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Overview
2
Overview
2.1
Module structure
A module consists of
}
Electronic module and
}
Base module with
–
–
The base modules are the carrier units for the electronic modules and are used to connect
the field wiring. The electronic modules are inserted on to the base modules and determine
the module's function.
Details of the base modules that can be used are available in the chapter entitled "Intended
Use".
2.2
Module features
The product has the following features:
}
4 digital inputs
}
2 test pulse outputs, with the option to configure them as:
–
–
}
LEDs for:
–
–
}
For failsafe applications in system environment A and B
}
T-type:
PSSu E F 4DI-T: for increased environmental requirements
}
R-type:
PSSu E F 4DI-R: for railway applications
Operating Manual PSSu E F 4DI(-T)(-R),
21310-EN-08
Screw terminals or
Cage clamp terminals
Independent test pulse outputs that use different test pulses (periphery supply)
Outputs with constant voltage (periphery supply)
Switch status of each input
Module error
7
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