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Resistor braking
113
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.
Combined braking cycles for R7:
• After
P
br5
,
P
br10
or
P
br30
braking, the drive and the chopper will withstand
P
brcont
continuously.
•
P
br5
,
P
br10
or
P
br30
braking is allowed once every minute.
• After
P
brcont
braking, there has to be a pause of at least 30 seconds without any braking if the subsequent braking power
is greater than
P
brcont
.
• After
P
br5
or
P
br10
braking, the drive and the chopper will withstand
P
br30
within a total braking time of 30 seconds.
•
P
br10
braking is not acceptable after
P
br5
braking.
Combined braking cycles for R8:
• After
P
br5
,
P
br10
or
P
br30
braking, the drive and the chopper will withstand
P
brcont
continuously. (
P
brcont
is the only
allowed braking power after
P
br5
,
P
br10
or
P
br30
.)
•
P
br5
,
P
br10
or
P
br30
braking is allowed once every minute.
• After
P
brcont
braking, there has to be a pause of at least 60 seconds without any braking if the subsequent braking power
is greater than
P
brcont
.
P
br
t
P
br5
or
P
br10
P
br30
P
brcont
min. 30 s max 30 s min. 30 s
No braking
Examples
min. 30 s
max 5 s or 10 s
max 30 s
P
br
t
P
br5
,
P
br10
or
P
br30
P
brcont
min. 60 s
No braking
Examples
min. 60 s
max 5 s, 10 s or 30 s
Summary of Contents for ACS800-04
Page 4: ......
Page 12: ...Safety instructions 12 ...
Page 54: ...Planning the electrical installation 54 ...
Page 72: ...Motor control and I O board RMIO 72 ...
Page 116: ...Resistor braking 116 ...
Page 117: ......