Actisense EMU-1-BAS NMEA 2000 Engine Monitoring Unit with Analog to Digital Gateway

NMEA 2000 Engine Monitoring Unit - Analog to NMEA2000 Engine Gateway

Share engine information on the NMEA 2000 bus.

The Actisense EMU-1 is a specialized analogue to NMEA 2000 Gateway which converts data from analogue engine gauges/senders into NMEA 2000 data. The EMU-1 enables the sharing of engine data throughout the NMEA 2000 bus. It digitizes analogue engine sensors, enabling NMEA 2000 display devices to monitor the connected engine(s) on a vessel.

The EMU-1 can monitor vital engine parameters such as temperature, pressure RPM and fluid levels from up to two engines.

The EMU-1 has a PC-based configuration tool that allows the settings inside the EMU-1 to be changed to best suit the engine it is working with, making it a flexible solution for many engine makes and models.

An Actisense PC to NMEA 2000 Gateway (NGX-1/NGT-1) is required to configure the EMU-1.

The NGX-1 or NGT-1 must be used to update the firmware, connect the Toolkit and display data on a PC for diagnostic and information purposes, using NMEA Reader. Please visit the NGX-1 page and/or NGT-1 page for product details.

Features:

• Enables analogue signals to be converted to NMEA 2000 messages


• Convert signals from up to two engines (that share a common ground) with a single EMU-1


• 6 gauge / parameter inputs


• 4 alarm inputs


• 2 additional auxiliary inputs


• 2 Tacho inputs


• Customized IP65 case


• Diagnostic LEDs


• Wide power compatibility of 9 to 35VDC


• No need to change an existing engine


• Easy installation


• Easy to configure to suit the connected engine


• Connect signals from fluid level gauges (that share a common ground with the engine) to NMEA 2000


• Optional DIN rail mounting kit available


• Total engine hours are logged by the monitoring of engine Tach (RPM) input

Technical Specifications:

Power Supply

• Supply Voltage - 9 to 35VDC


• Supply Current - Typically < 25mA @ 12VDC


• Supply Protection - Continuous reverse polarity protection and load dump protection (meets SAE J1113)


• Supply Connector - Pluggable 2-way screw terminal, 3.5mm pitch


• Supply Voltage (NMEA 2000 Port) - 9 to 29VDC


• Supply Current (NMEA 2000 Port) - < 20mA @ 12VDC from NMEA 2000 bus


• Load Equivalent Number (LEN) - 1


• Supply Protection (NMEA 2000 Port) - Continuous reverse polarity protection and overvoltage protection to 40V

NMEA 2000 Port In/Out

• Compatibility - Fully NMEA 2000 certified


• Galvanic Isolation - 2500V input to ground, 1500V output to ground using ISO-Drive


• Speed / Baud Rate - 250kbps


• NMEA 2000 Connector - M12 male (A coded) connector

Gauge Inputs

• Voltage Range - 0 to 35VDC


• Input Impedance - > 50k


• Sender Feed - 0, 4 or 18mA


• Accuracy - <= 2%


• Input Connector - Pluggable 6-way screw terminal, 3.5mm pitch


• Input Protection - Overvoltage protection to 40V

Alarm Inputs

• Voltage Range - 0 to 37VDC


• Input Impedance - > 50k


• Threshold Voltage - Configurable, default is 5V


• Alarm Polarity - Configurable, default is alarm on low input


• Accuracy - <= 2%


• Input Connector - Pluggable 4-way screw terminal, 3.5mm pitch


• Input Protection - Overvoltage protection to 40V

Tacho Inputs

• Voltage Range - 3 to 60V


• Input Impedance - > 100k to ground


• Input Pulse Range - 4 to 50,000Hz


• Accuracy - <= 1%


• Sender Compatibility - Ignition coil, alternator (W, R or AC) terminal, hall effect, VR or inductive sender


• Threshold - Automatically adjusts to signal level


• Input Connector - Pluggable 4-way screw terminal, 3.5mm pitch


• Input Protection - Can withstand an ignition pulse to 500V

Engine Log

• Engine Hours - 2 separate engine hour logs internally connected to the tacho Inputs. Hours are logged when RPM is present, stored in non-volatile memory

Mechanical

• Housing Material - Polycarbonate


• Protective Lid Material - Polycarbonate


• Sealing Materials - Expanded silicone foam gasket, closed cell polyurethane splash guard and ePTFE waterproof vent


• Dimensions - 127mm (L) x 112mm (W) x 48mm (H)


• Weight - 250g


• Mounting - 4 x 3.5mm lugs to allow panel mount with self tapping s/s screws (included), optional DIN Rail mount available on request

Approvals and Certifications

• EMC - EN 60945 (sections 9 10)


• Environmental Protection - IP66 (PCB housing)


• Operating Temperature - -20C to +55C


• Storage Temperature - -30C to +70C


• Recommended Humidity - 0 93% RH


• Guarantee - 3 years

The Actisense EMU-1-BAS is a versatile NMEA 2000 engine monitoring unit designed to convert analog signals from engine gauges and sensors into NMEA 2000 data. This gateway facilitates seamless sharing of engine parameters such as temperature, pressure, RPM, and fluid levels across the vessel's NMEA 2000 network, enabling comprehensive engine monitoring on compatible displays. Its flexible configuration allows customization to match many engine makes and models without requiring modifications to existing engine wiring, providing a straightforward and reliable solution for marine engine data integration. The unit supports monitoring of up to two engines sharing a common ground, with multiple input options including gauge, alarm, auxiliary, and tachometer signals, making it suitable for a wide range of marine applications. Installation is simplified with pluggable screw terminals, optional DIN rail mounting, and a robust IP66 case for harsh environments. The EMU-1-BAS features diagnostic LEDs for troubleshooting and is powered by a wide DC voltage range from 9 to 35VDC, ensuring compatibility with various vessel electrical systems. Its galvanic isolated NMEA 2000 port complies with certification standards, providing safe and reliable data transfer at 250kbps. The device also logs engine hours via tach inputs, enabling detailed maintenance and performance tracking. Designed with durability and ease of use in mind, the EMU-1-BAS is an essential component for boat owners seeking to enhance engine data visibility and management through the NMEA 2000 network. The product comes with a 3-year guarantee, meeting environmental and electrical safety standards, and includes all necessary mounting hardware for straightforward installation.

Features:

• Converts analog engine signals to NMEA 2000 messages for seamless data sharing

• Supports monitoring of up to two engines sharing a common ground

• Six gauge/parameter inputs for temperature, pressure, fluid levels, and more

• Four alarm inputs with configurable thresholds and polarity

• Two auxiliary inputs and two tachometer inputs for comprehensive engine data

• Robust IP66 rated polycarbonate housing with protective seals for marine environments

• Wide power supply compatibility from 9 to 35VDC with reverse polarity and load dump protection

• Fully NMEA 2000 certified with galvanic isolation for safe data transmission

• Simple installation with pluggable screw terminals and optional DIN rail mounting

• Engine hour logging through tach inputs for maintenance tracking