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EMU-1 NMEA 2000® Engine Monitoring Unit

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 digitises 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.

Where To Buy

NMEA 2000 Certified logo

Fully NMEA 2000 Certified

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 (NGT-1) is required to configure the EMU-1.

The NGT-1 can 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 NGT-1 page for product details.

Ordering Information

(Part number/s)

  • EMU-1

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
  • Customised IP65 case
  • Diagnostic LED’s
  • Wide power compatibility of 9 to 35 Vdc

BENEFITS

  • 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
Power Supply
Supply Voltage 9 to 35V DC
Supply Current Typically < 25mA @ 12V DC
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 29V DC
Supply Current (NMEA 2000 Port) < 20mA @ 12V DC 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 35V DC
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 37V DC
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
Fully NMEA 2000 Certified
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
  • Enables analogue gauge/sender information to be converted to NMEA 2000® messages
  • Supports up to two engines with a single EMU-1
  • Six gauge/parameter inputs
  • Four alarm inputs
  • Two Tach inputs
  • Supports 12V and 24V systems
  • Bulkhead mount, with optional DIN rail mount kit
  • Total engine hours are logged by the monitoring of engine Tach (RPM) input
  • PC based configuration tool for customised installation
  • Connect signals from fluid level gauges to NMEA 2000®

NETWORK DIAGRAM

 

NEW EMU-1 FIRMWARE IS AVAILABLE:
To upgrade to 1.037 firmware, download and install the latest version of Toolkit from our ‘Useful Downloads’ link below.

Actisense is dedicated to providing up-to-date software and resources for our products. Here are some useful tools and documentation to help you make the most of your product:

FAQ

Here are some Frequently Asked Questions about the EMU-1.

Need more help? Visit our Support Centre.

NMEA 2000 Certified logo

Fully NMEA 2000 Certified

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 (NGT-1) is required to configure the EMU-1.

The NGT-1 can 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 NGT-1 page for product details.

Ordering Information

(Part number/s)

  • EMU-1

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
  • Customised IP65 case
  • Diagnostic LED’s
  • Wide power compatibility of 9 to 35 Vdc

BENEFITS

  • 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
Power Supply
Supply Voltage 9 to 35V DC
Supply Current Typically < 25mA @ 12V DC
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 29V DC
Supply Current (NMEA 2000 Port) < 20mA @ 12V DC 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 35V DC
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 37V DC
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
Fully NMEA 2000 Certified
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
  • Enables analogue gauge/sender information to be converted to NMEA 2000® messages
  • Supports up to two engines with a single EMU-1
  • Six gauge/parameter inputs
  • Four alarm inputs
  • Two Tach inputs
  • Supports 12V and 24V systems
  • Bulkhead mount, with optional DIN rail mount kit
  • Total engine hours are logged by the monitoring of engine Tach (RPM) input
  • PC based configuration tool for customised installation
  • Connect signals from fluid level gauges to NMEA 2000®

NETWORK DIAGRAM

NEW EMU-1 FIRMWARE IS AVAILABLE:
To upgrade to 1.037 firmware, download and install the latest version of Toolkit from our ‘Useful Downloads’ link below.

Actisense is dedicated to providing up-to-date software and resources for our products. Here are some useful tools and documentation to help you make the most of your product:

FAQ

Here are some Frequently Asked Questions about the EMU-1.

Need more help? Visit our Support Centre.

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