PacDrive 3 Lexium 52 Braking resistor

PacDrive 3 Lexium 52 Braking resistor

Internal braking resistor
A braking resistor is built into the servo drive to absorb the braking energy. If the DC bus voltage in the servo drive exceeds a specified value, this braking resistor is activated. The recovered energy is converted into heat by the braking resistor. This enables maximum transient braking torque.
External braking resistor
When the servo motor has to be braked frequently, use of an external braking resistor is recommended to dissipate the excess braking energy. In such a case, the internal braking resistor should be deactivated. Several external braking resistors can be connected in parallel. The servo drive monitors the power dissipated in the braking resistor.
The degree of protection provided by the casing is

  • IP65 for VW3A7601R●● to VW3A7608●● braking resistors
  • IP20 for VW3A770●●braking resistors

The operating temperature around the unit can be between 0 and + 50 °C.  To optimise the size of the braking resistor, the DC buses on Lexium 52 servo drives within the same installation can be connected in parallel.

Applications

  • Machines with high inertia
  • Driving heavy loads
  • Machines with fast cycles
Designation Ohmic
value		Continuous
power PPr		Peak energy EPK Length of
connection
cable		Reference Weight
   115 V 230 V 380 V 480 V     
 OhmW Ws Ws Ws Ws m ft  kg lb
Braking resistors for
Lexium 52 servo drives
– IP20		10100036500365002250022500– – VW3A7705 1124.251
 15100043100431002650026500– – VW3A7704 1124.251
Braking resistors for
Lexium 52 servo drives
– IP65		104001880013300730077000.752.461VW3A7601R07 1.423.131
 1040018800133007300770026.562VW3A7601R20 1.473.241
 1040018800133007300770039.843VW3A7601R30 1.623.571
 2710042003800190017000.752.461VW3A7602R07 0.631.389
 27100420038001900170026.562VW3A7602R20 0.781.72
 27100420038001900170039.843VW3A7602R30 0.91.984
 2720097007400490043000.752.461VW3A7603R07 0.932.05
 27200970074004900430026.562VW3A7603R20 1.082.381
 27200970074004900430039.843VW3A7603R30 1.22.646
 27400255001810011400105000.752.461VW3A7604R07 1.423.131
 274002550018100114001050026.562VW3A7604R20 1.473.241
 274002550018100114001050039.843VW3A7604R30 1.623.571
 7210055003700250023000.752.461VW3A7605R07 0.621.367
 72100550037002500230026.562VW3A7605R20 0.751.653
 72100550037002500230039.843VW3A7605R30 0.851.874
 72200146009600660060000.752.461VW3A7606R07 0.932.05
 722001460096006600600026.562VW3A7606R20 1.082.381
 722001460096006600600039.843VW3A7606R30 1.22.646
 72400366002470016200155000.752.461VW3A7607R07 1.423.131
 724003660024700162001550026.562VW3A7607R20 1.473.146
 724003660024700162001550039.843VW3A7607R30 1.623.571
 10010044004400290029000.752.461VW3A7608R07 0.410.904
 100100440044002900290026.562VW3A7608R20 0.561.235
 100100440044002900290039.843VW3A7608R30 0.761.676
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