EDS9-50B Datasheet, PDF (1/4 Pages) Fuji Electric – OPTICAL-PNEUMATIC POSITIONER

FFI SYSTEM
OPTICAL-PNEUMATIC POSITIONER
DATA SHEET
ZLF
This instrument converts the optical signal from a mas-
ter station or the like into a pneumatic signal (0.2 to 1.0
kgf/cm², etc.) in order to drive a diaphragm type control
valve. The operating position of the valve is fed back via
link to this positioner to enable accurate positioning.
A built-in microcomputer provides intelligent digital pro-
cessing of signals with a high precision, and the use of a piezo-
electric element flapper makes for a low power consumption.
This articles are φ6mm optical fiber cable connection type.
SPECIFICATIONS
Functional specifications
Input signal: FFI system optical digital signal
Operating air pressure, supply air pressure:
Operating air pressure
19.6 to 98.1kPa {0.2 to 1.0kgf/cm²}
39.2 to 196.1kPa {0.2 to 2.0kgf/cm²)
3 to 15psi
3 to 27psi
6 to 30psi
Supply air pressure
140kPa {1.43kgf/cm²}
240kPa {2.45kgf/cm²}
20± 1psi
32± 1psi
35± 1psi
Power supply:
Self-diagnosis:
Built-in lithium battery (single battery lasts
about 2 years)
Diagnosis results can be displayed on op-
tional indicator unit and also transmitted
to master station.
Contents
HHC, MS (*¹) Indication
Battery voltage
Output failure (*²)
Battery voltage drop
Notes: *(¹) HHC: hand-held communicator,
MS: master station
(²) When output overflows, or offset is
large
Operation at emergency:
Output operation is settable by remote
means (HHC, MS) in an emergency
(when input fails) (available on request).
• Holding of output value just before fail-
ure
• Scale-out of set value below 0%
• Scale-out of set value above 100%
Explosionproofing:
JIS i3nG5, unnecessary for safety-barrier
Ambient temperature:
–20 to +60 °C (–10 to +60 °C for indica-
tor unit)
Storage temperature:
–30 to +70°C
Ambient humidity:
0 to 95%RH
Transmission: Half-duplex bidirectional optical transmis-
sion system using single optical fiber cable
Transmission distance; 1.2km max.
(not affected by noise, surge or the like)
Applicable valve: Diaphragm control valve with top diam-
eter of φ240 or more; stroke 10 to 90mm
(feedback lever rotating angle 10 to 30 °)
Performance specifications
Accuracy rating: ± 1.0% of full scale (output ripple approx.
± 0.2%)
Response speed: Approx. 4 seconds (for 90% response)
(with control valve having top diameter
φ240 and lift of 16mm)
Input/output characteristic:
Linear
Reference air consumption:
12Nr/min (at supply air pressure of
140kPa {1.43kgf/cm²}
20Nr/min (at supply air pressure of
240kPa {2.45kgf/cm²}
Maximum air supply/discharge flow rate:
60Nr/min (at supply air pressure of
140kPa {1.43kgf/cm²}
80Nr/min (at supply air pressure of
240kPa {2.45kgf/cm²}
EDS9-50b
Date Jul. 31, 1994