KEB COMBIVERT F5-A, Applications Manual, Page: 391 / 552

Protective functions
© KEB, 2012-10 COMBIVERT F5-A, -E, -H Page 7.13 - 17
7
Pn.58: Quick stop mode
Bit Meaning Value Explanation
2
Abnormal stop-
ping via control
word (Sy.50)
0:Sy.50 modulation off
Shutoff of the modulation after reaching of speed 0 due
to abnormal stopping
4: Sy.50 modulation on Fast stop with holding torque on reaching speed 0
3
Status bit at
standstill
0: Status bit on
The status bit "abnormal stopping" remains active until
leaving the function
8: Status bit off
The status bit "abnormal stopping" is reset when the
drive has reached standstill
7.13.3 Automatic restart
With the automatic restart, the inverter error automatically resets or automatically terminates the abnormal
stopping caused by a malfunction or pre-warning.
The function can be activated separately for the various errors and malfunctions with the Pn-parameters.
The automatic restart only makes sense if the error can be expected based on the application. Normally, the
cause of the error must first be investigated and eliminated before the drive can be put back in operation by
executing the reset.
Therefore, it must be selected after which errors an automatic restart should be executed
Because of the independent starting of the machine safety measures must
be provided for operating personnel and machine!
7.13.3.1 Undervoltage error (E.UP)
In Pn.00 "automatic restart E.UP", the automatic restart for the undervoltage error is activated in the factory
setting.
A typical application for the automatic restart E.UP (Pn.00) is operation on a bad power grid where sporadic
brownouts are to be expected. With this function, the application continues running as soon as the mains vol-
tage is sufficiently high again.
For the undervoltage error, a time can be defined within which the automatic restart is permissible.
Pn.76: Max. E.UP warning time
Value Explanation
0: off
If the function automatic restart is activated, it is always executed after the undervoltage
error (independent of the length of time the error was present). The error bit in status word
SY.44 or SY.51 is set as long as the inverter is in state E.UP.
0.01...32.00 s
After expiration of this time, no automatic restart is executed anymore. During this time,
the error bit in status word SY.44 or SY.51 is not set. The status message in ru.00 and the
switching condition "4: error", however, display the undervoltage error.