Flowserve 3400IQ Digital Positioner - Manual (Page 24)

Logix 3400IQ Digital Positioner FCD LGENIM3402-00 – 0/07
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Figure 4.1 illustrates typical mounting area considerations to make before installing Logix 3400IQ
digital positioner.
Figure 4.1 Typical Mounting Area Considerations Prior to Installation
Temperature Limits
Table 4.1 lists the operating temperature limits for Logix 3400IQ digital positioner.
Power Requirements
The Logix 3400IQ digital positioner is a bus-powered (two-wire) device, meaning that it receives its
power from the VDC on a fieldbus wiring segment. Certain guidelines and limitations exists regarding
the wiring of fieldbus devices. See Section 5.4 for more information on wiring the device.
Table 4.2 lists the operating power requirements for the Logix 3400IQ digital positioner.
Table 4.2 Logix 3400IQ Power Requirements
Static Power
Minimum Maximum
9 VDC @ 23mA 32 VDC @ 23mA
Air Supply Requirements
The Logix 3400IQ digital positioner requires an external air filter (preferably the Valtek coalescing
air filter).
The air supply should conform to ISA Standard S7.3 (with a dew point at least 18 °F (10°C) below
ambient temperature, particle size below one micron, and oil content not to exceed one part per
million). For a model with advanced diagnostics (Logix 341X digital positioner), the internal pressure
sensors are rated for continuous operation up to 150 psig.
Minimum supply pressure for proper operation is 30 psig.
Use of a regulator is highly recommended as it aids in the use of the diagnostics feature.
Table 4.1 Operating Temperature Limits
Ambient Temperature
For Intrinsically Safe
Applications
Electronics Ratings
for Explosion-proof
Applications
Mechnical Rating
°C °F °C °F °C °F
Logix 3400IQ digital positioner -4 to 60 -20 to 140 -40 to 55 -40 to 131 -40 to 80 -40 to 176