Does the reading head always experience sudden power outages? 90% of the products are not broken!

Industry on-site pain points

In the context of semiconductor precision motion control,reading headSudden power outageIt is one of the most common problems encountered by terminal maintenance and equipment manufacturers.

The fault phenomenon is extremely confusing: if the equipment suddenly loses power and reports an error, the axis control loses contact, or the movement is interrupted during operation, the on-site engineer will immediately determine it asThe reading head body is damagedDirectly going through the repair and replacement process resulted in:

Equipment shutdown causes delays and affects production line utilization rate

Unnecessary repair and replacement costs increase

Misjudging product quality, causing internal friction in communication between supply and demand sides

Based on real customer cases, today we will break down the core truth and cure plan of this high-frequency fault.

Review of testing cases (real submitted data)

Inspection Information

• Fault phenomenon: During the operation of the equipmentIrregular sudden power outage

• Number of failures: 1PCS (sent back for repair at the terminal)

✅ Conclusion of Full Dimensional Inspection

oneappearance inspectionThe reading head body has no bumps, corrosion, or physical damage, and the structure is intact

twoInitial wiring inspectionThe appearance of the original wiring harness shows no signs of damage, breakage, or compression

threeFull electrical performance inspectionLaboratory power on test shows that pulse output, power supply circuit, and signal link are all normal

fourLong term machine copying verificationContinuous 24-hour machine aging test, no power loss, no signal interruption, and the output indicator light works normally

Final Root Cause Determination

Non product design/incoming materials/manufacturing quality issues❌

Real reason: Poor wiring contact at the customer's site (application side issue)✅

(Data source, Atorm)

In depth analysis: Why does poor wiring cause the reading head to "suddenly lose power"?

Many engineers are puzzled:The wiring looks intact, why does it intermittently lose power?

1. Special operating conditions in semiconductor scenarios

Semiconductor precision equipment experiences high-frequency vibration, slight displacement, and temperature fluctuations. Ordinary terminal crimping and docking joints may exhibit:

Micro gap oxidation increases contact resistance

Equipment vibration causes instantaneous disconnection of terminals

The pressure line is not tight enough, and the power supply is interrupted instantly under dynamic working conditions

2. Electrical characteristics of the reading head

precisionreading headBelonging to low-voltage, high-precision signal acquisition devices,Instantaneous disconnection of power supply circuit at 10ms levelThis will trigger the device system to determine a 'power failure', manifested as random and irregular error messages, which are highly confusing.

3. The easiest misjudgment to occur

The fault only exists inOn site dynamic working conditionsReproduce below; Returning to the laboratory for static testing and static testing is completely normal, so it is highly likely to be misjudged as occasional product failure.

Grounded cure plan (recommended improvement measures)

For applications in the semiconductor and precision automation industries, completely eliminate false power failure of the reading head from the wiring level:

1. Terminal selection upgrade [core suggestion]

Abandon economical and simple docking terminals, and adopt them uniformlyHigh fastening gold-plated contact terminal：

Strong antioxidant capacity, suitable for clean rooms and temperature changing conditions

• Higher clamping force, resistant to equipment vibration displacement

Reduce contact resistance and prevent instantaneous power interruption

2. Construction specifications for on-site wiring

• Wire harness crimping: Special crimping pliers must be used to prevent virtual or half pressure

• Wire harness redundancy: The equipment's motion mechanism reserves a reasonable amount of wire harness allowance to avoid pulling or pulling the terminals

Anti loosening treatment: Add buckles and heat shrink tubing to key docking positions to prevent vibration and loosening

3. Daily operation and maintenance checklist

Two new inspections have been added for quarterly maintenance to avoid downtime faults in advance:

1. Visually inspect whether the terminal of the reading head is loose or oxidized black

2. Gently pull the wiring harness for testing and identify hidden virtual connections

Summary: Don't let application problems take the blame for product quality

This official testing case has once again verified:The sudden power failure of the reading head is likely not due to damage to the product itself, but rather a wiring issue during on-site application.

Blind repair and replacement will only increase costs and delay the production line; Standardized wiring and highly reliable terminals can solve this common pain point in the industry at a low cost.