Flowserve Pulsair III Digital - Manual (Page 28)

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Worcester Controls Pulsair III Digital Electronic Positioner FCD WCAIM2056-00 - 08/04
fl owserve.com
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Worcester Controls Pulsair III Digital Electronic Positioner FCD WCAIM2056-00 - 08/04
9 Troubleshooting
Change in input signal to positioner does not affect actuator position.
• Check air supply pressure, air cleanliness, and connection between positioner and
acuator.
• Check input signal to positioner.
• Check mounting and connections of positioner and acuator.
Change in input signal to positioner makes actuator move to its end positioner.
• Check input signal.
• Check mounting and connections of poistioner and actuator.
Inaccurate regulation.
• Implement auto-tuning. Check for any leaks.
• Uneven air supply pressure.
• Uneven input signal.
• Incorrect actuator size for application.
• High friction in actuator/valve package.
• Excess play in actuator/valve package.
• Excess play in mounting of positioner on actuator.
• Dirty/humid supply air.
Slow movements, unstable regulation.
• Implement auto-tuing.
• Adjust the presure adjusting screws.
• Increase the deadband (Tuning menu).
• Adjust Performance (Calibrate menu).
10 Technical Data
Rotation angle: min. 30°, max. 100°
Stroke: 0.2" to 5.1" (5-130 mm)
Input signal: 4-20 mA
Air supply: 30-87 psi (2-7 bar) Free from oil, water, and moisture. Filtered to minimum
30 micron
Air delivery: 13.8 scfm (400 nl/min)
Air consumption: 0.01 scfm (<0.3 nl/min)
Air connections: ¼ " G or NPT
Cable entry: 3 x M20 or ½ " NPT
Electrical connections: Screw terminals 2.5 mm 2 / AWG14
Linearity: <1%
Repeatability: <0.5%
Hysteresis: <0.4%
Deadband: 0.2-10% adjustable
Display: Graphic, view area 0.6" x 1.6"
(15 x 41 mm)
UI: 5 pushbuttons
Processor: 16 bit, M 16C
CE directives: 93/68/EEC, 89/336/EEC, 92/31/EEC
EMC: EN 50 081-2, EN 50 082-2
Voltage drop: <10.1 V
Vibrations: <1% up to 10 g at frequency 10-500 Hz
Enclosure: IP66/NEMA 4X
Material: Die-cast aluminium, A2/A4 fasteners
Surface treatment: Powder epoxy
Temperature range: -22 to 176°F (-30 to +80°C)
Weight: W, 3 lb. (1.4 kg) Z, 6.6 lb. (3 kg)
Alarm output: Transistor Ri 1k Ω
Alarm Supply Voltage: 8-28 V