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Production lines

Textile

Hold tension, feed and take-up in sync as line speed changes.

  • Typical axes3
  • NetworkEtherCAT
  • Control modeCST · CSV · CSP
  • Recommended seriesSDU3 · SM10 · SD24-LP · SMR
01
The sector at a glance

Textile

Continuous-duty endurance and stable low-speed torque are decisive.

Three things that decide it on the shop floor

  1. 01

    Tension control

    As the roll diameter changes, the torque reference has to follow.

  2. 02

    Sync through speed changes

    Every roller must keep its ratio through acceleration and deceleration.

  3. 03

    Continuous duty

    Motor RMS torque must stay below the continuous rated torque.

02
Our advantages

Why SMB TECHNICS?

One set, controller to cable

Controller, drive, motor, cable and connector arrive checked against each other; interface problems are solved at the desk, not on the shop floor.

Open standards

EtherCAT, CANopen, Modbus RTU, CODESYS and CiA 402: your machine is not tied to a closed ecosystem.

Engineer-to-engineer support

The same team from sizing to commissioning, on site and remotely.

Documented products

Manuals, CAD, ESI/EDS and firmware in the Document Centre; every product you choose comes with its documents.

Our application know-how for this sector
  • Tension (torque) control with diameter calculation
  • Electronic gearing ratioed to line speed
  • Traverse profile and bobbin geometry
03
How we build the system

From control chain to commissioning, which product goes where

3.1

The control chain and the recommended products

How the machine is driven and the SMB products we choose for it.

Textile machinery — winders, warpers, knitting and weaving lines — needs coordinated servo axes to hold tension, feed rate and take-up speed in sync as material properties and line speed change. Continuous-duty operation and stable low-speed torque matter as much as top-end dynamic response.

An industrial background that knows continuous-running lines first-hand underpins SMB TECHNICS' experience with tension and synchronization on textile axes.

The control chain

Textile machinery is a tension problem wearing a motion problem's clothes. The web has to arrive at every roller at the speed that keeps tension constant while the roll diameter changes underneath you, so the drives run as a coordinated group rather than as independent axes: SD-LP and SDU3 drives on SM08 to SM13 motors, with inductive and photoelectric sensors closing the loop on break detection and edge position, and shielded encoder cabling that survives a machine hall full of neighbours.

What decides the result

  • Diameter compensation. Constant surface speed against a changing roll is the whole job; it is a control law, not a motor rating.
  • Low-speed smoothness. Torque ripple that nobody would notice on a conveyor shows up in the cloth. This is a feedback-resolution question, and the catalogue's 17-bit BiSS options exist for it.
  • Electrical noise. Long motor runs in a shared hall are where encoder cable specification stops being a detail.

Sizing it

We need web width and material, line speed, the minimum and maximum roll diameters, and the tension you have to hold. The selection guide narrows the drive range; tell us the machine's existing fieldbus and whether the line must keep running through a single drive fault.

Select the products for this machine Enter power, torque and network; compare compatible drives and motors and add them to your basket. Selection guide
3.2

The architecture: which product goes where

The boxes show the real products; click one to open the series.

  • EtherCAT
  • Ethernet
  • Power and feedback
  • Safety
Where this machine sits on the full SMB system map
CPU / PLC & Motion Control 3 series Expansion Rack / IO 10 products Ethernet switch Ethernet Operator Panels 3 series Sensors 3 series EtherCAT Servo Drives 17 products CANopen Servo Drives 6 products Modbus RTU Servo Drives 4 products Servo Motors 6 series Power and Encoder Cables 2 series CODESYS IEC 61131-3 PLCopen Motion Control CiA 402 Drive profile
EtherCAT Ethernet CANopen Modbus RTU Digital I/O Power and feedback

CPU / PLC & Motion Control

Expansion Rack / IO

Ethernet switch

The industrial switch distributes Ethernet traffic between the controller, the operator panel and the engineering PC. It is part of the architecture, not part of the SMB catalogue.

Operator Panels

Sensors

EtherCAT Servo Drives

CANopen Servo Drives

Modbus RTU Servo Drives

Servo Motors

Power and Encoder Cables

CODESYS

SMB controllers are programmed in CODESYS: the IEC 61131-3 languages, integrated motion and a single project covering both machine logic and the axes.

PLCopen

PLCopen Motion Control function blocks give every axis the same standard interface, so proven machine code carries over from one project to the next.

CiA 402

SMB servo drives implement the CiA 402 drive profile: the same state machine and the same operating modes over EtherCAT and over CANopen.

3.3

Product placement, axis by axis

Each axis, its task, its control mode and the drive–motor pair on it.

  1. 01
    Unwind / rewind Constant tension at a changing diameter
    CST · EtherCAT
  2. 02
    Draw rollers Synchronous speed ratioed to the line
    CSV · EtherCAT
  3. 03
    Traverse Laying the yarn evenly across the bobbin
    CSP · EtherCAT

CSP: cyclic synchronous position · CSV: cyclic synchronous velocity · CST: cyclic synchronous torque · PP: profile position. The series is confirmed by load and supply voltage.

3.4

The build, step by step

From requirement to support; the SMB products and tools each step uses.

  1. 1

    Requirements and sizing

    The motion profile, load and cycle time of every axis are collected; torque, speed and inertia ratio are calculated per axis.

    • Peak and RMS torque, top speed
    • Load-to-motor inertia ratio and gearing
    • Supply: 220 V AC, 380 V AC or 24–70 V DC
  2. 2

    Architecture and product choice

    The network (EtherCAT, CANopen, Modbus RTU), the controller and the drive–motor pair per axis are chosen; the safety and power side is drawn at this step.

    • EtherCAT for synchronised axes, CANopen for independent ones
    • Drive current covers the motor peak current
    • STO and braked motors come from the risk assessment
  3. 3

    Cabinet, cabling and EMC

    Power and encoder cables run in separate ducts with their shields bonded 360°; an EMI filter goes at the drive input and a braking resistor where the load regenerates.

    • Flexible cable for the cable chain
    • Shields are earthed at both ends
    • The braking resistor is sized from the braking energy
  4. 4

    Software and network

    In the CODESYS project the axes are defined with PLCopen blocks; the drives join the network through their ESI/EDS files and run the CiA 402 state machine.

    • IEC 61131-3 languages and PLCopen Motion Control
    • ESI (EtherCAT) and EDS (CANopen) in the Document Centre
    • EtherCAT coupler for remote I/O
  5. 5

    Commissioning and tuning

    After wiring and direction checks the gains are tuned and the axes homed; the operator panel carries the machine recipes.

    • Direction, limit and emergency-stop tests
    • Speed and position loop gain tuning
    • Backing up the parameter sets
  6. 6

    Support and lifecycle

    Alarm codes, spare parts, firmware and training, from the same engineering team.

    • Alarm-code and troubleshooting guides
    • Manual, CAD and firmware downloads
    • Remote and on-site support
3.5

The solution package: what comes with the product

Hardware, software, engineering and lifecycle.

02

Software and know-how

The CODESYS project, PLCopen motion blocks and know-how specific to this machine.

  • Tension (torque) control with diameter calculation
  • Electronic gearing ratioed to line speed
  • Traverse profile and bobbin geometry
03

Engineering support

Sizing, architecture, commissioning and tuning, on site and remotely.

  • Motor and drive sizing per axis
  • System architecture and network choice
  • Commissioning, gain tuning and homing
04

Lifecycle

Manuals, ESI/EDS files, spare parts and training.

  • Document Centre: manuals, CAD, firmware
  • ESI and EDS files, parameter backups
  • Spare parts and user training
Engineering knowledge base

Commissioning this application

The topics engineers in this industry ask about most, each with answers, checklists and troubleshooting steps.

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