Manitowoc Published 10-01-12, Control # 044-05 v2 3-51
777 OPERATOR’S MANUAL OPERATING CONTROLS AND PROCEDURES
3
For identification of the digital outputs and inputs (and the
crane components connected to them) see Tables 3-8 and 3-
9 in this section.
To determine the state of the individual inputs/outputs in a
bank, find the number displayed for the bank in the first
column in Table 3-10. In the corresponding row the identifier
numbers that are ON (active) in the bank are shaded. Use
Tables 3-8 and 3-9 to identify the crane components
associated with the identifiers for the corresponding bank.
Example 1: The number displayed in Bank 5 of screen D2 of
the digital display is 41. Go to row number 41 in Table 3. The
boxes for identifiers 1, 8 and 32 are shaded in this row,
indicating that the corresponding inputs are active. Find the
component description for the identifiers in Table 2, Bank 5.
In this example, the inputs for Front Pawl In (1), Auxiliary
Drum Pawl In (8), and Seat Switch (32) are active.
Example 2: You want to know if the controller output for the
rear drum band brake is ON. In Table 1 you will find Rear
Drum Band Brake in Bank 1 (identifier 2). Look up the current
number for Bank 1 in screen D1 on the digital display (e.g.
152). Then go to the corresponding row number (152) in
Table 3. Identifier 2 box is not shaded in this row, indicating
that the controller output to the rear drum band brake is OFF.
NOTE: All numbers in screen D1, and the pump/motor
command values in screens DRUM, SWING and
TRACK represent controller commands to the
corresponding output devices only. The state of a
certain output port on the controller may not
necessarily correspond to the actual state of the
associated crane component (brake valve, clutch
valve, etc.), since the connection between the
controller and the component may be faulty due to
loose connections, corroded terminals, broken
wiring or improperly operating components.
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