Type

AD

Devices supporting the parameter

Uninterruptible power supply

Traceable

Yes

Watching active / 1

DINT

There are no errors. The UPS monitors the relevant limits.

Diagnostic message: 8031 "UPS Power Supply OK"

Ext. diagnostic: State = 1

UPS failure / 2

DINT

There is a battery error. Either there is no battery at all or the battery output voltage is too low to protect against a possible supply voltage outage.

Diag. Code: 8338 "UPS Battery not charged"

Ext. diagnostic: State = 2

Diag. Code: 8324 "UPS error detected"

Ext. Diagnostic: battery fail

UPS active / 3

DINT

The UPS is active, meaning that the external supply voltage has failed or fallen below the 18 V limit. Therefore, the controller is being temporarily powered by the battery. The duration of the supply voltage outage is still in the permitted range (t < Delay).

When the supply voltage again reaches a value above 18 V in this state, there will be a change in state to "Watching active / 1". If the battery voltage falls below the 9 V limit, there is an immediate change to state system "Shutdown / 4".

Diag. Code: 8030 "USP aktive - no power"

Ext. diagnostic: State = 3

When changing to the State, an event for the ControlTask is triggered.

System shutdown / 4

DINT

There may be multiple causes for this change of state:

oThe duration of the supply voltage outage is longer than the time configured in the UPS.Delay parameter (t > Delay).

oThe battery voltage and the supply voltage are below their permitted limits.

oThe 60 s after detection of the temperature error have elapsed.

The system is stopped and shut down. The following activities are performed:

oAll tasks are stopped.

Diag. Code: 8034 "UPS Program tasks terminated"

Ext. diagnostic:

oDelete profile data

oReset the field buses

oClose all open files

oRelease the file system

oShut down Windows or switch off controller

Diag. Code: 8035 "UPS active - system shutdown started"

Ext. diagnostic: State = 4

NOTE: There is no reason to use IEC to query the State parameter in "System shutdown / 4" since the tasks are the first to be terminated when the shutdown sequence starts. Instead, the Monitoring Task Concept (Control Task) is expanded to include the UPS shutdown.When changing to the State, an event for the ControlTask is triggered.

hardware defect / 5

DINT

There is an error. The read monitoring values are invalid. That correct function of the UPS can no longer be guaranteed.

Diag.Code: 8324 “UPS error detected”

Ext.diagnostic: State = 5 (“PIC fail”)

temperature too high / 6

DINT

The system has detected a temperature that is too high and will change the state to “System Shutdown/4” after the response time has expired.

Diag. Code: 8339 “UPS active system temperature too high”

Ext.diagnostic: State = 6

When changing to the State, an event for the ControlTask is triggered

IEC-control task active / 7

DINT

UPS switches into this state when UPS shutdown is delayed by the control task.