Delta REG2000 Series, Руководство пользователя

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10 Power Regenerative Unit Selection | REG2000
10-1
10 Power Regenerative Unit Selection
Delta offers four ways to select a REG2000 model.
A. Select the model based on the brake resistor specifications. Select the model according to the
applications that require rapid acceleration and deceleration, such as tapping, drilling
machines, and lathes.
B. Select the model based on the drive’s overload ability. A servo drive has a higher overload
ability than an AC motor drive. So select the model that has a larger capacity if you use the
servo drive.
C. Select the model based on the application load characteristics. Calculate the regenerated
power for the applications using the application's system characteristics and specifications,
especially for elevator and hoist application.
D. Use the Delta REG2000 Sizing Wizard:
中文
: http://deltavfdsizingtool.deltaww.com/REG2000/TC/index.html
ENGLISH: http://deltavfdsizingtool.deltaww.com/REG2000/EN/index.html
This chapter describes the first three model selection methods in more detail.
Model selection method 1
(based on the brake resistor specifications)
Take 220 V as an example; if you select a 1500 W 13
Ω
brake resistor with brake level set to 380 V,
then the total braking current would be 380 V / 13
Ω
= 29 A.
DC power equals to AC power, that is, V
DC
* I
DC
=
3
* V
AC
* I
AC
.
V
AC
is AC voltage
I
AC
is AC current
V
DC
is DC voltage
I
DC
is DC current
For example, I
AC
= (V
DC
* I
DC
) / (
3
*V
AC
) = (380*29) / (
3
*220) = 28.9 A.
The brake resistor's braking torque is 125% at 10% ED, and REG2000 is 150% at 10% ED; therefore,
you can make your selection using the REG2000's current at 150% in the following tables. In this
example, you can select REG075A23A-21, as the current at 150% of 30 A > total braking current of
28.9 A.
230V Series
Frames A B C
Model REG_ _ _A23A-21 075 110 150 185 220 300 370
Rated Power (kW) 7.5 11 15 18.5 22 30 37
Mains
Input current (A) 20 32 38 49 60 80 100
Input current at 150% 30 48 57 73.5 90 120 150
460V Series
Frames A B C
Model REG_ _ _A43A-21 075 110 150 185 220 300 370 450 550
Rated Power (kW) 7.5 11 15 18.5 22 30 37 45 55
Mains
Input current (A) 10.5 17 20 25 32 43 49 60 75
Input current at 150% 15.8 25.5 30 37.5 48 64.5 73.5 90 112.5
*Please contact Delta if the required current exceeds the units listed above.