Delta ASD-B2-0121-F, User Manual

Page: 27 / 291

Installation ASDA-B2-F
2-10
September, 2015
2
(2) Simple Selection
Choose the appropriate regenerative resistor according to the allowable frequency and empty
load frequency in actual operation. The so-called empty allowable frequency is the frequency of
continuous operation when the servo motor runs from 0 r/min to the rated speed and then
decelerates from the rated speed to 0r/min within the shortest time. The following table lists the
allowable frequency when the servo drive runs without load (times/min).
Allowable frequency when the servo drive runs without load (times/min)
and uses a built-in regenerative resistor
Motor Capacity
Servo Motor
600 W 750 W 900 W 1.0 kW 1.5 kW 2.0 kW 2.0 kW 3.0 kW
06 07 09 10 15 20 20 30
ECMA
□□
C - 312 - 137 - 83 (F100) -
ECMA
□□
E - - - 42 32
24
(F130)
10
(F180)
11
ECMA
□□
G 42 - 31 - - - - -
When the servo motor runs with load, the allowable frequency will be different according to
different load inertia or speed. The following is the calculation method.
“
m
”
represents load / motor inertia ratio.
Allowable fr equency =
Allow able frequency w hen serv o motor run w ithout load
m + 1
x
Rated s peed
Operating speed
times
mi n.
2
The comparison table of external regenerative resistor is provided below. Please choose the
appropriate regenerative resistor according to the allowable frequency.
The table below describes the suggested allowable frequency (times/min) of regenerative
resistor when the servo drive runs without load.
Allowable frequency of regenerative resistor when the servo drive runs without load (times/min)
Motor Capacity
Suggested
Regenerative
Resistor
ECMA
□□
C
100 W 200 W
400 W
(F60)
400 W
(F80)
750 W 1.0 kW 2.0 kW
01 02 04 04 07 10 20
200 W 80
Ω
32793 6855 4380 1784 1074 458 273
400 W 40
Ω
- - - - - 916 545
1 kW 30
Ω
- - - - - - 1363
Allowable frequency of regenerative resistor when the servo drive runs without load (times/min)
Motor Capacity
Suggested
Regenerative
Resistor
ECMA
□□
E
0.5 kW 1 kW 1.5 kW 2.0 kW 2.0 kW 3.0 kW
05 1.0 15 20 20 30
200 W 80
Ω
149 144 109 83 35 22
400 W 40
Ω
- 289 217 166 70 44
1k W 30
Ω
- - - 416 175 110