Azbil 700 series - Page 144

D-2
Azbil CorporationNo. SS2-AVP702-0100
Individual specications
Device TAG No. (8 characters) Be sure to congure the data.
Long TAG No. (max 32 characters) Congure the data if necessary.
Input range
4 to 20mA DC Note: Minimum span 4mA
Input characterization
*1
L: Linear
EQ%: Equal percentage
QO: Quick opening
USER: User-dened
Positioner action
*2
D: Direct for single acting actuator
R: Reverse for single acting actuator
W: For double acting actuator
Supply pressure classication
1: 140≤Ps≤150kPa
2: 150<Ps≤300kPa
3: 300<Ps≤400kPa
4: 400<Ps≤450kPa
5: 450<Ps≤700kPa
Unit of pressure gauge
A: kPa
B: kgf/cm
2
C: MPa
D: bar
E: psi
Valve closed position DOWN, UP
Actuator type
L: Linear
R90: Rotary 90°
R60: Rotary 60°
RS90: Rotary sub 90°
RS60: Rotary sub 60°
Travel transmitter fail safe direction
(Model AVP701 only)
DOWN, UP
e setting of failure output direction cannot be changed aer delivery.
LCD facing upwards
X: No optional parts
A: LCD cover and Pressure gages jointed to elbows
B: LCD cover
C: Pressure gages jointed to elbows
*1. Refer to following when selecting the input/ output characteristics.
Figure 4. Input characterization
Selection of input characterization
e ow characteristic of a control valve is set by selecting the valve plug characteristic, and the
input-output characteristics of the positioner must be specied as linear. However, if the valve
plug ow characteristic, which depends on the control valve’s shape and structure, does not meet
requirements, you can correct the overall ow characteristic of the control valve by specifying
“equal percentage” or “quick opening” for the input-output characteristics of the positioner, as
shown in Table 2.
Table 2. Control valve ow characteristics correction by the positioner
Characteristic of valve plug Input characterization of
positioner
Overall ow characteristic of
control valve
Linear Quick opening Quick opening
Linear EQ% EQ%
EQ% Quick opening Linear
Note: If the valve plug characteristic is “quick opening,” the overall ow characteristic of the con-
trol valve cannot be linear even if “equal percentage” is set for the positioner’s input-output
characteristics. (is is because when the valve plug characteristic is “quick opening,” the
control valve works as an ON/OFF valve and it is dicult to correct its characteristics by
changing the setting of the positioner.)
*2. When the power is shut o, select D (Direct for single acting actuator) to make the output air pressure of this device zero, and R (Reverse
for single acting actuator) to make the output at the maximum air pressure (supply air pressure). Positioner action diers from actuator
and control valve action, so be careful in selecting the positioner’s action.
Quick Opening
Travel (%)
Equal Percentage
Linear
100
1000
Input Signal (%)
8