Definitions - ABB ACS880-104 Hardware Manual
Industrial drives, inverter modules
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Also See for ACS880-104:
- Hardware manual (404 pages) ,
- Firmware instructions (664 pages) ,
- Firmware manual (604 pages)
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336 Resistor braking using frames R1i...R4i inverter modules
Definitions
P
Maximum continuous braking power. The braking is considered continuous if the braking time exceeds
brcont
30 seconds.
P
Maximum braking power of the inverter module and its internal brake chopper. The inverter and
brmax
chopper will withstand this braking power for 1 second within every 10 seconds.
Note:
The listed resistors will withstand this braking power for 1 second within every 120 seconds.
R
Minimum allowed resistance of the brake resistor.
min
R
Resistance of the listed resistor.
P
Continuous power (heat) dissipation of the listed resistor when placed correctly.
n
E
Short energy pulse that the listed resistor will withstand every 400 seconds.
R
The ratings apply at an ambient temperature of 40 °C (104 °F).
The listed brake resistors are protected to IP20. Refer to
dimensions, wire sizes and tightening torques for the resistors.
Resistor dimensions (page 337)
for
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