Actisense Nmea 2000 Engine Monitoring Unit - Analog To Nmea2000 Engine Gateway
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Actisense Nmea 2000 Engine Monitoring Unit - Analog To Nmea2000 Engine 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 LED’s
- 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 - > 50kΩ
- 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 - > 50kΩ
- 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 - > 100kΩ 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 - -20°C to +55°C
- Storage Temperature - -30°C to +70°C
- Recommended Humidity - 0 – 93% RH
- Guarantee - 3 years
Manufacturer Part Number: EMU-1-BAS
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Last Updated: JUNE 09 2026
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