Product Description XI/ON - Eaton Automation

XI/ON: Gateways for Modbus TCP 7 Guidelines for Station Planning
7.2 Power Supply
7.2.1 Module Bus Refreshing
The number of XI/ON modules that can be supplied by the gateway
or a separate Bus Refreshing module via the internal module bus
depends on the respective nominal current consumption of the individual
modules on the module bus.
Attention
The sum total of the nominal current consumption of the connected
XI/ON modules must not exceed 1.5 A.
The following examples show the calculation for the required
number of Bus Refreshing modules:
Example 1:
The XI/ON station consists of 20 XN-1AI-I(0/4...20MA) modules. The
number of additional Bus Refreshing modules required is calculated
as follows:
Gateway 430 mA
20 XN-1AI-I(0/4...20MA) 20 x 41 mA 820 mA
Total: 1250 mA
Maximum permissible current via module bus: 1 500 mA
The calculation shows that no further Bus Refreshing module is
required.
152 M001973-01, 07/2007