CHAPTER 8: OPERATION 8-5
ALPHA 552
2. POWERING ON
The motor of the ALPHA 552 barfeed system is equipped with a built-in absolute encoder that
continuously controls the position of the carrier. When the barfeed system is powered down or there is a
power failure, this position is kept in the memory by the PLC.
When powering up, the pusher position value saved is immediately taken into account, thus avoiding any
input from the beginning. The PLC reads signals from sensors and gives the operator allowable
operations only.
Notice: Do not change the pusher position when barfeed system is powered OFF. If it’s found the
position reading does not match the pusher’s actual position. For example, when pusher is at
home position, the current position is not 0. Take any approach below to reset the original
position:
1. Move the pusher back to home position. Power the barfeed system OFF and ON.
2. Move the pusher back to home position. Pressing the button leftward for 3 seconds.
Power ON Power OFF
power ON the barfeed system.
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