External Braking Resistor - Dcp, R1; Motor Holding Brake - Siemens SINAMICS V90 Operating Instructions Manual

Grounding
To ensure better EMC effects, you are recommended to strip the encoder cable and connect
the cable shield to earth, as shown in the following figure:
4.6

External braking resistor - DCP, R1

The SINAMICS V90 has been designed with an internal braking resistor to absorb
regenerative energy from the motor. When the internal braking resistor cannot meet the
braking requirements (e.g. the alarm A52901 is generated), you can connect an external
braking resistor. For the selection of braking resistors, refer to Accessories (Page 35).
Connecting an external braking resistor
Damage to the drive
Before connecting an external resistor to DCP and R1, remove the short-circuit stick on the
connectors. Otherwise, the drive may be damaged.
For the connection of the external braking resistor, refer to System connection (Page 77).
4.7

Motor holding brake

The motor holding brake is used to prevent the moving load from unwanted motions (for
example, falling under the influence of gravity) when the servo system is deactivated (for
example, the servo power is shut off). The servo motor can move because of its own weight
or an external force even the motor power has been cut off.
The holding brake is built in the servo motors with brakes.
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 09/2016, A5E36037884-002
WARNING
4.6 External braking resistor - DCP, R1
Connecting
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