Murphy MLA20 Installation Instructions

Installation Instructions for MurphyLink
Analog Gages Series: MLA20 and MLA35
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.
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

The MurphyLink gages are a series of instruments designed to display the
TM
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
MurphyLink components are environmentally sealed, LED back lit (green)
TM
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.

Specifications

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:
Voltage: 12 to 14 VDC (See NOTE below).
Maximum Current: 30 mA.
NOTE: MLVC2412 Regulator required for 24 VDC Systems.
Input: RS485 data (MurphyLink
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.
Enclosure: Environmentally Sealed.
Material:
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.

GENERAL INFORMATION

proprietary protocol).
TM
Installation MLA-00012N page 1 of 2
MLA20 Series

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

Basic 3-3/8 in. (86 mm) case models

MLA35-T-3000-A
MLA35-S-85-A
NOTE: All basic models listed above are available with Amp mini
universal (standard), Deutsch or Metri-Pack connectors.
CAUTION: These instruments are designed to be used ONLY
with the MurphyLink TM
or other approved MurphyLink

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
going to www.fwmurphy.com/warranty.asp.
MLA-00012N
Revised 10-04
TM
Section 78
00-02-0424
MLA35 Series
Engine Oil Pressure
Coolant Temperature
Voltmeter 12 VDC
Voltmeter 24 VDC
Percent Load @ Current Speed
Gear Oil Pressure
Gear Oil Temperature
Tachometer
Speedometer
Display and Diagnostic module (MDDM)
TM products.