Festo VTEM Instrucciones de funcionamiento e instalación

Motion Terminal

VTEM

Description

Motion App #05

Supply and exhaust air

flow control

8071817

2017-12

[8071819]

VTEM

2Festo – VTEM-MA05-EN – 2017-12 –

Translation of the original instructions

VTEM-MA05-EN

Firefox®is a registered trademark of its respective trademark holder in certain countries.

VTEM

Festo – VTEM-MA05-EN – 2017-12 – English 3

Table of contents

1 About this document 4.....................................................................

1.1 Further applicable documents 4..............................................................

1.2 Target group 4............................................................................

1.3 Product version 4.........................................................................

2 Function 5...............................................................................

2.1 Functional description 5....................................................................

2.1.1 Definition of the direction of movement / position of the drive 5.............................

2.1.2 Supply air and exhaust air 5..........................................................

2.1.3 Pressure build-up function 6..........................................................

2.2 Required sensors 6........................................................................

2.3 Diagnostic messages and error elimination 6...................................................

2.4 System parameters used 6..................................................................

2.5 Application parameters used 6...............................................................

2.5.1 Pressure buildup function 6..........................................................

2.6 Default values 6...........................................................................

2.6.1 Setting of the Motion app (app option) 6................................................

2.6.2 Control of the Motion app (app control) 7...............................................

2.6.4 Setpoint value 1 and 2 (setpoint value 1, setpoint value 2) 7................................

2.7 Return values 8...........................................................................

2.7.1 Status of the Motion app (app state) 8.................................................

2.7.4 Actual value 1 and 2 (actual value 1, actual value 2) 8.....................................

A Technical appendix 9......................................................................

A.1 Technical data 9...........................................................................

1 About this document

4Festo – VTEM-MA05-EN – 2017-12 – English

1 About this document

This document describes the function and parameterisation of the Motion App named on the title page. Information

relevant for understanding the function as well as necessary steps and approaches for carrying out parameterisation

are described in other documents (è1.1 Further applicable documents).

1.1 Further applicable documents

Document Contents

Instructions for mounting Motion Terminal CPX, VTEM

(CPX_VTEM)

Instructions and important notes for mounting the

Motion Terminal VTEM with attached CPX terminal

Instructions for use of VTEM Motion Terminal (VTEM) Instructions and important notes on handling,

installation, commissioning and maintenance

of the Motion Terminal VTEM

Description of Motion Terminal VTEM,

function and parameterisation

(VTEM)

Detailed description of the Motion Terminal VTEM

as well as its function and parameterisation

CPX system description

(P.BE-CPX-SYS-…)

Information on the complete system of the CPX terminal

Tab. 1.1

For all available product documentation èwww.festo.com/pk

1.2 Target group

This document is intended for qualified personnel. Experience with electrical and pneumatic control systems is

required in order to understand this documentation.

1.3 Product version

This document refers to the following product versions:

Product Version

VTEM-… Motion Terminal VTEM from Revision 01

CTMM-S1-C Controller of the Motion Terminal VTEM from Revision 01

Firmware Firmware of the CTMM controller from Version 4.0.2

VEVM-S1-27-… Valve for Motion Terminal VTEM from Revision 01

CTMM-S1-D-8E-M8-3 Digital input module for Motion Terminal VTEM from Revision 01

CTMM-S1-A-8E-A-M8-4 Analogue input module for Motion Terminal VTEM from Revision 01

Browser Firefox from Version 38

Tab. 1.2

The product version can be determined using the [System] [Information] page in the WebConfig user interface

of the Motion Terminal.

Note

There may be an updated version of this document for these or later product versions.

 Check whether a corresponding version of this document is available (èwww.festo.com/sp).

2 Function

Festo – VTEM-MA05-EN – 2017-12 – English 5

2 Function

ID of the Motion app Designation of the Motion app Pictogram of the Motion app

05 Supply and exhaust air flow control

Tab. 2.1

The ID of the Motion app must be transferred through the area “operating mode of the valve

(valve mode)” of the process data (bits 5 … 0 in byte 0 (PDO)) to operate the Motion app on a valve

(èDescription of Motion Terminal VTEM, function and parameterisation).

2.1 Functional description

The function of an adjustable exhaust and supply air flow control can be emulated with this Motion app. The flow

control values for the exhaust air and supply air flow control valves can be set separately and independently of each

other. A valve with a low flow rate can be simulated with the supply air flow control valve. The movement speed of

the actuator can be set through the exhaust air flow control valve.

Note

When Motion App 05 is used, all measures must be taken that are also typical for a conventional

exhaust air flow control. In particular, it must be ensured that the corresponding cushioning measures

do not cause the permissible load of the drive in the end position to be exceeded.

2.1.1 Definition of the direction of movement / position of the drive

In this document and on the WebConfig user interface, the direction of movement or position of drives

that are controlled through the Motion Terminal are normally described with the terms “advance” or

“advanced” and “retract” or “retracted”, which refer to piston rod cylinders with a piston rod at one end.

Based on the pneumatic function, the meaning of the terms can be transferred to other drives.

Term Port (4) Port (2) Switching position of the valve

Advance/advanced Pressurised Exhausted 14

Retract/retracted Exhausted Pressurised 12

Tab. 2.2

2.1.2 Supply air and exhaust air

The terms “supply air” and “exhaust air” are not permanently assigned to the service air ports, but refer to

the respectively active motion.

Motion Supply air through port Exhaust air through port

Advancing (4) (2)

Retracting (2) (4)

Tab. 2.3

2 Function

6Festo – VTEM-MA05-EN – 2017-12 – English

2.1.3 Pressure build-up function

When a pneumatic drive hits a chamber that is pressurised with only low pressure (e.g. ambient pressure),

an unexpectedly fast travel speed of the drive can result.

The pressure buildup function avoids this behaviour by checking the pressure in the corresponding chambers.

If the pressure is too low, the chamber is actively pressurised before a travel command is carried out.

Under certain parameters (position of the drive piston, surface area of the drive, etc.), the pressure

buildup function can result in unexpected movements of the drive:

– delayed start of movement

– initially slow movement in the direction of actuation or movement against the direction of actuation

The pressure buildup function (if not deactivated by the user) is normally active only in case of error and

has no effect on normal operation.

2.2 Required sensors

The Motion app does not require any external sensors.

2.3 Diagnostic messages and error elimination

For information on VTEM diagnostic messages and error elimination èDescription of function and

parameterisation for Motion Terminal VTEM

2.4 System parameters used

None

2.5 Application parameters used

2.5.1 Pressure buildup function

Note

If the pressure buildup function is deactivated, very fast movements of the drive can result (conditions

èSection 2.1.3).

ID Status of the function Value of the parameter

222 Active 1

Inactive 0

Tab. 2.4

2.6 Default values

The structure of the process data is described in the description “Function and parameterisation

of Motion Terminal VTEM”.

2.6.1 Setting of the Motion app (app option)

Not used.

2 Function

Festo – VTEM-MA05-EN – 2017-12 – English 7

2.6.2 Control of the Motion app (app control)

2.6.3 Switching status of the service air ports

The switching status at the service air ports (2) and (4) of the valve is controlled with the bits 7 … 6 in byte 0 (PDO).

PDO byte 0

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Function Switching

status

Replacement

symbol1)

Byte 0 Dec.

(4) (2) Bit 7 Bit 6

Stopping blocked G G 0 0 0

Advancing B E 0 1 1

Retracting E B 1 0 2

Exhausting E E 1 1 3

1) The symbol in this column replaces the full bridge in the circuit diagram of the valve VEVM and thus depicts the function in the switched status

of the valve with corresponding setpoint value (right column).

Tab. 2.5

2.6.4 Setpoint value 1 and 2 (setpoint value 1, setpoint value 2)

2.6.5 Throttle setting

The throttle setting can be set in the range from 0.01 … 100 % (è2.1 Functional description).

Throttle settings 5 % are not recommended (accuracy of stroke regulation).

The throttle setting at (4) and (2) is set through the bytes 5 … 4 and 3 … 2 (PDO).

Byte 5 Byte 4 Byte 3 Byte 2

Supply air Exhaust air

Connection Range of values Value of digit Range of digit Data type Byte (PDO)

Exhaust air 0.01 … 100 % 0.01 % 1 … 10000 × 0.01 % 16 bit signed integer 3 … 2

Supply air 0.01 … 100 % 0.01 % 1 … 10000 × 0.01 % 16 bit signed integer 5 … 4

Tab. 2.6

2 Function

8Festo – VTEM-MA05-EN – 2017-12 – English

2.7 Return values

2.7.1 Status of the Motion app (app state)

2.7.2 Status of the digital inputs (end-position detection)

The status of the inputs of the digital input module CTMM-…-D-…, which are assigned to the currently used valve

(èDescription of Motion Terminal VTEM, function and parameterisation), is depicted through the bits 2 and 0 in

byte 1 (PDI).

This status information is available only if proximity sensors are installed in the end positions of the drive.

No proximity sensors are needed for operation of the Motion app.

PDI byte 1

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Position Bit 2 Bit 1 Bit 0

Status at the input with the odd number

(Corresponds to the position “End position advance reached”1))

Status at the input with the even number

(Corresponds to the position “End position retraction achieved”2))

1) (4) pressurised, (2) exhausted; switching position 14

2) (2) pressurised, (4) exhausted; switching position 12

Tab. 2.7

2.7.3 Warning

The presence of warnings in the diagnostic memory of the Motion Terminal is depicted through bit 7 in byte 1 (PDI).

PDI byte 1

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Value Description

0No warnings are present.

1Warning is present in the diagnostic memory of the Motion Terminal.

Tab. 2.8

2.7.4 Actual value 1 and 2 (actual value 1, actual value 2)

2.7.5 Throttle setting

Actual value 1 (exhaust air throttle setting) and actual value 2 (supply air throttle setting) are returned via byte 3…2

and byte 5…4 (PDI).

Byte 5 Byte 4 Byte 3 Byte 2

Supply air Exhaust air

Function Range of values Value of digit Range of digit Data type Byte (PDI)

Exhaust air 0.01 … 100 % 0.01 % 1 … 10000 × 0.1 % 16 bit signed integer 3 … 2

Supply air 0.01 … 100 % 0.01 % 1 … 10000 × 0.1 % 16 bit signed integer 5 … 4

Tab. 2.9

A Technical appendix

Festo – VTEM-MA05-EN – 2017-12 – English 9

A Technical appendix

A.1 Technical data

Not relevant

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