INTRODUCTION 14000 SERVICE MANUAL
1-22
Published 09-10-14, Control # 065-24
ELECTRICAL CONTROL SYSTEM
See Figure 1-13 for the following procedure.
The crane’s boom, load lines, swing, crawler tracks, and high
pressure accessory components are controlled electronically
with the EPIC (electrical processed independent control)
with CAN-bus (controller area network) technology. The 24
volt CAN-bus programmable controller system uses remote
nodes that contain controllers. Node controllers
communicate with node 1 (master) controller by sending
data packets over a two-wire bus line. Data packets are
tagged with addresses that identify system components.
Node 1 controller compares these input data packet signals
with programming directives and data information. Node 1
controller then provides appropriate output voltage
commands to remote node controllers.
Each node controller receives and sends both analog and
digital input/output voltages. Analog input/output voltages
are either AC or DC variable voltages or currents. Digital
input/output voltages are zero volts (no voltage) or nominal
24 volts.
Node controllers use the binary system. The binary system is
based on binary multiples of two and only recognizes 0 = off
or 1 = on. Basic counts of this system are exponents of the
number two. These exponents are formed in words, called
bytes, of eight numbers each. The eight numbers are 1, 2, 4,
8, 16, 32, 64, and 128 for an 8-bit controller or a combination
of up to 255 bytes. These bytes represent electrical inputs/
outputs to node 1 controller.
Remote nodes on the boom monitor the boom, luffing jib, or
fixed jib components and input the information to node 1
controller. Boom components include angle sensors, block-
up limits, wind speed, and load pin sensors. The mast angle
position is also monitored.
The system nodes controllers are listed below:
Node 1 — Master (Front Console) Cab Controls
Node 2 — Handles and Cab Controls
Node 3 — Drums 1, 2, 3, Limits, and Accessories
Node 4 — Pumps, Sensors, and Drum 4
Node 0 — Engine
RIN (Remote Input Node) Boom
Display Screens
See Figure 1-13 for the following procedure.
The display screens contains the Rated Capacity Indicator/
Limiter display and main display. Use the menu screens to
selected Rated Capacity Indicator/Limiter and crane
functions.
Electrical Power to Operator’s Cab
See Figure 1-14 for the following procedure.
When key-operated engine switch is in STOP position,
voltage is available to operate dome light switch, and radio/
clock. When key-operated engine switch is placed in RUN
position, power is available to the following relays:
• Engine starter (SS) and grid heater (HR)
• CAN-bus system power relay (CAN PWR)
• CAN-bus system ground relay (CAN GND)
• Cab power relay (CAB PWR). When cab power relay is
enabled, power is available to operate crane controls.
• Air conditioning system relay (A/C COMP)
FIGURE 1-13
Monitoring
Voltages Out
Command Voltages In
Node 2
Node 1
Master Controller
RIN
(Boom)
Node 3
Node 4
Processing
Memory
Switches
Brake
Valve
Drum
Speed
Drum
Pressure
Sender
Motor
Pump
Selectors
Limit
Switches
Control
Handles
Voltages to
Counts to
Voltages
Limit Switches
Display Screens
Brake
Gear
Reducer
14CSM1-103
PCP
EDC
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