Operation and Maintenance
Operation
Me CAN begins transmitting J 1939 CAN bus data immediately
after power up. Data can be viewed using a J1939 compatible
display, e.g., the Murphy PV101, or used as part of a J1939
control system, e.g., Murphy CAN start or CASCADE modules.
Engine oil pressure and coolant temperature
Model E2501300 transmits pressure and temperature data
when the resistive sender inputs are within normal range.
MeCAN also transmits appropriate J 1939 SPN (Suspect
Parameter Number) and FMI (Fault Mode Indicator) codes if:
• input resistance is out of normal sender range, e.g., open
er short circuit
•
oil pressure drops below 20 psi (warning message) and
10 psi ( shut-down/derate message)
•
coolant temperature rises above 100
°
C/212
°
F (warning
message) or 110
°
C/230
°
F (shut-down message)
Model E2501200 transmits pressure and temperature data in
accordance with the input switch position:
Input switch
Input switch
closed (to -DC)
open
oil pressure data
O psi &
100 psi
SPN/FMI code
coolant temp data
105
°
C / 221
°
F&
90
°
C
I
194
°
F
SPN/FMI code
Maintenance and Warranty
MeCAN contains no user-serviceable parts. Maintenance is
therefore limited to the following preventative checks:
• Check that MeCAN electrical connections are secure.
• Check that the case is mounted securely, with vibration
and environmental exposure minimi
z
ed where possible.
The case may be wiped with a clean, damp cloth. Do not
use cleaning solvents.
MeCAN 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.
Oil pressure fault codes are not transmitted until 10 seconds
after engine starting, once speed has risen above 800 RPM.
Engine speed data
RPM data is transmitted whenever a valid speed signal
is present (above the minimum 3V rms). If engine speed
exceeds 3500 RPM, MeCAN also transmits the appropriate
J 1939 overspeed fault SPN and FMI codes.
Battery voltage
MeCAN measures its DC power supply voltage and transmits
this as J1939 electrical potential data (PGN 65271).
Hours run
MeCAN transmits engine hours run data (PGN 65253).
The hours run value is stored in non-volatile flash memory
and increases only while engine speed is above 500 RPM.
To prolong internal flash memory life, hours run data is
updated at 3 minute intervals.
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, LLC,
with all rights reserved. (c) 2015 Enovation Controls, LLC. A copy of the warranty may be viewed or printed by going to www.fwmurphy.com/warranty.
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Enovation Controls - MeCAN MEC301 installation instructions
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ISO
9001
Oo•hty
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FM 28221 (Tulsa, OK - USA)
FM 620667 (San Antonio, TX - USA)
FM 28221 (Rosenberg, TX - USA)
FM 29422 (UK)
FM 523851 (China)
Printed in the USA
TS
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00-02-0665 revision D 19th August 2015 p3/3
