Справочник Пользователя для Siemens 440
Issue 10/06
6 Commissioning
MICROMASTER 440
Operating Instructions (Compact)
Operating Instructions (Compact)
59
t
P1234
OFF1/OFF3
ON
t
t
⏐f⏐
OFF ramp
P1233
2
t
OFF2
tt
P0347
OFF2
OFF2
DC braking
0
1
DC braking active
r0053
Bit00
P1234 =...
DC braking start frequency
(entered in Hz)
Sets the start frequency for the DC brake.
6.4.18.5 Compound
braking
P1236 =...
Compound braking current
(entered in %)
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 6.4.12").
of compound braking. The value is entered in [%] relative to rated motor current (P0305).
(see also 6.4.12").
Compound braking switch-on level
P0210
2
13
.
1
V
2
1.13
U
mains
DC_Comp
⋅
⋅
=
⋅
⋅
=
If P1254 = 0 :
1242
r
0.98
U
DC_Comp
⋅
=
Compound braking switch-on level
otherwise :
⏐f⏐
i
t
t
f_act
f_set
P1236 = 0
Without Compound braking
u
t
⏐f⏐
i
t
t
f_act
f_set
P1236 > 0
With Compound braking
t
DC-link
u
DC-link
U
DC_Comp
650 Hz
0 %