Delta ASD-A3-0121, User Manual

Page: 36 / 603

ASDA-A3 Installation
Revision December, 2017
2-13
2
2.8 Selecting the regenerative resistor
When the direction of torque is different from the direction of rotation, the energy generated
returns to the servo drive from the load. This energy is turned into electricity in the capacitance of
the DC Bus and thus increases the voltage. When the voltage reaches a given value, it is
consumed by a regenerative resistor. The servo drive has a built-in regenerative resistor.
You can also use the external regenerative resistor if needed.
(1) Moving direction of the object; (2) Direction of torque; (3) Regenerative energy
The built-in regenerative resistor in the ASDA-A3 is as follows:
Servo drive
(kW)
Built-in regenerative resistor specifications
Built-in regenerative
resistor capacity
(Watt)
Minimum allowable
resistance
(connected to external
resistor)
(Ohm)
Resistance
(P1.052) (Ohm)
Capacity
(P1.053) (Watt)
0.1 - - - 60
0.2 - - - 60
0.4 100 40 20 60
0.75 100 40 20 60
1.0 100 40 20 30
1.5 100 40 20 30
2.0 20 80 40 15
3.0 20 80 40 15