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
This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.
The Actisense EMU-1-BAS is a versatile NMEA 2000 engine monitoring unit designed to convert analog engine signals into digital data for seamless integration on the NMEA 2000 network. This gateway allows boat owners and technicians to share vital engine information such as temperature, pressure, RPM, and fluid levels from up to two engines, providing comprehensive real-time monitoring without the need to modify existing engine systems. Its plug-and-play design simplifies installation, making it suitable for a wide range of engine makes and models. The EMU-1-BAS digitizes analog signals from gauges and sensors, translating them into NMEA 2000 messages that can be displayed on compatible navigation and monitoring systems.
Equipped with six gauge/parameter inputs, four alarm inputs, and two auxiliary channels, the EMU-1-BAS offers extensive flexibility for monitoring various engine parameters. The device features Tacho inputs for engine hours logging and supports signals from ignition coils, alternators, hall effect sensors, VR, or inductive senders. Its IP66-rated polycarbonate housing ensures durability in harsh marine environments, while diagnostic LEDs facilitate troubleshooting. The unit operates on a wide power supply range of 9 to 35VDC, with reverse polarity and load dump protection to ensure reliability. Optional DIN rail mounting kits are available for versatile installation options.
Configuration and firmware updates are managed via a PC-based tool using an Actisense NMEA 2000 Gateway (NGX-1 or NGT-1), enabling users to customize settings for specific engine configurations and perform diagnostics. The EMU-1-BAS adheres to strict certifications, including EN 60945 EMC standards and IP66 environmental protection, making it suitable for demanding marine conditions. Its compact design, combined with robust electrical protections and comprehensive monitoring capabilities, makes the Actisense EMU-1-BAS an essential tool for enhancing engine diagnostics and vessel safety on recreational and commercial boats alike.
Features:
- Converts analog engine signals to NMEA 2000 messages for integrated vessel monitoring
- Supports up to two engines sharing a common ground
- Six gauge/parameter inputs for temperature, pressure, fluid levels, etc.
- Four alarm inputs with configurable threshold and polarity
- Two auxiliary inputs for additional sensor data
- Two Tacho inputs for engine RPM and engine hours logging
- Robust IP66 polycarbonate housing suitable for marine environments
- Wide power supply range of 9 to 35VDC with reverse polarity and load dump protection
- Simplified installation with optional DIN rail mounting kit
- PC-based configuration tool for custom settings and firmware updates
- Galvanic isolation on NMEA 2000 port for electrical safety
- Supports signals from various engine sensors including ignition coils and hall effect sensors
- Diagnostics LEDs for easy troubleshooting
- Meets EMC standards EN 60945 for marine navigation equipment
