After sending an Open / Close command, running time monitoring for the switchgear unit is started.

The P632 expects that the switchgear unit has reached its intermediate position within a period of time that can be configured via DEV01: StartCmdTime superv. (for DEV01, respective setting parameters exist for the other DEVxx). If the switchgear unit has not reached its intermediate position after this time has elapsed then the command is deactivated and an exceeded timer is flagged by the signal MAIN: Startcmdtime exceed.. In case of a switchgear unit for which it is (almost) impossible to detect the intermediate position it is recommended to switch off this monitoring by setting the parameter to Blocked.

Moreover, the P632 expects a status signal – “Open” or “Closed” to be issued by the switchgear unit within the duration of running time monitoring. The status signal for the position of the contacts on the switchgear unit is present at appropriately configured binary inputs on the P632, which can be set to debouncing and chatter suppression mode (see Chapter “Debouncing and Chatter Suppression”). For the duration of running time monitoring or until the contacts on the switchgear unit are back to a defined position – either “Open” or “Closed” – the signal “Intermediate position” is issued.

If DEV01: Interm. pos. suppr. is set to Yes, the previous switchgear unit status will continue to be signaled while the switchgear unit is operating. Once the contacts on the switchgear unit have reached their new position, the updated status is signaled.

If the contacts on the switchgear unit have not reached either their “Open” or “Closed” position after the set time period for running time monitoring has elapsed the signal Faulty position is issued. If DEV01: Stat.ind.interm.pos. is set to Yes, a delay time of 5 s is started. Once this time period has elapsed and there is no status signal for the position, the state actually present at the binary inputs will be signaled.

If the operating mode without external termination contacts was selected (MAIN: W. ext. cmd. termin.. is set to No) the switching command is terminated after the set latching time has elapsed, when either the ‘Open’ or ‘Closed’ position status signal is received or the set time period for running time monitoring has elapsed (see Fig. 3-189).

If the operating mode with external termination contacts was selected (MAIN: W. ext. cmd. termin.. is set to Yes) the switching command is terminated, after the set latching time has elapsed, when a termination command is issued while the set time period for running time monitoring is active.