www.baldormotion.com
3-40 Basic Installation
MN1943
3.9.4 Resistor choice
P
av
is the value to use when assessing which regeneration resistor to use. However, a safety
margin of 1.25 times is recommended to ensure the resistor operates well within its limits*, so:
Required resistor power rating
=
1.25
×
P
av
=
________________ W (watts)
The range of suitable regeneration resistors for each MotiFlex
e
100 model is shown in Table 6.
Choose the resistor that has a power rating equal to or greater than the value calculated above.
The resistance must be not be less than the minimum resistance stated for the particular
MotiFlex
e
100 model.
MotiFlex
e
100
Minimum resistance
Suitable resistors
MotiFlex
e
100
catalog
number
Single stand-alone
drive
Sharing DC bus,
or duty > 0.2
Suitable resistors
(spec = Baldor part)
MFE460A001
60
Ω
, 100 W = RGJ160
60
Ω
, 200 W = RGJ260
MFE460A003
60
Ω
150
Ω
60
Ω
, 200 W = RGJ260
60
Ω
, 300 W = RGJ360
150
Ω
, 100 W = RGJ1150
Ω
G
MFE460A006
150
Ω
, 100 W
RGJ1150
150
Ω
, 200 W = RGJ2150
150
Ω
, 300 W = RGJ3150
MFE460A010
33
Ω
68
Ω
33
Ω
, 500 W = RGJ533
MFE460A016
33
Ω
68
Ω
33
Ω
, 500 W = RGJ533
68
Ω
, 300 W = RGJ368
MFE460A021
MFE460A026
15
Ω
60
Ω
15
Ω
, 500 W = RGJ515
60
Ω
, 300 W = RGJ360
MFE460A033
60
Ω
, 300 W = RGJ360
MFE460A048
7 5
Ω
33
Ω
10
Ω
, 1.2 kW = RGA1210
10
Ω
2 4 kW = RGA2410
MFE460A065
7.5
Ω
33
Ω
10
Ω
, 2.4 kW = RGA2410
10
Ω
, 4.8 kW = RGA4810
Table 6 - Regeneration resistors
*
The regeneration resistors listed in Table 6 can withstand a brief overload of 10 times the rated
power for 5 seconds.
Note that a greater minimum resistance is specified when sharing the DC bus or using
regeneration duty cycles greater than 0.2. This is because the drive to which the resistor is
connected will be required to switch the regeneration energy from all of the shared drives. The
shared drives could regenerate at different times, causing a greatly increased effective duty cycle
(see section 3.9.7). Alternatively, several drives could regenerate at the same time, causing large
peaks in regeneration energy. The greater minimum resistance allows for this extra loading and
provides protection for the host drive’s regeneration output circuitry.
Optionally, additional regeneration resistors may be connected to other drives in the group. Since
all MotiFlex
e
100 drives have approximately the same regeneration threshold voltage,
regeneration energy in the system will be shared proportionally (according to resistance) between
all drives fitted with a regeneration resistor. Each resistor must still meet the
Sharing DC bus or
duty > 0.2
requirement, listed in Table 6, for the drive to which it is fitted.
Summary of Contents for MotiFlex e100
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Page 60: ...www baldormotion com 3 44 Basic Installation MN1943 ...
Page 102: ...www baldormotion com 5 28 Input Output MN1943 ...
Page 136: ...www baldormotion com 7 8 Troubleshooting MN1943 ...
Page 172: ...www baldormotion com 8 36 Specifications MN1943 ...
Page 188: ...www baldormotion com B 6 Control System MN1943 ...
Page 204: ...www baldormotion com C 16 Mint Keyword Summary MN1943 ...
Page 216: ...Index MN1943 ...
Page 218: ...www baldormotion com Comments MN1943 Thank you for taking the time to help us ...
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