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Festo CMMT-ST-SW User Manual

Festo CMMT-ST-SW
616 pages
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8097136
CMMT-ST-SW
Servo drive
8097136
2019-02
[8097138]
Description| Software,
Function, Fieldbus,
Device profile

Table of Contents

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Festo CMMT-ST-SW Specifications

General IconGeneral
BrandFesto
ModelCMMT-ST-SW
CategoryDC Drives
LanguageEnglish

Summary

About This Document

Applicable Documents

Lists all available documents for the product and user documentation.

Product Version

Specifies the CMMT-ST servo drive and plug-in versions, and firmware package versions.

Safety Instructions

Provides safety instructions for commissioning and operation, emphasizing checking control functions and potential hazards.

Conventions

Explains the conventions used in the document, such as hexadecimal values and marking of parameters.

CMMT-ST Plug-in

Getting to Know the Plug-in

Introduces the CMMT-ST plug-in, its integration into Festo Automation Suite, and its functions.

Interface

Describes the interface of the CMMT-ST plug-in, including contexts, toolbar, and working area.

Working with CMMT-ST the Plug-in

Explains how to open the plug-in, connect to the device, and synchronize data between plug-in and device.

Parameterisation

Details the interface for parameterisation, graphical and tabular displays, and how to enter parameters.

Diagnosis

Covers the interface for diagnosis, device state, I/O state, error log, error classification, and trace configuration.

Control

Explains the interface for control, manual movement, and record list operations.

Integrating a Device in a Festo Controller

Describes how to connect and integrate a device into a Festo controller, including operating modes.

Product Configuration

Controllers

Discusses controller communication interfaces, IP address settings, MAC addresses, and firmware management.

Communication Interfaces

Details IP address configuration, factory settings, Ethernet interface capabilities, and MAC addresses.

Firmware

Explains firmware management, compatibility checks, and firmware download procedures.

Parameter Set

Covers default, factory, user, and project parameter sets, and their behaviour during online connection.

Master Control

Explains master control, determining the interface for motion commands, and how it can be transferred.

Device Services

Details device services executed by methods, such as reset device, and return values for method status and return codes.

Drive Configuration

Guides through selecting and configuring drive components like servo controller, motor, axis, and mounting kit.

Motor Configuration

Explains how to configure motors, including importing data, and parameters for motor cable and encoders.

Encoder Configuration

Covers encoder parameters, configuration of encoder 1 (incremental and BiSS-C), and selection of position control encoder.

Gear Unit

Details parameterisation of gear units, transmission factors, and gear ratio configuration.

Digital Inputs and Outputs

Explains parameterisation of digital inputs and outputs, general settings, and configuration for X1A and X1C connectors.

Protective Functions

Covers protective functions for the device, including I²t monitoring and temperature monitoring.

I²t Monitoring of the Power Output Stage

Describes the protective function to prevent thermal damage to the power output stage by monitoring limit values.

I²t Monitoring of Motor

Explains the simplified thermal motor model used for protecting the connected motor from thermal overload.

Temperature Monitoring of the Servo Drive

Details the protective function for monitoring power module temperature against overtemperature, including warning and upper/lower limits.

System Monitoring

Covers the protective function that monitors the internal system for errors, switching off the power output stage if an error is detected.

Mains and DC Link Monitoring

Explains mains voltage monitoring and DC link voltage monitoring to protect against failures and voltage variations.

Motion Control

Operating Modes

Defines how the device changes operating statuses and the internal finite state machine.

Finite State Machine

Describes the internal finite state machine that defines how operating statuses change, including transitions between states.

Operating Modes for Performing Motion Commands

Lists and describes the different operating modes for performing motion commands: Profile and Cyclic Synchronised.

Positioning Mode (PP)

Explains the positioning profile position operating mode, path curve calculation, and supported position specifications.

Velocity Mode (PV)

Details the velocity mode profile, trajectory calculation based on motion quantities, and supported velocity settings.

Force/Torque Mode (PT) with or without Holding Brake

Describes the force/torque mode, setpoint curve calculation, and supported variants including holding brake.

Cyclic Synchronised Positioning Mode (CSP)

Explains the mode enabling pre-set command values in a fixed time grid, synchronized with the higher-order controller.

Cyclic Synchronised Velocity Mode (CSV)

Covers cyclic synchronised velocity mode, enabling pre-set command values via drive profile (SYNC interval) for synchronized operation.

Cyclic Synchronised Force/Torque Mode (CST)

Details cyclic synchronised force/torque mode, enabling pre-set command values via drive profile (SYNC interval) for synchronized operation.

Stop

Explains the stop command, which aborts the current motion command, with subsequent reactions depending on the trigger.

Hold

Describes the reactions to the hold command, which depends on the active operating mode and can abort or continue the current command.

Homing

Explains the process of homing the drive to approach an absolute, unique position.

Command for Record Selection

Details saving command records in a record table, addressing them by number, and activating them as foreground or background processes.

Record Sequencing

Explains how sequencing multiple records enables specification of command sequences, executed after starting with no further start commands.

Monitoring of Events

Describes the event table for monitoring events parallel to step enabling conditions, branching to a record if an event occurs.

Jog Mode

Explains how the drive can move to any position in jog mode until the command for jogging is pending.

Motion Monitoring

Motion Monitoring Functions

Details motion monitoring functions that monitor the drive system and protect drive components from damage.

Target Window Reached

Explains the function indicating if the target value has been reached, monitoring various target values simultaneously.

Following Error

Describes the monitoring of the difference between setpoint and actual values for position and speed.

Target Area Monitoring

Covers monitoring the drive's movement after reaching the target window, depending on operating mode (position, speed, or torque).

Hardware Limit Switch Reached

Explains how hardware limit switches limit the positioning area and how the drive must be positioned between limit positions.

Software Limit Position Reached

Details how software limit positions control the traversing range and are related to the axis zero point.

Standstill Monitoring

Indicates when the drive is not moving or moving minimally below a threshold value, preventing drifting.

Stop Reached

Explains the monitoring function combining standstill and current monitoring to check if specified limits are reached.

Stroke Limit Reached

Describes the monitoring function for stroke limits, applicable to speed and power operation, contrasting with software limit position monitoring.

Speed Monitoring (Spinning Protection)

Details the monitoring function to detect excessive speeds and prevent drive spinning by stopping.

Pushback Monitoring

Covers monitoring drive movement as a function of specified effective direction of torque, allowing reverse movement below velocity threshold.

Remaining Distance Monitoring

Indicates when the remaining path during ongoing positioning command is below the specified limit value.

Trajectory Completed

Explains the monitoring function indicating when a trajectory (movement) has been completed.

Reference Switch Activated

Indicates when the reference switch is activated, monitoring its status and configuration.

Directional Lock

Describes the function that blocks drive movement in one or both directions, triggered automatically by exceeding software limits or hardware switches.

Control

Cascade Controller

Explains the cascade controller's basic structure consisting of position, velocity, and current regulators.

Position Controller

Details the P-controller design for calculating velocity specifications from control difference and the use of dead zone members.

Velocity Control

Describes the PI controller for calculating torque specifications and its interaction with current regulators.

Current Regulator

Explains the current regulator comprising active and reactive current regulators for secondary power output stages.

Control Parameter Sets

Covers active, and 3 additional control parameter sets for parameterisation, including inertia and filter time constants.

Limitations

Discusses limitations on setpoint specifications for the trajectory generator, affected by active set table or profile mode.

Limitation of Application

Explains how application limitations define setpoint specifications, comparing movement variables with limitations.

Control Limitation

Details the cascade controller's limitations for velocity and torque setpoints, composed of static and dynamic data.

Torque Limitation

Explains how torque limitation limits torque related to the drive output shaft, converting user specifications to resulting torque.

Pilot Control (Setpoint Value Control)

Describes pilot control creating setpoint values for the cascade controller, improving positioning behavior and reducing errors.

Notch Filter

Explains the use of internal notch filters to suppress oscillations and filter interfering frequencies from the active current.

Auto Tuning

Covers using auto tuning to determine control parameters for position and velocity controllers based on measurements.

Technology Functions

Cam Controller (Position Trigger)

Describes the cam controller generating trigger signals at parameterised positions, usable for position switch simulation.

Position Detection (Touch Probe)

Explains how the device detects current positions during command processing using trigger signals at CAP input.

Open-Loop Operation

Details actuation with constant currents, suitable for low speeds, and possible with or without an encoder.

Field Weakening

Explains field weakening for synchronous motors to reach higher rotational speeds by reducing negative field voltage.

Safety Signals

Function

Describes continuous monitoring of feedback signals for STO safety sub-function, triggering messages and fault responses.

Diagnostics and Fault Clearance

Diagnostics Options

Outlines comprehensive diagnostics options via LEDs, commissioning software, web server, and fieldbus.

Classification of Diagnostic Events

Explains how devices issue messages and react based on parameterised severity of diagnostic events.

Diagnostic Status

Details how the device determines diagnostic status from active messages, represented as a bit mask.

Servo Drive Messages

Lists possible statuses for messages: Active, Cancelled, and Acknowledged.

Status of Messages

Explains the meaning of message statuses (Active, Cancelled, Acknowledged) and how messages remain active or are cancelled/acknowledged.

Structure of Messages

Describes the uniform design of messages including ID, name, status, classification, and time stamp.

Message Directory

Explains how messages are stored in a volatile directory, sorted by severity and time, accessed via plug-in.

Error Memory

Describes the non-volatile ring memory for storing messages traceable at a later date, with FIFO principle.

Acknowledging Messages and Errors

Outlines how acknowledging messages changes their status and how errors are handled.

Diagnostic Messages with Information for Fault Clearance

Provides a reference list for diagnostic messages, including ID, message, description, remedy, classification, and error memory.

Recording Measuring Data (Trace)

Details the process of recording all device data in the parameter directory, including selecting values, sampling interval, and trigger configuration.

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