SMSC EMC2102 User Manual
Insert evb graphic/photo here, Fan speed control with the emc2102 device
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Table of contents
Document Outline
- 1 Overview
- 2 Audience
- 3 References
- 4 The Evaluation System
- 5 Basic Operation Experiments
- 5.1 Experiment 1 - Manual Fan Control
- 5.2 Experiment 2 - RPM Based Closed-Loop Fan Control
- 5.3 Experiment 3 - Spin-up Configuration Options
- 5.4 Experiment 4 - RPM Drive Mode Rate Controls
- 5.5 Experiment 5 - Optimizing RPM Control Response
- 5.6 Experiment 6 - Limits and Alerts
- 5.7 Experiment 7 - Troubleshooting
- 5.7.1 Repetitious Spin-up Routine Caused by Incorrect Settings
- Figure 5.23 Fan Spin-up Routine Restarted Repeatedly
- Figure 5.24 Theoretical Plot of Case 1
- Figure 5.25 Spin-up Case 1 Fix 1
- Figure 5.26 Spin-up Case 1 Fix 2
- Figure 5.27 Theoretical Plot of Case 2
- Figure 5.28 Spin-up Case 2
- Figure 5.29 Theoretical Plot of Case 3
- Figure 5.30 Spin-up Case 3
- Figure 5.31 Spin-up Routine Restarted During Normal Operation
- Figure 5.32 Theoretical Plot of Case 4
- Figure 5.33 Spin-up Case 4
- Figure 5.34 Spin-up Case 5
- Figure 5.35 Spin-up Case 5 Fix
- 5.7.1 Repetitious Spin-up Routine Caused by Incorrect Settings
- 6 Appendix
- 6.1 DC Fan Basics - Poles, Tach Meter Pulses and Edges
- 6.2 Characterizing a DC Fan with EVB-EMC2102 and ChipMan
- 6.2.1 General Setup
- 6.2.2 Set the Correct LIMIT2K Value
- 6.2.3 Determine the Number of Poles and the Maximum Fan Speed
- 6.2.4 Determine the Minimum Startup Speed
- 6.2.5 Determine the Stall Speed
- 6.2.6 Determine the Minimum Valid TACH Speed
- 6.2.7 Determine the Spin-up Levels (rpm60 and rpm75)
- 6.2.8 Using the Tested Parameters