Regeneration Resistors - Baldor FDH1A05TB-EN20 Installation Manual

A.1.9 Regeneration resistors
Some FlexDrive
sections 2.2.1 and 8.1.5). Additional (external) regeneration resistors can be fitted to these
models using the R1 and R2 pins of connector X1/X1A. Resistors connected in this way will
be in parallel with the internal resistor.
If an internal resistor is not present, a regeneration resistor should be installed to dissipate
energy during braking to prevent an over-voltage error occurring.
FlexDrive FlexDrive
current
rating
2.5A
5A
7.5A
15A
20A
27.5A
Note: Where the required dissipation could exceed 320W resistor RG23, rated at 640W,
L=
WARNING: A regeneration resistor may generate enough heat to ignite combustible materials.
MN1902
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II
models (2.5A and 5A) are fitted with an internal regeneration resistor (see
115VAC
1Φ models
II
Baldor Power
catalog rating
no. (W)
(Internal) (Internal)
RG22 100
can be used instead.
L
123 (4.3) for 44 watts
228 (8.9) for 100 watts
337 (13.2) for 320/640 watt
Dimensions: mm (inches)
Figure 49 - Regeneration resistor dimensions, all types
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. Baldor regeneration
resistors are neither internally fused nor thermally protected and, under extreme
conditions, can cause a fire hazard if not suitably protected or rated for the
application.
230VAC
1Φ models
Baldor Power Baldor
catalog rating catalog
no. (W)
(Internal) (Internal)
RG39 100
RG10
M4
www.baldormotion.com
230VAC 230-460VAC
3Φ models 3Φ models
Power Baldor
rating catalog
no. (W) no.
RG68
320 RG27A
RG27A
RG11
45 (1.7)
100
(3.9)
Accessories A-9
Power
rating
(W)
(Internal) (Internal)
320
320*
320*
640
90
(3.54)
65 (2.6)