Connections 02.00
6-18 Siemens AG 6RX1700-0AD76
SIMOREG DC Master Operating Instructions
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
1U1 1V1 1W1
L1 L2 L3
1C1
(1D1)
1D1
(1C1)
3C 3D
2)
1)
3)
X166X165
1U1 1V1 1W13U1 3W1L1 L2 L3 5W15U1
1C1
(1D1)
1D1
(1C1)
M
3C 3D
2)
1)
3)
1U1 1V1 1W1L1 L2 L3
1C1
(1D1)
1D1
(1C1)
3C 3D
2)
1)
3)
5N1
4)
NC
3U13W15W15U15N1
4)
NC
3U13W15W15U15N1
4)
NC
CUD2
X166X165
CUD2 CUD2
X166X165
5) 5) 5)
34 37 38
CUD1
34 37 38
CUD1
34 37 38
CUD1
SIMOREG-converter (Slave)
Fan Armature
SIMOREG-converter (Master) SIMOREG-converter (Slave)
FieldPower
supply
Fan ArmatureFieldPower
supply
Fan ArmatureFieldPower
supply
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 higher is recommended for operation without derating (reduced
current).
Caution:
Parallel connections may only be made between converters with the same DC current rating!
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