Siemens SIMATIC ET 200pro - Braking with Regenerative Feedback to the Line; Motor Holding Brake

Setting functions
8.7 Application-specific functions
SIMATIC ET 200pro FC-2 converter
148 Operating Instructions, 04/2015, FW V4.7.3, A5E34257324B AB
8.7.3.2
Braking with regenerative feedback to the line
Typical applications for braking with energy recovery (regenerative feedback into the line
supply):
● Hoist drives
● Centrifuges
● Unwinders
For these applications, the motor must brake for longer periods of time.
The inverter can feed back up to 100% of its power into the line supply (referred to "High
Overload" base load, see Section Technical data (Page 219)).
Setting the braking with regenerative feedback to the line
Parameter
Description
Limiting the regenerative feedback for U/f control (p1300 < 20)
p0640
Motor series overload factor
(factory setting: 0.00 A, default for basic commissioning)
It is only possible to limit the regenerative power with V/f control by limiting the motor
current.
If the current exceeds this value for longer than 10 s, the inverter shuts down the motor
with fault F07806.
Limiting feedback with vector control (p1300 ≥ 20)
p1531
Regenerative power limit (factory setting: 0.01 kW)
8.7.4
Motor holding brake
The motor holding brake prevents the motor turning when it is switched off. The converter
has internal logic to optimally control a motor holding brake.
WARNING
Danger to life when touching live parts in the motor terminal box
The connections for the temperature sensor and the motor holding brake are switched to
the minus potential of the DC link. Touching live components can result in death or severe
injury.
• Always keep the motor terminal box closed when line voltage is applied to the converter.
• Isolate unused cables individually.