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System Description
WAGO-I/O-SYSTEM 750
750-880, 750-880/025-000 ETHERNET Programmable Fieldbus Controller
Manual
Version 1.0.1
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Example:
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Calculating the current consumption on an Example Coupler:
Internal current consumption
380 mA at 5 V
Residual current for bus modules
1620 mA at 5 V
Sum I
(5 V) total
2000
mA
at
5V
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The internal current consumption is indicated in the technical data for each bus
terminal. In order to determine the overall requirement, add together the values of
all bus modules in the node.
Note
Observe total current of I/O modules, re-feed the potential if required!
If the sum of the internal current consumption exceeds the residual current for bus
modules, then an internal system supply module (750-613) must be placed before
the module where the permissible residual current was exceeded.
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Example:
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Calculating the total current on the Example Coupler described above:
A node with the example coupler, which is described above, consists of:
20 relay modules (750-517) and 10 digital input modules (750-405).
Internal current consumption
20 * 90 mA = 1800 mA
10 * 2 mA = 20 mA
Sum
1820
mA
The example coupler can provide 1620 mA (see previous example) for the bus
modules. This value is given in the associated data sheet. Consequently, an
internal system supply module (750-613), e. g. in the middle of the node, should
be added.
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Note
Recommendation
You can configure with the WAGO ProServe
®
Software
smartDESIGNER
, the
assembly of a fieldbus node. You can test the configuration via the integrated
accuracy check.
The maximum input current of the 24 V system supply is 500 mA. The exact
electrical consumption (I(24 V)) can be determined with the following formulas: