Oceanic Systems NMEA2000 3420 User manual

NMEA2000® AC MONITOR
Part Numbers: 3420
USER MANUAL
Revision 2.00

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1 Introduction ....................................................... 2
1.1 Product Features ..............................................2
2 Installation ......................................................... 3
2.1 Unpacking the box ............................................ 3
2.2 Mounting the unit .............................................3
2.3 Connecting the NMEA2000® Cable ......................3
2.4 Connecting the sensor cables to the WAGO socket.4
2.5 AC Monitor Connections .....................................5
3 Conguration ......................................................6
3.1 Conguring Circuit Type .................................... 6
3.2 Device Instance ................................................9
4 Warranty ...........................................................11
5 Technical Support ..............................................12

INTRODUCTION
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The Oceanic Systems NMEA2000® 3420 AC Monitor is designed to monitor any AC source
including single-phase (phase A), single-phase (phase A,B), and three-phase (phase A,B,C)
This unit is designed to operate in a protected marine environment such as an engine room. It is
very important that it is installed and set up correctly according to this manual. Please read and
follow the installation and setup instructions carefully to achieve the best results.
1.2 PRODUCT FEATURES
The NMEA2000® 3420 AC Monitor has the following features:
● Inputs from AC voltage (Max 280 VAC), 200 Amp AC Current
Transformer
● User Settable Device Instance using rotary switches
● User Settable Circuit Type
● Heartbeat blue LED conrming NMEA transmission.
● NMEA2000® micro C interface plug
● Panel or DIN rail mounting option
● The unit reports AC Voltage, Current, Power, Frequency.

INSTALLATION
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2.1 UNPACKING THE BOX
You should nd the following items in the 3420 shipping box:
1 x 3420 NMEA2000® AC Monitor
1 x 3420 User Manual (This document)
1 x 3420 200 Amp AC Current Transformer
2.2 MOUNTING THE UNIT
The unit should be mounted to a at surface using 4 mounting screws. The unit dimensions and
mounting hole locations are shown on the following drawing.
Note: Mount away from sources of condensation and moisture
2.3 CONNECTING THE NMEA2000® CABLE
The unit is connected to the NMEA2000® network by the 5 way micro C socket on the front.
Carefully attach the network drop cable to this plug and hand tighten until it it is fully seated.
Take care to match the orientation of the pip inside the socket to the recess inside the drop
cable plug. The other end of the drop cable should be connected to a suitable Tee connector on
the NMEA2000® network backbone cable.

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2.4 CONNECTING THE SENSOR CABLES TO THE WAGO SOCKET
WARNING: Risk of Electric Shock
This device contains potentially hazardous voltages. Ensure that power is removed from all AC
circuit that will be connected to the AC monitor. Do not attempt to disassemble the device.
This device contains no user serviceable parts. Connecting the AC monitor must be performed
by QUALIFIED ELECTRONICS ENGINEER ONLY.
The cables from the power-source to the external sockets are connected using the 6 x 2way
WAGO Cage Clamp terminal block. The wire should be stripped for 8mm and then the cage
clamp opened with a small screwdriver in the slot above the wire connection. Then simply
insert the wire into it’s connection slot and release the cage clamp by removing the small screw
driver. This will produce a secure gas tight connection on wire sizes from 0.08 – 2.5 mm²
The terminal connections are numbered as follows:
1 2 3 4 5 6
7 8 9 10 11 12
1 2 3 4 5 6
7 8 9 10 11 12

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2.5 AC MONITOR CONNECTIONS
WARNING: Incorrect connections may result in damage to the unit and personal injury
Terminal 1 Current Transformer Phase A (2)
Terminal 2 Current Transformer Phase B (2)
Terminal 3 Current Transformer Phase C (2)
Terminal 4 Voltage Phase A Line (Fit in-line 3 Amp fuse)
Terminal 5 Voltage Phase B Line (Fit in-line 3 Amp fuse)
Terminal 6 Voltage Phase C Line (Fit in-line 3 Amp fuse)
Terminal 7 Current Transformer Phase A (1)
Terminal 8 Current Transformer Phase B (1)
Terminal 9 Current Transformer Phase C (1)
Terminal 10 No Connection
Terminal 11 Neutral
Terminal 12 No Connection

CONFIGURATION
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Switch position (when button
held 5 seconds)
AC Source and Circuit Type
1 Generator Single Phase (Phase A)
2 Generator Single Phase (Phase A, B)
3 Generator Three Phase (Phase A,B,C)
The following items can be congured on the 3420.
3.1 CONFIGURING CIRCUIT TYPE
Before the AC monitor is ready to use, the type of system you will be monitoring has to be set
up. When turning on the AC monitor for the rst time the blue LED will ash quickly to indicate
it’s not set up. The AC Monitor is set up by turning the small rotary switch with a small screw
driver to the required setting and then pressing the button for 5 seconds. Be sure to return the
switch to the correct instance setting afterwards.
Note. You can always change the set up of the AC monitor by pressing the set up button for 5
seconds. If the LED ashes quickly after the setup, it means the value of the rotary switch is
out of range.
Single Phase Connection

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Two Phase Connection

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Three Phase Connection

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3.2 DEVICE INSTANCE
It is possible to install 16 3420 AC Monitors on a NMEA2000® network so they need to each have
a unique Device Instance Address. The Device Instance of each unit is set by turning the small
rotary switch with a small screw driver. Valid Device Instances range from “0” through to “F”.
NMEA2000® Parameter Group Numbers (PGNs)
Note: The “line to line” voltage values on PGNs PGN127747, PGN127748 and PGN127749 are
calculated from “line to neutral” voltage (not available on single phase, VLL = VLN • 2 for
2-phase and VLL = VLN • for 3-phase setup).
Note: The frequency values on PGNs PGN127747, PGN127748 and PGN127749 are the same as the
system frequency. They are not measured on each phase separately.
Note: The power values on PGNs PGN127744, PGN127745 and PGN127746 are calculated from
the measured voltage and current values (P = U • I).
Type PGN No PGN Name
Monitor PGN127744 AC Power / Current- Phase A
PGN127745 AC Power / Current- Phase B
PGN127746 AC Power / Current- Phase C
PGN127747 AC Voltage / Frequency-Phase A
PGN127748 AC Voltage / Frequency-Phase B
PGN127749 AC Voltage / Frequency-Phase C
Protocol PGN126464 Tx/Rx PGN List
PGN126996 Product Information
PGN126998 Conguration Information
PGN059392 ISO Acknowledge
PGN059904 ISO Request
PGN060928 ISO Address Claim
PGN126208 Command/Request Group

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Design Standards
Electrical and Mechanical
Environmental
Parameter Comment
NMEA2000® Level B
Maritime Nav and RadioComm Equipment IEC60945
CE and FCC Electromagnetic Compatibility
Parameter Value Comment
Operating Voltage 9 to 28 Volts DC Voltage
Power Consumption 50mA Average Operating
Load Equivalence Number 1LEN
Reverse Battery Protection Yes Indenately
Load Dump Protection Yes SA E J1113
Size mm 96 x 84 x 35
Weight gr 120
Parameter Value
IEC 60954 Classication Protected
Degree of Protection IP40
Operating Temperature -25°C to 50°C
Storage Temperature -40°C to 70°C
Relative Humidity 93%RH @40° per IEC60945-8.2
Vibration 2-13.2Hz @ ±1mm, 13.2-100Hz @ 7m/s2 per IEC 60945-8.7
Electromagnetic Emission Conducted and Radiated Emission per IEC 60945-9
Electromagnetic Immunity Conducted, Radiated, Supply, and ESD per IEC 60945-10
Safety Precautions Dangerous Voltage, Electromagnetic Radio Frequency per IEC 60945-
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WARRANTY
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Oceanic Systems warrants this product to be free from defects in materials and workmanship for
one year from the date of original purchase. If within the applicable period any such products shall
be proved to Oceanic Systems satisfaction to fail to meet the above limited warranty, such products
shall be repaired or replaced at Oceanic Systems option. Purchaser’s exclusive remedy and Oceanic
Systems sole obligation hereunder, provided product is returned pursuant to the return requirements
below, shall be limited to the repair or replacement, at Oceanic Systems option, of any product not
meeting the above limited warranty and which is returned to Oceanic Systems; or if Oceanic Systems
is unable to deliver a replacement that is free from defects in materials or workmanship, Purchaser’s
payment for such product will be refunded. Oceanic Systems assumes no liability whatsoever for
expenses of removing any defective product or part, or for installing the repaired product or part or
a replacement therefore or for any loss or damage to equipment in connection with which Oceanic
Systems products or parts shall be used. The foregoing warranties shall not apply with respect to
products subjected to negligence, misuse, misapplication, accident, damages by circumstances
beyond Oceanic Systems control, to improper installation, operation, maintenance, or storage, or to
other than normal use or service.
THE FOREGOING WARRANTIES ARE EXPRESSLY IN LIEU OF AND EXCLUDES ALL OTHER EXPRESS
OR IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND OF FITNESS FOR A PARTICULAR PURPOSE.
Statements made by any person, including representatives of Oceanic Systems, which are inconsistent
or in conict with the terms of this Limited Warranty, shall not be binding upon Oceanic Systems
unless reduced to writing and approved by an ofcer of Oceanic Systems.
IN NO CASE WILL OCEANIC SYSTEMS BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES,
DAMAGES FOR LOSS OF USE, LOSS OF ANTICIPATED PROFITS OR SAVINGS, OR ANY OTHER LOSS
INCURRED BECAUSE OF INTERRUPTION OF SERVICE. IN NO EVENT SHALL OCEANIC SYSTEMS
AGGREGATE LIABILITY EXCEED THE PURCHASE PRICE OF THE PRODUCT(S) INVOLVED. OCEANIC
SYSTEMS SHALL NOT BE SUBJECT TO ANY OTHER OBLIGATIONS OR LIABILITIES, WHETHER ARISING
OUT OF BREACH OF CONTRACT OR WARRANTY, TORT (INCLUDING NEGLIGENCE), OR OTHER THEORIES
OF LAW WITH RESPECT TO PRODUCTS SOLD OR SERVICES RENDERED BY OCEANIC SYSTEMS, OR ANY
UNDERTAKINGS, ACTS OR OMISSIONS RELATING THERETO.
Oceanic Systems does not warrant that the functions contained in any software programs or products
will meet purchaser’s requirements or that the operation of the software programs or products will
be uninterrupted or error free. Purchaser assumes responsibility for the selection of the software
programs or products to achieve the intended results, and for the installation, use and results
obtained from said programs or products. No specications, samples, descriptions, or illustrations
provided by Oceanic Systems to Purchaser, whether directly, in trade literature, brochures or other
documentation shall be construed as warranties of any kind, and any failure to conform to such
specications, samples, descriptions, or illustrations shall not constitute any breach of Oceanic
Systems limited warranty.
WARRANTY RETURN PROCEDUREe
To apply for warranty claims, contact Oceanic Systems or one of its dealers to describe the problem
and determine the appropriate course of action. If a return is necessary, place the product in its
original packaging together with proof of purchase and send to an Authorized Oceanic Systems
Service Location. You are responsible for all shipping and insurance charges. Oceanic Systems will
return the replaced or repaired product with all shipping and handling prepaid except for requests
requiring expedited shipping (i.e. overnight shipments). Failure to follow this warranty return
procedure could result in the product’s warranty becoming null and void.
Oceanic Systems reserves the right to modify or replace, at its sole discretion, without prior
notication, the warranty listed above.

TECHNICAL SUPPORT
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If you require technical support for any Oceanic Systems products you can reach us using any of
the following ways:
● Tel (UK): [phone]
● Tel (USA): [phone]
● Fax: [phone]
●Email: [e-mail]
●Web: www.osukl.com
● Post: Oceanic Systems (UK) Ltd
Unit 10-11 Milton Business Centre
Wick Drive, New Milton, Hampshire BH25 6RH
Oceanic Systems (UK) Ltd
Unit 10 -11 Milton Business Centre, Wick Drive,
New Milton, Hampshire, BH25 6RH, United Kingdom
Tel (UK): [phone] Tel (USA): [phone]
Fax: [phone] Email: [e-mail]
Web: www.osukl.com
Copyright © 2019 Oceanic Systems (UK) Ltd. All rights reserved. Our policy is one of continuous product improvement so
product specications are subject to change without notice. Oceanic Systems products are designed to be accurate and
reliable. However, they should be used only as aids to vessel monitoring, and not as a replacement for traditional navigation
and vessel monitoring techniques. NMEA2000® is a registered trademark of the National Marine Electronics Association.