71
Tuning the Pressure Balance of
Maintenance
Tuning the Pressure Balance of Control Relay
For a double-acting cylinder actuator, adjust the pressure balance of the control relay, if
necessary.
The optimal point of pressure balance differs slightly depending on the packing and
load characteristics of the cylinders, but in general, approximately 50 to 90% of the
supply air pressure is appropriate.
The pressure balance of the FVP110 is set to approx. 75% at the time of shipment.
To reduce the hunting phenomenon and air consumption adjust the balance pressure.
However, if the pneumatic piping is connected to the valve actuator, the pressure of a
cylinder on one side becomes higher, and the balance cannot be maintained.
To increase the balance pressure:
❑
Turn the screw for adjusting the balance pressure (Figure 44) counterclockwise.
To decrease the balance pressure, turn the screw clockwise.
Do not
loosen the
screw beside the adjustment screw.
Figure 44
Tuning the Pressure Balance of Control Relay
Summary of Contents for FVP110
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Page 97: ...81 Dimensions Standard Specifications Dimensions Figure 46 Single Acting Actuator Dimensions ...
Page 99: ...83 Dimensions Standard Specifications Figure 48 Terminal Configuration ...
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Page 115: ...99 View Object Configuration Table 11 View Object for Transducer Block continued ...
Page 117: ...101 View Object Configuration Table 18 View Object for AO Function Block ...
Page 119: ...103 View Object Configuration Table 20 View Object for OS Function Block ...
Page 121: ...105 View Object Configuration Table 22 View Object for Resource Block ...
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Page 238: ...FVP 110 Fieldbus Valve Positioner Manual 222 GE Energy Table 72 LM Parameter Part List ...
Page 239: ...223 LM Parameter List Link Master Functions ...
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Page 262: ...FVP 110 Fieldbus Valve Positioner Manual 246 GE Energy Table 85 Download Error Codes ...
Page 265: ...249 Comments on System Network Software Download Table 88 DOMAIN_DESCRIPTOR ...
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Page 289: ...273 H Customer Maintenance Parts List ...
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