Manitowoc MLC165-1 - Mast Preparation and Vertical Raising

Reference Only
Manitowoc Published 05-26-17, Control # 238-02 5-11
MLC165-1 SERVICE/MAINTENANCE MANUAL HOISTS
5
5
Speed Sensor—Free Fall Drum
When the drum rotates, an encoder on the speed sensor
assembly (Figure 5-25 on page 5-35
) sends a 24 volt
direction and speed signal to the control system. The control
system sends a 24 volt output to a rotation indicator
(thumper solenoid) in the control handle. The rotation
indicator pulsates with a varying frequency to indicate drum
rotational speed.
ELECTRICAL DIAGRAMS
Electrical diagrams on the following pages are adapted from
the Electrical Schematic drawing 81019880.
See Figure 5-8
for a key to the line colors used in the
electrical diagrams.
Figure 5-8. Key to Colors on the Electrical Diagrams
Encoder
Ground
Analog Input
Digital Output
12 Volts or 24 Volts
5 Volts
Digital Input
M100848