Siemens 420 manual 128

3 Functions Issue 07/04

The number of start attempts is specified using parameter P1211. The number is internally decremented after each unsuccessful attempt. After all attempts have been made (as specified in parameter P1211), automatic restart is cancelled with message F0035. After a successful start attempt, the counter is again reset to the initial value.

NOTE

The "Flying restart" function (refer to Section 3.16) must be additionally activated if, for an automatic restart, the drive inverter is to be connected to a motor which may already be spinning.

DANGER

For longer line supply failures (blackouts)and when the automatic restart function is activated, over a longer period of time it may be assumed that MICROMASTER is powered-down. However, when the line supply returns, motors can automatically start to run again without any operator intervention.

If the operating range of the motors is entered in this status, this can result in death, severe injury or material damage.

MICROMASTER 420	Operating Instructions
128	6SE6400-5AA00-0BP0