Selecting The Regenerative Resistor - Delta ASDA-B3 Series User Manual

ASDA-B3

2.7 Selecting the regenerative resistor

When the direction of torque is opposite to 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 an external regenerative resistor if needed.
(2)
(1)
(1) Moving direction of the object; (2) Direction of torque; (3) Regenerative energy
Specifications of the built-in regenerative resistor in the ASDA-B3 are as follows:
Servo drive (kW)
0.1
0.2
0.4
0.75
1.0
1.5
2.0
3.0
(3)
Specifications of the
built-in regenerative resistor
Resistance (Ohm) Capacity (Watt)
-
-
100
100
100
100
20
20
(3)
Capacity of the built-in
regenerative resistor
(Watt)
- -
- -
40 20
40 20
40 20
40 20
80 40
80 40
Installation
(1)
(2)
Minimum allowable
resistance value
(reference for external
resistors) (Ohm)
60
60
60
60
30
30
15
15
2
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