Siemens SIMOTICS S-1FL6, Руководство по эксплуатации

Страница: 103 / 432

SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2019, A5E36037884-007
101
Connecting
4
4.1 System connection
4.1.1 Safety instructions
WARNING
Electric shock and damage to property from improper connections
Improper connections have high risks of electrical shock and short circuit, which will
jeopardize personal safety and equipment.
•
The drive must be directly connected with the motor. It is not permissible to connect a
capacitor, inductor or filter between them.
•
The line supply voltage must be within the allowable range (refer to the drive rating
plate). Never connect the line supply cable to the motor terminals U, V, W or connect
the motor power cable to the line input terminals L1, L2, L3.
•
Never wire up the U, V, W terminals in an interchanged phase sequence.
•
If the CE marking for cables is mandatory in some cases, the motor power cable, line
supply cable and brake cable used must all be shielded cables.
•
For terminal box connection, make sure that the clearances in air between non-insulated
live parts are at least 5.5 mm.
•
Cables connected may not come into contact with rotating mechanical parts.
WARNING
Risk of electric shock and fire from a network with an excessively high impedance
Excessively low short-circuit currents can lead to the protective devices not tripping or
tripping too late, and so causing electric shock or a fire.
• In the case of a conductor-conductor or conductor-ground short-circuit, ensure that the
short-circuit current at the point where the drive is connected to the line supply at least
meets the minimum requirements for the response of the protective device used.
•
You must use an additional residual-current device (RCD) if a conductor-ground short
circuit does not reach the short-circuit current required for the protective device to
respond. The required short-circuit current can be too low, especially for TT systems.