Murphy Network Card MLA20 User Manual

MLA-00012N  
Revised 10-04  
Section 78  
TM  
Installation Instructions for MurphyLink  
Analog Gages Series: MLA20 and MLA35  
00-02-0424  
Please read the following information before installing. A visual inspection of this product for damage during ship-  
ping is recommended before mounting. It is your responsibility to have a qualified person install this unit.  
GENERAL INFORMATION  
WARNING  
BEFORE BEGINNING INSTALLATION OF THIS MURPHY 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  
MLA35 Series  
MLA20 Series  
The MurphyLinkTM gages are a series of instruments designed to display the  
information transmitted by the Murphy Display and Diagnostic Module  
(MDDM) in a traditional analog format. Communication from the MDDM to  
these units is via an RS485 twisted pair proprietary serial link. These  
MurphyLinkTM components are environmentally sealed, LED back lit (green)  
and are available in a standard 2 in. (51 mm) diameter, plastic case. The  
MLA35 Series models feature a 3-3/8 in. (86 mm) diameter, plastic case.  
Basic 2 in. (51 mm) case models  
MLA20-A-100-A  
MLA20-B-250-A  
MLA20-C-12-A  
MLA20-C-24-A  
MLA20-D-100-A  
MLA20-E-400-A  
MLA20-F-250-A  
Engine Oil Pressure  
Coolant Temperature  
Voltmeter 12 VDC  
Voltmeter 24 VDC  
Specifications  
Percent Load @ Current Speed  
Gear Oil Pressure  
Power Supply:  
Input Voltage: 12V (10-16 VDC min. & max. voltage).  
24V (18-32 VDC min. & max. voltage).  
Operating Current: (@ 14 VDC) = MLA20: 27 mA min.; 50 mA max.  
MLA35: 43 mA min.; 48 mA max.  
Backlight:  
Gear Oil Temperature  
Basic 3-3/8 in. (86 mm) case models  
MLA35-T-3000-A  
Tachometer  
Voltage: 12 to 14 VDC (See NOTE below).  
Maximum Current: 30 mA.  
MLA35-S-85-A  
Speedometer  
NOTE: MLVC2412 Regulator required for 24 VDC Systems.  
NOTE: All basic models listed above are available with Amp mini  
universal (standard), Deutsch or Metri-Pack connectors.  
Input: RS485 data (MurphyLinkTM proprietary protocol).  
Output: Analog Readout.  
Operating Temperature: -40° to 185°F (-40° to 85°C).  
Storage Temperature: -76° to 185°F (-60° to 85°C).  
Dial: White numerals over black background:  
MLA20: 90° sweep; MLA35: 250° sweep.  
Gage Accuracy: MLA20: Better than ±1.5% of scale.  
MLA35: Better than ±2% of scale.  
CAUTION: These instruments are designed to be used ONLY  
with the MurphyLinkTM Display and Diagnostic module (MDDM)  
or other approved MurphyLinkTM products.  
Enclosure: Environmentally Sealed.  
Material:  
Warranty  
A limited warranty on materials and workmanship is given with this  
FWMurphy product. A copy of the warranty may be viewed or printed by  
Case and Clamp: Polyester (PBT).  
Lens: Polycarbonate.  
Bezel: Stainless Steel (Black optional).  
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.  
Installation MLA-00012N page 1 of 2  
 

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