4
®
User Instructions Logix 520MD - LGENIM0520-01 11/09
4 SPECIFICATIONS
Table 1: Input Signal
Input Signal Range 4 - 20 mA (HART)
Compliance Voltage 10 VDC
Voltage Supply (maximum) 30 VDC
Minimum Required Operating
Current
3,6 mA without AO
3,83 mA with AO
Table 2: Stroke Output
Feedback Shaft Rotation Min. 15°, max 90°
40° recommended for linear
applications
Table 3: Air Supply
Air Supply 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 to 87 psi)
Air Consumption (steady state)
0,08 Nm³/h @ 1,5 bar
(0,047 SCFM @ 22 psi)
0,12 Nm³/h @ 6,0 bar
(0,071 SCFM @ 87 psi)
Table 4: Output Signal
Output Pressure Range 0 to 100% of air supply pressure
Output Flow Capacity 2,4 Nm³/h @ 1,5 bar
(1,41 SCFM @ 22 psi)
7,0 Nm³/h @ 6,0 bar
(4,12 SCFM @ 87 psi)
Table 5: Shipping Weights
Base Positioner without
Accessories
1,2 kg (2,65 lbs)
Table 7: Environmental Conditions
Operating Temperature -40 °C to +80 °C
(-40 °F to +178 °F)
Transport and Storage
Temperature
-40 °C to +80 °C
(-40 °F to +178 °F)
Operating Humidity 0 to 100% non-condensing
Table 6: Performance Characteristics (typical)
Linearity < +/- 1,0%
Resolution < 0,1%
Repeatability < 0,2%
Deadband < 0,2%
Table 9: Limit Switches (optional)
Type P&F SJ2-S1N
Load current < 1 mA < 3 mA
Voltage range 5 - 25 VDC
Hysteresis 0,2 %
Temperature -25
°C to
100
°C (
-13
°F to
212
°F)
Type P&F SJ2-SN
Load current < 1 mA < 3 mA
Voltage range 5 - 25 VDC
Hysteresis 0,2 %
Temperature -40
°C to
100
°C (
-40
°F to
212
°F)
Type P&F SJ2-N
Load current < 1 mA < 3 mA
Voltage range 5 - 25 VDC
Hysteresis 0,2 %
Temperature -25
°C to
100
°C (
-13
°F to
212
°F)
3 LOGIX 520MD OVERVIEW
The Logix 520MD is a two-wire, 4-20 mA input digital valve
positioner with HART communication. The Logix 520MD
positioner controls single-acting actuators with linear
and rotary mountings. The Logix 520MD 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 required to lower the pressure to the actuator’s
maximum rating (not to be confused with operating range).
A coalescing air filter is recommended for all applications
Table 8: Hazardous Area Specifications
ATEX II 1 G Ex ia IIC T5 - T6
II 3 G Ex ic IIC T5 - T6
FM
Class I, Division 2, Groups A,B,C,D Temp. Class. T4 Ta = 85°C
Class I Zone = Group IIC T4 Ta = 85°C
Class I, Division 2, Groups A,B,C,D Temp. Class. T4 Ta = 85°C
CSA Class I Division 1, Groups A,B,C,D
Class I Division 2, Groups A,B,C,D
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