Connecting-up
05.2005
6SE7087-2NP85-0AA0 Siemens
AG
7-4
Operating Instructions
SIMOVERT MASTERDRIVES
7.1 Power
connections
To ensure installation compliant with UL standards, the power supply
cables must be rated for a minimum temperature of
≥
75 °C.
The rectifier unit must not be operated without a main contactor. The
main contactor protects it against damage in the event of a fault or
failure of the external 24 V supply (X9).
The protective conductor must be connected up both on the mains side
and on the motor side.
On account of leakage currents through the interference-suppression
capacitors, a minimum cross-section of 10 mm² must be used in
accordance with EN 50178. If mains connections with cross-sections
less than 10 mm² are used, the following measures can be applied.
If the unit is mounted on a grounded mounting surface via a conductive
connection, the protective conductor cross-section can be the same as
that of the supply-cable conductor.
In the case of insulated installation or a poor conductive connection to
the mounting surface, a separate protective conductor with a cross-
section of 10 mm² can be connected up instead of the protective
conductor of the mains connection.
7.1.1
Power connections for 15 kW rectifier unit
On top of the unit next to terminal X6 is an extra protective conductor
connection in the form of a threaded M4 bolt.
It is used for connecting a protective conductor for units in isolated
connection.
The mains connection is located on the bottom of the unit.
When connecting-up, it is not necessary to make allowance for the
direction of the rotating field of the supply system.
Terminal Meaning
Range
PE
Protective conductor connection
3AC 380 - 480 V
U1 / L1
Phase U1 / L1
3AC 380 - 480 V
V1 / L2
Phase V1 / L2
3AC 380 - 480 V
W1 / L3
Phase W1 / L3
3AC 380 - 480 V
Connectable cross-section: 10 mm² (AWG 6)
Terminal W1 is at the right when installed.
Table 7-1
Mains connection
NOTE
CAUTION
Protective
conductor
Protective
conductor
X1 - Mains
connection
