PSTC - Linear Actuator Drive - General Manual Rev 2.pdf

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Powered by The SolarTrak® Industrial Solar Tracking Controller Single-Phase 208 AC Solid-State Power Control Three-Phase 208 AC Solid-State Power Control Designed and manufactured by Enhancement Electronics, Inc. #10 Camino del Senador Tijeras, NM 87059-7420 U.S.A. (505) 281-0399 (Voice) (505) 281-4248 (Fax) E-Mail: SolarTrak@TapTheSun.com Website: http://www.tapthesun.com © 2003 Enhancement Electronics, Inc. 2
The Powertracker <strong>Drive</strong> Unit Standard Operation: The Powertracker <strong>Drive</strong> Unit is equipped with a ½ horsepower AC bi-directional motor. The motor is controlled by the SolarTrak® Controller software via three high-power solid-state relays, two for directional control on one of the AC phase legs and one more to disconnect the second phase leg, leaving the motor cold to AC power when the unit is not actively driving. The 3-phase version utilizes a solid-state H-bridge which swaps two legs of the 3-phase power to produce the reversing function as well as switching the third leg on and off to create the same effect and requires five solid-state relays. The Powertracker utilizes an optional SolarTrak® function referred to as ‘Backtracking’. This function, when applied to single-axis flatplate PV at low sun angles such as in the early morning and late afternoon, prevents shading of one row by another thereby maintaining equal illumination on all of the cells at all times. Direct Tracking The range of motion of a typical multi-row system is seldom more than +/- 45 degrees. As long as the Sun is higher than that in the sky, the panels can be positioned to maximize the isolation angle of incidence, however, as the Sun angle decreases in the afternoon or before it has risen high enough in the morning, shading of panels by those in adjacent rows will occur. Potential shading due to low sun angle Although PV cells in parallel can be individually shaded and simply lose that much proportional power, those that are in series are affected differently. If a single cell in a chain is shaded, it will stop conducting and deactivates the entire chain. If there is enough power involved, the shaded cell can be permanently damaged. © 2003 Enhancement Electronics, Inc. 3
Page 1: Owner’s Manual For The SolarTrak
Page 5 and 6: Determining the Current Operational
Page 7 and 8: Installation and Check-out Instruct
Page 9 and 10: 4. Dual 208 VAC Power Source w/Grou
Page 11 and 12: 4. 208 VAC Power Source w/Ground --
Page 13 and 14: Uncrating and Installation: Each sh
Page 15 and 16: Power Connection and Startup Sequen
Page 17 and 18: Display/Edit Parameters on SolarTra
Page 19 and 20: Section 5. Calibration to Onsite As
Page 21 and 22: 3. Press Enter/Select again. The di
Page 23 and 24: User Interface Module Section 1. Me
Page 25 and 26: pressing the A or B button moves th
Page 27 and 28: DOS Command Line Option Switches St
Page 29 and 30: E: Setting up Batch File Execution
Page 31 and 32: INITIAL STARTUP: “Main Control Pa
Page 33 and 34: The Configure (CFG) Command: The CF
Page 35 and 36: Parameter Tables: Once in either th
Page 37 and 38: . Ax1 Gear Ratio : 3.7800 Timed Mot
Page 39 and 40: Moving Parameters between SolarTrak
Page 41: Array Angle S = -45° West L3 Linea

PSTC - Linear Actuator Drive - General Manual Rev 2.pdf

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