Samson 3731-5, Mounting And Operating Instructions

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EB 8387-5 EN 21
Design and principle of operation
3.5 Technical data
Table 10: Type 3731-5 Positioner
Type 3731-5 Positioner with F
OUNDATION TM
fieldbus
Technical data in test certificates additionally apply to explosion-protected devices.
Rated travel Adjustable Direct attachment to Type 3277 Actuator: 3.6 to 30 mm
Attachment according to IEC 60534-6 (NAMUR): 3.6 to 200 mm
Rotary actuators (VDI/VDE 3845):
24 to 100° opening angle
Travel range Adjustable Within the initialized travel/angle of rotation
Travel can be restricted to
1 /
5
at the maximum.
Bus connection Fieldbus interface according to IEC 61158-2, bus powered
Physical Layer Class 113 (without explosion protection) · 111
(explosion-protected version)
Field unit according to FM 3610 entity and FISCO
Communi-
cation
Fieldbus Data transmission conforming to F
OUNDATION TM
fieldbus specification
Communication Profile Class: 31 PS, 32 L
Interoperability tested according to Interoperability Test Kit (ITK) 6.2.0
Execution times AO FB: 30 ms · DI FB: 20 ms · PID: 40 ms
Local SAMSON SSP interface and serial interface adapter
Software requirements (SSP): TROVIS-VIEW with database module 3731-5
Permissible operating voltage 9 to 32 V DC · Powered by bus line
The limits specified in the examination certificate additionally apply.
Maximum operating current 15 mA
Additional current in case of error 0 mA
Supply air
Type 3731-521, Type 3731-527: 1.4 to 7 bar (20 to 105 psi)
Type 3731-523: 1.4 to 6 bar (20 to 90 psi)
Air quality acc. to
ISO 8573-1
(2004 edition)
Max. particle size and density: Class 4 · Oil content: Class 3
Moisture and water: Class 3
Pressure dew point: at least 10 K below the lowest ambient temperature to be
expected
Signal pressure (output) 0 bar up to supply pressure
Characteristic Linear/Equal percentage/Reverse equal percentage
Butterfly valve, rotary plug valve or segmented ball valve: Linear/equal
percentage
User-defined: adjustable over operating software
Deviation ≤1 %
Hysteresis ≤0.3 %
Sensitivity ≤0.1 %
Transit time Up to 240 s separately adjustable for exhaust and supply air by software