Flowserve 520si Digital Positioner - Manual (Page 5)

5
Shipping weights
(incl. mounting kit)
Linearity < ± 1,0%
Resolution < 0,1%
Repeatability < 0,2%
Deadband < 0,2%
Operating Temperature Standard -20 – ˚80 C
-4 – 178 ˚F
Low -40 – 80 ˚C
-40 – 178 ˚F
Transport and Storage -40 – 80 ˚C
Temperature -40 – 178 ˚F
Operating Humidity 0 – 100% non-condensing
Intrinsic Safety Logix 520 si - 15:
ATEX II1 G EEx ia IIC T6
3 LOGIX 520 si OVERVIEW
The Logix 520 si is a two-wire, 4-20 mA input digital valve
positioner. The Logix 520 also utilizes the HART protocol to
allow two-way remote communication with the positioner. The
Logix 520 si positioner controls single-acting actuators with
linear and rotary mountings. The Logix 520 si is completely
powered by the 4-20 mA input signal. The minimum input
signal required to function is 3,6 mA.
Since the positioner is insensitive to supply pressure changes
and can handle supply pressures from 1,5 to 6 barg (22 to 87
psig), a supply regulator is usually not required; however, in
applications where the supply pressure is higher than the
maximum actuator pressure rating a supply regulator is re-
quired to lower the pressure to the actuator’s maximum rat-
ing (not to be confused with operating range). A coalescing
air filter is recommended for all applications due to the close
tolerances in the positioner.
NOTE: The air supply must conform to ISA 7.0.01or
IEC 770 (a dew point at least 10 ˚C / 18 ˚F below
ambient temperature, particle size below five microns
– one micron recommended – and oil content not to
exceed one part per million).
4 SPECIFICATIONS
Input Signal Range 4 - 20 mA
(with HART)
Compliance Voltage 12,0 VDC
(with HART signal)
Voltage Supply (maximum) 30 VDC
Minimum Required 3,6 mA
Operating Current
Table 1: Input Signal
Feedback Shaft 0° to 90° normal
Rotation 0° to 40° minimum
Table 2: Stroke Output
Supply Air Quality Free from moisture, oil and
dust per IEC 770 and ISA-7.0.01
Input Pressure Range 1,5 to 6,0 bar (22 – 87 psi)
Air Consumption 0,08 Nm 3 /h @ 1,5 bar
(steady state) 0,047 SCFM @ 22 psi
0,120 Nm 3 /h @ 6,0 bar
0,071 SCFM @ 87 psi
Table 3: Supply Air
Output Pressure 0 - 100 % of supply air
Range pressure
Output Flow Capacity 2,4 Nm 3 /h @ 1,5 bar
(input @ pressure) 1,41 SCFM @ 22 psi
7,0 Nm 3 /h @ 6,0 bar
4,12 SCFM @ 90 psi
Table 4: Output Signal
Housing Material Cast aluminum,
powder-painted
Soft Goods Nitrile
Weight 1,2 kg (2,7 lbs)
Table 7: Physical Specifications
Table 6: Environmental Conditions
Table 5: Performance
Characteristics (typical)
Specification Logix 520 si
with pressure gauges 1,6 kg
without pressure gauges 1,2 kg
Table 8: Shipping weights