A technical bulletin detailing the features, operation principles, specifications, and diagnostic capabilities of the Flowserve Logix 510si and 520si…
The Flowserve Logix 500si series represents the next generation of intrinsically safe digital positioners, building on the success of the original Logix 500 design. The family includes the Logix 510si for analog (4–20 mA) markets and the Logix 520si "smart" positioner capable of HART communication. Key benefits include simple push-button calibration, low air consumption via piezo technology, compact modular design, and extensive diagnostic capabilities accessible through local LEDs or handheld communicators.
| Input Signal Range | 4–20 mA |
|---|---|
| Compliance Voltage | 6.0 VDC |
| Voltage Supply (maximum) | 30 VDC |
| Minimum Required Operating Current | 3.6 mA |
| Operating Temperature (Standard) | -4–176°F -20–80°C |
| Housing Material | Cast aluminum, powder-painted |
| Weight (Without Pressure Gauges) | 2.7 lb. (1.2 kg) |
Configuration and calibration are performed using local configuration switches and a QUICK-CAL button, without requiring additional handheld devices.
The positioner consumes 0.047 SCFM @ 22 psi (0.08 Nm³/h @ 1.5 bar) or 0.071 SCFM @ 87 psi (0.120 Nm³/h @ 6.0 bar).
The positioner provides internal diagnostic codes via LEDs, indicating status such as normal operation, calibration errors, or linearity deviations.