Dynamic brake resistor considerations – Rockwell Automation 20D PowerFlex 700S Phase II Drive Frames 1...6 Installation Instructions User Manual
Page 42
42
Rockwell Automation Publication 20D-IN024C-EN-P - July 2013
PowerFlex 700S Adjustable Frequency AC Drive - Phase II Control
Dynamic Brake Resistor Considerations
Figure 16 - External Brake Resistor Circuitry
Terminal
Description
Notes
BR1
DC Brake (+)
Dynamic Brake Resistor Connection (+)
BR2
DC Brake (–)
Dynamic Brake Resistor Connection (–)
DC+
DC Bus (+)
DC Input Power or Dynamic Brake Chopper
DC–
DC Bus (–)
DC Input Power or Dynamic Brake Chopper
PE
PE Ground
on page
for location on 3 Frame drives
Motor Ground
on page
for location on 3 Frame drives
U
U (T1)
To motor
V
V (T2)
To motor
W
W (T3)
To motor
R
R (L1)
AC Line Input Power
S
S (L2)
AC Line Input Power
T
T (L3)
AC Line Input Power
ATTENTION: The drive does not offer protection for externally mounted brake
resistors. A risk of fire exists if external braking resistors are not protected.
External resistor packages must be self-protected from over temperature or a
circuit equivalent to the one shown below must be supplied.
Power On
R (L1)
S (L2)
T (L3)
Power Source
DB Resistor Thermostat
Power Off
M
M
(Input Contactor) M
Three-Phase
AC Input