Table 13: Pneumatics Single Acting Standard Flow
Air Supply
Dry, oil-free, 5 micron filtered air (per ISA S7.3)
Action
Direct Acting
Supply Pressure
20-100 psi max. (1.4 to 6.9 bar)
Regulate 5 to 10 psi above actuator spring range. Do not
exceed actuator rating.
Air Delivery - Single Acting Relay
10.0 scf/min. (283 l/min) at 30 psi (2.1 bar) supply
16.6 scf/min. (470 l/min) at 60 psi (4.2 bar) supply
23.3 scf/min. (660 l/min) at 90 psi (6.3 bar) supply
Air Capacity
(flow coefficient)
Loading CV = 0.57
Venting CV = 0.53
Air Consumption
0.2 scf/min. (5.7 sl/min) at 30 psi (2.1 bar) supply
0.26 scf/min. (7.4 sl/min) at 45 psi (3.1 bar) supply
Air Supply Failure
Single Acting Relay
On supply failure the actuator output fails to atmosphere.
Some overshoot may occur when air pressure returns after a
period without air supply pressure. Always set control set
point to 0%, and put the process control system in manual,
for smooth recovery from air supply failure.
Loss of Input Signal
Actuator Output fails to atmosphere
Output Pressure
0-150 psi (10.3 bar) max
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Table 12: System Connectivity
HART
®
Physical Device Type
Valve positioner; HART
®
device type 7, Device type 202, 0, 00CA)
DD Registered with HART
®
Communi-
cation Foundation
Yes
Integration with HART
®
Host software
ValVue AMS SNAP-ON application available, Plug-In Application For Yok-
ogawa
®
PRM, ValVue For Honeywell
®
FDM, Device Type Manager (DTM) for
FDT Host
Diagnostics
Standard:
Alarms, cycle counter, travel accumulator, time open, time close, time near
close, Step Test, Positioner Test
Advanced:
Includes Standard Diagnostics and the following: Low Air Supply alarm,
Valve Signature (Friction, spring range, seat profile)
Содержание SVI II AP
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