3.4.5.3
Return energy feed
Function
The drive can return generative energy to the servo drive during a deceleration phase..
The servo drive has reactive current braking. If the DC link voltage lies above a defined threshold value
due to the return energy feed of the drive, the reactive current braking switches on and dissipates this
energy in the drive and the motor cable.
The automatic detection of the threshold value for the reactive current braking can be switched off
with Px.102107 and specified via the parameters Px.102108 and Px.102109.
The reactive current braking can be completely deactivated with Px.102104.
If the load supply of several devices is connected with one another, the energy returned from a drive
can be used by other devices. If the DC link voltage rises above an automatically identified threshold
value, the intermediate circuit is disconnected from the load supply to protect the other devices.
The automatic detection of the threshold value for the switch-off can be switched off with Px.10184
and specified via the parameter Px.10185.
The protective function can be completely deactivated with Px.10183 so that the intermediate circuit is
not disconnected from the load supply regardless of the voltage.
Parameters and diagnostic messages
ID Px.
Parameters
Description
Voltage from which the DC link recovery is deactivated
Access
read/−
Update
effective immediately
10181
DC link recovery deac-
tivation
Unit
V
DC link recovery status
Access
read/−
Update
effective immediately
10182
DC link recovery
status
Unit
−
Deactivation of the DC link recovery
Access
read/write
Update
effective immediately
10183
DC link recovery deac-
tivation
Unit
−
Activation of the automatic voltage determination
Access
read/write
Update
reinitialization
10184
Activation automatic
voltage determination
Unit
−
Product configuration
197
Festo — CMMT-ST-SW — 2019-02
Summary of Contents for CMMT-ST-SW
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