This function is useful for fault-checking new tools. Once you have configured the controller for the new tool (i.e.: set the number of cavities and manifolds) the diagnostics function can be used to check that the new tool is wired correctly.
The diagnostics function will determine the following tool characteristics:
The diagnostics function proceeds automatically without user intervention. However, some simple checks are carried out first to make sure that the results will be accurate.
Diagnostics will not proceed unless the following conditions are met, these being checked automatically by the controller before diagnostics begins:
Once diagnostics begins, the user is informed of the progress in the zone information box, as well as the status-bar:
This image shows that zone 1 has been tested already, that it is wired correctly (->1), that the thermocouple is ok ("Up") and that it took 25 seconds to change temperature by at least 6 degrees celsius. Zone 2 is currently being tested.
For manifolds, a 6 degree change is expected within 240 seconds. The manifold being tested is energised at 60% power.
This image shows a problem with zones 4, 5 and 9.
Zones 4 and 5 are cross-wired (the thermocouples or heaters are connected in reversed order).
Zone 9 failed to respond, so 60% power was applied to this zone for 240 seconds and no thermocouple changed by 6 degrees celsius. It could be a "cold thermocouple", or perhaps the thermocouple is not seated correctly.
Once all zones have been tested, diagnostics is ended and the user has the option of saving the results in a text file stored on the controller. This file can later be viewed on the controller, or exported and viewed on a PC.