MURPHY MDDM-20 Series Display and Diagnostic Module

The Murphy Display and Diagnostic Module MDDM20-C is best viewed either straight on or at 6 o’clock position. The MDDM is a powerful, easy to use multifunction tool that enables the operator to view many different engine parameters and engine service codes. The MDDM includes a two line by eight character backlit LCD display. The top line displays data labels, i.e. "EngHrs". The bottom line displays appropriate units information i.e "80 psi" for oil pressure. The UP and DOWN push buttons located on the front of the MDDM, are used for scrolling through the parameters and viewing the menu list. Two LEDs (amber and red) are used to annunciate active fault messages received by the MDDM. Other components in the system are microprocessor-based analog gauges for displaying critical engine data broadcast by the ECM: engine RPM, oil pressure, coolant temperature, system voltage, etc., a combination audible alarm and relay unit for warning and shutdown annunciation. Up to 32 components may be linked to the MDDM by an RS485 daisy chained twisted pair cable up to 1,000 meters from the MDDM. The MDDM and all connected components can be powered by 12 or 24 volt systems, are back lit using LEDs, and are 100% environmentally sealed.

PRODUCT FEATURES:
Specifically Designed For SAE J1939 Controller Area Network (CAN) Equipment Applications
Displays Over 30 Standard SAE J1939 Parameters Broadcast by Major Engine and Transmission Manufacturers’ ECM’s
Displays Active Faults and ECM Stored Fault Codes For Diagnosing Equipment Malfunctions
Re-broadcasts Critical Data to MLinkTM Analog Gages

PRODUCT SPECIFICATIONS:
Murphy Part No.: MDDM20-C
Size: 2-1/16 in. (52mm) Mounting Hole
Connector (See Image #3): Metri-Pack (12047931)
Bezel Type: A-20 Type
Bezel: Stainless Steel (Black Optional).
Membrane Switch: Polyester.
Case/Clamp: Nickel Plated Steel, Aluminum Killed, QQ-S-698.
Maximum Panel Thickness: 0.30 inch. (8 mm).
Mounting Hole: 2.062 inch (52 mm) in diameter.
Dial: White on Black.
Reversed Polarity: Withstands reversed battery terminal polarity indefinitely within operating temperatures.
CAN BUS: SAE J1939 Compliant.
Auxiliary Gage Communication: RS485.
Operating Voltage: 8 VDC Minimum to 32 VDC Maximum.
Operating Temperature: -4 to 158°F (-20 to 70°C).
Storage Temperature: -40 to 185°F (-40 to 85°C).
Shipping Weights (all models): 1 lb. (45 g.).
Shipping Dimensions (all models): 5-1/2 x 5-1/2 x 5-1/2 in. (140 x 140 x 140 mm).

APPLICATIONS:
Stationary or Mobile Equipment Applications

ENGINE PARAMETERS:
Engine Hours
Engine RPM System Voltage
% Engine Load at the current RPM
Coolant Temperature
Oil Pressure
Fuel Economy
Throttle Position
Manifold Air Temperature
Current Fuel Consumption
Active Service Codes
Stored Service Codes from the engine
Set the Units for display
View Engine Configuration Parameters