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BasicInstallation 3-23MN1942
3.6 Regeneration resistor (Dynamic Brake resistor)Anopt ional external regeneration resistor may be required to dissipate exc ess power from the
internalDC busduring motor deceleration. The regeneration resistor must have a resistance of
atleas t 39Ω, an inductance of less than 100µH, and a minimum power rating of 44W. Suitable
regenerationresistor s are listed in section A.1.4. The regeneration resis toroutput isconditionally
short-circuit proof.
Regeneration
resistor
STAR
POINT
Earth/groundouter
shield,using 360°
conductiveclamp
connectedto
enclosurebackplane
Connectouter shield
toresistor body
Figure11 - Regeneration resistor connections
DANGER: Electrical shoc k hazard. DC bus voltages may be present at these
terminals. A regeneration resistor may generate enough heat to ignit e
combustible materials. Toavoid fire haz ard, keep all combustible materials
andflammable vapor s away from the resistor.