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3.6 Regeneration resistor (Dynamic Brake resistor)

An optional external regeneration resistor may be required to dissipate excess power from the internal DC bus during motor deceleration. The regeneration resistor must have a resistance of at least 39Ω, an inductance of less than 100µH, and a minimum power rating of 44W. Suitable regeneration resistors are listed in section A.1.4. The regeneration resistor output is conditionally short-circuit proof.

Regeneration

resistor

Connect outer shield

to resistor body

 

Earth/ground outer

 

shield, using 360°

 

conductive clamp

 

connected to

STAR

enclosure backplane

POINT

 

Figure 11 - Regeneration resistor connections

DANGER: Electrical shock hazard. DC bus voltages may be present at these terminals. A regeneration resistor may generate enough heat to ignite combustible materials. To avoid fire hazard, keep all combustible materials and flammable vapors away from the resistor.

MN1942

Basic Installation 3-23

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Image 37
Baldor E100 manual Regeneration resistor Dynamic Brake resistor, Regeneration resistor connections