Schneider Electric MNA01M001EN 2.3 Braking resistor

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

Ω94 47 20 10

Continuous power internal braking resis-

tor PPR

W 10 20 40 60

Peak energy ECR Ws 82 166 330 550

External braking resistor minimum Ω68 36 20 10

External braking resistor maximum 1) Ω110 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

Evar at nominal voltage 115 V +10%

Ws 30 60 89 119

Energy absorption of internal capacitors

Evar at nominal voltage 200 V +10%

Ws 17 34 52 69

Energy absorption of internal capacitors

Evar 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

Evar at nominal voltage 115 V +10%

Ws 24 48 73 97

Energy absorption of internal capacitors

Evar at nominal voltage 200 V +10%

Ws 12 23 35 46

Energy absorption of internal capacitors

Evar 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

Contents

Main LXM32 Table of contents LXM32 Table of contents Table of contents LXM32 Safety Information Hazard categories DANGER WARNING CAUTION Qualification of personnel Intended use Safety Information LXM32 Basic information DANGER Safety Information LXM32 DC bus voltage measurement DANGER Standards and terminology Page About the book LXM32 About the book Page 1 Introduction LXM32 1 Introduction 1.1 Permissible device types for common DC bus 1 Introduction LXM32 2 Technical Data 2.1 Firmware version 2.2 DC bus data Single-phase drives Three-phase drives 16 Common DC bus 2.3 Braking resistor Common DC bus 17 Three-phase drives 18 Common DC bus 2.3.1 External braking resistors (accessories) Common DC bus 19 2.4 Cables for the DC bus 3 Engineering 3.1 Energy balance 3.1.1 Energy balance basics v D I t 3.2 Electromagnetic compatibility (EMC) 3.4 Fuses 3.4.1 DC bus connection of single-phase drives Page 3.4.2 DC bus connection of three-phase drives Page 3.4.3 Supply via the DC bus Page ~ 3.5 Braking resistors 3.5.1 Rating the braking resistor WARNING 3 Engineering LXM32 Page 3.5.2 Rating information Page 3.6 Mains reactor See the manual of the respective product for information on mains reactors. Common DC bus 37 3.7 Mains filter 3.8 Mains reactor and external mains filter Common DC bus 39 Page 4 Installation Figure 14: Specifications for drives with mains supply 4.1 Assembling cables 42 Common DC bus Page Page 4.2 Wiring the DC bus 4.2.1 Drives with connectors Page 4.2.2 Drives with terminals CN9 4.2.3 Connecting the DC bus 4.3 Verifying installation Page 5 Commissioning LXM32 5 Commissioning 5.1 Commissioning procedure 5.1.1 DC bus connection LXM32 to LXM32 5 Commissioning LXM32 5.1.2 Supply via the DC bus LXM32 5 Commissioning 5.2 LXM32: Setting the braking resistor parameters WARNING 5 Commissioning LXM32 6 Accessories and spare parts 6.1 DC bus accessories 6.2 DC fuses LXM32 6 Accessories and spare parts 6.3 External braking resistors 6 Accessories and spare parts LXM32 Glossary Units and conversion tables Length Mass Force Glossary LXM32 Terms and Abbreviations LXM32 Glossary Page Table of figures LXM32 Table of figures Page Index LXM32 Index Index LXM32