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ABB 3HAC6428-1/04 Channel input card

The reliable performance of Light Screen Systems requires careful alignment and secure mounting. The model SMBLS 2-part, 3-axis mounting bracket is highly recommended. Solid mounting is important. Mounting locations should be as free from vibration as possible. If vibration is unavoidable, allow the emitter and receiver to vibrate together; no high-amplitude differential vibration is allowed.

Mount the emitter and receiver facing each other at their operation locations.

Their faces (front panels) should be exactly parallel and opposite each other. The line of transmitter LEDs should be exactly parallel with and opposite to the line of receiver phototransistors. This constitutes optimal mechanical alignment. Optimum mechanical alignment does not always result in optimum optical alignment. When optical alignment is optimum, the receiver status indicator (on the front of the receiver) will be OFF and remain OFF with a moderate level of vibration at either the emitter or receive

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