Schneider LXM32MD72N4 Servo Drive

LXM32: Lexium32 series servo

M: Multi-fieldbus version (CANopen supported, built-in encoder acquisition and positioning function)

D72: Peak output current 72A, continuous 24A

N4: 3-phase high-voltage model, 208~480VAC 3-phase power supply

Core Electrical Specifications

Communication & I/O

1. Fieldbus: CANopen (LXM32M model, different from pulse-type LXM32A)
2. Digital: Multiple 24VDC discrete inputs including 2 high-speed capture CAP ports; digital outputs
3. Encoder Interface: Supports SinCos and EnDat, compatible with BSH/BMH servo motors
4. Interfaces: RJ45 debug port, detachable color-coded terminals for convenient cabinet wiring and maintenance

Matching Motors

Compatible with BSH / BMH 400V class servo motors of Lexium32 series. Typical match: 140-flange BSH high-torque motor, continuous torque up to 27.8N·m, peak 90.2N·m, common speed 3000rpm.

Application Scenarios

Packaging machinery, machine tool feed axes, CNC cutting, textile machinery, material handling conveying, multi-axis synchronization equipment; suitable for automated production lines requiring CANopen bus multi-axis linkage and high dynamic positioning.

Installation & Environment

Book-style cabinet mounting, vertical installation on control cabinet DIN rail

Overvoltage category: Class III

Max leakage current: 30mA

Recommended wire gauge for power terminals: 3mm², tightening torque 0.5N·m

Fault & Commissioning Notes

1. Common Alarms: Overcurrent OC, Overvoltage OV, Undervoltage UV, Encoder Fault, Overheat OH
2. Commissioning Software: SoMove, supports online parameter configuration, oscilloscope sampling and automatic inertia tuning
3. For high-power working conditions, it is recommended to install an external 1mH line reactor to reduce harmonics and incoming current surges

Replacement & Selection Remarks

Pulse version of the same series: LXM32AD72N4 (no CANopen, pulse-direction control)

Upgrade alternative: Schneider Lexium28 series; comparable competitors: Siemens V90, Mitsubishi MR-J4

Note: LXM32 is a discontinued legacy series. Lexium28 is preferred for new projects; stock or second-hand units are available only for spare part projects.

HS Code Reference

85011099 (servo drive, re-verify customs classification before customs declaration)

LXM32MD72N4 SoMove Power-on Commissioning Parameter Template

Applicable: Lexium32M 7kW CANopen bus servo, matched with BSH/BMH 400V motors; SoMove software, expert mode password 696969

Pre-operation: Complete hardware wiring including power cable, encoder, emergency stop, brake, CAN bus and 24V control power supply; perform no-load jog test first, then auto-tune under load; save parameters to EEPROM after modification.

1. Basic Configuration (Simply Start Wizard Page)

2. Axis Limit Parameters (Axis Configuration → Limitations)

3. I/O & Safety Parameters (Axis Configuration → IO)

4. Position Scaling (Scaling, Core for Positioning Projects)

User units per revolution, example: 10mm per revolution for lead screw, modify as required

| Parameter Name | Parameter ID | Example Value | Description |

| —| —| —| —|

| Position Numerator | ScalePOSnum | 10 | Numerator of travel per revolution |

| Position Denominator | ScalePOSdenom | 1 | Denominator; example: 10mm/rev → 10/1 |

| Velocity Scaling | ScaleVELnum / ScaleVELdenom | Follow position | Velocity unit: mm/s |

| Acceleration Scaling | ScaleACCnum / ScaleACCdenom | Follow position | Acceleration unit: mm/s² |

Raw encoder resolution: 16384count/rev for SinCos motors

5. Servo Loop Gains (Tuning Page, No-load → On-load Auto-tune)

Prioritize SoMove automatic inertia identification + auto-tune, then fine tune

| Parameter Name | Parameter ID | Initial Recommendation | Tuning Logic |

| —| —| —| —|

| Position Loop Gain | CTRL_Kp_pos | 3~8 | Higher for stiff mechanics; reduce if oscillation occurs |

| Speed Loop Gain | CTRL_Kp_vel | 80~150 | Base response, reduce for mechanical resonance |

| Speed Loop Integral Time | CTRL_Ti_vel | 8~20ms | Smaller value improves steady-state error, prone to oscillation |

| Velocity Feedforward | CTRL_Kff_vel | 0.6~0.9 | Reduce position following error |

| Acceleration Feedforward | CTRL_Kff_acc | 0~0.3 | For high-speed start-stop; large value causes impact |

| Low-pass Filter | CTRL_FiltVel | 500~1000Hz | Suppress resonance; lower filter frequency at resonance point |

6. CANopen Fieldbus Parameters (Key for LXM32M)

7. Homing Parameters

8. Monitoring & Fault Log

Fault Buffer: Stores latest 16 alarms for troubleshooting of OV/OC/OH/ENC faults

Oscilloscope: Sample target position, actual position, following error, bus voltage, motor current for resonance and tuning analysis

Save: Device → User Functions → Save parameters to EEPROM; back up local project as .cxm file

Complete Power-on Commissioning Procedure (Matching Parameter Template)

1. Connect PC to drive RJ45 debug port via SoMove, establish communication and read factory parameters
2. Run Simply Start wizard, select motor model and confirm encoder type
3. Configure limit, brake and I/O terminal definition
4. Set position scaling and mechanical transmission ratio
5. Set CANopen Node ID, baud rate and configure PDO
6. No-load test: Enable, jog, verify rotation direction, limit and brake logic
7. On-load test: Run Auto-tune inertia identification to generate base gains
8. Observe following error and oscillation via oscilloscope, fine-tune 3-loop gains and filter
9. Homing test, point positioning test, acceleration/deceleration test
10. Save parameters to EEPROM and export .cxm backup file

Commissioning Precautions

1. Expert mode password 696969, enter expert mode to modify advanced parameters
2. Auto-tune must be performed with actual load; parameters tuned under no-load easily oscillate under load
3. Incorrect brake timing will directly cause axis falling; test brake function without load during first commissioning
4. CANopen bus: Enable terminal resistor only at the first and last device on bus, disable for intermediate nodes
5. For high-power LXM32MD72N4, check wiring of line reactor and braking resistor before first power-up

Optional Extended Parameters

Braking Resistor: BRK_R, BRK_P for external braking resistor resistance/power rating, bus overvoltage protection

Analog Input: AI scaling for analog speed mode (not commonly used for CANopen projects)

Schneider Lexium32 (LXM32) Full Series Drive Model List

3 main branches: LXM32C (Basic Analog) / LXM32A (Pulse + Modbus) / LXM32M (CANopen bus type, LXM32MD72N4 belongs to this branch)

Suffix explanation:

M2: Single-phase 200~240VAC; N4: 3-phase 208~480VAC

Dxx: Number after D = peak current (A), continuous current = 1/3 of peak current

Status: Full series discontinued, only available on spare parts market

1. LXM32M (CANopen Bus Type, High Priority, includes LXM32MD72N4)

Single-phase 200~240V (Suffix M2)

3-phase 208~480V (Suffix N4, your series)

2. LXM32A (Pulse/Direction + Modbus, no CANopen, same power rating)

Single-phase M2

LXM32AD12M2, LXM32AD18M2, LXM32AD30M2, LXM32AD42M2, LXM32AD57M2

3-phase N4

LXM32AD12N4, LXM32AD18N4, LXM32AD30N4, LXM32AD42N4, LXM32AD57N4, LXM32AD72N4, LXM32AD85N4

3. LXM32C (±10V analog basic model, speed/current control only, no positioning)

Single-phase M2

LXM32CD12M2, LXM32CD18M2, LXM32CD30M2, LXM32CD42M2, LXM32CD57M2

3-phase N4

LXM32CD12N4, LXM32CD18N4, LXM32CD30N4, LXM32CD42N4, LXM32CD57N4, LXM32CD72N4, LXM32CD85N4

4. Matching Motor Series (BSH / BMH for Lexium32)
5. BSH Motors: SinCos encoder, single-turn/multi-turn, IP50; flange sizes 55/70/100/140mm
6. BMH Motors: EnDat absolute encoder, multi-turn, IP65; flange sizes 55/70/100/140/190mm
7. Accessory List (General for LXM32)

VW3M8101: Braking resistor

VW3M8D10: Encoder battery box (for EnDat multi-turn BMH motors)

VW3M8102: Line reactor

VW3M8200: Pre-made I/O terminal cable

VW3M8300: CANopen bus cable

VW3M8400: Motor power cable

VW3M8500: Encoder cable

Branch Comparison Overview

Selection Tips:

1. Same Dxx model: LXM32A and LXM32M have identical hardware power rating, differ only in firmware communication functions
2. LXM32MD85N4 is the largest model in this series, 9kW
3. New project replacement: Lexium28 series; only stock/second-hand units available for spare part projects.