MTS Series 793 - Manual (Page 93)

Channel Limited Channel Control Mode
The Channel Limited Channel (CLC) control mode is typically used for specimen installation and removal.
When you command the actuator with a CLC control mode, the controller does not allow the actuator to
exceed limits specified on either the active or limiting channels.
For example, assume the limiting channel is force. When setting up for a test, you could set a force limit to
a low value to prevent damage if the grips accidentally touch each other. If the force limit is reached, the
limiting channel prevents further actuator motion regardless of the displacement command.
The CLC control mode requires two feedback signals:
• The “Active Channel” (typically displacement) is assigned when you select a resource for Active Fdbk.
• The “Limiting Channel” (typically force) is assigned when you select a resource for the Limit Input.
How to Create a Channel Limited Channel (CLC) Control Mode
1. Optional - if you want to use station input resources to create this control mode, you must create them
before proceeding.
2. In the Station Builder navigation pane, select the channel that requires a CLC mode.
3. Click the Control Modes tab, and then select a resource for the active feedback (Active fdbk) by performing
one of the following:
• Click the Station tab of the Input Resources list, select a station input (from the current channel or
Auxiliary Inputs), and click “+”, or
• Click the Hardware tab of the Input Resources list, select a hardware resource input for the control
mode, and click “+”.
Note:
Keep your resource names short because long names may not be visible in all windows.
4. Enter the desired display and internal name for the control mode.
5. In the Type list, select Channel Limited Channel.
6. Enter the desired display and internal names for the Active fdbk input, then select the desired Dimension
and Display Units.
7. Select a resource for the limiting feedback input (Limit Input) by performing one of the following:
• Click the Station tab of the Input Resources list, select a station input (from the current channel or
Auxiliary Inputs), and click “+”, or
• Click the Hardware tab of the Input Resources list, select a hardware resource input for the control
mode, and click “+”.
8. Enter the desired display and internal names for the Limit Input, and then select the desired Dimension
and Display Units.
MTS Series 793 Control Software 93
Station Builder