Dc Link Connection; Auxiliary Power Supply/Main Contactor - Siemens SIMOVERT FC Operating Instructions Manual

Connecting-up
Type of Order No.
construction
E 6SE70_._.-._._E_0
F 6SE70_._.-._._F_0
G 6SE70_._.-._._G_0
H 6SE70_._.-._._H_0
Table 3.2 Possible connection cross-sections and bolted joints
3.1.1 Protective conductor connection
The protective conductor should be connected-up on both the supply- and motor sides. It should be dimensioned
according to the power connections.
3.1.2

DC link connection

The "braking unit" (6SE7087-6CX87-2DA0) and "dv/dt filter" (6SE7087-6CX87-1FD0) options can be connected
at the DC link terminals C/L+ and D/L−.
3.2

Auxiliary power supply/main contactor

The auxiliary power supply and the main contactor are connected through the 5-pin connector X9.
Connector X9 is supplied together with the connectors for the control terminal strip. Cables from 0.2 mm
2
2.5 mm (AWG: 24 to 14) can be connected to X9.
The auxiliary power supply is used, if the drive converter is fed through a
main contactor and the control functions have to be maintained, even when
the main contactor is opened.
The main contactor is controlled through floating contacts -X9.4 and -X9.5
(software pre-setting).
More detailed information is provided in the Section „options".
Term. Function description
24 V DC external ≥ 3 A (max. 5 A dependent on the options)
1
2 Reference potential to DC
3 Unassigned
4 Main contactor control
5 Main contactor control
Table 3.3 Connector assignment for -X9
The main contactor coil must be provided with overvoltage limiters, e.g. RC element.
3-4
Possible connection cross-
section
2
(mm ) lt. VDE AWG
2 x 70 2 x 00
2 x 70 2 x 00
2 x 150 2 x 300
2 x 240 2 x 500
NOTES
Bolted joint
M10
M10
M12
M12
ext. 24 VDC
pwr.supp.
P
1
-X9
Fig. 3.1
Siemens AG
SIMOVERT MASTER DRIVES
08.96
2
to
Main contactor
control
M
2 3 4 5
AC 230 V
1 kVA
Connecting an external
auxiliary 24 V DC power
supply and main contactor
control
6SE7087-6AH70
Operating Instructions