MTS Series 311 Load Frame - Manual (Page 84)

Load Unit Addendum 84 Addendum
During normal setup operation, the operator would follow this sequence:
1. Switch the system to the CLC manual control mode.
2. Activate the handset control.
3. Switch to velocity limiting mode on the load frame control panel.
4. Specimen setup or removal could then take place.
To resume to normal test mode, the operator would reverse the sequence:
1. Switch to full flow mode.
2. Deselect handset control.
3. Put the system into the control mode desired for the start of the test.
Run mode
The system is fully operational when all of the following have been satisfied.
• Actuator velocity limiting is in full-flow state.
• The handset and manual control are yielded to the controller.
• The system is in high pressure.
Service
Most normal service requirements can be met utilizing the normal three operating
modes as listed previously. However, there can be circumstances where operation
in full flow mode with the Test Area Enclosure open is required. In these cases,
trained service personnel can disconnect the standard enclosure cable, and
temporarily replace it with a service connector. This operation is not considered
typical use, and should only be used by trained individuals.
Optional interlock
logic
In addition to the actuator velocity limiting switch, some systems can include
interlock switches on a Test Area Guard or interlock switch(es) on environmental
products (such as a door interlock switch on an environmental chamber). Refer to
the wiring assembly harness in the Load Unit/Load Frame section and the wiring
diagram for other interlock switches for specific information.