
Reference
Only
ELECTRIC SYSTEM
18000 SERIVCE/MAINTENANCE MANUAL
3-30
Published 12-05-17, Control # 035-23
CHECKING ELECTRICAL INPUTS/OUTPUTS
for the following procedure
Troubleshoot components on main display, system
diagnostic screen first. Any further testing could be
performed with in-line test boards at universal nodes or
Manitowoc Unit Tester at all nodes. The in-line test boards or
Manitowoc Unit Tester can be ordered from your Manitowoc
dealer.
Node number and pin numbers for each component to be
checked is contained in node Test Volt tables.
To test a problem component at a universal node with in-line
test board:
1.
Shutdown engine and turn engine key switch to
stop
.
2.
Determine universal node and keyed connector (W3,
W4, or W6) where problem component is located.
3.
Remove cable to correct connector and insert the keyed
in-line test board between cable and universal node.
4.
At least one cable to node computer must remain
connected when testing.
5.
Determine the wire number(s) of item to be checked.
6.
To test for a voltage:
•
Close knife switch across test terminal on board.
•
Select voltage on meter.
•
Connect meter negative lead to problem component
ground terminal on test board.
•
Connect meter positive lead to problem component
signal terminal on test board.
•
Enable test component and check voltage reading
on meter.
NOTE:
A meter reading of 9 volts can indicate an output is
turned on and is an open circuit. A meter reading of
3 volts can indicate that a circuit is turned off and is
an open circuit.
7.
To test for amperes:
•
Open knife switch across test terminal.
•
Select amperes on meter.
•
Connect meter leads across test board problem
component terminal.
•
Enable test component and check ampere reading
on meter.
Test a for a communication problem on a universal node with
communication in-line test board:
1.
Engine must be off and engine key switch in
run
position, with all brakes and locks engaged.
2.
Access desired node to install communication in-line
test board.
3.
Remove cable from node at W1 or W7 connector.
4.
Connect the communication in-line test board between
cable and universal node connector.
5.
Check between terminals C (CAN high) to D (ground)
or
F (CAN low) to D (ground).
6.
A reading of 1 to 3 volts indicates normal communication
between nodes.
7.
A reading of a steady 0 or 2.5 volts can indicate no
communication on CAN-Bus.
Control Handle Voltages
Troubleshooting control handles can be performed
only
on
digital display screen. See individual component screens
and CAN-bus screen in Crane Diagnostics topic in this
section.
Enable the test control handle and check the handle voltage
on system screen.
Voltages outside the listed range may indicate a problem
with the control handle, electrical circuit, or electrical
components.
Handle center switch (CS) status is also shown on system
digital display screen.
Handle Controller
Acceptable Voltage (DC)
Swing
Left 2.4 To 0.5 Volts
Right 2.6 To 4.5 Volts
Boom Hoist
Raise 2.4 To 0.5 Volts
Lower 2.6 To 4.5 Volts
Main Hoist 1
Raise 2.4 To 0.5 Volts
Lower 2.6 To 4.5 Volts
Main Hoist 2
Raise 2.4 To 0.5 Volts
Lower 2.6 To 4.5 Volts
Whip Line Hoist
Raise 2.6 To 4.5 Volts
Lower 2.4 To 0.5 Volts
Mast Hoist
Raise 2.6 To 4.5 Volts
Lower 2.4 To 0.5 Volts
Luffing Jib Hoist
Raise 2.4 To 0.5 Volts
Lower 2.6 To 4.5 Volts
Right and Left Travel
Forward 2.6 To 4.5 Volts
Reverse 2.4 To 0.5 Volts
Engine Hand Throttle
Low Idle 0.5 Volts
High Idle 4.5 Volts
Engine Foot Throttle
(Not Shown)
Low Idle 2.9 To 3.0 Volts
High Idle 0.9 To 1.0 Volts
Содержание 18000
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