Maretron NMEA 2000 ® About NMEA 2000 ® Cables and Connectors Cables & Connectors The NMEA 2000® standard goes beyond defining message content and includes requirements for the cabling used to interconnect electronic components (referred to as the physical interface). The following catalog pages contain the NMEA 2000® approved network interconnect components used to build an operational network.
Mini NMEA 2000® Network Example (Up to 8 amps per leg) Mini Powertap Tee Mini Tee Mini/Micro Tee Field-Attachable Connectors Mini Double-ended Cordsets BUS Mini Double-ended Cordsets Mini Termination Resistor BUS Optional Shield Ground Inside V+ V+ V- V- SUPPLY Mini Termination Resistor Mini Bulk Cable 8 amps 8 amps Mini Bulkhead Feed Thru To Power Source Mini Drop-line to NMEA 2000® Component N2KMeter NMEA 2000® Diagnostic Tool Multi-Port Box Micro Drop-line to NMEA 2000® Component M
Micro/Mid FieldAttachable Connectors (Straight – Male/Female) Micro/Mid FieldAttachable Connectors (90° Male/Female) Micro bulk cable is primarily used as drop cable, but it can also be used at the trunk line depending on network power requirements. Bulk cable with field-attachable connectors allows for maximum flexibility as cables can be made on the job to exact lengths. Field-attachable connectors allow you to make field connections to bulk cable (see diagram).
Micro Bulk Cable Micro/Mid Field-Attachable Connectors (Straight) Micro/Mid Field-Attachable Connectors (90°) MALE 40 mm 1.57” 60 mm 2.36” BLACK RED 6-8mm .27” CABLE DIA. M12x1 WHITE 6-8mm .27” CABLE DIA. 44.5mm 1.75” .190±.015" BLUE Ø20.0 Ø20.0 M12x1 FEMALE END VIEW MALE END VIEW 4. White (Net-H) 1. Bare (Shield) 2. Red (Net-S) 3. Black (Net-C) 3. Black (Net-C) 5. Blue (Net-L) 5. Blue (Net-L) 4. White (Net-H) 1. Bare (Shield) Ø20.0 MALE 2. Red (Net-S) M12x1 39.4mm 1.55” 6-8mm .
Micro Double-Ended Cordsets Double-ended cordsets are used for trunk or drop lines and make for a secure connection and simple timesaving installation. The connectors are keyed for error-free connection and they are waterproof for continued operation even while submerged in the bilge.
Micro Double-Ended Cordsets 55.2 [2.17] Micro Tee 48.5 [1.91] Ø15.0 [0.59] 48.5 [1.91] 55.2 [2.17] 12x1 M12x1 55.0 [2.17] M12x1 Ø15.0 [0.59] Ø15.0 [0.59] Micro/Mid Powertap Tees M12x1 ANTI-VIBRATION DETENT ANTI-VIBRATION DETENT MALE END VIEW MALE END VIEW 4. White (Net-H) 1. Bare (Shield) 4. White (Net-H) 2. Red (Net-S) 3. Black (Net-C) 5. Blue (Net-L) 5. Blue (Net-L) 5. Blue (Net-L) 2. Red (Net-S) ANTI-VIBRATION DETENT ANTI-VIBRATION DETENT M12x1 M12x1 FEMALE END VIEW 3.
Micro Termination Resistors Two termination resistors are required on every NMEA 2000 network, one on each end of the trunk line. Normally, a male termination is used since male pins tend to point back to the power source. In cases where the gender is reversed, a female terminator may be required. The inline terminator is used where the network is terminated at a product, for example a GPS or weather station at the top of a mast.
Micro Termination Resistors Micro Bulkhead Feed-Thru 55.2 [2.17] Multiport Box (Micro-Mid Male Homerun / Micro-Mid Female Drops) 47.7 [1.88] Ø15.0 [0.59] (119.0) 3.5 TYP 17.0 29.4 [1.16] 21.3 TYPICAL 21.1 3.5 TYP GASKET M12x1 30.0 (23.0) MOUNTING HOLE M3 SOCKET HEAD 12mm MINIMUM LENGTH MALE Ø16.2 [0.64] 48.5 [1.91] Ø15.0 [0.59] Ø3.5 THRU (9x) REMOVABLE LABELS (INCLUDED) M12x1 M12x1 126.0 M12x1 M12x1 P1 M12x1 (16.0) LOCKWASHER LW-M12 J3 J4 1 2 3 4 4.5 Ø12.7 [0.50] 4.
Mid Bulk Cable (Gray/Blue) MID Mid Double-Ended Cordsets (Gray) Mid Double-Ended Cordsets (Blue) Mid bulk cable is primarily used as drop cable, but it can also be used at the trunk line depending on network power requirements. Bulk cable with field-attachable connectors allows for maximum flexibility as cables can be made on the job to exact lengths. Double-ended cordsets are used for trunk or drop lines and make for a secure connection and simple timesaving installation.
Mid Bulk Cable (Gray/Blue) Mid Double-Ended Cordsets (Gray) Mid Double-Ended Cordsets (Blue) 48.5 [1.91] 55.2 [2.17] 48.5 [1.91] 55.2 [2.17] Ø8.4 [0.33] Ø8.4 [0.33] Ø15.0 [0.59] M12x1 M12x1 Ø15.0 [0.59] M12x1 M12x1 WHITE Ø15.0 [0.59] Ø15.0 [0.59] BLUE FEMALE END VIEW MALE END VIEW .235±.010" 4. White (Net-H) RED 1. Bare (Shield) 2. Red (Net-S) 3. Black (Net-C) 3. Black (Net-C) 5. Blue (Net-L) 5. Blue (Net-L) 4. White (Net-H) 1. Bare (Shield) 1. Bare (Shield) 2.
Mini Bulk Cable (Gray/Blue) Mini Double-Ended Cordset (Gray) Mini bulk cable is primarily used as trunk cable, but it can also be used as drop lines. Bulk cable with fieldattachable connectors allows for maximum flexibility as cables can be made on the job to exact lengths. Field-attachable connectors allow you to make field connections to bulk cable. The color-coded screw terminals match the individual wire colors found within the bulk cables for error-free field installation.
Mini Bulk Cable (Gray/Blue) Mini Field-Attachable Connector (Male/Female) Mini Double-Ended Cordset (Gray) 68.5 [2.70] 65.0 [2.56] Ø27.0 [1.06] 78.5 [3.09] Ø27.0 [1.06] 7/8-16UN 7/8-16UN WHITE Ø11.3 [0.44] Ø27.0 [1.06] BLUE 10-12mm CABLE DIAMETER 7/8-16UN .295±.015" BLACK FEMALE END VIEW MALE END VIEW FEMALE RED 88.0 [3.46] Ø27.0 [1.06] .390±.010" 10-12mm CABLE DIAMETER 7/8-16 Mechanical MALE 2x15 AWG 3.
Mini Double-Ended Cordset (Blue) Mini Tees Double-ended cordsets are used for trunk or drop lines and make for a secure connection and simple timesaving installation. The connectors are keyed for error-free connection and are waterproof for continued operation even while submerged in the bilge. A Tee is used to tap into the trunk line for adding a drop connection.
Mini Double-Ended Cordset (Blue) 68.5 [2.70] Mini Tees Mini Powertap / Mini Power Cord 28.0 [1.10] CLEARANCE FOR #8 (M4) FASTENER 65.0 [2.56] 3.86 [98.0] 3.38 [86.0] 1.42 [36.0] Ø26.0 [1.02] Ø27.0 [1.06] 17.5 [0.69] 7/8-16UN 7/8-16UN 7/8-16UN 7/8-16UN 1.42 [36.0] 2.52 [64.0] BUS BUS 2.05 [52.0] Ø11.3 [0.44] SUPPLY Ø27.0 [1.06] FEMALE END VIEW MALE END VIEW NF SHIELD M4 OR .138-32 SOCKET CONNECTION HEAD SCREW 16 MM MINIMUM (2) NOT INCLUDED 7/8-16 UN 65.0 [2.56] Ø26.0 [1.02] 50.
Mini Termination Resistor (Male/Female) MINI Mini 90° Male to Female Connector Mini Male to Micro Female Reducer Termination Resistors are required on a NMEA 2000® network and are placed at each end of a network trunk cable. Like the double-ended cordsets, the termination resistors are waterproof and continue to function even while submerged in the bilge. The Mini Elbow is used in spots where it is impossible to bend a cordset around tight corners.
Mini Termination Resistor (Male/Female) Mini 90° Male to Female Connector 48.5 [1.91] Mini Male to Micro Female Reducer 7/8-16UN 2.100 [53.3] Ø26.0 [1.02] CLEARANCE FOR #8 FASTENER (M4) MALE 27.0 [1.06] 1.472 [37.4] P1 7/8-16UN 7/8-16UN Ø1.024 [26.0] 36.0 [1.42] 63.4 [2.50] 7/8-16UN 46.6 [1.83] Ø26.0 [1.02] FEMALE Ø1.024 [26.0] 7/8-16UN J1 Ø1.102 [28.0] 18.1 [0.71] M12x1 Specifications 17.5 [0.
Mini Gender Changers (Male/Male)(Female/Female) Mini Bulkhead Feed-Thru MINI Maretron cables have a male connector on one end and a female connector on the other end. Normally, the male connector points back towards the network power supply, but on some occasions, this gets reversed and a gender changer can be used to get back to the desired connector type. The Bulkhead Feed-Thru allows ease of installation through panels or bulkheads and establishes future connection points in a network installation.
Mini Gender Changers Mini Bulkhead Feed-Thru N2KMeter 73.0 [2.87] 37.3 [1.47] Electrician Mode (Simple) 49.3 [1.94] 32.7 [1.29] 7/8-16 UN 1. Plug in and set N2KMeter rotary switch to “autosearch” 2. Identify network health • Happy face = healthy 7/8-16 UN 7/8-16UN 7/8-16UN • Neutral face = nominal 28.0 [1.10] • Sad face = faulty 17.5 [0.69] SEALING GASKET LOCKNUT 19.2 [0.76] LOCK WASHER SEE NOTE 1 Expert Mode (Advanced) 27.0 [1.06] Ø26.0 [1.02] Ø26.0 [1.02] THRUST WASHER 1.
Maretron NMEA 2000 ® Network Installation Guide Installing an NMEA 2000® Network Installing an NMEA 2000® network consists of inter-connecting NMEA 2000® electronic devices using plug-and-play cables and connectors. The following pages provide a brief description of how to setup a NMEA 2000® network using five basic steps: 1. 2. 3. 4. 5.
Figure 2 Maximum Cable Length Determination opposed to Micro cable (4 amps). Mini cable has an outside diameter in the range from 0.41 to 0.49 inches. Its maximum installed bend radius is 7x the cable diameter. You can also use this type of cable for drop lines. Mid - This is commonly used for smaller networks as either the network trunk line or as drop lines.
between termination resistors. However, if the distance from a trunk line tee to the farthest device connected to the trunk line is greater than the distance from the tee to the nearest terminating resistor (TR), then you MUST include the drop line length as part of the cable length in your maximum cable distance calculation. Figure 2 shows an example where both 5 meter drops must be included in the maximum cable distance since the drops are longer than the distance from the tee to termination resistor. 1.
Figure 4 Figure 5 Mini Powertap Micro/Mid Powertap 1.7 NMEA 2000® Connectors 3. Supplying Power Connectors attach cables to devices or other components of the NMEA 2000® cable system. This allows the network to be completely “plug-and-play”. Connections can be made with pre-molded cordsets or with field-attachable connectors. The following diagram shows the pins found within Mini connector and the Micro and Mid connector and the corresponding wire colors for those pins.
Powertap can handle large loads as long as no more than 8 amps is drawn through any single segment of the trunk line. However, cable resistance may limit your application to less than 8 amps. network consists of two legs, one leg extending in each direction from the power insertion point. Figure 7 shows a middle-powered network. 3.3 Micro/Mid Power Connection The NMEA 2000® network is designed to work properly as long as there is no more than a 1.
Autopilot Speed Log Trunk Line TR 5 meters Drop Line 0.3 meters 2 loads 1 meter 1 load 20 meters 5 meters 2 meters 1 load 0.3 meters 0.3 meters 0.3 meter 2 loads Electronic Compass Depth Repeater Power from Battery 5.
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