09.02  Connection 
Siemens AG    6SE7087-6AK85-1AA0 
3-1 
Rectifier/Regenerating Unit    Operating instructions 
3 Connection 
WARNING 
The units are operated at high voltages. 
Only carry out connection work after disconnecting the voltage! 
All work on the unit must only be carried out by qualified persons. 
Non-observance of warning notices can result in death, severe personal injury or 
considerable property damage. 
Damage or destruction can result if the unit is incorrectly connected. 
As the result of the dc link capacitors in the connected SIMOVERT Master Drives, the unit 
still contains a hazardous voltage up to 5 min. after isolation. This is why it is only 
permitted to open the unit after observing an appropriate waiting time. 
The power terminals and control terminals may carry a voltage even when the motor is at 
standstill. 
When working on the open unit, pay attention to the fact that live parts are exposed. The 
unit may only be operated with the front covers attached. 
 
The user is responsible for ensuring that the common rectifier, converter, motor and other 
units are installed and connected in accordance with the technical regulations recognized 
in the country of installation and other regionally valid regulations. In doing so, particular 
attention must be paid to cable dimensioning, fusing, earthing, deactivation, isolation and 
overcurrent protection. 
CAUTION 
 
The power cables must be fixed in position mechanically outside the unit. 
 
NOTICE 
An external 24 V power supply  is required for operation of the units (see Chapters 3.5 and 9.3). 
Operational range of the unit: 20 V to 30 V. 
 
AoteWell Automation Sales Team
Buy Siemens PLC HMI Drives at AoteWell.com