Functions, monitoring, and protective functions
9.3 Drive functions
Drive converter cabinet units
320
Operating Instructions, 07/07, A5E00288214A
The startup attempt has been completed successfully once the flying restart and
magnetization of the motor (induction motor) has been completed (r0056.4 = 1) and one
additional second has expired. The startup counter is not reset to the initial value p1211 until
this point.
If additional faults occur between successful acknowledgement and the end of the startup
attempt, then the startup counter, when it is acknowledged, is also decremented.
Monitoring time power restoration (p1213)
The monitoring time starts when the faults are detected. If the automatic acknowledgements
are not successful, the monitoring time will continue. If the drive has not successfully
restarted by the time the monitoring time expires (flying restart and motor magnetization
must have been completed: r0056.4 = 1), fault F07320 is output. Monitoring is deactivated
by setting p1213 = 0.
If p1213 is set to a value lower than the sum of p1212, the magnetization time r0346 and the
additional delay time due to flying restart, then fault F07320 will be generated on every
restart attempt. If, for p1210 = 1, the time in p1213 is set to a value lower than p1212, then
fault F07320 will also be generated on every restart attempt. The monitoring time must be
extended if the faults that occur cannot be immediately and successfully acknowledged (e.g.,
when faults are permanently present).
Parameters
•
p1210
Automatic restart mode
•
p1211
Automatic restart, start attempts
•
p1212
Automatic restart, delay time start attempts
•
p1213
Automatic restart, monitoring line supply return
Settings
To prevent the motor from switching to phase opposition when the drive is being restarted,
there is a delay while the motor demagnetizes (t = 2.3 x motor magnetization time constant).
Once this time has elapsed, the inverter is enabled and the motor is supplied with power.
