ABB ACS 800 Series, Application Manual

Page: 17 / 44

Function blocks
17
Constant as a boolean input
How to set and connect the input
• Scroll to the input selection parameter of the block and switch to edit mode
(Enter).
• Select C in the inversion field (double arrow and arrow keys). The rest of the line
changes to a constant setting field.
• Give the constant. If boolean value true is needed, set the constant to -1. If
boolean value false is needed, set to 0.
• Accept by Enter.
String input
How to select the input
String input is needed only with the EVENT block.
For the input selection procedure, see the section Parameter value as an integer
input above. The bit selection field is not effective.
Note: The parameter selected as an input must have a string value. In the ACS800
Standard Application Program, there are parameters in group 85 USER
CONSTANTS which can be used for string inputs.