Manitowoc MLC165-1 Service Maintenance Manual

Reference Only
Manitowoc Published 05-26-17, Control # 238-02 3-5
MLC165-1 SERVICE/MAINTENANCE MANUAL ELECTRICAL SYSTEM
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Mast Angle Sensors
A universal node provides power to the mast angle sensor.
The sensor outputs an analog signal that is proportional to
the sensor angle. The universal node reads this output
voltage and software derives the mast angle based upon the
signal level.
Swing/Travel Alarms
A universal mode drives the right and left side swing/travel
alarms with a digital output whenever the swing pump or
travel motors are being driven.
Load Pin Sensors
A universal node provides power to the load pin sensors. A
strain gauge within the load pin produces an analog output
current that is proportional to the load. The universal node
reads this output current and software derives the value of
the load based upon the current level.
Temperature Sensors
A universal node provides power to the temperature
sensors. The sensor produces an analog output voltage that
is proportional to temperature. The universal node reads this
output voltage and software derives the value of the load
based upon the current level.
Fuel Level Sensor
A universal node provides power to the fuel level sensor. The
sensor transducer produces a sound impulse that reflects off
of the fuel surface and bottom of the fuel tank.
A micro-controller in the fuel sensor uses the echo return
times to calculate the distance from the fuel surface to the
bottom of the tank and sends the universal node an analog
voltage that is proportional to the fuel level.
Hydraulic Fluid Level Sensor
A universal node provides power to the hydraulic level
sensor. The sensor has a capacitive probe that is immersed
in the hydraulic fluid. The level of hydraulic fluid determines
the capacitance of the probe.
A micro-controller in the probe translates the probe
capacitance to an analog output voltage that is proportional
to the fluid level and sends this to a universal node.
Pressure and Vacuum Switches
Pressure and vacuum switches are normally closed and
open when the vacuum or pressure level exceeds the setting
of the switch. In the non-tripped state, a universal node
provides power to the normally closed contact.
The universal node reads the applied power through the
normally closed contact back through the center terminal as
a logic high. When the switch is tripped, the normally closed
contact opens, breaking the path of power through the center
terminal and the universal node reads this as a logic low.
Setup Remote
A universal node provides power to the setup remote. The
function power switch provides power to the individual
control switches when closed. The individual switches are
single pole triple throw switches route the supplied power
back to the universal node when closed. The universal node
interprets this as a command and drives the corresponding
function. An emergency stop switch opens the power circuit
from the universal node, ceasing commands and movement.
The functions controlled by the remote setup are:
• Mast Cylinders Extend/Retract
• Boom Hinge Pins Engage/Disengage
• Counterweight Pins Engage/Disengage
• Right Counterweight Raise/Lower
• Left Counterweight Raise/Lower

Manitowoc MLC165-1 Specifications

General

Brand	Manitowoc
Model	MLC165-1
Category	Construction Equipment
Language	English