Yamatake AVP301 Electric Positioner with Control Valve Diagnostic Parameters

Yamatake AVP301 Electric Positioner with Control Valve Diagnostic Parameters

OVERVIEW
Smart Valve Positioner 300 Series Models AVP300/AVP301/AVP302 are current-pneumatic smart valve positioners.The 300 Series receives a DC current signal from control devices and controls pneumatic walves. In addition to this basic function, the 300 Series has communication capabilities, automatic configuration program, and self diagnostics functions that will greatly increase productivity and the effciency of plant operation.The model AVP301 has a valve travel transmitter function which transmits a 4-20 mA DC signal. The model AVP302 has a HART communication protocol.
FEATURES
1. Easy to use
Auto setup
The auto-setup function is a fully-automatic configuration program which specifies the actuator and adjusts the zero and span of the valve. The program can be turned on simply from an extemal switch so that adjustments to the valve can be perfomed quickly and safely in hazardous areas.
2.Single modelfor multiple specifcations

The 300 Series' settings can be changed without replacing any parts. A single model can be modified to suit any application.
Input range: Conigurable to any required range for split range
Flow characteristic: Linear,EQ%,Quick opening or custom user characteristics
Actuator type: Single or double acting actuator (optional reversing relay required)
3.Valve diagnostic (Model AVP302 only)

Following parameters can be monitored by HART com.municatoror Control Valve Maintenance Support System"Valstaff".
Stick slip
Total Stroke

TravelHistogram
Cycle Count
Shut-Off Count
Max.Travel Speed

4. Positive seating
The positive seating finction completely shuts off the walveifthe input signal becomes lower than previously set. This inturn enhances the full shut-off capabilities of the valves.
5. Easy maintenance

The electrical circuit section and air circuit section arecompletely separate, making the maintenance ofthe aircircuit section at the work site easy. An Auto/Manual switch is standard equipment, so it is also easy to check theoperation ofthe valve. (However, it is not available for thedouble-acting actuator)
6. Travel transmission

The model AVP301 transmits a 4-20 mA signal proportiona!to the valve travel, The walve travel can be monitored fromthe control room.
7. Can be mounted on either a single ordouble-acting actuator.

On a double-acting actuator, a reversing relay is added at the output air pressure connector.