FuelCAN FLC300
Fuel sender to J1939 CANbus interface
Installation Instructions
yi6494 revision A, 2015-06-03 section 80
Please read the following information before installing. A visual inspection of this product for damage during shipping is recommended before installation. It is your responsibility to ensure that qualified mechanical and electrical technicians install this product. If in doubt, please contact your local Murphy representative.
General Information
W A R N I N G
B EFO R E B EG IN N IN G IN STA LLATIO N O F TH IS PR O D U C T
D isconnect all electrical power to the m achine
M ake sure the m achine cannot operate during installation
Follow all safety warnings of the m achine m anufacturer
R ead and follow all installation instructions
FuelCAN is a compact interface for translating an analogue fuel level sender signal into digital SAE J1939 CANbus data.
The device allows integration of standard fuel level senders into modern ECU-based engine instrument and control systems.
Standard FuelCAN modules have three inputs (only one of which is connected at any one time): input 1 is configured for use with Murphy ES series resistive fuel level senders; inputs 2 and 3 can be used with fuel level senders having compatible resistance ranges.
fuel level / approx. resistance, Ohms
empty 1/4 1/2 3/4 full
Input 1 (Murphy) 240 147 96
Input 2 240 158 100
Input 3 10 56 95
60
58
138
33.5
30
180
FuelCAN inputs can also be factory-configured for use with non-standard fuel level or resistive senders. Please note that minimum order quantities apply for custom solutions.
A rear facing LED indicates input and CANbus status.
FuelCAN is compact and light enough to be incorporated into wiring harnesses, but can also be surface mounted via four case holes. The polycarbonate case is fully sealed in epoxy resin for high impact and environmental resistance.
These instructions relate to Murphy part numbers:
Part code Model/Description
79.70.0085 FuelCAN, no CAN terminating resistor
79.70.0095 FuelCAN, 120 Ohm CAN terminating resistor
79.70.0006 Previous code for 79.70.0095 above
FuelCAN modules with part codes other than above may include non-standard input scaling, CANbus/J1939 data parameters or wire numbers/colours – please check specifications with your Murphy representative.
Specifications
Power supply
Operating voltage, steady state: 7 to 35 VDC
Current consumption: 25mA (typ.)
Inputs
Maximum operating range: –2 to +35 VDC
Input 1 sender range, Ohms: 240 (empty) to 33.5 (full)
Input 2 sender range, Ohms: 240 (empty) to 30 (full)
Input 3 sender range, Ohms: 10 (empty) to 180 (full)
Output
CANbus:
SAE J1939 protocol, PGN65276 (00FEFC
16
), 2 sec update rate.
Source address: 0xA0
Optional 120 Ohm terminating resistor (see part codes below left).
Physical
Case material: high impact ABS, epoxy filled
Dimensions: see diagram below
Weight: approx 60g / 0.13 lb
Operating temperature: –20 to +85 °C / –4 to +185 °F
Environmental sealing: IP65, exposed lead ends
Electromagnetic compatibility: 2004/108/EC
Connection and Dimensions
(standard FLC300 shown)
In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time. MURPHY products and the Murphy logo are registered and/or common law trademarks of Enovation Controls LLC. This document, including textual matter and illustrations, is copyright protected by
Enovation Controls Ltd., with all rights reserved. © 2015 Enovation Controls Ltd. A copy of the warranty may be viewed or printed by going to http://www.fwmurphy.com/warranty.
Electrical Connection & Mounting
Electrical Connection
FuelCAN connection is via 8 colour-coded flying leads
(see diagram on page 1).
RED: Power supply positive DC
BLACK: Power supply negative DC
Connect these wires to a smooth DC power supply in the range
7 to 35 VDC. A 1 Amp anti-surge fuse is recommended in the positive DC line.
FuelCAN operates with negative earth/ground or fully insulated
DC systems. DO NOT use FuelCAN with positive earth/ground systems.
YELLOW: CANbus high
GREEN: CANbus low
Connect these wires to the engine’s CANbus, using the appropriate twisted-pair cable to J1939 specification.
Part code 79.70.0095 includes a non-removable 120 Ohm CAN terminating resistor. Part code 79.70.0085 does not include any
CAN resistor. For other FuelCAN part codes, check with your
Murphy representative.
BLACK: Sender common (negative DC)
VIOLET: Sender input 1 (Murphy)
ORANGE: Sender input 2
WHITE: Sender input 3
For best measurement accuracy, use an insulated return
(2-wire) resistive fuel level sender, e.g. (for input 1) Murphy
ES2F series. Connect one sender terminal to the appropriate
FuelCAN input lead (1, 2 or 3); connect the other sender terminal to FuelCAN’s Sender Common (black) wire.
Where a 1-wire (negative DC/ground return) sender is used, connect the black (sender common) wire to battery negative.
Mounting
FuelCAN uses an epoxy-resin filled, polycarbonate case for high impact and environmental resistance. The case is compact and light enough for inclusion in (or tie-wrapping to) an engine wiring harness; or, using the actual product as a template,
FuelCAN can be surface mounted via four M4 (0.15 in) holes
(see diagram on page 1 for approximate dimensions). The case is sealed to IP65; the exposed flying leads must use connectors appropriate for the environmental sealing required.
Operation and Maintenance
Operation
At each power up, FuelCAN checks all three inputs for an in-range sender resistance. If more than one sender is connected at power-up, FuelCAN prioritises input selection in the order 1 (Murphy), 2 then 3.
Once FuelCAN has selected a valid input, it continues to use that input until the DC power supply is cycled. FuelCAN transmits fuel level data every 2 seconds, from CAN address
0xA0. Data specification is otherwise as SAE J1939-71:
PGN 65276 (00FEFC
16
)
Message data length 8 bytes
Relevant byte #2 (fuel level)
Data page 0
PDU format 254
PDU specific 252
Resolution 0.4%/bit gain, 0% offset
Data range 0 to 100%
If a sender failure (short or open circuit) occurs during operation, FuelCAN transmits fuel level data of value
0xFE
16
(indicating ‘measurement error’).
If no valid sender is detected at power-up, FuelCAN transmits a value 0xFF
16
(indicating ‘measurement not available’) and flashes its LED in a ‘heartbeat’ pattern (two short pulses, followed by a longer pause). J1939 message PGN65275 also includes bytes for other parameters, including washer fluid level (byte #1), fuel filter differential pressure (byte #3), engine oil filter differential pressure (byte #4) and cargo ambient temperature
(bytes #5/6). For each of these parameters, FuelCAN transmits a value 0xFF
16
(indicating
‘measurement not available’).
LED operation is as follows:
LED pattern
Off
Flashing
( ‘heartbeat’ pulse on)
Flashing
(50/50% on/off)
On
Status
Power off
Power on, but all inputs open circuit
(valid sender not detected).
Power on, valid sender input, but no
CAN activity.
Power on, valid sender input and
CAN activity
Maintenance and Warranty
FuelCAN contains no user-serviceable parts. Maintenance is therefore limited to the following preventative checks:
Check that FuelCAN electrical connections are secure.
Check that the case is mounted securely, with vibration and environmental exposure minimised where possible.
The case may be wiped with a clean, damp cloth. Do not use cleaning solvents.
FuelCAN is supplied with a two year warranty on parts and workmanship. In the event of a fault or technical query, and before returning equipment, please contact your
Murphy representative for technical support.
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FuelCAN FLC300 installation instructions yi6494 revision A 2015-06-03 p2/2
