OPERATING CONTROLS AND PROCEDURES MLC90A-1/MLC100-1 OPERATOR MANUAL
3-32
Published 12-10-19, Control # 258-05
Free Fall Lowering Over Speed
This limit does not stop operation. It alerts the operator if the load on either Drum 1 or 2 is being lowered
faster than 150 rpm, which can result in accelerated wear and shortened service life of the free fall brake.
Function Parked
This limit prevents the selected crane function from being operated until the park switch is turned off (un-
parked). This limit cannot be bypassed.
Counterweight Too High
This limit stops Drum 4 if the crane counterweight is raised to high during crane setup. See Section 4 in
this manual for counterweight installation instructions. This limit cannot be bypassed.
Operator Out of Seat
This limit prevents the crane functions from being operated when the operator is out of the seat. Sit down
in the seat to operate the crane functions. This limit cannot be bypassed.
Pawl Engaged
This limit prevents the corresponding drum from lowering until the pawl is disengaged from the ratchet. It
may be necessary to hoist slightly to fully disengage the pawl. This limit cannot be bypassed.
Rated Capacity Limiter
This fault is activated for the following conditions. Take immediate corrective action.
• Overload
• Sensor fault
• Out of the capacity chart (a condition that is not covered by the current capacity chart)
• Unconfirmed or invalid RCL/RCI configuration.
This limit cannot be bypassed.
Operating Limit Icon
To Next Page
Loading...
Need help?
General
