the consequence of such
defects resulting from the user's fault. The warranty also does not apply if the product is not used
for its intended purpose, confusion of polarity, supply voltage higher than stated, failure to comply
with instructions contained in the user manual, self tampering, obvious negligence, short circuit, use
in the system the faulty element and other, not directly caused by the fault of the manufacturer. This
warranty does not exclude, limit or suspend the buyer's rights under the law.
The manufacturer is not liable for any damage caused by using the device contrary to its intended
use or inappropriate handling.
The manufacturer reserves the right to make changes in the product design without reservation and
without notification to its users.
This symbol on the equipment and / or its documentation indicates that such waste can
not be disposed of with other household waste in the European Union (EU Directive
2002/96 / EC). To ensure the proper conditions for the product to be recovered or
recycled, it should be left at the collection points for this type of waste, where it will be
free of charge. For information on the correct disposal of used electrical and electronic
equipment, please contact the municipal administration or the seller of the appliance. By
disposing of worn-out equipment you contribute to protecting the environment.
Manufacturer
WWW: http://www.wozniakrctech.com
e-mail: [email protected]
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