Siemens SIMOREG DC-MASTER Operating Instructions Manual page 44

Commissioning
PNU Description
U577
Voltage setpoint for the upper response threshold of the SIMOREG
(2577)
CCP chopper
The set voltage value defines the upper response threshold of the voltage
limiter implemented in the SIMOREG CCP. Within the scope of the turn-off
operation of the CCP, this limits the counter-voltage that occurs - which is
also necessary - when the armature current is reduced to a value that is not
dangerous for the basic unit and the associated SIMOREG CCP. The
required setting value depends on the blocking voltage strength of the
power semiconductors used in the basic converter (SIMOREG DC-
MASTER) and in the SIMOREG CCP and is therefore dependent on the
Unit MLFB.
The following table should be used to correctly set this parameter.
As a result of the unit MLFB for the basic converter and SIMOREG CCP,
two setting values are obtained from which the lower of the two should be
set at U577.
Example:
Basic converter MLFB: 6RA7085-6DV62-0 (r070=9) ⇒ U577=1300 V
SIMOREG CCP MLFB: 6RA7085-6FC00-0 (n570=250) ⇒ U577=1100 V
therefore the following setting is obtained: U577=1100 V
Table to determine the setting value for U577:
MLFB SIMOREG
DC-MASTER
6RA7013-6DV62-0
6RA7018-6DV62-0
6RA7025-6DV62-0
6RA7028-6DV62-0
6RA7031-6DV62-0
6RA7075-6DV62-0
6RA7078-6DV62-0
6RA7081-6DV62-0
6RA7085-6DV62-0
6RA7087-6DV62-0
6RA7091-6DV62-0
6RA7093-4DV62-0
6RA7095-4DV62-0
6RA7025-6GV62-0
6RA7031-6GV62-0
6RA7075-6GV62-0
6RA7081-6GV62-0
6RA7085-6GV62-0
6RA7087-6GV62-0
6RA7090-6GV62-0
6RA7093-4GV62-0
6RA7095-4GV62-0
6RA7086-6KV62-0
6RA7090-6KV62-0
6RA7093-4KV62-0
6RA7095-4KV62-0
6RA7088-6LV62-0
6RA7093-4LV62-0
6RA7095-4LV62-0
6RA7018-6DS22-0
6RA7025-6DS22-0
6RA7028-6DS22-0
6RA7031-6DS22-0
6RA7075-6DS22-0
6RA7078-6DS22-0
6RA7081-6DS22-0
6RA7085-6DS22-0
6RA7087-6DS22-0
6RA7091-6DS22-0
6RA7093-4DS22-0
6RA7095-4DS22-0
44
ENGLISH
[from SW 2.2 and higher]
MLFB Setting value for U577 [V]
characteristic
number (r070)
1 1300
2 1300
3 1300
4 1300
5 1300
6 1300
7 1300
8 1300
9 1300
10 1300
11 1300
12 1500
13 1500
14 1700
15 1700
16 1700
17 1700
18 1700
19 1700
20 1700
21 1700
22 1700
23 2100
24 2100
25 2100
26 2100
27 2500
28 2500
29 2500
30 1300
31 1300
32 1300
33 1300
34 1300
35 1300
36 1300
37 1300
38 1300
39 1300
40 1500
41 1500
SIMOREG DC-MASTER Converter Commutation Protector
Value range No. of
[dimension] indices
Graduation Factory
setting (FS)
Type
850 to 1600 Ind: None
[V] FS=1600
1 V
Type: O2
Siemens AG 6RX1700-0DD74
Operating Instructions
12.2010
See/
change
(Access /
state)
P052 = 3
P051 = 40
online