Resistor Installation And Wiring - ABB ACS800-04 Hardware Manual

Combined braking cycles for R7:
Examples
P
br
P or P
br5 br10
P
br30
P
brcont
No braking
• After P , P or P
br5 br10 br30
• P , P or P braking is allowed once every minute.
br5 br10 br30
• After P braking, there has to be a pause of at least 30 seconds without any braking if the subsequent braking power
brcont
is greater than P .
brcont
• After P or P braking, the drive and the chopper will withstand P
br5 br10
• P braking is not acceptable after P
br10
Combined braking cycles for R8:
Examples
P
P , P or P
br5 br10 br30
P
brcont
No braking
• After P , P or P
br5 br10 br30
allowed braking power after P
• P , P or P braking is allowed once every minute.
br5 br10 br30
• After P braking, there has to be a pause of at least 60 seconds without any braking if the subsequent braking power
brcont
is greater than P .
brcont
All braking resistors must be installed outside the converter module. The resistors are built in an IP 00 metal frame. The
2xSAFUR and 4xSAFUR resistors are connected in parallel. Note: The SAFUR resistors are not UL listed.

Resistor installation and wiring

All resistors must be installed outside the drive module in a place where they will
cool.
WARNING! The materials near the brake resistor must be non-flammable. The
surface temperature of the resistor is high. Air flowing from the resistor is of
hundreds of degrees Celsius. Protect the resistor against contact.
max 5 s or 10 s
min. 30 s max 30 s min. 30 s
braking, the drive and the chopper will withstand P
braking.
br5
max 5 s, 10 s or 30 s
br
min. 60 s
braking, the drive and the chopper will withstand P
, P or P .)
br5 br10 br30
max 30 s
min. 30 s
brcont
within a total braking time of 30 seconds.
br30
brcont
continuously.
min. 60 s
continuously. (P is the only
brcont
Resistor braking
113
t
t