Rockwell-automation T80004 Application Note Field Loop Configuration Manual de usuario descargar pdf (Pagina 44)

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AN-T80004 Field Loop Configuration

Issue 10 Jun 13 AN-T80004 44

Analogue or Digital Input module to VFTA

The T8842 VFTA has five power supply plugs. Each plug powers one ‘power group’ of eight channels

(see page 27). For field devices that require only milliamps to drive the loop current, only one dual 3A

supply is needed and the plugs should be linked together. For field devices that require more current,

each plug may be wired from a dual 3A supply. If 3A is not enough for eight channels, fit separate 24V

and 0V fused terminals for each channel. The diagram below shows only one 3A dual supply for low

current devices, with wire links between the terminals.

VFTA

TBFP1

Module

24V A

24V B

TBFP4

TBFP3

TBFP5

TBFP2

To Screen Earth

To Safety Earth

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Rockwell-automation T80004 Application Note Field Loop Configuration Manual de usuario Pagina 44