WIKA Mobile Control LP
1540 Orchard Drive
Chambersburg, PA 17201
qSCALE maestro (PLC v01.00.00) Service Manual / Issue E (HMI v1.0.0) 04/2018 / rbm.
Service : (717) 217-2250
Parts / Sales : (717) 217-2269
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HIRSCHMANN MCS
6.7 Load Sensing
Please note that the load displayed by the RCL is not a direct measurement, but a calculated value
that is based on many factors. Factors included that are outside of the measured values include:
Operator settings such as:
Operating mode/configuration
Parts of Line/Reeving
Outrigger position
Rigging parts such as:
Hook block weight
Sling weights, etc.
Tip height (length of load line used)
Boom weights
Boom attachments such as:
Stowed jibs
Glass jib, telescopic jib, etc.
Before checking the system for a load-reading problem, make sure all of the above has been ruled out.
When you still feel the system is reading a sensor wrong and thus displaying an incorrect load, use the
following:
Use the previous sections and the individual sensor signal displayed on the screen to double-check the
following:
boom length reading
angle transducer reading
pressure transducer readings
If all are correct, use the zero setting and calibration screens to zero pressure transducers, calibrate
angle, and length. If you still have a problem, replace pressure transducer(s).
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