MAST STOP LIMIT SWITCH
See Figure 6-10 for the following procedure.
NOTE: Mast Stop Limit Switch procedures apply to crane
software version M002066 and newer.
Maintenance
Software Confirmation
NOTE: Contact the Manitowoc Crane Care Lattice Team
for questions regarding the software verification
procedure.
1. Verify the mast stop cylinder position information screen
is not available on crane display.
2. Make sure the crane is not in MAX-ER mode and unplug
P9 W64 connector from the MAX-ER limit switch cable
receptacle (3a).
3. Verify Fault #27 is active on the crane display.
4. Reconnect P9 W64 connection to the MAX-ER limit
switch.
Limit Switch Inspection
NOTE: Inspect and test the mast stop limit switch during
MAX-ER setup.
1. Inspect limit switch lever and actuating lever for freedom
of movement.
2. Confirm Fault #27 is active on the crane display when
the mast stop limit switch is tripped at 26
o
.
Adjustment
It should only be necessary to perform this procedure when
parts are replaced or the limit switch does not operate
properly.
NOTE: Mast stop limit switch to switch when the cylinder is
80% retracted.
1. When replacing the limit switch, mount the fixed limit
switch arm (9) at 90
o
with respect to the cylinder
centerline. Reference the switch free position view (2c)
in Figure 6-10
.
2. Confirm the limit switch bracket (7) clears the outer
diameter of the cylinder head.
3. The limit switch arm must rotate
26
o
to trip the switch,
view (2d).
4. Adjust the switch mounting to ensure that the limit switch
arm travels greater than
60
o
from the free position when
the cylinder is fully extended confirming the positive
opening of the normally closed contacts at
55
o
.
5.
Confirm the maximum limit switch arm travel is no
greater than
85°.
Mast Stop Limit Switch Electrical Wiring
P2-BLK
P2-WHT
P2-GRN
Jumper
Blue
FIGURE 6-9
To Next Page
Loading...
