Description of the System
© 2016 Hirschmann Automation and Control GmbH · Mobile Machine Control Solutions · www.beldensolutions.com 9/161
qSCALE i2 Cranes (Tool Version 3.0.34) Service Manual / Issue B / 11-2017 / ac.
2.1 Description of the System
2.1.1 Description of System Function
The qSCALE i2 system is a CAN bus system comprised of an operating console, digital input/output
(DIO) extension box, length/angle cable reel, pressure transducers, and an anti-two-block switch. All
components and sensors are equipped with CAN bus controllers.
The Hirschmann Automation and Control system operates on the principle of reference/real compari-
son. The real value resulting from the pressure 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, telescope out, 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 infor-
mation used to calculate the operating conditions.
Boom length and boom angle are registered by the length/angle sensor mounted inside the cable reel
which is mounted on the boom. The boom length is measured by the cable reel cable, which also
serves as an electrical conductor for the anti-two block switches.
The crane load is measured by pressure transducers attached to the piston and rod side of the hoist
cylinders.
The interactive user guidance considerably simplifies the input of operating modes as well as the setting
of geometry limit values.
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