Digital Inputs And Outputs - Kollmorgen AKD-P01206-NBEC-0000 Training Manual

Digital Inputs and Outputs

The Digital I/O connections are made on connectors X7 & X8. Once the connections are
properly made, they can be configured in WorkBench. Digital Inputs 1 & 2 both are high
speed inputs with update rates of 2µs. Digital Inputs 3 to 7 are standard programmable
inputs with update rates of 250 µs.
The function of the input can be programmed in WorkBench and selecting one of the
twenty-one available modes. Each input has a drop down box with the available mode.
All of the inputs can have Filters add, or the Polarity changed. Adding filters can be very
helpful when the input is from a mechanical switch that may bounce when closing or
opening.
Setting the filter to 0 – Off will allow all inputs to be
detected. The image to the right is a scope plot of
Digital Input 1 with filters off. The input is coming
from a snap action switch. The bounce of the
switch is clearly visible in the scope plot.
A bouncing input can trigger more than one move.
Adding a filter can insure the trigger will be
acknowledged only once.
The available filters are:
0 – Off (detects all inputs >40ns wide)
1 - 10µs (detects all inputs >10.24µs wide)
2 – 162µs (detects all inputs >163µs wide)
3 – 2.62ms (detects all inputs >2.62ms wide)
Polarity allows the input to be changed from Active High to Active Low. Polarity can be
changed in Workbench by clicking Polarity,
parameter is, DINx.INV, and will be set as follows.
0 – Input is Active High
1 – Input is Active Low
CAUTION: Changing the Polarity with the drive enabled can cause unexpected motion.
The mode selected will depend on
the application requirements.
Keep in mind End Of Travel limits
are, in most cases, Normally
Closed, and Home Switches are
Normally Open.
Digital Input with filters off.
, or by setting the parameter. The
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