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SIMATIC S7-300 / S7-300F

BERO Vs NAMUR

Thread Starter: sunn7   Started: 5/15/2012 11:50 AM   Replies: 2

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  5/15/2012, 11:50 AM
sunn7
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Hi all

I was in selecting of NAMUR card and came through BERO suitable cards in S7-300 Modules.

1. what is this BERO? Is it same NAMUR?

2. A BERO card will work for NAMUR contacts?


Rgds
Sunn7

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  5/15/2012, 11:56 PM
H-H
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Hello sunn7,

For the first question, Please read the 2 attached documents and look at simplified diagram for NAMUR switches/sensors in this link.For sure 5 mins with Google will give you better info.
For the second question, The answer is no.
The BERO card needs voltage to sense 1 state while the NAMUR card needs current to sense the 1 state.

Input voltage
Type of input voltageDC
Rated value, DC24 V
for signal "0"-30 to +5 V
for signal "1"13 to 30 V
Input current
for signal "1", typ.7 mA



NAMUR card  6ES7321-7RD00-0AB0
Input voltage
Rated value, DC8.2 V; from internal power circuit supply
Input current
on wire break, max.0.1 mA
on short -circuit, max.8.5 mA
for NAMUR encoders
for signal "0"0.35 to 1.2 mA
for signal "1"2.1 to 7 mA

Best regards,

H-H

Attachment: Bero_NAMUR.zip  (54 Downloads)
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Thank you for this post from:
fritz, dchartier, sunn7
  5/16/2012, 7:03 PM
gre_m
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According to my information sold to Siemens BERO-production of sensors
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