Troubleshooting
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qSCALE i2 Cranes (Tool Version 3.0.34) Service Manual / Issue B / 11-2017 / ac.
3.2.6 Boom Length Sensing
The system measures the length of the main boom of the machine with a length sensor. The length
sensor is contained within the cable reel.
3.2.6.1 Boom Length Sensing Overview
Start by verifying the actual length to the display. Boom length is the distance from the heel pin to the
center of the front sheave wheel. The boom length is displayed on the working screen of the console.
The CAN Bus is digital and as such will either transmit the signal correctly or not at all. If the length
measurement does not match the displayed length, start troubleshooting by checking the length cable
tension. If tension is lacking, check the cable reel to ensure it has the proper pretension. This varies
upon the type of cable reel used.
The voltage supplied to either length sensor will be through the CAN Bus Converter Board (length po-
tentiometers) or a CAN Junction Board (rotary encoders).
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