Power Connections - Siemens SIMOVERT Master Drives 6SE70 Betriebsanleitung

Connection
3.1

Power connections

U1/L1
PE1
Mains fan
X19
X9
Figure 3.1 Mains connection size H
1) Due to the press-in nuts, cable lugs or DC rails can only be connected to the terminal rails from the front.
The operating coils of contactors and relays that are connected to the same supply
network as the unit or that are located in close proximity of the unit must be connected to
overvoltage limiters, e.g. RC circuits.
An RCCB (residual-current-operated circuit-breaker) must not be used to protect the
rectifier/regenerating unit (DIN VDE 0160).
Voltage is only permitted to be applied to the unit when SIMOVERT Master Drives are
connected. Operation without a connected DC link capacitor is not permitted!
If the DC link terminals are connected incorrectly or short-circuited, the SIMOVERT Master
Drives inverter will be destroyed!
In order to prevent feedback of interference to the power supply system, limit harmonics
and reduce the current ripple, the total inductance of the power system incoming feeder
connection (power system inductance including commutating reactor) a total relative short-
circuit voltage u
Connect the fan power supply to X19.
The fan continues to run for about four minutes or until a certain cooling element
temperature threshold is undershot (provided its power supply is connected) after the unit
has been switched off, following fault messages, on canceling the enable signal and after
isolating the system supply connection.
Despite switching the voltage off at the power terminals, a voltage may still exist on
terminal X19 due to the external fan supply.
3-2
ENGLISH
1)
DC link
(DC output)
C/L+ D/L-
1)
Mains
V1/L2 W1/L3
PE2
of at least 3% .
k
PE1
U1/L1
Mains fan
X19
X9
Figure 3.2 Mains connection size K
WARNING
1)
DC link
(DC output)
C/L+ D/L-
V1/L2
1)
Mains
PE2
Siemens AG 6SE7087-6AK85-0AA0
Common Rectifier Operating instructions
09.02
W1/L3