Baldor Flex+DriveII - A.1.7 Regeneration Resistors

Accessories A-7MN1902
A.1.7 Regeneration resistors
Some FlexDrive
II
models (2.5A and 5A) are fitted with an internal regeneration resistor (see
sections 2.2.1 and 7.1.5). 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.
FlexDri
v
e
II
115VAC
1Φ m odels
230VAC
1Φ m odels
230VAC
3Φ m odels
230-460VAC
3Φ m odels
F
l
e
x
D
r
i
v
e
current
rating
Baldor
catalog
no.
Power
rating
(W)
Baldor
catalog
no.
Power
rating
(W)
Baldor
catalog
no.
Power
rating
(W)
Baldor
catalog
no.
Power
rating
(W)
2.5A
(
I
n
t
e
r
n
a
l
)
(
I
n
t
e
r
n
a
l
)
(
I
n
t
e
r
n
a
l
)
5A
(
I
n
t
erna
l
)
(
I
n
t
erna
l
)
(
I
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t
erna
l
)
7.5A RG22 100 RG39 100 RG68 320
15A RG10 320 RG27A 320*
20A RG27A 320*
27.5A RG11 640
*Note: Where the required dissipation could exceed 320W resistor RG23, rated at 640W,
can be used instead.
65 (2.6)
90
(3.54)
123 (4.3) for 44 watts
228 (8.9) for 100 watts
337 (13.2) for 320/640 watt
100
(3.9)
M4
45 (1.7)
L
L=
Dimensions: mm (inches)
Figure 42 - Regene ration resistor dimensions, a ll types
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.