Murphy MEC300-1 installation instructions General Information, Description, Product specification

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

WARNING

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

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.

Product specification

power supply:	MEC300-1	MEC300-2
	(79.70.0014)	(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	switch, closed to
speed input	ES series	negative on fault
	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