Start-Up - Siemens SIMOVERT Master Drives Betriebsanleitung

02.04
4

Start-up

The units 6SE70 are operated with high voltages.
All work on the unit must only be carried out by qualified persons.
The unit must only be operated with the factory-fitted front covers.
Non-observance of warning notices can result in death, severe personal injury or
considerable property damage.
Owing to the dc link capacitors, a hazardous voltage still prevails inside the unit for up
to 5 min. after deactivation. This is why it is only permitted to open the unit after a
corresponding waiting period.
Despite the fact that the power section is voltage-isolated, hazardous voltages are
present in the unit due to the external power supply for the fan.
When working on the open unit, pay attention to the fact that live parts are exposed.
Even when the motor is at standstill, the following parts of the unit may be carrying a
live voltage:
- the mains connection terminals U1/L1, V1/L2 and W1/L3
- the output terminals C/L+ and D/L-
- the terminals of the control terminal strip
- the fan terminals
The user is responsible for ensuring that the rectifier unit, converter, motor and other
units are installed and connected in accordance with the technical regulations
recognised in the country of installation (in Germany: VDE, VBG4) and other regionally
valid regulations. In doing so, particular attention must be paid to cable dimensioning,
fusing, earthing, deactivation, isolation and overcurrent protection.
If there are high capacitances (noise suppression capacitors) between the star point of the mains (earth) and
the dc link, and the dc link is unloaded, it may charge up by
No precharging takes place if the rated ac-side voltage is set too high (with S500). The fault signal
(OVERVOLTAGE) is issued if it is set too low.
Operation with a main contactor and a latching circuit is recommended to prevent unexpected switching
after malfunctions (see Chapter 7.1 for details of how to acknowledge a fault).
The fan is deactivated only in the event of faults.
Siemens AG 6SE7087-6AE85-0AA0
Common Rectifier Operating instructions
WARNING
NOTES
2 more than is normally the case.
Start-up
4-1
ENGLISH