Flowserve 400MD Logix - Manual (Page 14)

Table 2.1 Components Required for Logix 3400MD Digital Positioner Installation
Components Description
Logix3400MDDigitalPositioner Fieldbus positioner.
Power supply Furnishes DC power to fieldbus devices.
Power conditioner
Acts as a filter to prevent the power supply from interfering with the fieldbus signaling. (May be part
of a fieldbus power supply.)
Fieldbus cable Twisted pair shielded wire used to interconnect fieldbus devices.
Fieldbus terminators
Fieldbus IS Barriers (For hazardous area installations)
A signal termination device used to prevent reflected signals (noise) from distorting fieldbus
communications.
Intrinsic safety wire barriers are required for hazardous location installations.
Fieldbus wiring blocks
Wiring blocks allowing easy connection of devices, cable, terminators, surge suppressors and other
fieldbus network components.
Operator Interface
In the control room an operator station, a personal computer or host computer acts as the operator interface to the fieldbus network. Using
supervisory control software applications, the field devices on a fieldbus network can be monitored and controlled at the operator interface.
Figure 2.1 shows how these components go together to operate on a fieldbus network.
Figure 2.1 Fieldbus Network Components
2.3 Installation / Operation Tasks
Installation of the Logix 3400MD digital positioner is not difficult. The tasks for installing and operating the Logix 3400MD digital positioner
are outlined in Table 2.2.
Power
Supply
PC
T
T
Operator Station or
Host Computer
Fieldbus Cable
Fieldbus Device
T = Terminator
PC = Power Conditioner
Logix 3400MD Digital Positioner LGENIM3405-02 11/13
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