Flowserve 400MD Logix - Manual (Page 18)

Temperature Limits
Table 4.1 lists the operating temperature limits for Logix 3400MD digital positioner.
Table 4.1 Operating Temperature Limits
Ambient Temperature
For Intrinsically Safe
Applications
Electronics Ratings for
Explosion-proof Ap-
plications
Mechnical Rating
°C °F °C °F °C °F
Logix 3400MD digital positioner -52 to 60 -61 to 140 -52 to 85 -40 to 131 -40 to 80 -40 to 176
Power Requirements
The Logix 3400MD 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 3400MD digital positioner.
Table 4.2 Logix 3400MD Power Requirements
Static Power
Minimum Maximum
10 VDC @ 23mA 32 VDC @ 23mA
Air Supply Requirements
The Logix 3400MD 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 or pro diagnostics (Logix 341X or 342X 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.
5 Logix 3400MD Digital Positioner Installation
5.1 Introduction
This section provides information about the mechanical and electrical installation of the Logix 3400MD digital positioner. It includes procedures for mount-
ing, piping and wiring the Logix 3400MD digital positioner for operation. Refer to Logix 3400MD Digital Positioner IOM in for detailed information.
5.2 Mounting Variations
The Logix 3400MD digital positioner can be mounted to a:
• Valtek control valve
• Other manufacturer’s control valve
NOTE: Figure 5.1 through Figure 5.4 show typical installations for comparison
Logix 3400MD Digital Positioner LGENIM3405-02 11/13
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