Yacht Devices YDTA-04N User manual

User Manual
Tank Adapter YDTA-04
also covers models
YDTA-04N
Firmware version
1.00
2021

© 2021 Yacht Devices Ltd. Document YDTA04-001.February 15, 2021. Web: http://www.yachtd.com/
Yacht Devices Tank Adapter YDTA-04 is certied by the National Marine
Electronics Association.
NMEA 2000® is a registered trademark of the National Marine Electronics
Association. SeaTalk NG is a registered trademark of Raymarine UK Limited.
Garmin® is a registered trademark of Garmin Ltd.

Contents
Introduction 4
Warranty and Technical Support 5
I. Product Specication 6
II. Installation and Connection of Device 8
III. LED Signals 15
IV. Device Conguration and Settings 16
V. Conguration with Presets (Button) 18
VI. Conguration with Installation Description Strings 20
VII. Digital Switching 27
VIII. Firmware Updates 32
Appendix А. Troubleshooting 34
Appendix B. NMEA 2000 Messages Supported by Device 36
Appendix Appendix C. Digital Switching with NMEA 2000 Bridge 38
Package Contents
Device 1 pc.
Screws 2 pc.
This Manual 1 pcs.
Paperclip for reset 1 pcs.
NMEA 2000 Drop Cable not supplied

— 4 —
Introduction
The NMEA 2000 Tank Adapter YDTA-04 (hereinafter Adapter or Device) allows you to connect an existing
resistive or voltage-output type uid level sensor installed on a tank and display the uid level on NMEA
2000 devices, including chart plotters and instrumental displays.
The Adapter can be congured to report one of the 15 uid types dened in the NMEA 2000 standard,
including Diesel Fuel, Gasoline Fuel, Oil, Fresh Water, Waste Water, Black Water (Sewage), or Live Well.
The Device can be used with European (10 to 180 Ohm range), American (240 to 33 Ohm range) or Japanese
(0 to 310 Ohm range) standard uid level sensors as well as with any nonstandard sensors with maximum
resistance less than 400 Ohm. The Device can also be used with uid level sensors, which output an analog
voltage signal in the range of 0 to 16 Volts.
The Adapter can be installed as a standalone measuring device, in parallel with an existing analog gauge
(2-coils and 1-coils gauges are supported), or in parallel with a Volvo Penta engine’s MDI (Mechanical Diesel
Interface) box. The four measuring channels of the Device may have individual settings. Fluid tank level
sensor readings can be calibrated with 12 calibration points to get accurate readings on tanks of any shape.
The Adaptor can switch the load channels of NMEA 2000 digital switching equipment on or o. Up to eight
dierent conditions for each measuring channel can be used.
Firmware updates are available only with Yacht Devices gateways (Wi-Fi, USB or Ethernet), see Section
VIII for details.
The Device is powered from the NMEA 2000 network and provides high voltage galvanic isolation between
NMEA 2000 and sensor inputs.
We thank you for purchasing our Devices and wish you happy voyages!
The Device is equipped with a hidden button that allows switching among 15 conguration
presets (see Section V). However, for advanced conguration (calibration curves, digital
switching functions, connection in parallel with analog gauges, using voltage sensors)
the NMEA 2000 PC gateway (from any manufacturer) or MFD which allows editing of
installation description strings (see Section VI) is required.

— 5 —
Warranty and Technical Support
1. The Device warranty is valid for two years from the date of purchase. If a Device was purchased
in a retail store, the sale receipt may be requested when applying for a warranty claim.
2. The Device warranty is terminated in case of violation of the instructions in this Manual, case
integrity breach, or repair or modication of the Device without the manufacturer’s written
permission.
3. If a warranty request is accepted, the defective Device must be sent to the manufacturer.
4. The warranty liabilities include repair and replacement of the goods and do not include
the cost of equipment installation and conguration, as well as shipping of the defective Device
to the manufacturer.
5. Responsibility of the manufacturer in case of any damage as a consequence of the Device’s operation
or installation is limited to the Device cost.
6. The manufacturer is not responsible for any errors and inaccuracies in guides and instructions
of other companies.
7. The Device requires no maintenance. The Device’s case is non-dismountable.
8. In the event of a failure, please refer to Appendix A before contacting technical support.
9. The manufacturer accepts applications under warranty and provides technical support only
via e-mail or from authorized dealers.
10. The contact details of the manufacturer and a list of the authorized dealers are published on our
website: http://www.yachtd.com/

— 6 —
I. Product Specification
Figure 1. Drawing of Tank Adapter YDTA-04N

— 7 —
Device parameter Value Unit
Supply voltage (from NMEA 2000 network) 7..16 V
Current consumption (from NMEA 2000 network), avg./max 51 / 62 mA
Load Equivalency Number 2 LEN
Galvanic isolation between NMEA 2000 interface and sensor inputs 2500 V
RMS
Number of measurement channels 4
Maximum voltage on sensor and gauge reference voltage inputs 16 V
Voltage output sensor supported range 0..16 V
Fluid level sensors resistance range 0..400 Ohm
Analog gauge coils resistance range 0..10 000 Ohm
Sensor resistance/voltage measurement accuracy ±1 %
Device case dimensions (LxWxH) 85 x 46 x 29 mm
Weight 50 g
Operating temperature range -20..55 °С
Yacht Devices Ltd declares that this product is compliant with the essential requirements of EMC
directive 2004/108/EC.
Dispose of this product in accordance with the WEEE Directive. Do not dispose of electronic refuse
with domestic or industrial waste.

— 8 —
II. Installation and Connection of Device
All connections should be made when the power is cut o at the circuit breaker. This will
protect against accidental short circuits during installation.
Connect the Device to the tank level sensor before making the connection to the NMEA 2000
network. This will protect against accidental sparks which can be hazardous when working
with fuel tanks.
The Device requires no maintenance. When deciding where to install the Device, choose a dry mounting
location. Despite the fact that the Device’s case is waterproof, its wire terminals are open, and seawater can
cause corrosion or a short circuit. Do not place the Device where it can be ooded by water, get wet in rain
or be sprayed by water.
The Device has two mount holes (see Section I), 4 mm in diameter. Use the supplied screws to x the Device
on a at surface. The orientation is not important. However, when the holes of wire terminals are pointing
down, they are better protected from occasional spray.
1. Tank level sensor connection
The Device has four measurement channels (A, B, C, D) which share a common electrical ground (two
Ground wire terminals, labeled as GND, are connected inside and galvanically isolated from the NMEA
2000 ground).
The channel contains two individual inputs: a sensor input (labeled as SENS), which should be connected
to the tank sensor, and a voltage reference input (labeled as VREF), used in parallel connection with analog
gauges.
Dierent channels may have dierent connection schemes and settings. In this section, we will show an
example of the possible connections for one channel, and channel name will be omitted on the drawings.

— 9 —
1.1 Standalone sensor connection
If you do not have a gauge connected to your tank level sensor (e. g. you have installed the sensor yourself),
you should connect only two wires to the Adapter: from SENS to the sensor «Signal» or «+» output and
from GND to sensor «Ground» or «−». The VREF input should be left unconnected. The CONNECTION
setting for the channel should be set to RESISTIVE (refer to Section VI); this is the factory setting.
1.2 Sensor for Volvo engines with MDI unit
If the fuel tank level sensor is connected to the Volvo engine MDI (Mechanical Diesel Interface) unit, you
can connect the Adapter in parallel with the MDI unit «Fuel level» input: the SENS terminal should be
connected to MDI pin 11 (or the sensor’s Green wire) and GND terminal to the MDI pin 12 (or sensor
Green/Black wire). VREF terminal should be left unconnected. You should also congure the channel and
set the CONNECTION setting to MDI (refer to Section VI).

— 10 —
Figure 1. Standalone sensor connection (left) and connection in parallel with Volvo MDI unit (right)
1.3 Connection in parallel with an existing analog gauge
An analog gauge connected to your tank level sensor can be of two types: with one measuring coil (the gauge
has only two terminals) or with two measuring coils (the gauge has three terminals).
You may have a «combined» gauge equipped with several buttons (see Figure 2), one of which activates
measurement of the tank level. The Adapter detects whether the button pressed or not, and this does not
aect the measurement results.