14.3.2
Behaviour in transition 5 (Disable operation)
The
behaviour in transition 5 from "Operation enabled" to "Switched on" can be pa-
rameterized. The behaviour is set via parameter
State transition 5
392.
Parameter
Setting
No.
Description
Min.
Max.
Fact. sett.
392 State transition 5
0
2
2
Operation mode
Function
0 - Coast to stop
immediate transition from "Operation enabled“ to
"Switched on“, free stoppage of the drive
1 - DC brake
activation of DC brake; at the end of DC braking there is a
change of state from "Operation enabled“ to "Switched
on“
2 - Ramp
transmission with normal stop ramp; after reaching stand-
still, there is a change of state from "Operation enabled“
to "Switched on“
Setting operation mode “1 - DC brake” is only possible in applications with V/f charac-
teristic (e.g. configuration 110), as other applications do not know such an operation
mode.
If the frequency inverter is operated with a configuration which does not know the DC
braking operation mode (e.g. configuration 210, field-orientation speed controlled),
value "1" cannot be set. It is also not offered in the selection menus of the KP500
control unit or the VPlus program.
The default value for parameter
State transition 5
392 is operation mode "2 - Ramp".
For configurations with torque control, the default value is operation mode "0 - Coast
to stop". If the configuration is changed, the value set for
State transition 5
392 is
also altered, if necessary.
“Behaviour in transition 5” is only relevant for non motion control configurations (Pa-
rameter
Configuration
30 ≠ x40).
If transition 5 has been triggered with
State transition 5
392 = “1 - DC brake”, a new
control word is only accepted after the completion of the transition process. The
change of state from "Operation enabled“ to "Ready“ is carried out after the time pa-
rameterized for the DC brake
Braking time
632 has expired.
If the parameter
State transition 5
392 = “2 – Ramp” has been set, the
Control word
can be set back to “Enable operation” during the stoppage of the drive. In this way,
the drive runs back up to its set reference value and remains in the state "Operation
enabled“.
The change of state from "Operation enabled“ to “Switched on” is carried out after
the set switch-off threshold has been reached and the set holding time (equivalent to
the behaviour in a quick stop) has expired. In this, the parameters
Switch-off thresh-
old
637 (percentage of
Maximum Frequency
419) and
Holding time
638 (holding
time after switch-off threshold reached) are relevant.
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CM-EtherCAT
07/13