2121 Norman Drive South
Publication #
eng02.027MCD
Waukegan, IL 60085
7/26/2002
(847) 887-7000
Page 1 of 3
ENGINEERING PUBLICATION
MOTION CONTROL DIVISION
PRODUCT: LEGEND SGDG
SUBJECT: EXTERNAL REGEN
CATEGORY: APPLICATION NOTES
ENGINEER: Bill Leang
DISTRIBUTION: All
Summary
:
The Legend SGDG-01GT and SGDG-04GT needs special attention when
external regen resistor is required in the application. The JUSP-RG08D external regen
unit should be used with SGDG-01GT. The SGDG-04GTY22P must be used with two
RH500N25_ohmK external resistors. The JUSP-RG08D can also be used with the
standard SGDG-04GT.
The SGDG-01GT does not have the regen transistor built-in even though there are
terminals for connecting an external regen resistor. Therefore, for external regen
requirement, the JUSP-RG08D external regen unit must be used. This is the regen unit
designed for SGDA amplifiers. This unit connects directly across the DC bus. It is a self-
contain unit consisting of bus sensing circuitry, switching IGBT, 50 ohm power resistor,
and alarm relay contacts. The regen capacity of this unit is 60W before derating. The
convection cool capacity is 12W. Capacity increases to 30W with forced-air cooling.
The following is the dimension and specifications of the JUSP-RG08D:
