Siemens SINAMICS V90 User Manual

Connecting
4.6 External braking resistor - DCP, R1
SINAMICS V90, SIMOTICS S-1FL6
168 Operating Instructions, 04/2019, A5E36037884-007
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 more information about how to select a braking resistor, see Section
"Braking resistor (Page 51)".
Note
The 200 V variant servo drive with rated power of 0.1 kW (FSA) does not have a built
-in
resistor.
Connecting an external braking resistor
NOTICE
Damage to the drive due to not moving the short-circuit stick between terminals DCP and
R2
There is a damage to the drive if you do not move the short-circuit stick between terminals
DCP and R2 when using an external resistor.
• Before connecting an external resistor to DCP and R1, remove the connection between
terminals DCP and R2.
For more information about how to connect the external braking resistor, see Section
"System connection diagrams (Page 105)".
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.
For 400 V variant servo drive, a motor holding brake interface (X7) is integrated in the front
panel. You can connect it to a servo motor with brake to use the function of motor holding
brake directly.
For 200 V variant servo drive, no specific motor holding brake interface is integrated. To use
the function, you need to connect the drive to a third-party device via the control/status
interface (X8).
Note
•
Use this brake for the "hold" purpose only, that is, to hold the stalling state only. Never
use this for the "brake" purpose to stop the load in motion. Use the holding brake only to
hold a stopped motor.
•
The holding brake is activated at the same time when the motor power is cut off.

Siemens SINAMICS V90 Specifications

General

Power Range	0.05 kW to 7.0 kW
Protection Class	IP20
Communication	USS/Modbus RTU
Feedback	Incremental encoder
Input Voltage	1AC 200 V to 240 V, 3AC 380 V to 480 V
Control Modes	Position, Speed, Torque
Operating Temperature	0 °C to +40°C
Storage Temperature	-40°C to +70°C
Relative Humidity	5% to 95% (non-condensing)
Altitude	Up to 1000 m above sea level