Motion Terminal VTEM. Description. Motion App #02. Proportional directional control valve [ ]

Transcription

1 Motion Terminal VTEM Description Motion App #02 Proportional directional control valve [ ]

2 VTEM Translation of the original instructions VTEM-MA02-EN Firefox is a registered trademark of its respective trademark holder in certain countries. 2 Festo VTEM-MA02-EN

3 VTEM Table of contents 1 About this document Further applicable documents Target group Product version Function Functional description Sensors required Diagnostic messages and error elimination System parameters used Application parameters used Set values Setting the Motion app (app option) Control of the Motion app (app control) Setpoint value 1, setpoint value Return values Status of Motion app (app state) Actual value 1, actual value A Technical Appendix A.1 Technical data Festo VTEM-MA02-EN English 3

4 1 About this document 1 About this document This document describes the function and parameterisation of the Motion app specified on the title page. Relevant information for understanding the function, and the necessary steps and procedure for executing parameterisation, are described in other documents ( 1.1 Further applicable documents). 1.1 Further applicable documents Document Instructions for mounting the Motion Terminal CPX, VTEM (CPX_VTEM) Instructions for use of the Motion Terminal VTEM (VTEM) Description of the Motion Terminal VTEM, function and parameterisation (VTEM) CPX system description (P.BE-CPX-SYS- ) Tab. 1.1 Contents Instructions and important notes on mounting the Motion Terminal VTEM with connected CPX terminal Instructions and important notes on handling, installation, commissioning and maintenance of the Motion Terminal VTEM Detailed description of the Motion Terminal VTEM and the function and parameterisation thereof Information on the complete system of the CPX terminal For all available product documentation 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- VTEM Motion Terminal, from Revision 01 CTMM-S1-C Controller of the VTEM Motion Terminal from Revision 01 Firmware Firmware of the CTMM controller from Version VEVM-S1-27- Valve for VTEM Motion Terminal from Revision 01 CTMM-S1-D-8E-M8-3 Digital input module for VTEM Motion Terminal from Revision 01 CTMM-S1-A-8E-A-M8-4 Analogue input module for VTEM Motion Terminal from Revision 01 Browser Firefox, version 38 or later Tab. 1.2 The product version can be determined in the WebConfig user interface of the Motion Terminal using the page [System] [Information]. 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 ( 4 Festo VTEM-MA02-EN English

5 2 Function 2 Function ID of Motion app Designation of Motion app Pictogram for Motion app 02 Proportional directional control valve Tab. 2.1 In order to operate the Motion app on a valve, the ID of the Motion app must be transmitted using the valve mode of the process data (bits in byte 0 (PDO)) ( Description of the Motion Terminal VTEM, function and parameterisation). 2.1 Functional description Motion App 02 makes it possible to model proportional directional control valves. There are two variants to choose from: 2x 3/3-way and 1x 4/3-way valve function. Using a setpoint value signal of 100 % to +100 %, it is possible to specify both the direction of flow and the degree of opening. With a setpoint value in the region of 0 %, the valve adopts the closed mid-position. The particular valve position is detected and fed back by means of integrated stroke sensors. With the 4/3-way valve type, only the setpoint value for port (2) is specified. The setpoint value of port (4) is transmitted as the inverted setpoint value of port (2) for the 4/3-way valve type. The working ports (2) and (4) can be pressurised or exhausted using a proportional directional control valve function. There are two options for controlling the ports: Joint control of both ports (corresponds to the function of a 4/3-way proportional directional control valve) Flow Fig. 2.1 Festo VTEM-MA02-EN English 5

6 2 Function Separate control of the ports (corresponds to the function of two 3/3-way proportional directional control valves). In additional it is possible to determine whether the two ports are blocked or active (set value status ). Flow Flow Fig Sensors required The Motion app does not need any external sensors. 2.3 Diagnostic messages and error elimination For information about VTEM diagnostic messages and error elimination Description of the Motion Terminal VTEM, function and parameterisation 6 Festo VTEM-MA02-EN English

7 2 Function 2.4 System parameters used None 2.5 Application parameters used Characteristic (2) The parameter specifies the characteristic of the regulator for working port (2). Possible characteristics Precise: The set value for the valve cross section is achieved as accurately as possible; the recovery time is longer. Universal: Balanced relationship between accuracy and recovery time Fast: The set value for the valve cross section is achieved as quickly as possible; the accuracy is lower. ID Meaning Value dec. 220 Regulator characteristic Precise (default) 0 Regulator characteristic Universal 1 Regulator characteristic Fast 2 Tab. 2.2 Characteristic (4) The parameter specifies the characteristic of the regulator for working port (4). Possible characteristics Precise: The set value for the valve cross section is achieved as accurately as possible; the recovery time is longer. Universal: Balanced relationship between accuracy and recovery time Fast: The set value for the valve cross section is achieved as quickly as possible; the accuracy is lower. ID Meaning Value dec. 221 Regulator characteristic Precise (default) 0 Regulator characteristic Universal 1 Regulator characteristic Fast 2 Tab Set values The configuration of the process data is described in the document Description of the Motion Terminal VTEM, function and parameterisation Setting the Motion app (app option) Valve type The valve type is defined using byte 1 (PDO). PDO byte 1 Valve type Value dec. 4/3 (valve positions for port (2) and port (4) are controlled together) /3 (valve positions for port (2) and port (4) can be controlled separately) 15 Tab. 2.4 Festo VTEM-MA02-EN English 7

8 2 Function Control of the Motion app (app control) Activating the proportional directional control valve function The proportional directional control valve function can be activated or deactivated using the control bits in byte 0 (PDO). The 2x 3/3 proportional directional control valves can be operated independently of one another. If the proportional directional control valve function is deactivated, the associated working ports are blocked. A blocked port does not respond to changes in the setpoint values. PDO byte 0 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Possible statuses: Blocked (B) Active (A) Valve type Status Bit 7 Bit 6 Dec. (2) (4) 4/3 B B B B B B A A /3 B B B A A B A A Tab Setpoint value 1, setpoint value 2 Valve position The direction of flow and degree of opening of the proportional directional control valves can be controlled using the setpoint values ( Fig. 2.1 and Fig. 2.2). The two 3/3-way proportional directional control valve functions (2) and (4) are controlled using bytes (PDO) and (PDO). The 4/3-way proportional directional control valve function gets its setpoint value via byte (PDO). Valve type 4/3 PDO byte 5 PDO byte 4 PDO byte 3 PDO byte 2 (2) and (4) Port Value range Digit value Digit range Data type Byte (PDO) (2) and (4) % 0.01 % % 16 bit signed integer 3 2 Tab. 2.6 Valve type 2 3/3 PDO byte 5 PDO byte 4 PDO byte 3 PDO byte 2 (4) (2) Port Value range Digit value Digit range Data type Byte (PDO) (2) % 0.01 % % 16 bit signed integer 3 2 (4) % 0.01 % % 16 bit signed integer 5 4 Tab Festo VTEM-MA02-EN English

9 2 Function 2.7 Return values Status of Motion app (app state) Status of the digital inputs (end position detection) The status of the inputs of the digital input module CTMM-...-D-... that are assigned to the valve currently in use ( Description of the Motion Terminal VTEM, function and parameterisation) is given by bits 2 and 0 in byte 1 (PDI). This status information is only available if proximity sensors are installed in the end positions of the drive. No proximity sensors are required to operate 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 having an uneven number 0 1 (corresponds to the Advanced end position reached position 1) ) Status at the input having an even number (corresponds to the Retracted end position reached position 2) ) 0 1 1) (4) pressurised, (2) exhausted; switching position 14 2) (2) pressurised, (4) exhausted; switching position 12 Tab. 2.8 Warning The presence of warnings in the diagnostic memory of the Motion Terminal is given by 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 0 No warning present. 1 Warning present in the diagnostic memory of the Motion Terminal. Tab. 2.9 For how to deal with warnings and errors Description of the Motion Terminal VTEM, function and parameterisation Festo VTEM-MA02-EN English 9

10 2 Function Actual value 1, actual value 2 Valve position The actual value of the valve position is given by bytes and (PDI). Valve type 4/3 Even if only one setpoint value for port (2) is specified for valve type 4/3 in the Motion App 02, the actual value for port (4) is still fed back. PDI byte 5 PDI byte 4 PDI byte 3 PDI byte 2 Port (4) Port (2) Port Value range Digit value Digit range Data type Byte (PDI) (2) % 0.01 % % 16 bit signed integer 3 2 (4) % 0.01 % % 16 bit signed integer 5 4 Tab Valve type 2x 3/3 PDI byte 5 PDI byte 4 PDI byte 3 PDI byte 2 Port (4) Port (2) Port Value range Digit value Digit range Data type Byte (PDI) (2) % 0.01 % % 16 bit signed integer 3 2 (4) % 0.01 % % 16 bit signed integer 5 4 Tab Festo VTEM-MA02-EN English

11 A Technical Appendix A Technical Appendix A.1 Technical data Characteristic values Linearity under nominal conditions, based on the ideal [%] 2 full scale characteristic curve 1) Repetition accuracy (under nominal conditions) [%] 1.5 full scale Max. hysteresis At 0 60 % of setpoint value [%] 1.5 full scale At % of setpoint value [%] 3 full scale Response sensitivity (smallest setpoint value change, the latest time at which the regulator responds) [%] 1.5 full scale 1) Applies in the range from 5 % 95 % of setpoint value. Tab. A.1 Festo VTEM-MA02-EN English 11

12

13 Copyright: Festo AG & Co. KG Ruiter Straße Esslingen Germany Phone: Fax: Reproduction, distribution or sale of this document or communication of its contents to others without express authorization is prohibited. Offenders will be liable for damages. All rights reserved in the event that a patent, utility model or design patent is registered. service_international@festo.com Internet: