Monitoring and Error Responses

General

Device: PacDrive LMC x00C controller

The system monitors the following variables:

Supply voltage
Battery voltage
Internal voltages
Temperature

The system carries out certain responses depending on the variable being monitored, the severity of the error, and the availability of a UPS in the PLC configuration.

Immediate Shutdown

This group handles unrecoverable errors. When these errors appear, the controller shuts down immediately to prevent possible damage to the hardware.

Causes of immediate shutdown

Cause	Figure	Abbreviation in tables and figures
Supply voltage too high	Figure 1 Figure 2	MAX
Battery voltage too high	Figure 3 Figure 4	MAX
Internal voltage too high	Figure 5	MAX
Temperature too high (second upper temperature limit)	Figure 6 Figure 7	MAX
Internal voltage too low	Figure 5	MIN
Temperature too low (second lower temperature limit)	Figure 6 Figure 7	MIN

Delayed Shutdown

The errors described here are less critical than the errors in the "Immediate Shutdown" group. Therefore, the program has a response time of 70 s available before switching off in order to end the program in a coordinated manner or to move the axes to a defined safe position. The response time is specified via the parameter Delay.

This error response can be interrupted by an error from the “Immediate Shutdown” group, meaning that the PacDrive Controller would shutdown before the response time has expired (70 s or parameter Delay).

Causes of delayed shutdown

Cause	Figure	Abbreviation in tables and figures
Temperature too high (first upper temperature limit)	Figure 6	SHUTD

NOTE: If no UPS is configured, shutdown occurs after one second in accordance with the "Immediate Shutdown" group.

Shutdown Dependent on Error Duration

This error response occurs when the supply voltage is too low. Here, it is essential that this error reaction does not occur immediately, but after a defined error duration that is set in the parameter Delay. The system shuts down after the Delay but buffers the supply voltage first using the battery.

Causes of shutdown dependent on error duration

Cause	Figure	Abbreviation in tables and figures
Supply voltage too low	Figure 1	VINSHUTD

NOTE: If no UPS is configured, shutdown occurs after one second in accordance with the "Immediate Shutdown" group.

ALERT

Errors in this group only trigger an alert. Depending on the type of error, the alert is triggered as a diagnostic through the Logic Builder message logger and as output on the display.

Causes of "Alert" error group

Cause	Figure	Abbreviation in tables and figures	Diagnostic message output
Battery not available or battery voltage too low	Figure 3	ALERT	Message Logger
Temperature too low (first lower temperature limit)	Figure 6	ALERT	Message Logger Display

NOTE: The function is possible only with a configured UPS.

Overview of Error Responses

The following table provides an overview of the individual error responses sorted by monitored variable and configured UPS.

Overview of error responses

With configured UPS	Without configured UPS
Figure 1	Figure 2
Figure 3	Figure 4
Figure 5
Figure 6	Figure 7