Specifications

Analog Output Modules
31007715 6/2008 327
STB ACO 1225 Functional Description
Functional
Characteristics
The STB ACO 1225 module is a two-channel analog output module that sends data
to two current field actuators. It does not support user-configurable operating
parameters or reflex actions.
Operating
Parameters
The current range of the module is 4 to 20 mA, with 10-bit resolution.
When communications are lost between the output module and the fieldbus master,
the module’s output channels go to a known state where they remain until
communications are restored. This is known as the channel’s fallback state. Both
output channels go to a predefined fallback state of 4 mA.
Note: At startup before the module becomes operational, the outputs are at 0 mA.
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