Compound Braking - Siemens MICROMASTER 420 Operating Instructions Manual

3 Functions
DC braking
P1232 =... DC braking current (entered in %)
Defines level of DC current in [%] relative to rated motor current (P0305).
Duration of DC braking (entered in s)
P1233 =...
Defines duration for which DC injection braking is to be active following an OFF1 or OFF3
command.

Compound braking

Compound braking current (entered in %)
P1236 =...
Defines DC level superimposed on AC waveform after exceeding DC-link voltage threshold
of compound braking. The value is entered in [%] relative to rated motor current (P0305).
(see also 0).
If P1254 = 0 :
Compound braking switch-on level
otherwise :
Compound braking switch-on level
Vdc controller
Configuration of Vdc controller
P1240 =...
Enables / disables Vdc controller.
0 Vdc controller disabled
1 Vdc-max controller enabled
Auto detect Vdc switch-on levels
P1254 =...
Enables/disables auto-detection of switch-on
levels for Vdc control functionalities.
0 Disabled
1 Enabled
PID controller
BI: Enable PID controller
P2200 =...
PID mode Allows user to enable/disable the PID controller. Setting to 1 enables the PID
controller. Setting 1 automatically disables normal ramp times set in P1120 and P1121 and
the normal frequency setpoints
CI: PID setpoint
P2253 =...
Defines setpoint source for PID setpoint input
CI: PID trim source
P2254 =...
Selects trim source for PID setpoint. This signal is multiplied by the trim gain and added to
the PID setpoint
Ramp-up time for PID setpoint
P2257 =...
Sets the ramp-up time for the PID setpoint
Ramp-down time for PID setpoint
P2258 =...
Sets ramp-down time for PID setpoint
CI: PID feedback
P2264 =...
Selects the source of the PID feedback signal.
82
U 1.13 2
DC_Comp
U 0.98 r 1242
DC_Comp
1
V
DC
r1242
1
V
-controller active
DC_max
1
r0056 Bit14
0
f
MICROMASTER 420
Issue 07/04
100 %
0 s
0 %
V . 1 13 2 P0210
mains
t
A0911
t
f
act
f
set
t
0.0
0.0
0.0
1.00 s
1.00 s
755.0
Operating Instructions
6SE6400-5AA00-0BP0