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Bimba Model PCS Pneumatic Control System
Learn how to:
>
Recognize the components required for a PCS system.
>
Understand how the PCS components are interconnected.
>
Be able to adjust Zero, Span, Deadband, Decel.
>
Understand basic PCS operation.
Components required for a complete closed loop system:
>
PCS electro-pneumatic controller (includes valves).
>
PFC, PFCN, PTF, or PTFN cylinder.
>
Air supply (70-80 psi required for proper operation).
>
24 VDC fixed for PCS (regulated and filtered).
>
0-10 VDC variable control voltage (clean, stable, noise free).
>
DPM panel meter (for direct positioning readout).
>
120 VAC line power for DPM if used.
The information presented is in Bimba's best engineering opinion and should be used for reference only. Recommendations derived should be verified under actual operating
conditions. Bimba reserves the right to change specifications without prior notice.
Bimba Manufacturing
Telephone: 708.534.8544
Email: cs@bimba.com
www.bimba.com
PCS-PFC Quick Set-up Instructions
Leaders in Actuation.
Technical Tips
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Table of Contents
Summary of Contents for IMI Bimba PCS
- Page 1 Technical Tips PCS-PFC Quick Set-up Instructions Bimba Model PCS Pneumatic Control System Learn how to: > Recognize the components required for a PCS system. > Understand how the PCS components are interconnected. > Be able to adjust Zero, Span, Deadband, Decel. >...
- Page 2 Technical Tips PCS-PFC Quick Set-up Instructions Getting Started Fittings should be firmly attached to the PCS manifold and PCS ports. Teflon tape must be used to seal the threads. Connect air hoses from the PCS control to the PFC. Use Figures 4 and 5 on the right.
- Page 3 Technical Tips PCS-PFC Quick Set-up Instructions Set-up and adjustments Set the deadband The deadband adjustment changes the tolerance on the ending position of the PFC rod. Smaller deadbands mean a tight tolerance and higher positioning accuracy. Higher deadbands are required for greater loads. Application sizing chart (PCS manual page 23, below) identifies “Zero Friction Deadband Voltage”...
- Page 4 Technical Tips PCS-PFC Quick Set-up Instructions Set the Span adjustment or end position Set control voltage to maximum (10 VDC). Turn SPAN CCW until rod is in the desired fully extended position. The green LED should not be on continuously. Decel adjustment The decel adjustment regulates the distance over which the PFC rod slows to a stop.
- Page 5 Technical Tips PCS-PFC Quick Set-up Instructions Troubleshooting Hints... Air pressure should be 70-80 PSI. Lower air pressures may produce erratic operation. If there is noise on the AC power applied to the electronics, the noise will be superimposed on the DC power supplied to the PFC. Most of the time this will not be an issue.
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