Manitowoc MLC300 Service And Maintenance Manual

Reference Only
Manitowoc Published 11-22-17, Control # 257-02 3-19
MLC300 SERVICE/MAINTENANCE MANUAL ELECTRICAL SYSTEM
3
RCL Beacon
A controller provides a digital output to each indicator in the
RCL beacon (red, amber, and green).
Wind Speed Indicators
A controller digital output provides power to the wind speed
sensor. The sensor outputs an analog signal that is
proportional to the wind speed. A controller analog input
reads this output voltage, and controller software determines
the wind speed based upon the signal level.
Proximity Sensors
Proximity sensors sense metal objects by generating
magnetic fields. When no metal object is close to the sensor,
the solid state switch within the sensor is open and there is
no output signal. When a metal object is close to the sensor,
the switch within the sensor closes and outputs a signal that
is 1.8 V
DC
less than the sensor supply voltage.
A yellow LED on the sensor displays the switch state.
Control Module Test Voltages
Pump and Motor Voltages and Currents
Table 3-4 shows the voltages and currents of the pumps,
hoists, and travel motor.
Table 3-4. Pump and Motor Voltages and Currents
Pumps
1.6 or 8.8 V
DC
nominal
200 to 600 mA
1, 2
Hoist Motors
4.5 to 10 V
DC
180 mA to 450 mA
1, 2
Travel Motors
0 or 24 V
DC
nominal
0 or 600 mA nominal
1
Note 1: Resistance increases as the temperature rises
on the pump or motor solenoid coil, resulting in
decreased current values when measured with a meter.
The listing in the table is the current range for a 21°C
(68.9°F) coil.
Note 2: The node regulates displacement of the pump or
motor with a PWM output. The values represent the
beginning and end of the control range.

Manitowoc MLC300 Specifications

General

Brand	Manitowoc
Model	MLC300
Category	Construction Equipment
Language	English