Siemens SINAMICS DCM - Page 791

SINAMICS DCM List Manual (LH8), 02/2015, 6RX1800-0ED76
791
3 Function diagrams
3.13 Field circuit control
Fig. 3-112 6920 – Field reversal
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Rs =
Rs V1
++
+ +
+
+
Rs
8,000 μs
[1020.7]
M
K20 K21
1C1 1D1 3C 3D
*)
+
+
+
+
[6805.2]
[6805.3]
r53026.01
If_act < If_set x
r53026.00
If < If_min
[8025.5]
[8025.5]
19
X177
20
23
k21
K20
k20
K21
CUD
+
+
+
++
CUD DO 0 t_del
p50775 (0)
CUD DO inv
p50770[0] (0)
CUD DO 1 t_del
p50776 (0)
CUD DO inv
p50770[1] (0)
M
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˖
Rs
V1
++
+ +
r53195.02
n_act invert
[6810.1]