Category: Industrial Equipment
Servo In-Position Bit Is On but the Part Is Off? Check What Feedback Measures
A motor encoder can confirm motor position without directly measuring the final load position.
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Software Travel Limit Trips After Homing? Check the Coordinate System First
A software-limit fault after homing can indicate that the referenced coordinate system and configured limits do not agree.
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Barcode Looks Correct but the PLC Rejects It? Reveal the Hidden Characters
Two barcode strings can look identical while differing in length, terminators, spaces, or character encoding.
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Servo Brake Releases Late? Don\’t Tune Around a Mechanical Timing Problem
A brake that does not release as intended can make an axis look overloaded or poorly tuned.
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Photoelectric Sensor Sees the Background Instead of the Part? Check the Geometry
A sensor can switch reliably and still detect the wrong surface.
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Two Photoeyes Work Alone but Fail Together? Look for Mutual Interference
An optical sensor that becomes unstable only when a neighboring sensor operates may be receiving the wrong emitter\’s light.
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Clear Bottle Slips Past the Sensor? An Opaque-Object Test Can Mislead You
A sensor that detects a hand or cardboard box may still miss a clear bottle.
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Inductive Sensor Misses the New Metal Part? Check the Material Factor
Changing a target from steel to another metal can change detection distance on some inductive sensors.
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Proximity Sensor Stays On After Mounting? The Bracket May Be the Target
A proximity sensor that behaves correctly in free space can behave differently when surrounded by mounting metal.
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Two-Wire Sensor Won\’t Turn the PLC Input Off? Check Leakage Current
A two-wire sensor is not an ideal dry contact.
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