MeCAN™ I/O Interface Module (79700020)
Oil pressure, coolant temperature (model MEC301-2): for fault switch, closing to negative DC on fault (79700020)
This specific model is for use with Murphy ES/ES2 series resistive senders. Custom solutions are also available for non-standard, volume OEM requirements.
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 engines into modern CANbus systems. Applications include the retrofit of older engine fleets with modern digital instruments, controls and telemetry, and the development of standard control panels for mechanical engines.
MeCAN has three sensor inputs and one output. Two inputs are for oil pressure and coolant temperature sensing, either by fault switches or resistive senders. The third input measures engine speed using a magnetic pickup or charge alternator signal. Input signals are translated into SAE J1939 CANbus messages with assigned PGN address, data scaling and transmission rate. The output can drive an alarm lamp or buzzer, or actuate a shut-down relay if the pressure, temperature or speed inputs deviate outside preset fault limits.
A fourth input is connected to 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.
MeCAN is compact and light enough for inclusion in engine wiring harnesses, but can also be surface mounted. The case is fully sealed in epoxy resin for high impact and environmental resistance.
POWER SUPPLY
Operating voltage: 7 to 35 VDC
Current consumption: 25mA (typ.)
INPUTS
Maximum operating range: -2 to +35 VDC max.
Oil pressure, coolant temperature (model MEC301-1): for Murphy ES(2)P and ES(2)T series resistive senders
Oil pressure, coolant temperature (model MEC301-2): for fault switch, closing to negative DC on fault
Speed (magnetic pickup): opto-isolated, 3-30 Vrms, adjustable 10-180 pulses per rev
Speed calibration: 0-5 kOhm potentiometer (setup only)
OUTPUTS (all ratings non-reactive)
Shutdown: negative Low-side or ground switch, 250mA max.
CANbus: SAE J1939 protocol with 120 Ohm terminating resistor
PHYSICAL
Case material: high impact ABS, epoxy filled
Dimensions: Width 4.21 in. (107 mm); Height 1.07 in. (27.3 mm)
Weight: 60 g / 0.13 lb (approx.)
Operating temperature: -40 to +85 degrees C / -40 to +185 degrees F
Environmental Sealing: IP65 case (with DIP switch protective film intact), exposed lead ends
Electromagnetic Compatibility: 2004/108/EC
ELECTRICAL
J1113-11 pulses 1c, 2a, 3a/b and 5a
EN 61000-4-2 ESD
EN 61000-4-3 Radiated disturbance
EN 61000-4-4 Fast transients
EN 61000-4-5 High energy transients
EN 61000-4-6 Conducted RF disturbance
CISPR 16-1-2, 4.3 Conducted emissions
CISPR 16-2-3 Radiated emissions
MESSAGES BROADCAST
61444 - Engine RPM
65263 - Oil Pressure
65262 - Coolant Temperature
65271 - Battery Voltage
65253 - Engine Hours
Literature:
MurCal is an Authorized Distributor of Murphy by Enovation products.
MurCal provides experienced application and product support, before and after the sale.
For California customers: Prop 65 WARNING: This product may have been manufactured with or uses components that can expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.p65warnings.ca.gov.