Regeneration Resistors; A.1.5 Regeneration Resistors - Baldor MicroFlex Installation Manual

A.1.5 Regeneration resistors

MicroFlex may require an external regeneration resistor to be fitted, using the R1 and R2 pins
of connector X1. The regeneration resistor dissipates energy during braking to prevent an
over-voltage error occurring.
Baldor part number RG39 is recommended (39Ω, 44W). However, if the required dissipation is
greater than this, Baldor part number RG68 may be used, rated at 320W.
Dimensions: mm (inches)
WARNING: 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 brake resistors. Ensure that the resistor has clearance of at least 50mm
(2 in) above and below and 26mm (1 in) left and right.
MN1919
123 (4.3)
Figure 27 - Regeneration resistor RG39 dimensions
45 (1.7)
100
(3.9)
M4
Accessories A-5
90
(3.54)
65 (2.6)