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LS-7601
LS-7601
LS-7601

KEYENCE LS-7601 LS-7000 Series Digital Micrometer Controller

  • Model: LS-7601
  • Brand: KEYENCE
  • Series: LS-7000 Series
  • Core Function: Controls optical micrometer measurement
  • Product Type: High-Performance Digital Micrometer Controller
  • Key Specs: 2 sensor head connection | 5.5-inch TFT LCD | 0.01 µm minimum display unit
  • Condition: New Original / New Surplus (Never refurbished)
  • Inventory Status: Active industrial measurement platform component. Recommended spare consideration for production lines relying on LS-7000 series inspection equipment.
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Description

Key Technical Specifications

Parameter Value
Manufacturer KEYENCE
Model Number LS-7601
Product Series LS-7000 Series
Product Type Digital Micrometer Controller
Controller Type High-performance model
Connectable Sensor Heads 2 heads
Display 5.5-inch TFT LCD
Minimum Display Unit 0.01 µm to 100 µm selectable
Display Range ±99.99999 to ±9,999.9 mm
Power Supply 24 VDC ±10 %
Power Consumption 1.2 A maximum
Communication Interface RS-232C
Analog Output ±10 V × 2 outputs
Environmental Protection IP64 (panel surface only)
Operating Temperature 0 to +40 °C
Humidity Range 35 to 85 % RH (non-condensing)
Weight Approx. 1,010 g

Source specifications: KEYENCE LS-7601 official specifications.

 

Product Introduction & Supply Chain Strategy

The KEYENCE LS-7601 is the high-performance controller for the LS-7000 Series optical micrometer system. It processes measurement data from compatible sensor heads, provides high-resolution dimensional monitoring, and supports industrial inspection applications requiring micron-level measurement control.

For factories operating LS-7000 inspection systems, maintaining New Original / New Surplus LS-7601 inventory reduces replacement risk when measurement equipment failure affects production quality control. A planned buffer stock strategy protects against extended lead times and avoids emergency purchasing at higher Total Cost of Ownership (TCO).

LS-7601

LS-7601

LS-7601

LS-7601

Installation & Configuration Guide

 

Stage 1: Pre-Installation (Prep & Safety)

  1. Apply lock-out/tag-out procedures before opening the control cabinet.
  2. Confirm the existing controller model is KEYENCE LS-7601.
  3. Record:
    • Sensor head connections
    • RS-232C communication settings
    • Analog output wiring
    • Stored measurement programs
    • Calibration parameters
  4. Photograph:
    • Rear terminal connections
    • Sensor head wiring
    • Panel mounting arrangement
  5. Use ESD protection before handling the replacement controller.

Required tools:

  • ESD wrist strap
  • Multimeter
  • Insulated screwdriver
  • Configuration backup records

 

Stage 2: Removal

  1. Disconnect the 24 VDC power supply.
  2. Verify voltage absence before removing wiring.
  3. Label all sensor and communication cables.
  4. Disconnect:
    • Sensor head cables
    • RS-232C cable
    • I/O terminals
    • Analog outputs
  5. Remove mounting hardware carefully.

Do not pull directly on sensor cables. Precision measurement systems are sensitive to connector damage.

 

Stage 3: Installation (Clone & Seat)

  1. Install the replacement LS-7601 controller in the original panel position.
  2. Reconnect all cables according to documentation.
  3. Confirm:
    • Sensor head compatibility
    • I/O wiring
    • Communication parameters
    • Program settings
  4. Secure all connectors.
  5. Verify cabinet grounding.

 

Stage 4: Power-On & Testing

  1. Apply 24 VDC power.
  2. Confirm controller startup.
  3. Check LCD display operation.
  4. Verify sensor head communication.
  5. Run measurement validation:
    • Zero calibration
    • Reference gauge measurement
    • Tolerance output test
  6. Confirm PLC or inspection system receives measurement data.

 

Firmware/Software Versions & Upgrade Notes

  • Firmware Version: Verify the installed LS-7601 firmware revision before replacement.
  • Configuration Storage: Measurement programs, calibration data, and communication settings should be documented before controller exchange.
  • Communication Compatibility: RS-232C parameters must match the connected PLC, PC, or inspection controller.

Replacement Warning

Avoid unnecessary firmware changes during a hardware replacement. A controller swap should first reproduce the existing configuration. Changing firmware, software tools, or communication settings simultaneously makes fault isolation difficult.

Before replacement:

  • Backup measurement programs.
  • Record sensor head models.
  • Save tolerance settings.
  • Document RS-232C communication parameters.

The LS-7601 supports functions including simultaneous measurement, averaging, calibration, statistical processing, auto-zero, trend display, and 16-program memory.

 

Frequently Asked Questions (FAQ)

Q1: Is the KEYENCE LS-7601 a new unit or refurbished?

The supplied KEYENCE LS-7601 is a Brand New Surplus unit. It is not removed from decommissioned equipment and is not refurbished. Each unit should maintain traceable inventory records and inspection documentation.

Q2: Why choose New Surplus instead of refurbished inventory?

The LS-7601 is a precision measurement controller. New Original inventory avoids unknown operating hours and previous environmental exposure. Refurbished measurement equipment may have hidden issues affecting calibration stability.

Q3: Is the LS-7601 obsolete?

The LS-7601 belongs to the LS-7000 Series measurement platform. Plants using this system should maintain lifecycle records and evaluate spare requirements based on production criticality.

Q4: Can the LS-7601 be replaced while powered?

No. Disconnect power before replacement unless the machine design specifically allows live maintenance. Incorrect handling can damage connected sensor heads or I/O circuits.

Q5: Will replacing the controller erase measurement settings?

The LS-7601 stores measurement configuration data. Always back up or record programs, calibration values, and communication settings before replacement.

Q6: What should be verified before ordering?

Confirm:

  • Model number: LS-7601
  • LS-7000 Series compatibility
  • Connected sensor head models
  • Required I/O configuration
  • Communication method
  • Existing calibration requirements

Q7: What stocking strategy is recommended?

For inspection systems affecting final product acceptance, maintain 1–2 units of on-site buffer stock. For lower-criticality measurement stations, vendor-managed stock or centralized spare holding may reduce carrying costs while maintaining availability.

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