BEFORE BEGINNING INSTALLATION OF THIS PRODUCT
Disconnect all electrical power to the machine
Make sure the machine cannot operate during installation
Follow all safety warnings of the machine manufacturer
Read and follow all installation instructions
WARNING
Description
MeCAN™ is a compact, encapsulated interface module that
translates resistive sender, fault switch and speed signals into
SAE J1939 CANbus data. MeCAN allows quick and simple
integration of ‘mechanical’, non-ECU engines into modern
CANbus systems. Applications include the retrofit of older
engine fleets with digital instruments, controls and telemetry,
and the development of standard control panels for both ECU
and non-ECU engines.
MeCAN has four inputs. Two inputs are for oil pressure and
coolant temperature sensing, either by fault switches or resistive
senders. One input is for engine speed sensing, using a
magnetic pickup or charge alternator. Input signals are
translated into SAE J1939 CANbus messages with appropriate
PGN address, data scaling and transmission rate.
A fourth input is for the connection of a speed calibration
potentiometer during setup mode only. DIP switches allow
selection of normal/setup mode and two speed input ranges.
An LED gives indication of operating mode and CANbus
activity.
Two standard versions allow use with a speed input and
either fault switches or Murphy ES series resistive senders:
part number
model/description
79.70.0014
MEC300-1 MeCAN I/O module, for use with
Murphy ES pressure & temperature senders
79.70.0020
MEC300-2 MeCAN I/O module, for use with
pressure & temperature switches (closing to
negative DC on fault)
Custom solutions are also available for non-standard, volume
OEM requirements.
MeCAN is compact and light enough for inclusion in many
wiring harnesses, but can also be surface mounted via four
fixing holes. The case is fully sealed in epoxy resin for high
impact and environmental resistance.
MeCAN™
Mechanical Engine to CAN J1939 interface
Installation Instructions
00-02-0665
28th November 2008
catalogue section 78
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
Product specification
power supply:
MEC300-1
(79.70.0014)
MEC300-2
(79.70.0020)
operating voltage
7 to 35 VDC
current consumption
25mA (typ.)
Inputs:
max. operating range
–2 to +35 VDC
oil pressure, coolant temp
sender, Murphy
ES series
switch, closed to
negative on fault
speed input
10 – 60 VAC peak,
adjustable 10 – 180 pulses per rev
speed calibration
0 – 5 kOhm potentiometer
output:
CANbus
SAE J1939 protocol,
120 Ohm terminating resistor fitted.
physical:
case material
high-impact ABS, epoxy filled
case dimensions (l x w x h)
100 x 25 x 15 mm / 4.0 x 1.0 x 0.6 in
weight
approx. 60g / 0.13 lb
operating temperature
–20°C to +85°C / -4°F to +185°F
environmental sealing
IP65 case (with DIP switch film
intact), exposed lead ends
electromagnetic compatibility
2004/108/EC
Connection & dimensions
