Question

How do I adjust for NO vs. NC operation of the BX80B-1P-0H light screen sensor receiver?

Answer

First, in order to change the shelf state of the receiver from normally open to normally closed, the commutator adjustment must be made with the receiver powered down.

Changing the commutator setting with power applied to the receiver has no affect as the receiver only reads this setting on power up. This is briefly documented in the product insert.

Second, changing the setting with the receiver powered up does NOT damage the receiver.

Third, normally open and normally closed operation of the sensor is with the sensor blocked. The operation is contrary to the traditional understanding of normally open, normally closed and shelf state. This is built into the Micro Detectors design of the sensor, and thus cannot be changed.

Rotating the commutator fully counter-clockwise sets the receiver to NO operation (output OFF with target blocking beam) and rotating the commutator fully clockwise sets the receiver to NC operation (output ON with target blocking beam).

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FAQ Subcategory: None

This item was last updated on 2013-06-28
Document ID: 1444

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