Parallel Connection Of Converters; Circuit Diagram Showing Parallel Connection Of Simoreg Converters - Siemens 6RA7086-6KS22 Operating Instructions Manual

05.05
6.3

Parallel connection of converters

6.3.1

Circuit diagram showing parallel connection of SIMOREG converters

3AC 50-60Hz, 400V
3AC 50-60Hz, 575V
3AC 50-60Hz, 690V
3AC 50-60Hz, 830V
3AC 50-60Hz, 400V
NC
L1 L2 L3 5N1
Fan
SIMOREG-converter (Slave)
CUD1
X165
34 37 38
1) The same phase sequence is required between 1U1 /1V1 /1W1.
2) The same phase sequence is required between 1C1 / 1D1.
3) The converters are connected by means of an (8-pin) shielded Patch cable of type UTP CAT5
according to ANSI/EIA/TIA 568, such as those used in PC networking.
A standard 5 m cable can be ordered directly from Siemens (order number: 6RY1707-0AA08).
(n-1) cables are needed to connect n converters in parallel.
The bus terminator must be activated (U805=1) on the converter at each end of the bus.
4) These fuses may only be used on converters up to 850A.
5) For converters up to 850A in 4Q operation only
The terminal expansion option (CUD2) is required for each converter in a parallel connection.
A maximum of 6 converters can be connected in parallel.
When several converters are connected in parallel, the master unit should be positioned in the
center to allow for signal transit times. Maximum length of paralleling interface cable between
master and slave converters at each end of bus: 15m.
For the purpose of current distribution, separate commutating reactors of the same type are
required for each SIMOREG converter. Current distribution is determined by the differential reactor
tolerance. A tolerance of 5% or better is recommended for operation without derating (reduced
current).
Caution:
Parallel connections may only be made between converters with the same DC current rating!
Siemens AG 6RX1700-0AD76
SIMOREG DC Master Operating Instructions
4)
1)
5W15U1 3U13W1 1U1 1V1 1W1
Power Field Armature
supply
CUD2
X166
1C1 1D1
3C 3D (1D1) (1C1)
2)
3)
5)
NC
L1 L2 L3 5N1 5W15U1 3U13W1 1U1 1V1 1W1
Fan Power Field
supply
SIMOREG-converter (Master)
CUD1 CUD2
X165 X166
1C1
34 37 38
3C 3D (1D1)
3)
4)
NC
1)
L1 L2 L3 5N1 5W15U1
Armature Fan Power
supply
SIMOREG-converter (Slave)
CUD1 CUD2
X165 X166
1D1
34 37 38
(1C1)
2)
3)
5)
M
Connections
4)
1)
3U13W1 1U1 1V1 1W1
Field Armature
1C1 1D1
3C 3D (1D1) (1C1)
2)
5)
6-21