Manitowoc 14000 Service And Maintenance Manual page 62

INTRODUCTION
When drum 3 control handle is moved to toward neutral
position, node 1 controller compensates for hydraulic system
leakage or changing engine speed. This shifts the motor
back to maximum displacement for slower output speed to
slow drum rotation.
When control handle is moved to neutral position, node 4
controller sends a zero output voltage to pump EDC that
moves swashplate to center position. Node 1 controller
14CSM-1-116
+
24 Volts
Engine Stop
CB4
6A
6C4
10 A
CAN Power
CB8
6C8
50 A
Cab Power
CB9
6C9
50 A
Jib Up Limit Bypass
Limit Bypass
Drum 3
Park Brake
Drum 3
Control Handle
Drum 3
NC
Minimum Bail
Limit
NO
Drum 3 Motor
SS
Speed Sensor
Drum 3/ Left
HS
Travel
10
Diverting
Raise
Drum 3/ Left
Travel Pump
#3
Lower
1-50
6C4A
Run 3
Start
P12-24
8C
WCP
NODE 0
8
P12-07
DI
DO P11-13
DO P11-14
DO P12-08
DI P12-15
DO P52-10
DI P51-09
DO P52-10
5 Volts P52-35
AI P51-05
Gnd P51-22
AI 33-c
24 Volts 33-V
Gnd 33-E
24 Volts 34-n
EC3A 34-p
EC3B 34-s
Gnd 34-r
Gnd 34-G
DO 34-H
Gnd 44-K
DO 44-S
EDC DO 44-M
Gnd 44-L
Published 09-10-14, Control # 065-24
stores the load holding pressure in pressure memory. After
drum 3 control handle center switch opens, node 3 controller
sends a zero output voltage to disable drum brake release
solenoid HS-7. Drum brake solenoid valve shifts to block
pilot pressure to brake and opens a line to tank. Brake
applies before drum pump de-strokes.
Drum 3/left travel to diverting solenoid HS-10 remains
enabled until left travel handle is moved.
P12-01
24 Volts
P12-31
CAN H
P12-32
CAN L
P12-21
Gnd
P11-10
DO
NODE 1
P11-29
Gnd
(Master)
P11-08
DO
P11-30
Gnd
P52-03 DO
NODE 2
P52-23 Gnd
34-J Gnd
34-R DO
34-X Gnd
34-Z DO
NODE 3
34-c Gnd
34-d DO
34-e Gnd
34-f DO
46-T 24 Volts
46-e AI
NODE 4
46-U Gnd
14000 SERVICE MANUAL
–
0 Volts
CAB
PWR
Display 1
Display 2
RCL Caution
RCL Warning
Handle
Rotation
Indicator
HS
Drum 3
9
Pawl In
HS
Drum 3
8
Pawl Out
HS
Drum 3
7
Brake
Drum 3
M/C
Motor Control
Drum 3/
Left Travel
Hyd
Pressure
Psi
Sender
FIGURE 1-29