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Flowserve Logix 520MD Digital HART Positioner

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  • Local status and alert messages 
  • Tuning (Auto-tune function and manual adjustment) 
  • Jog buttons to manually adjust 100% position 
  • Easy-to-install 4-20 mA analog feedback card option
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Flowserve Logix 520MD Digital HART Positioner Introduction


The Logix® 520MD Series digital positioner combines superior positioning and tuning functions with convenient setup and powerful diagnostic tools. The Logix 520MD positioner uses a multi-variable gain tuning algorithm which allows the positioner to make large step changes with minimal overshoot while achieving the resolution to respond to very small step changes. The Auto-tune procedure cycles the actuator to produce a measured response and selects gain values that provide appropriate actuator performance. The Auto-tune function includes a gain modifier selector that can be used to increase or decrease the calculated gain in order to achieve optimal performance. Easy DIP switch configuration for tuning mode and other common settings. For custom settings, tuning sets can be modified with a handheld or with ValveSight™ software, to accommodate a wide range of actuator sizes and types

Flowserve Logix 520MD Digital HART Positioner Feature

• Easy commissioning with fast, simple configuration

• Self-calibration and  auto-tune with adjustable gain selector

• Industry standard HART communications

• Low air consumption

• Two-stage control design for faster response times and tighter control.

• Standard Diagnostic functionality through ValveSight™ software


Flowserve Logix 520MD Digital HART Positioner Specification 


Input Signal Range

4 - 20 mA HART

Compliance Voltage

10 VDC

Voltage Supply (maximum)

30 VDC

Minimum Required Operating Current

3,6 mA

Feedback Shaft Rotation

min. 15°, max 90°

40° recommended for linear applications

Air Supply Quality

free from moisture, oil and dust per IEC 770 and ISA-7.0.01

Input Pressure range

1,5 to 6,0 bar (22 to 87 psi)

Air Consumption (steady state)

0,08 Nm³/h @ 1,5 bar

(0,047 SCFM @ 22 psi)

0,12 Nm³/h @ 6,0 bar

(0,071 SCFM @ 87 psi)

Output Pressure Range

0 to 100% of air supply pressure

Output Flow Capacity

2,4 Nm³/h @ 1,5 bar

(1,41 SCFM @ 22 psi)

7,0 Nm³/h @ 6,0 bar

(4,12 SCFM @ 87 psi)


Base Positioner without Acces- sories

1,2 kg (2,65 lbs)

-Manuals

Flowserve Logix 520MD Digital HART Positioner

-Data sheet


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