Polarity
The digital input is a bi-directional input. The wiring to the input and common terminals may be changed around without affecting its
operation.
Each group of digital inputs (that is, each group of digital inputs that share a common terminal) must share the same reference
polarity (high or low). However, different groups of digital input terminals can have different reference polarities.
In general, the controller activates the associated digital input function for a HIGH digital input. However, for the
Emergency stop
safety function, the controller activates the digital input function for a LOW digital input.
Configuration
All digital inputs are configurable. A controller can have a number of digital inputs.
For each digital input, you can assign digital input function(s) and/or configure an alarm.
You can also create responses to digital inputs using CustomLogic. You can also activate some digital input functions using a
Modbus command.
Controller types and single-line diagram
The controller type determines which digital input functions are available.
To see certain digital input functions, you must include the corresponding equipment in the single-line diagram.
Controller operation
Some of the digital input functions are only applicable in certain controller modes. If the controller is in another mode, it ignores the
digital input.
13.2.5 Analogue input characteristics and configuration
Symbol
Hardware modules
GAM3.1 (current or voltage inputs)
EIM3.1 (current or resistance inputs)
The controller can use an analogue input to receive operating data. The controller can also activate alarms based on the analogue
input.
Analogue input function
Assigning a function to the analogue input is optional.
You can assign one (or more) of the controller's analogue input functions to the input. You can only select functions that use the
same units.
Alternatively, if you want to use the analogue input as a supervised binary input, you can assign one (or more) of the controller's
digital input functions to the input.
Analogue input sensor setup
The sensor setup is required.
The sensor setup requires a curve. The curve allows the controller to convert the analogue input to the selected function's value.
You can select a previously customised curve, select a pre-configured curve, or customise a curve.
More information
See the
Appendix: Pre-configured curves
for the curve details.
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