The Actisense EMU-1 is a specialized analogue to NMEA 2000 Gateway which converts data from analogue engine senders into NMEA 2000. The EMU-1 enables NMEA 2000 display devices to monitor the engine on a vessel.

 

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. Capable of measuring a wide range of engine parameters, the EMU-1 reports how the engine is operating and shares the information across the network.

 

Designed to simplify the conversion of analogue engine parameters (e.g. Temperature, pressure and RPM) into NMEA 2000 engine PGNs, the EMU-1 simplifies processes and reduces the number of input/output wires required at each engine. Additionally, the EMU-1 also supports the conversion of analogue transmission parameters and battery status to the associated NMEA 2000 PGN's.

 

The two-part screw terminal connection system allows for an easy pluggable connection to an engine wiring harness.

 

Multiple engines are supported by the setting of the engine instance using the EMU-1 configuration tool. Currently one EMU-1 per engine is supported. Support for multiple engines on a single EMU-1 is currently planned as a future firmware update.  

 

The customized case ensures that the electronics are sealed while allowing quick access to the electrical connections.

 

An optional DIN rail mounting kit is also available. The kit is suitable for use with a top hat rail, type EN 50 022 or a G section rail, type EN 50 035. Please order the DIN rail kit using part number: DIN-KIT-1.

 

It is recommended that an Actisense NGX-1 NMEA 2000 Gateway is available for every EMU-1 installation as the EMU-1 can not be configured without one. The NGX-1 can also be used to update the Firmware, connect the Configuration Tool and display data on a PC for diagnostic and information purposes, using NMEA Reader. Please visit the Actisense Engine Monitoring Solution 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
• 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

Ordering Information

(Part number/s)

• EMU-1

CONFIGURATION INFORMATION

Every EMU-1 MUST be configured to work with each installation. 

NETWORK DIAGRAM

TECHNICAL SPECIFICAIONS

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
Warranty	Manufacturer's 3 years

 

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