Flowserve 1000 Series Digitial Positioner - Manual (Page 15)

FCD AXAIM0064-00 (AUTO-64) 08/04 Page: 15 of 16
© 2004, Flowserve Corporation, Printed in U.S.A.
Logix Series 1000 Digital Positioner
Installation, Operation and Maintenance Instructions
Flowserve Corporation 1350 N. Mountain Springs Parkway 1978 Foreman Dr.
Flow Control Division Springville, Utah 84663-3004 Cookville, TN 38501
www.flowserve.com Phone: 801 489 2233 Phone: 931 432 4021
© TriCom, Inc., 2004, All Rights Reserved.
Failure Problem Cause Corrective action
No LED is blinking 1. Current source below 3.2 mA 1. Verify current source is
2. Incorrect wiring polarity outputing at least 3.2 mA
3. Stroke/actuator calibration in 2. Check wiring for correct polarity
progress 3. Normal operation
Erratic communications 1. Current source bandwidth not 1. Maximum allowable current
limited to 25Hz source rate of change is 924 mA
2. Maximum cable length or cable per second
impedance exceeded 2. Check cable conductor size,
3. HART modem connected to PC length and capacitance.
RS-232 port not receiving Reference page 4, ‘Cable
enough power Requirements.’
4. Interference with Intrinsically 3. Verify battery is not low if using
Safe barrier a laptop PC
4. Must use HART compatible
Intrinsically Safe barrier
Unit does not respond to analog 1. Unit is in digital command mode 1. Switch to analog command
commands 2. Error occurred during calibration mode.
Red LED blinking 2. Correct calibration error
Recalibrate
Valve position reading is not 1. Stem position sensor mounting 1. Remove feedback sensor
correct is off 180 degrees Rotate so that the dot on shaft
2. Stroke not calibrated faces wiring.
3. Tight shutoff is active 2. Calibrate valve stroke
4. Custom characterization or soft 3. Verify tight shutoff setting
stops active 4. Verify custom settings
Position is driven fully open or 1. Stroke not calibrated 1. Calibrate valve stroke
closed and will not respond to 2. Inner-loop hall sensor not 2. Verify hardware connections
command connected 3. Check ATO (Air-to-open) and
3. Wrong air action entered in ATC (Air-to-close) settings.
software Recalibrate
4. Actuator tubing backwards 4. Verify ATO/ATC actuator tubing
5. Pressure modulator minimum 5. Check minimum pressure
pressure too high setting and adjust if necessary
6. Control parameter inner-loop 6. Adjust inner-loop and see if
offset is too high/low proper control resumes
Sticking or hunting operation of the 1. Contamination of the spool valve 1. Check air supply for proper
positioner assembly filtering and meeting ISA
2. Control tuning parameters not specifications S7.3
correct 2. Lower proportional gain settings
Positioner is not responding when 1. Refer to page 11 1. Refer to page 11
Quick-Cal button is pressed
Troubleshooting Logix 1200 Positioner Systems
(AXAIM0096-00) Logix 1000 IOM 8/6/04 3:34 PM Page 15