National Crane Published 5-27-2018 Control # 039-06 2-19
800D OPERATION
OUTRIGGER MONITORING SYSTEM (OMS)
(OPTIONAL—STANDARD IN NORTH
AMERICA)
Operation
The Outrigger Monitoring System (OMS) aids the operator in
ensuring that the crane is properly setup on outriggers and
stabilizers. The OMS utilizes one sensor in each outrigger
and one proximity switch in each horizontally extending
stabilizer to identify when the outriggers and stabilizer beams
are extended to a point in which they provide maximum
stability.
The OMS utilizes an LED indicator to communicate to the
operator the position of the outriggers and stabilizers. The
Outrigger Status Indicator (1, (Figure 2-5)) is a bi-color LED
located at each control station. On older versions of the
800D, when power is on and the outrigger and stabilizer
beams are extended to a point at which they provide
maximum stability (stabilizers beams shall be fully extended
on cranes equipped with Rear Stabilizer Out and Down
(RSOD)), the Outrigger Status Indicator illuminates constant
GREEN, indicating a lift can be made. If power is on and one
or more outrigger or stabilizer beams are not extended to a
position which provides maximum stability, the Outrigger
Status Indicator flashes RED, indicating a lift should not be
made. If the Outrigger Status Indicator illuminates constant
red, there is a fault in the OMS.
On newer versions of the 800D, the Outrigger Status
Indicator illuminates constant RED when power is on and
any of the outriggers is not fully extended. A lift should not be
made when the indicator is RED. When power is on and all
outriggers are fully extended, the indicator changes to
constant GREEN, indicating a lift can be made. There is no
flashing red state for the Indicator on newer models.
On newer versions of the 800D equipped with the optional
RCL system, the outrigger status is displayed on the QScale
monitor.
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