Specifications

Bases
398
31007715 6/2008
The Field Power
Distribution
Contacts
The five contacts located in a column at the bottom of the STB XBA 2000 base
provide AC or DC field power and a protective earth (PE) connections to the I/O
module. They are as follows:
Field power (sensor power for inputs and actuator power for outputs) is distributed
across the island bus to the STB PDT 2100 PDM:
If the module in the STB XBA 2000 base supports only input channels, contacts 3
and 4 are not used. If the module in the STB XBA 1000 base supports only output
channels, contacts 1 and 2 are not used.
Contacts Signals
1 and 2 when the module inserted in the base has input channels, contacts 1 and 2
deliver sensor bus power to the module
3 and 4 when the module inserted in the base has output channels, contacts 3 and 4
deliver actuator bus power to the module
5 PE is established via a captive screw on the PDM base units (see p. 403) and is
delivered to the Advantys STB I/O module via contact 5
1
2
3
4
5
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