Flowserve Accord Centura Analog Output Options Manual de usuario descargar pdf (Pagina 2)

Flowserve Corporation

1350 N. Mountain Springs Parkway

Phone: 801 489 2234

Flow Control Division

Springville, Utah 84663-3004

Facsimile: 801 489 2228

www.flowserve.com

Accord Controls

Installation, Operation and Maintenance Instructions

FCD ACAIM0073-00 (AC-73) 06/04 Page 2 of 2

Figure 1 – 4-20 mA Transmitter Diagram

Probable Cause/Solution

Potentiometer is out of adjustment (see “Resistive Feedback

Calibration” or 4-20 mA Current Transmitter Calibration”

steps 2-4).

Zero or span trim potentiometer is out of adjustment

(see 4-20 mA Current Transmitter Calibration).

Circuit Board LED not lit:

1. Loose or shorted signal connection (no loop power).

2. Controller board not responding (replace board).

Circuit Board LED lit:

1. Potentiometer disengaged.

2. Defective potentiometer or controller board. Replace

defective component.

Input signal not linear. Linkage or drive mechanism is

introducing non-linearity. Zero span trim potentiometer is

out of adjustment (see 4-20 mA Current Transmitter Calibration).

Problem

Output is not continuous throughout actuator/valve stroke

(experience a band of max. output)

Transmitter does not out 4 or 20 mA at desired end of travel.

Transmitter module does not provide current signal or provide

constant signal.

Output not linear or does not track valve position/rotation

Troubleshooting

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Flowserve Accord Centura Analog Output Options Manual de usuario Pagina 2