Airboxes have black cable and yellow cable options. How are the inputs and outputs supplied in each case?
Yellow cable Airboxes use the AS-Interface supply for both input and output. Airboxes with black cable supply (auxiliary voltage Uaux) use the yellow cable for input and status monitoring and black cable for outputs. Power consumption per box is about 100mA. Airboxes with black cable can be used to achieve E-Stop in category 1, using compressed air to reach a safe position but not to hold that position. Remember that in this instance primary energy including compressed air has to be positively switched off.
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