LOGIX si OVERVIEW. The Logix si is a two-wire, mA input digital valve positioner. The Logix si positioner controls single-acting actuators with . Mounting of the Logix si Positioner on a Linear Pneumatic Actuator. ( NAMUR / IEC document describes the setting and use of the Logix si. Available Logix + Models. Part of the versatile Logix positioner series the Logix + and Logix + digital positioners fulfill the ever growing.

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Now connect the air supply to the filter, which is connected to the Logix Series positioner.

Error occurred during calibration 1. Refer to Cable Requirements on page The switching function is triggered if a ferromagnetic object vane is inserted between the coils.


As the valve approaches the desired position, the difference between the commanded position and the measured position becomes smaller and the output to the piezo is decreased. Disabled retains the last configuration in memory from the last successful calibration before the switch was set to Disabled.

Page 13 Logix si Status Condition Codes Colors Identifier Indication and resolution Y – – – Any sequence starting with a yellow light indicates that the unit is in a special calibration or test mode, or that there was a calibration problem. Logix si positioner accessories: Press the simultaneously to put the unit back inoperation.

Certificates 26 27 28 29 30 Mounting the positioner Figure 3 1. The infinite resolution valve position sensor. Fit pin on valve stem. For wiring, the following notes should lpgix observed: Off Forces the positioner to use one of the factory preset tuning sets determined by the rotary Gain selector switch.

To clear the condition use handheld or Flowserve supplied software to reset the indicator if more travel is needed or adjust the command signal back in the specified range. Additionally, the electrical conduit should be earth grounded at both ends of its run. Hall sensor lower position – Check to make sure the air supply is connected. For this reason they should not be used in other applications without first contacting the manufacturer. Attach the positioner to the pre-assembled mounting bracket and fasten it with two hexagon head screws and two lock washers.


Product users and maintenance personnel should thoroughly review this bulletin prior to installing, operating or performing any maintenance.

After installation, ensure all screw connections are tightened correctly and all moving parts are free from excessive friction. Logix si also utilizes the HART protocol to allowe twoway remote communication with the positioner. In such cases pay particular attention to personal protection protective clothing, gloves, glasses etc. Ensure the take-off arm slot is centered. To control cable resistance, No.

Follower Arm standard 11 Mounting the positioner Figure 7 2. Any sequence starting with a yellow light indicates that the unit is in a special calibration or test mode, or that there was a calibration problem. The Local interface consists of: Limit switch To connect switches — see termination table. This two-stage control provides for more responsive and ,ogix control than is possible with a single stage control algorithm.

Digital Positioners – Logix si | Flowserve

The grounded scrrew must not be used to termingate signal shield wires. As the actuator strokes, the rotation of the feedback gear should be between the inner control markings. Unpacking Each delivery includes a packing slip.

Feedback no-motion during calibration – Indicates that there was no motion of the actuator based on the current stroking time configuration. Fit lever arm to positioner shaft. The position of the pilot valve in the pneumatic amplifier is measured and relayed pogix the inner loop control circuit.


Check internal data to verify correct settings. When installing Logix si intrinsically safe, always consider the llogix on page If the time out occurred because the actuator is very large then simply retry the Quick-Cal and the positioner will automatically adjust for a larger actuator by doubling the time allowed for movement.

Summary of procedures for calibration laboratories. Current source bandwidth not limited to 25Hz 2. RRYY Bad electronic assembly – replace.

Logix 500si series Digital Positioners Operation Maintenance

Tubing positioner to actuator After mounting has been completed, tube the positioner to the actuator using the appropriate compression fitting connectors: Connect the outlet connector Figure 8 of the positioner with tubing, independent of the action direct or reverse. Position Deviation – The position has exceeded user defined error band between command and position. Principle of Operation 5. The Logix si positioner controls actuators with linear and rotary mountings.

The Logix si is completely powered by the mA input signal. The air supply must conform to ISA 7.

Flowserve 510si IOM Logix User Manual

Feedback span – The range of motion of the position feedback arm was too small. Maximum allowable current source rate of change is mA per second 2. Position Lower – The position has reached or is exceeding a user defined lower travel indicator similar to a limit switch indicator. Normally ,ogix will be 4 mA, but if split range operation is required use the minimum current for the desired operating range. See detailed instructions in section Loosen the follower pin and shift logux along the follower arm until the control marking on the feedback gear Figure 4 is horizontal points to the center of the feedback potentiometer.