6 Commissioning

Issue 10/06

6.4.18.4DC brake

P1230 = ...

P1232 =...

P1233 =...

BI: Enabling the DC brake

This enables DC braking using a signal that was used from an external source. The function remains active as long as the external input signal is active. DC braking causes the motor to quickly stop by injecting a DC current

BI: Enable DC brk.

P1230.C

1

 

(0:0)

0

 

f

t

f_set

 

f*

 

DC braking

 

 

 

 

f_act

 

 

t

 

i

P0347

 

 

t

DC braking active

r0053

1

 

 

 

 

 

 

 

 

 

 

 

 

Bit00

0

 

 

 

 

 

 

 

 

 

 

t

 

 

 

 

 

 

Note: DC brake can be applied in drive states r0002 = 1, 4, 5

 

 

 

 

 

 

 

 

 

DC braking current (entered in %)

 

100 %

 

 

 

Defines level of DC current in [%] relative to rated motor current (P0305).

 

 

 

 

 

Duration of DC braking (entered in s)

 

0 s

Defines duration for which DC injection braking is to be active following an OFF1 or OFF3 command.

1

 

ON

 

OFF1/OFF3

t

 

P0347

OFF2

 

 

t

f

 

P1234

OFF2

DC braking

 

 

t

DC braking active

r0053

1

 

Bit00

0

t

 

 

P1233

58

MICROMASTER 440

Operating Instructions (Compact)

Page 58
Image 58
Siemens 440 operating instructions P1230 = P1232 = P1233 =, BI Enabling the DC brake, DC braking current entered in %