Operator's Manual
DS 350 / 1334
© PAT
Rev. D 04/12/02 CSH
190072_d.DOC
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SYSTEM DESCRIPTION
The PAT Rated Capacity Limiter DS 350 consists of a central microprocessor unit, operating console,
angle sensor, line riders, and anti-two block switches.
The system operates on the principle of reference/real comparison. The real value, resulting from the load
measurement is compared with the reference data, stored in the central processor memory and evaluated
in the microprocessor. When limits are reached, an overload warning signal is generated at the operator’s
console. At the same time, the aggravating crane movements, such as hoist up and boom down, will be
stopped.
The fixed data regarding the crane, such as capacity charts, boom weights, centers of gravity and
dimensions are stored in memory chips in the central processor unit. This data is the reference information
used to calculate the operating conditions.
The boom angle is measured by the angle sensor, mounted in the boom base. The cable reel cable serves
as an electrical conductor for the anti two-block switches and line rider signals.
The hoist load is measured by line riders mounted on top of the boom, close to the tip.
The interactive user guidance considerably simplifies the input of operating modes as well as the setting of
geometry limit values.
Fig. 1:
Components of the RCL system PAT DS 350
1. Operator’s Console
2. Central Unit
3. Cable Reel
4. Boom Angle Sensor
5. Junction Box
6. Line rider (Tensiometer)
7. A2B Switch