Activation Via Parameters - Siemens SINAMICS S120 Function Manual
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Also See for SINAMICS S120:
- Function manual (1094 pages) ,
- Diagnostic manual (947 pages) ,
- Manual (848 pages)
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Basic functions
6.11 Armature short-circuit braking, DC braking
6.11.2.1
Activation via parameters
Setting
DC braking is set with parameter p1231 = 4.
● Setting the braking current for DC braking with p1232[0..n]
● Setting the braking current duration for DC braking with p1233[0..n]
● Setting the start speed for DC braking with p1234[0..n]
Activation
The function is activated if the signal source of p1230 is set to "1". Initially, for the motor
demagnetization time p0347[0 ... n], the pulses are inhibited until the motor is demagnetized.
The DC braking start speed parameter p1234 is not taken into account with this activation.
The DC braking current p1232[0 ... n] is injected into the motor as long as a "1" signal is
available at the input of p1230. The motor can be braked down to standstill.
If the drive is switched off - and DC braking is activated - the drive switches itself on. DC
current is then injected into the stator windings.
Deactivation
If DC braking is deactivated by setting the signal source of p1230 to "0" and the ON
command is still active, then the drive returns to its selected operating mode.
The following applies:
● For servo control (with encoder):
● For vector control (with and without encoder):
● For V/f control:
296
The drive returns to close-loop control after the demagnetization time has elapsed (p0347
can also be set to 0).
When the "flying restart" function is activated, the Motor Module is synchronized with the
motor frequency. The drive is then switched back into closed-loop controlled operation. If
the "flying restart" function is not activated, the drive can only be restarted from standstill.
In this case, for a new start you must wait until the drive has come to a standstill.
When the "flying restart" function is activated, the Motor Module is synchronized with the
motor frequency. The drive is then switched back to V/f operation. If the "flying restart"
function is not available, the drive can only be restarted from standstill. In this case, for a
new start you must wait until the drive has come to a standstill.
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
Drive functions
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