RPI Advantages

  • Process Traceability for each PCB
  • Management Data for Reflow Quality and Throughput
  • Reduced Production Costs
  • Process Quality Management – Regardless of Personnel, Equipment or Location
  • Automated Continuous Profiling
  • KIC RPI datasheet
  • KIC RPI A4 size datasheet

Technical Support 24 Hours Every Day Everywhere, Risk Free Guarantee All KIC products are designed to give maximum value and fast payback by streamlining your thermal process. Investment in a KIC product is a step toward total process control and quality management. All KIC products come with a no questions asked, 30 day money back guarantee. For more information on any of our products or service please visit us on the Web at: www.kicthermal.com or www.KIC.cn

Service Available

  • Technical Support
  • Installation and Setup
  • Application Support
  • Hardware Support
  • Guaranteed Warranty

Reflow Process Index

Managing the Ultimate Reflow Oven Output

A reflow oven is a very busy machine striving to control multiple variables while heating and cooling PCBs. The purpose of the oven, however, is very simple.
A. To create a specific PCB profile
B. To maintain required throughput.
The KIC RPI optimizes both of these outputs while sharing the data on a continuous basis with the authorized personnel.

Features

The RPI utilizes embedded sensors for heat and conveyor speed to automatically measure and display the following information:

  • PCB profile
  • Profile’s “fit” to the process window
  • Continuously displayed production details
    • #PCBs produced
    • Product name and lot ID
    • Production date and time stamp
    • Oven name
  • PCB process traceability
  • SPC & Cpk charts
  • Statistics of defects and process yields
  • Pareto chart on out of spec occurrences

The RPI features include:

  • Profile optimization software
  • Barcode reading software
  • Remote Process Monitoring software
  • Alarm Relay
  • Light Bar

Fail-Safe Operation

  • There are numerous opportunities for mistakes and defects to occur in the reflow process. Human errors include loading the wrong oven program or loading the wrong PCBs. The RPI’s bar code capability prevents such mismatch.
  • Another common defect occurs when the process drifts out of spec or out of control. The RPI will immediately alert the responsible personnel of such occurrences and can shut down the infeed conveyor if desirable.
  • SPC charts will alert the engineer of upcoming trouble, typically when the reflow oven is still operating within spec.

Bottom Line

The RPI indexes the single most important output of a reflow oven, namely how well the profile conforms to the required spec. This index is independent of type of oven, PCB type, personnel, and even geographical location. The profile index along with yield and production data is shared with the responsible personnel in such a way that the production ovens can maintain an efficient operation. The RPI is designed to improve production quality by ensuring that each and every PCB is processed in spec. The RPI will reduce cost through improved uptime, reduced scrap and rework, and minimize labor input.

Calculating Formulas

Calculating Opportunities, DPMO and Yield

Total Opportunities

Number of boards x Number of TC points x Number of Profile Specs = Total Opportunities (2 x 5 x 5 =50)

DPMO

Number of Total Errors ÷ Total Opportunities x 1,000,000 (4 ÷ 50 x 1,000,000 = 80,000)

Yield

100 ÷ Number of Boards x Number of Boards with Errors = % of Error. 100% – % of Error = Yield

Data acquisition unit/Probes


Accuracy:± 2°F (1.2°C)
Readings/second: 13
Thermocouples:Type K
Temperature Range: -150°C to 450°C
Dimensions:
Data acquisition unit (LxWxH):308.6mm x 173.5mm x 35.8mm
Probes: length and thermocouple spacing is customized to each oven
Communications: Ethernet, RJ-45 connector
Computer Capability:PC
Power Requirements: 12V DC @ 300mA

Note: The RPI requires a KIC profiler

RPI System

System Components

  • Two (2) thermocouple probes (each probe has 15 thermocouples)
  • 1 ea. data acquisition unit
  • 1 ea. speed encoder
  • 1 ea. board sensor
  • 1 ea. alarm relay
  • 1 ea. light tower
  • 1 ea. KIC RPI software with software protection dongle

 

Computer Configuration

Minimum System Requirements

  • Dual Core / 1 GHz Processor PC with 2 GB RAM
  • 2 GB available storage
  • Video 1024 x 768 resolution / 16-bit
  • 1 available USB port (for data download)
  • 1 available USB port (for software key)
  • 1 available Ethernet port or 1 available USB port with Ethernet to USB