Siemens SINAMICS G120 Operating Instructions Manual page 227

Table 8- 37
Parameter
p1210
p1211
p1212
SINAMICS G120C Inverter
Operating Instructions, 01/2011, FW 4.4, A5E02999804A AB
Setting the automatic restart
Explanation
Automatic restart mode (factory setting: 0)
0: Disable automatic restart
1: Acknowledge all faults without restarting
4: Restart after power failure without further restart attempts
6: Restart after fault with further restart attempts
14: Restart after power failure after manual fault acknowledgement
16: Restart after fault after manual fault acknowledgement
26: Acknowledgement of all faults and restart with ON command
Automatic restart start attempts (factory setting: 3)
This parameter is only effective for the settings p1210 = 4, 6, 14, 16, 26.
You define the maximum number of start attempts using p1211. After each successful
fault acknowledgement, the inverter decrements its internal counter of start attempts by
1.
For p1211 = n, up to n + 1 start attempts are made. Fault F07320 is output after n + 1
unsuccessful start attempts.
The inverter sets the start attempt counter back again to the value of p1211, if one of
the following conditions is fulfilled:
After a successful start attempt, the time in p1213[1] has expired.
•
After fault F07320, withdraw the ON command and acknowledge the fault.
•
You change the start value p1211 or the mode p1210.
•
Automatic restart wait time start attempt (factory setting: 1.0 s)
This parameter is only effective for the settings p1210 = 4, 6, 26.
Examples for setting this parameter:
1. After a power failure, a certain time must elapse before the motor can be switched-
on, e.g. because other machine components are not immediately ready. In this case,
set p1212 longer than the time, after which all of the fault causes have been
removed.
2. In operation, the inverter develops a fault condition. The lower you select p1212,
then the sooner the inverter attempts to switch-on the motor again.
8.9 Application-specific functions
Functions
225