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STI S.r.l. – Via Dei Caravaggi 15, 24040 Levate (BG) – ITALY www.imi-critical.com
Manual 4028 – rev.06 11/2018 – FT - 4 -
2.0 DESCRIPTION
The FasTrak™ positioner is a high-capacity, high-precision digital-pneumatic valve controller that replaces
conventional positioner. The FasTrak™ has several advanced control and diagnostic features.
• Excellent dynamic performance
• High precision and high flow positioner.
• Configuration and calibration through HART, serial or handheld device.
• Self calibration.
• Compatible with double and single acting actuators, with/without spring, piston or diaphragm.
• Auto tuning on control stroking time applications from 0.5 sec to 50 sec.
• Control and PID parameter independently adjustable for open and close.
• Stroking time user independently adjustable to open and to close.
• Travel limit position independently user adjustable to open and to close up to 50% of stroke.
• Tight shut off position to open and to close independently adjustable up to 50% of stroke.
• Pressure shut off to open and to close independently adjustable.
• Split range user adjustable capability.
• Travel characterization linear, eq% 25:1, 30:1, 50:1, 1:50, 1:30, 1:25, user adjustable 16 point.
• Visualization of selected characterization curve with limit and shut off by Remote Control.
• Analog output 4 20mA position.
• Two digital input user configurable to fully open or to fully close.
• Two digital output user configurable as virtual limit switch or to indicate position error or low pressure.
• Power/signal fail position mechanically configured (not software adjustable).
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