Siemens ET 757 E Series Instruções de Operação descarregar pdf (Página 37)

ET 200pro FC

Operating Instructions, 11/2007, A5E01100763B AA

Installation

4.1 Prerequisites and maximum expansion

Maximum mechanical expansion

The maximum expansion of an ET 200pro is reached when one of the rules outlined below

applies:

Table 4-1 Maximum mechanical expansion

Features Rule

Number of modules max. 16 electronic modules

Width of ET 200pro max. 1 m mounting width (without rack)

Number of frequency converters maximum 5

Maximum electrical expansion

● Electronic / encoder supply 1L+:

– Powers the internal electronics of the frequency converters

– Electrically isolated to the backplane bus of ET 200pro, to 2L+ and to

PROFIBUS DP/PROFINET IO

● Load voltage supply 2L+:

– Powers the safe inputs and outputs when a safety-orientated frequency converter is

used

– Electrically isolated to the backplane bus, to 1L+ and to PROFIBUS DP/

PROFINET IO

Table 4-2 Maximum electrical expansion

Features Rule

Electronic/encoder supply 1L+ max. 5 A per ET 200pro station; a frequency converter

requires 0.8 A

Load voltage supply 2L+ max. 10 A

per ET 200pro station

The load caused by the frequency converter is negligible

There is no electrical limit for a station that has been expanded with a maximum of 5

frequency converters.

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Siemens ET 757 E Series Instruções de Operação Página 37