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2.3 Braking resistor
LXM32 drives have an internal braking resistor and a connection for
an external braking resistor. If the internal braking resistor is insuffi-
cient for the dynamics of the application, one or more external braking
resistors must be connected.
Single-phase drives
LXM32∙... U45M2 U90M2 D18M2 D30M2
Resistance value of internal braking
resistor
Ω
94 47 20 10
Continuous power internal braking resis-
tor P
PR
W 10 20 40 60
Peak energy E
CR
Ws 82 166 330 550
External braking resistor minimum
Ω
68 36 20 10
External braking resistor maximum
1)
Ω
110 55 27 16
Maximum continuous power external
braking resistor
W 200 400 600 800
Capacitance of internal capacitor μF 390 780 1170 1560
Parameter DCbus_compat = 0 (default value)
Switch-on voltage braking resistor V 430 430 430 430
Energy absorption of internal capacitors
E
var
at nominal voltage 115 V +10%
Ws 30 60 89 119
Energy absorption of internal capacitors
E
var
at nominal voltage 200 V +10%
Ws 17 34 52 69
Energy absorption of internal capacitors
E
var
at nominal voltage 230 V +10%
Ws 11 22 33 44
Parameter DCbus_compat = 1 (reduced switch-on voltage)
Switch-on voltage braking resistor V 395 395 395 395
Energy absorption of internal capacitors
E
var
at nominal voltage 115 V +10%
Ws 24 48 73 97
Energy absorption of internal capacitors
E
var
at nominal voltage 200 V +10%
Ws 12 23 35 46
Energy absorption of internal capacitors
E
var
at nominal voltage 230 V +10%
Ws 5 11 16 22
1) The maximum specified braking resistor can derate the peak power of the device. Depending on the application, it is possible to use
a higher ohm resistor.
LXM32
2 Technical Data
Common DC bus
17
MNA01M001EN, V1.01, 08.2014