User Instructions - Logix® 520MD+ Series Digital Positioner
FCD LGENIM0105-00
© Flowserve Corporation 7 Field Trial Version – Printed October 28, 2011
3 SPECIFICATIONS
3.1 Input Signal
Table 1: Input Signal
Positioner Alone
or with
Multi-Function Card
Positioner with
Safety Discrete
Output Card
Power Supply Two-wire, 4-20 mA
10,0 VDC plus line
losses.
Two-wire, 4-20 mA
13,0 VDC plus line
losses.
Input Signal
Range
4 - 20 mA (HART)
Compliance
Voltage
10,0 VDC
@ 20 mA
13,0 VDC
@ 20 mA
Effective
Resistance
500 Ω @ 20 mA
Typical
650 Ω @ 20 mA
Typical
Maximum Supply
Voltage
30 VDC
Minimum
Required
Operating Current
3,8 mA
Maximum Shut-
down Current
3,6 mA
Communications HART protocol
3.2 Air Supply
Table 2: Air Supply
Minimum Input
Pressure
1,5 Bar (22 PSI)
Maximum Input
Pressure
Single Acting Relay – 6,2 Bar (90 PSI)
Double Acting Relay – 10,3 Bar (150 PSI)
(Set supply pressure as low as possible
for maximum relay life.)
Air Supply Quality The air supply must be free from moisture,
oil and dust by conforming to the ISA
7.0.01 standard. (A dew point at least 18
degrees Fahrenheit below ambient
temperature, particle size below five
microns—one micron recommended—and
oil content not to exceed one part per
Operating Humidity 0 - 100% non-condensing
Acceptable Supply
Gasses
Air, sweet natural gas up to 5 bar, nitrogen
and CO2 are acceptable supply gasses.
Sour natural gas is not acceptable.
Air Consumption Single Acting Relay –
0.069 Nm³/h @ 1,5 bar
(0.041 SCFM @ 22 PSI)
0.082 Nm³/h @ 4,1 bar
(0.048 SCFM @ 60 PSI)
Double Acting Relay –
0.297 Nm³/h @ 1,5 bar
(0.175 SCFM @ 22 PSI)
0.637 Nm³/h @ 4,1 bar
(0.375 SCFM @ 60 PSI)
3.3 Pneumatic Output
Table 3: Pneumatic Output
Output Pressure
Range
0 to 100% of air supply pressure.
Output Air Capacity Single Acting Relay –
9.06 Nm³/h @ 1,5 bar
(5.33 SCFM @ 22 PSI)
20.8 Nm³/h @ 4,1 bar
(12.2 SCFM @ 60 PSI)
Double Acting Relay –
14.3 Nm³/h @ 1,5 bar
(8.44 SCFM @ 22 PSI)
30.6 Nm³/h @ 4,1 bar
(18.0 SCFM @ 60 PSI)
Primary Output Ports
(Port is pressurized in
energized state. Port
of power.)
Single Acting Relay – Port B
Double Acting Relay – Port A
3.4 Stroke Output
Table 4: Stroke Output
Feedback shaft
Rotation
Min 15°, Max 90°
40° recommended for linear applications.
3.5 Analog Output
Table 5: 4 to 20 mA Analog Output Specification
Potential Range of Rotation 40° to 95°
Power Supply Range 10.0 to 40 VDC, (24 VDC Typical)
Maximum Load Resistance
(ohms)
(Supply Voltage - 10.0) / 0.02
Current Signal Output 4-20 mA
Linearity 1.0% F.S.
Repeatability 0.25% F.S.
Hysteresis 1.0% F.S.
Operating Temperature -40 to 80°C (-40 to 176°F)
3.6 Safety Discrete Output
Table 6: Safety DO (Switch Function)
Power Supply Range 10.0 to 40 VDC, (24 VDC Typical)
Maximum Load Resistance
(ohms)
TBD
Current Signal Output TBD
Operating Temperature -40 to 80°C (-40 to 176°F)
3.7 Temperature
Table 7: Temperature
Operating
Temperature Range
-52°C* to 80°C (-61,6° to 176°F)
Range
-52°C* to 80°C (-61,6° to 176°F)
*Reduced performance at low temperatures.
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