Delta ASDA-A2 Series User Manual page 43

A2
ASDA-
400V Series
Servo Drive (kW)
0.75
1.0
1.5
2.0
3.0
4.5
5.5
7.5
11.0
15.0
When the regenerative power exceeds the processing capacity of the servo drive, install
an external regenerative resistor. Please pay close attention to the following notes when
using a regenerative resistor.
1. Make sure the settings of resistance (parameter P1-52) and capacity (parameter P1-53)
are set correctly.
2. When installing an external regenerative resistor, make sure that its resistance value
is the same as the resistance of the built-in regenerative resistor. If combining
multiple small-capacity regenerative resistors in parallel to increase the regenerative
resistor capacity, make sure that the resistance value of the regenerative resistor
complies with the specifications listed in the table above.
3. In general, when the amount of regenerative power (average value) that can be
processed is used at or below the rated load ratio, the resistance temperature will
increase to 120°C or higher (when the regeneration occurs continuously). For safety
reasons, forced air cooling is a good way to reduce the temperature of the
regenerative resistors. We also recommend using regenerative resistors with thermal
switches. As for the load characteristics of the regenerative resistors, please check
with the manufacturer.
2-14
Specifications of Built-in Regenerative Resistors
Resistance (Ohm)
(Parameter P1-52)
80
80
80
-
-
-
-
-
-
-
Chapter 2 Installation and Storage
Capacity (Watt)
(Parameter P1-53)
100
100
100
-
-
-
-
-
-
-
Min. Allowable
Resistance (Ohm)
60
60
40
40
30
20
20
15
15
10
Revision September 2012