Azbil 700 series - Input Range; Valve System

4-5
4-2-3 InputRange
Sets the current input value when the valve travel is at 0% (Input Range Low (Close))
and the current input value when the valve travel is at 100% (Input Range High (Open)).
An input in the 4–20 mA range can be used.
Select [Device] → [Configuration] → [Input Range].
Cautions
Changing the input signal range will move the valve, which is dangerous.
Ensure ahead of time that there will be no injuries or effects on the processes if
the valve is moved.
Input Range High (Open/100%): Set the input signal at 100% travel.
Input Range Low (Closed/0%): Set the input signal at 0% travel.
Handling Precautions:
- Set the current input span to not exceed 4 mA for (Input Range High
(Open) - Input Range Low (Close)). If the current input span is less than
8 mA, the precision will be ±1.5% of full scale.
- Set the value so that the operation direction is the same when the input
signal is 0 mA and 4 mA. The following conditions must be satisfied.
If the valve is fully closed at power-off :
Input Range High (Open/100%) > Input Range Low (Closed/0%)
If the valve is fully open at power-off :
Input Range High (Open/100%) < Input Range Low (Closed/0%)
4-2-4 Valve System
Specify the operation of the control valve (actuator and valve) and the positioner.
Select [Device] → [Configuration] → [Valve System].
Cautions
It is dangerous because the valve moves when the settings are changed. Be
prepared in advance to prevent injury and effects on the process when the valve
moves.
• Actuator Type
- Linear
Linear motion valve
- Rotary/90°
When the distance between the feedback lever of the rotary actuator (90°) and the pin
is longer than the distance from the valve shaft
- Rotary/Other
When the distance between the feedback lever of the rotary actuator (around 60°) and
the pin is longer than the distance from the valve shaft
- Rotary sub/90°
When the distance between the feedback lever of the rotary actuator (90°) and the pin
is shorter than the distance from the valve shaft