Baldor Flex+DriveII, Operating Manual

Page: 21 / 42

Basic Demonstrations 4-7
MN1917
Individual actions can be enabled by clicking the appropriate check box in the enable column. When the PLC Task is
activated, only those actions that have been enabled will be evaluated.
An individual action can be disabled even while the PLC Task is running. To disable an action that is not required,
clear the action’s Enable check box and click
Apply .
4.4.1 Testing the PLC Task
Actions are triggered as a result of the logical evaluation of one or two conditions, called Condition 1 and Condition
2. If the result of this logical comparison is true, the action is triggered. If Condition 2 is not required it can be left as
False.
In this demonstration digital inputs will be used to trigger preset moves, as described in section 4.3.1. The PLC Task
will monitor the state of the motor and digital inputs 4, 5 and 6.
1. Confirm that the control panel input switches 0-7 are in the off (up) position.
2. Confirm that the Enable PLC Task option at the top of
the screen is checked to allow the PLC Task to run.
3. Operate input switch 4. When it is in the on position, output LED 0 is illuminated.
This action is controlled by the first row in the PLC Task table. The PLC condition “If User Input 4” has become
true, so the corresponding PLC action “User Output 0” has been performed.
Input switch 5 works in the same way, controlling output LED 1.
4. Set input switches 4 and 5 to the on position. When they are both on, the drive is enabled.
This action is controlled by the fifth row of the PLC Task table. The PLC condition “If User Input 4 AND User Input
5” has become true, so the corresponding PLC action “Drive Enable” has been performed.
4.4.2 Using Presets and the PLC Task simultaneously
In these demonstrations, Presets mode and PLC Task mode have been setup to use different ranges of digital
inputs. Presets mode will still be active (provided its Enable button is pressed), so even while PLC Task mode is
being displayed, presets can still be selected and triggered using digital inputs 0, 1, 2, 3 and 7.
5. Setup preset move 3, by setting input switches 0 and 1 to the on position.
6. Trigger preset move 3 by setting input switch 7 to the on position.
While the motor is moving, output LED 2 is turned off. When the motor becomes idle, output LED 2 is illuminated.
This is controlled by the third row in the PLC Task table.
If input switch 6 is set, the drive becomes disabled. This is controlled by the twelfth row in the PLC Task table.
Actions are tested in the order they appear in the table, so the Disable action overrides the Enable drive action.