MICROMASTER 440 - Siemens AS
MICROMASTER 440 - Siemens AS
MICROMASTER 440 - Siemens AS
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Issue 10/06<br />
6 Commissioning<br />
2<br />
ON<br />
OFF1/OFF3<br />
OFF2<br />
P0347<br />
t<br />
t<br />
⏐f⏐<br />
P1234<br />
OFF ramp<br />
OFF2<br />
DC braking<br />
DC braking active<br />
OFF2<br />
t<br />
r0053<br />
Bit00<br />
1<br />
0<br />
P1233<br />
t<br />
P1234 =...<br />
DC braking start frequency (entered in Hz)<br />
Sets the start frequency for the DC brake.<br />
650 Hz<br />
6.4.18.5 Compound braking<br />
P1236 =... Compound braking current (entered in %)<br />
0 %<br />
Defines DC level superimposed on AC waveform after exceeding DC-link voltage threshold<br />
of compound braking. The value is entered in [%] relative to rated motor current (P0305).<br />
(see also 6.4.12").<br />
If P1254 = 0 :<br />
Compound braking switch-on level<br />
U = 1.13 ⋅ 2 ⋅ Vmains<br />
= 1.13 ⋅ 2 ⋅P0210<br />
DC_Comp<br />
otherwise :<br />
Compound braking switch-on level<br />
= 0.98 ⋅ r1242<br />
U DC_Comp<br />
⏐f⏐<br />
P1236 = 0<br />
Without Compound braking<br />
f_set<br />
⏐f⏐<br />
P1236 > 0<br />
With Compound braking<br />
f_set<br />
f_act<br />
f_act<br />
t<br />
t<br />
i<br />
i<br />
t<br />
t<br />
u<br />
DC-link<br />
u DC-link<br />
U DC_Comp<br />
t<br />
t<br />
<strong>MICROM<strong>AS</strong>TER</strong> <strong>440</strong><br />
Operating Instructions (Compact) 59
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