Vacuum generator. Operating instructions b [ ]

Transcription

1 Vacuum generator OVEM- -LK en Operating instructions b [ ]

2 Original instructions OVEM- -LK-DE Identification of hazards and instructions on how to prevent them: Warning Hazards that can cause death or serious injuries Other symbols: Note Material damage or loss of function Recommendations, tips, references to other documentation Text designations: Activities that may be carried out in any order 1. Activities that should be carried out in the order stated General lists Result of an action/references to more detailed information 2 Festo OVEM- -LK b

3 1 About this document Product description Structure Characteristics Safety Use for intended purpose General safety information Range of applications and certifications Function and application Function overview Switching functions Valve control Air-saving function Monitoring and diagnostics Measured variables Teach function (Teach-In) Data storage (Data Storage) Block parameterisation Parameter description General instructions, IO-Link Identification parameters Process data (Process data) Smart Sensor profile parameters (Smart Sensor Profile Parameters) Device parameters (Device Parameters) Observation parameters (Observation Parameters) Diagnostics (Diagnosis) Device commands (Device Commands) Installation Mechanical Pneumatic Electrical Commissioning Commissioning vacuum generator Adjusting intensity of the ejection pulse Festo OVEM- -LK b English 3

4 8 Operation Operating manual override Restore factory settings Activating security code Error messages and fault clearance Status messages Diagnostic levels Error messages and error codes Malfunctions Disassembly Maintenance and care Technical data Appendix Graphic display and LCD displays Operating statuses and menu structure Meaning of symbols for representing the menu structure RUN mode SHOW mode Edit mode Teach mode Festo OVEM- -LK b English

5 1 About this document This document describes the use of the above mentioned product. All available documents for the product 2 Product description 2.1 Structure ab aa 7 aj Ejector pulse solenoid valve (Eject) 2 Vacuum solenoid valve 3 Mechanical manual override of the solenoid valves 4 Supply port (1) 5 Exhaust port / silencer (3) 6 Vacuum connection (2) 7 Housing with mounting holes Fig. 1 Control sections and connections 8 Slide for changing the filter element 9 Filter housing with inspection window aj Flow control screw for adjusting the ejector pulse aa Vacuum sensor with LCD display and operating keys Fig. 13 ab Electrical connection Festo OVEM- -LK b English 5

6 2.2 Characteristics Characteristic Code Meaning Vacuum generator OVEM Vacuum generator with vacuum solenoid valve ON/OFF and electric manual override Nominal width of laval nozzle mm mm mm mm mm Vacuum type -H High vacuum -L High suction volume Housing size / width -B 20 mm wide, ISO standard Pneumatic ports -QS All ports with QS push-in fittings -QO Supply / vacuum port with QS push-in fittings, exhaust port with open silencer -GN All ports with G female thread -GO Supply / vacuum port with G female thread, exhaust port with open silencer -PL Prepared for manifold rail, vacuum and exhaust port with QS push-in fittings -PO Prepared for manifold rail / vacuum port with QS push-in fittings, exhaust port with open silencer Normal position of the vacuum -OE NO, normally open (vacuum generation) with ejector pulse generator -CE NC, normally closed (no vacuum generation) with ejector pulse Electrical connection -N Plug M12 (5-pin) Vacuum sensor -LK IO-Link Alternative vacuum display - Bar -H InHg Tab. 1 Overview of variants 6 Festo OVEM- -LK b English

7 3 Safety 3.1 Use for intended purpose The vacuum generator type OVEM-...LK is designed for generating a vacuum. 3.2 General safety information The product may only be used in its original status without unauthorised modifications. Only use the product if it is in an excellent technical status. Use the product only inside buildings. Take into consideration the operating conditions at the location of use. The product is intended for use in industrial environments. The product can generate high frequency interference, which may make it necessary to implement interference suppression measures in residential areas. Observe the specifications on the product labelling. Comply with all applicable national and international regulations. Observe the local specifications for environmentally friendly disposal. Festo OVEM- -LK b English 7

8 3.3 Range of applications and certifications Note CE Declaration of Conformity In connection with the UL marking on the product, the information of this section is also applicable for compliance with the certification conditions of Underwriters Laboratories Inc. (UL) for the U.S.A. and Canada. UL approval information Product category code QUYX (USA) QUYX7 (Canada) File number E Considered standards UL C22.2 No UL mark Tab. 2 UL approval information Unit shall be supplied by a power source which complies with the requirements of a limited-energy circuit in accordance with IEC/EN/UL/CSA or a Limited Power Source (LPS) in accordance with IEC/EN/UL/CSA or IEC/EN/UL/CSA or a Class 2 circuit in accordance with NEC or CEC. 8 Festo OVEM- -LK b English

9 4 Function and application 4.1 Function overview The OVEM-LK is a vacuum nozzle with digital transmission of setpoint and actual value as well as diagnostics and parameterisation options. Communication takes place in the IO-Link mode. SIO mode is supported. IO-Link parameters and functions in accordance with Smart-Sensor profiles Chapter 5. 2 binary data channels for programming switching functions and switching behaviour. SIO mode: Local configuration via the operating keys. In the SIO mode, OVEM has the function of a 2P variant (1 switching input, 2 switching outputs). Functions: Control of the compressed air supply with 2 valve functions Chapter 4.3 Auto-Drop function: generation of an automatic eject pulse for accelerated vacuum purging and safe set-down Chapter 4.3 Air-saving function Chapter 4.4 Electrical and mechanical manual override Chapter 8.1 Monitoring of vacuum build-up through integrated pressure sensor. If the setpoint value is reached, or if it is not reached due to malfunctions (e.g. leakage, dropped workpiece), the vacuum generator emits an electrical signal and a status message. Prevention of vacuum purging through internal check valve if vacuum generation is interrupted. Data storage and expanded monitoring function. Festo OVEM- -LK b English 9

10 4.2 Switching functions The binary outputs can be configured via the switching functions. The switching status information is thereby made available at the electric port as a process value or binary signal. IO-Link mode: 3 BDC (binary data channels), bit 0: BDC1 or BDC2, bit 1: BDC3 Chapter 5.3 SIO mode: 2 switching outputs Out A and Out B The switching logic of the binary outputs can be configured as normally open (NO) or normally closed (NC). The switching mode of the binary outputs can be determined as threshold value or window comparator. Threshold value comparator Normally open (NO) Normally closed (NC) Switching function 1 Switchpoint (SP1) Teach mode 1) : 2 Teach-in points (TP1, TP2) SP1 = ½ (TP1+TP2) OUT 1 0 1) TP1 = smaller pressure value, TP2= larger pressure value, independent of the Teach sequence Tab. 3 Threshold value comparator: setting of switchpoint SP1 and hysteresis HY HY TP1 SP1 TP2 p OUT 1 0 HY TP1 SP1 TP2 p Window comparator Normally open (NO) Normally closed (NC) Switching function: OUT OUT 2 switchpoints (SP1, SP2) 1 HY HY 1 HY HY Teach mode 1) : 2 Teach-in points (TP1, TP2) 0 TP1=SP1 TP2=SP2 p 0 TP1=SP2 TP2=SP2 p 1) TP1 = smaller value, TP2 = larger value, independent of the Teach sequence Tab. 4 Window comparator: setting of switchpoints SP1, SP2 and hysteresis HY 10 Festo OVEM- -LK b English

11 4.3 Valve control Depending on the input signal, the vacuum solenoid valve or the ejector pulse solenoid valve is controlled. IO-Link mode: 2 BCS (binary control signals), bit 0: BDC1, bit 1: BDC2 Chapter 5.3 SIO mode: 1 switching input DI1 (Z BCS1). Switching input positive switching (PNP) Auto-drop function: The ejector pulse is generated after the signal change Suction (BCS1). The pulse length can be set through the parameter Auto-Drop time Tab. 11. Valve function OVEM-...-CE Auto-drop active Auto-drop inactive Auto-Drop t ab Auto-Drop t ab 5 Valve function OVEM-...-OE Auto-drop active Auto-drop inactive Auto-Drop t ab Auto-Drop t ab 5 1 Control signal BCS1 / switching input DI1 2 Control signal BCS2 3 Vacuum solenoid valve switching status Fig. 2 Valve control switching behaviour 4 Ejector pulse solenoid valve switching status 5 Vacuum connection (2) t ab Duration of ejector pulse Festo OVEM- -LK b English 11

12 4.4 Air-saving function The air-saving function reduces air consumption during the evacuation phase. 50 mbar (fixed) t BCS1/DI1 BDC1 t t 1 Hysteresis (HY) 2 Threshold value Switch off suction = switchpoint (SP1) 3 Threshold value Switch on suction 4 Reset point (RSP1) Fig. 3 Mode of operation of the air-saving function If the pressure value has reached the switchpoint SP1 2, vacuum generation is deactivated. A an internal check valve prevents the reduction of the vacuum. Vacuum can still be reduced slowly due to leakage in the overall system (e.g. due to rough workpiece surfaces). To reduce energy consumption, vacuum generation is not switched on until the lower threshold value 3 is fallen below. This procedure runs as long as the control signal is present at BCS1/DI1. The air saving function is activated in the factory. 4.5 Monitoring and diagnostics The vacuum generator has monitoring functions that permit early detection of malfunctions or errors in ongoing operation. Monitoring of process parameters (pressure value at the vacuum connection, limit values of binary data channels, evacuation time t E, air supply time t B ). Error detection and diagnostic messages Chapter 9 The monitoring functions are activated at the factory (except for monitoring of the evacuation and air supply times). The time monitoring can be activated through setting of the limit values SP1 (evacuation time) and SP2 (air supply time) in BDC4 Tab. 10. The switching status information of the BDC4 is not included in the process input data (Process data IN). 12 Festo OVEM- -LK b English

13 4.6 Measured variables Pressure value (vacuum) The pressure value (vacuum) is continuously measured between the vacuum connection and filter. The minimum and maximum measured pressure values are saved. If the operating voltage of the vacuum generator is switched off, these values are reset. Cycle time A cycle covers the time from the start of evacuation through ejection to the start of the new evacuation. Evacuation time and air supply time The evacuation time t E is measured from the start of evacuation until reaching of the switchpoint SP1 by BDC1 or BDC2. The air supply time t B is measured from the start of air supply to the time at which the pressure value (vacuum) falls below 50 mbar. p Cycle time 1 50 mbar 0 2 t t E Transport time t B Return time BCS1/DI BDC1 or BDC2 / Out A Vacuum valve Ejector pulse valve 1 Switchpoint SP1 (BDC1 or BDC2) t E 2 Reset point RSP1 (BDC1 or BDC2) t B Fig. 4 Clock cycle (example for Out A (Air-save)) Evacuation time Air supply time Festo OVEM- -LK b English 13

14 4.7 Teach function (Teach-In) The Teach function permits configuring the switchpoints and time monitoring during run time. Static Teach-In Depending on the teach command, one switchpoint (SP) or 2 switchpoints (SP1, SP2) are determined from 2 teach-in points. The switchpoints are determined statically, that is, the measurement value remains constant during the entire Teach-In procedure. During execution of the Teach-In procedure, the air save function is deactivated for the duration of the procedure. Teach commands Tab. 16 Simplified Teach commands BDCx Start (Teach Start), BDCx Stop (Teach Stop) can be used independently of the switching function. The sequence of the teach-in points must be taken into account. For all commands, first the desired channel must be selected. Dynamic Teach-In Setpoint values are calculated within the Teach-In procedure from a time period. The procedure is used for determination of evacuation and air supply times Fig. 5. After the start of the Teach-In, the time t E and t B is measured at each cycle. With multiple cycle times, the times are averaged. After the stop of the Teach-In, a function reserve of 100 % is added to the averaged values. p SP1 50 mbar Teach Start t E1 1 tb1 2 t E2 t B2 Teach Stop t Vacuum valve t 1 Transport time 2 Return time Fig. 5 Dynamic mode of operation Teach-In 3 Cycle time 1 4 Cycle time 2 5 Cycle time N 14 Festo OVEM- -LK b English

15 4.8 Data storage (Data Storage) The data storage mechanism (DS) permits consistent and updated saving of device parameters to higher levels, such as PLC programs or fieldbuses. Changes of the parameters are messaged by the vacuum generator to the IO-Link Master, which then fetches the parameter, saves it in a higher-level system and makes it available to the new device if the vacuum generator is replaced. Parameters that can be saved Chapter 5 The data storage mechanism is supported at the device, but is administered by the application (IO-Link master). 4.9 Block parameterisation Block parameterisation permits uniform access to parameters over multiple indexes or subindexes as well as transfer of entire parameter sets. Transfer of block parameters through start and end commands Tab. 16 During transfer, parameter changes (e.g. through Teach-In) are blocked. In case of an invalid parameter set, the changed parameters are discarded and the previous parameter set is reactivated. Festo OVEM- -LK b English 15

16 5 Parameter description Note Related device description file (IODD) For detailed information on the IO-Link specification and for the Smart Sensor Profil General instructions, IO-Link Characteristic Specification Protocol version Device V1.1 Profile Smart Sensor Profile Function classes Tab. 10 Communication mode COM2 (38.4 kbaud) Port class A Process data width IN 2 bytes Tab. 8 Process data content IN 2 bit BDC (pressure monitoring), 14 bit PDV (pressure measurement value) Process data width OUT 1 byte Tab. 9 Process data content OUT 1 bit (vacuum ON/OFF), 1 bit (ejector pulse ON/OFF) Block parameterisation Supported Data memory required 0.5 KB Minimum cycle time 3.5 ms SIO mode support Yes Tab. 5 General instructions (general IO-Link specification) 5.2 Identification parameters Identification direct parameters (Identification Direct Parameters) Index Name Value Description Information 0x07 VendorID1 (MSB) 0x01 Manufacturer identification R 0x08 VendorID2 (LSB) 0x4D 0x09 DeviceID1 (MSB) 0x00 Device identification 0x0A DeviceID2 0x00 0x0B DeviceID3 (LSB) 3C Device variant OVEM-...-H-...-OE 3D Device variant OVEM-...-L-...-OE 3E Device variant OVEM-...-H-...-CE 3F Device variant OVEM-...-L-...-CE 1) R = read Tab. 6 Identification direct parameters (Identification Direct Parameters) 16 Festo OVEM- -LK b English

17 Identification device parameters (Identification Device Parameters) Index Subindex Name Value Description Information 0x Vendor Name Festo AG & Co. KG Manufacturer name R 0x Vendor Text Includes additional information 0x Product Name e.g. OVEM-05-H-B-QO- CE-N-LK Complete order code of the product 0x Product ID e.g. OVEM-H-CE Device variant/type designation 0x Product Text Vacuum generator Device characteristic 0x Serial Number XXXXXXXXXXX Product key 0x Hardware Revision 0x Firmware Revision 0x Application SpecificTag e.g REV00101 e.g. V Part number and revision status of the product Firmware version of the device *** Application-specific marking, can serve as functional identification. 1) R = read, R/W = read and write, FR = factory reset (Factory Reset), DS = data storage (Data Storage) possible Tab. 7 Identification device parameters (Identification Device Parameters) R/W FR DS 5.3 Process data (Process data) Process input data (Process data IN) Bit 15 (MSB) 2 (LSB) 1 0 Process data 1) Process Data Variable (PDV) BDC3 BDC1/BDC2 2) Data content 1) Pressure Value 3) Out B Out A (Air-save) / Out A 1) R = read 2) Assignment of the BDC is dependent on the parameter Air-saving function: Air-save ON = BDC1, Air-save OFF = BDC2 3) Current pressure value (pressure value) standardised and scaled to 14 bit. Formula: p2 = pressure value*(1000 mbar/16383) Tab. 8 Process input data (Process data IN) Process output data (Process data OUT) Bit Process Data 1) Reserved BCS2 2) BCS1 3) Data content 1) Reserved Drop Vacuum 1) W = write, no data storage (Data Storage) 2) Values: BCS2 = 0: ejector pulse solenoid valve not switched, BCS2 = 1: ejector pulse solenoid valve switched 3) Values: BCS1 = 0: vacuum solenoid valve not switched, BCS1 = 1: vacuum solenoid valve switched Tab. 9 Process output data (Process data OUT) Festo OVEM- -LK b English 17

18 5.4 Smart Sensor profile parameters (Smart Sensor Profile Parameters) Index Name Value Description Length (byte) 0x000D 0 Profile List of profile identifiers 12 R 1 Characteristic 0x0001 Smart Sensor Profile 2 2 0x8000 Device Identifikation 2 3 0x8001 Binary data channel (BDC) 2 4 0x8002 Process data variable (PDV) 2 5 0x8003 Diagnostics 2 6 0x8004 Teach channel 2 0x000E 0 PD Input Data structure of the process input data 6 1 Descriptor 0x BDC1, BDC x020E02 Process data variable (pressure) 3 0x000F 0 PD Output Data structure of the process output data 3 1 Descriptor 0x BCS1, BCS2 3 0x003A 0 Teach-In channel 0x003B 0 Teach-In Status 1 Teach flag TP2 for SP2 2 Teach flag TP1 for SP2 3 Teach flag TP2 for SP1 4 Teach flag TP1 for SP1 0 Standard value; BDC1 with activated air-saving function (Air-save = ON); BDC2 with deactivated air-saving function (Air-save = OFF) 1 BDC1 (Out A Air-save) 2 BDC2 (Out A) 3 BDC3 (Out B) 4 BDC4 (Monitoring of evacuation time/air supply time) 0 Current status of the activated Teach-In channel 0 Teach point TP2 for SP2 not taken over 1 Teach point TP2 for SP2 taken over 0 Teach point TP1 for SP2 not taken over 1 Teach point TP1 for SP2 taken over 0 Teach point TP2 for SP1 not taken over 1 Teach point TP2 for SP1 taken over 0 Teach point TP1 for SP1 not taken over 1 Teach point TP1 for SP1 taken over 5 Teach state Current status of the Teach-In 1) R = read, W = write, R/W = read and write, DR = device restart (Device Reset) DS = data storage (Data Storage) possible Subindex Information 1) 1 R/W DR DS 1 R DR 18 Festo OVEM- -LK b English

19 Index Name Value Description Length (byte) Subindex Information 1) BDC1 - Out A (Air-save) air-saving function (Air-saving function) 0x003C 0 Setpoint SP (0-1 bar) Lower switchpoint Standard values: OVEM-...-L: 6553 (-0.4 bar) OVEM-...-H: (-0.7 bar) 1 Setpoint SP2 0 Upper switchpoint Standard value: 0 0x003D 1 Switchpoint logic 2 Switchpoint mode 3 Switchpoint hysteresis (0-0.9 bar) BDC2 - Out A 0x003E 0 Setpoint SP (0-1 bar) 1 Setpoint SP (0-1 bar) 0x003F 1 Switchpoint logic 2 Switchpoint mode 3 Switchpoint hysteresis (0-0.9 bar) Switchpoint logic 1 0 NO (Standard) 1 Switchpoint logic NC Switchpoint mode 1 1 Single point mode (Standard) 2 Window mode Hysteresis value Standard value: 4096 (0.25 bar) Lower switchpoint Standard values: OVEM-...-L: 6553 (-0.4 bar) OVEM-...-H: (-0.7 bar) Upper switchpoint Standard values: OVEM-...-L: (-0.67 bar) OVEM-...-H: (-0.97 bar) Switchpoint logic 1 0 NO (Standard) 1 NC Switchpoint mode 1 1 Single point mode (Standard) 2 Window mode Hysteresis value Standard value: OVEM-...-L: 1638 (0.1 bar) OVEM-...-H: 4096 (0.25 bar) 1) R/W = read and write, FR = restore factory settings (Factory Reset), DS = data storage (Data Storage) possible 2 R/W FR DS R/W FR DS 2 2 Festo OVEM- -LK b English 19

20 Index Name Value Description Length (byte) BDC3 - Out B 0x Setpoint SP (0-1 bar) 1 Setpoint SP (0-1 bar) 0x Switchpoint logic 2 Switchpoint mode 3 Switchpoint hysteresis 0x Setpoint SP1 (evacuation timeout) 1 Setpoint SP2 (ventilation timeout) (0-0.9 bar) Lower switchpoint Standard values: OVEM-...-L: 3227 (-0.2 bar) OVEM-...-H: (-0.5 bar) Upper switchpoint Standard values: OVEM-...-L: 6717 (-0.41 bar) OVEM-...-H: (-0.71 bar) Switchpoint logic 1 0 NO (Standard) 1 NC Switchpoint mode 1 1 Single point mode (Standard) 2 Window mode Hysteresis value Standard values: OVEM-...-L: 1638 (0.1 bar) OVEM-...-H: 3227 (0.2 bar) Subindex Information 1) 2 R/W FR DS BDC4 - Evacuation time t E and air supply time t B (Time monitoring evacuation/ventilation) Evacuation time limit value t 2) E ( ms) Standard: 0 0x Switchpoint logic 0x Switchpoint mode 3 Switchpoint hysteresis ( ms) Air supply time limit value t B 2) Standard: 0 Switchpoint logic of the 1 diagnostic output 1/2 0 NO (Standard) 1 NC 128 Switchpoint mode BDC4 3) 1 Standard value: Hysteresis value R/W FR DS 1) R/W = read and write, FR = restore factory settings (Factory Reset), DS = data storage (Data Storage) possible 2) Time = 2.5 ms * Value 3) Value = 128: vendor specific. Five measurements are recorded; if the limit is exceeded 3 times, an event is created as a warning Tab. 10 Smart Sensor Profile Parameter - (Smart Sensor Profile Parameters) 2 20 Festo OVEM- -LK b English

21 5.5 Device parameters (Device Parameters) Index Subindex Name Bit Value Description Information 1) 0x000C 0 Device Access Lock 0x01E2 0 Air-saving function 0x011F 0 Pin-2 configuration 0x Pin-2 switchpoint logic Controls the blocking function of the device 0 0 (Write) access to parameters unblocked 1 (Write) access to parameters blocked 1 0 Data storage (DS) unblocked 1 Data storage (DS) blocked 2 0 Local parameterisation unblocked 1 Local parameterisation blocked 3 0 Local user interface unblocked 1 Local user interface blocked 0 Air-saving function is deactivated. Switching status of BDC2 (Out A) is output in Process data IN. 1 Air saving function is activated (standard). Switching status of BDC1 (Out A Air-save) is output to Process data IN. 1 Switching status of BDC3 is output to pin 2 (standard) 5 Switching status of the diagnostic message channel 1 (di1) is output to pin 2. 6 Switching status of the diagnostic message channel 2 (di2) is output to pin 2. 0 Switchpoint logic of pin 2 - NO (standard) 1 Switchpoint logic of pin 2 - NC 0x01EA 0 Lock Code 0 Local parameterisation is enabled (standard) 1 Local parameterisation is blocked through security code (max. 9999) 0x Auto-Drop time 0 Auto-Drop inactive (40 ms 10 s) Length of the automatic ejector pulse 2) ; Standard: 80 (200 ms) R/W FR DS 1) R/W = read and write, FR = restore factory settings (Factory Reset), DS = data storage (Data Storage) possible 2) Length of the automatic ejector pulse = 2.5 ms * Value Tab. 11 Device parameters (Device Parameters) Festo OVEM- -LK b English 21

22 5.6 Observation parameters (Observation Parameters) Index Subindex Name Value Description Information 1) Process data (Process data) 0x Process data input Includes the last valid process input data; standard: 0 1 Process data input BDC3 status 0 BDC3 inactive 1 BDC3 active 2 Process data input BDC1/BDC2 status 2) 0 BDC1 or BDC2 inactive 1 BDC1 or BDC2 active 3 Process data input Pressure value (0 1 bar) Last valid pressure value 0x Process data output 0 3 Includes the last valid process output data; standard: 0 2 Process data output BCS1 3 Process data output BCS2 Run-time parameters (Run Time Parameters) 0x Minimum process value 0x Maximum process value 0 Vacuum solenoid valve not switched 1 Vacuum solenoid valve switched 0 Ejector pulse solenoid valve not switched 1 Ejector pulse solenoid valve switched (0 mbar 1 bar) (0 mbar 1 bar) 0x Last process value (0 mbar 1 bar) 0x Minimum evacuation time 0x Maximum evacuation time (0 10 s) (0 10 s) 0x Last evacuation time (0 10 s) 0x Minimum ventilation time (0 10 s) Minimum measured pressure value as process value Maximum measured pressure value as process value Last measured pressure value as process value Minimum measured evacuation time t 3) E Maximum measured evacuation time t 3) E Last measured evacuation time t 3) E Minimum measured air supply time t 3) B R DR R DR 1) R = read, DR = device restart (Device Reset) 2) With activated air-saving function (Air-saving function = ON), the status of the BDC1 is output With deactivated air-saving function (Air-saving function = OFF), the status of the BDC2 is output 3) Time = 2.5 ms * Value 22 Festo OVEM- -LK b English

23 0x Maximum ventilation time (0 10 s) 0x Last ventilation time (0 10 s) Description Maximum measured air supply time t 3) B Last measured air supply time t 3) B Information 1) R DR 1) R = read, DR = device restart (Device Reset) 2) With activated air-saving function (Air-saving function = ON), the status of the BDC1 is output With deactivated air-saving function (Air-saving function = OFF), the status of the BDC2 is output 3) Time = 2.5 ms * Value Tab. 12 Observation parameters (Observation Parameters) 5.7 Diagnostics (Diagnosis) General diagnostic parameters Index Index Subindex Name Value Run-time parameters (Run Time Parameters) Subindex Name Value Description Information 1) 0x Error count 0 Number of errors (device status 3) since the device was switched on or reset 0x Device status 0 Device is working correctly (standard) 1 Maintenance required 2 Device outside specification 3 4 Function test or failure 0x Detailed device 0 Detailed device status Tab. 14 status 0x Supply voltage 7864 (24 V) Current power supply to the device as process value R DR 1) R = read, DR = device restart (Device Reset) 2) Voltage value = 50 V * value/16283 Tab. 13 General diagnostic parameters (Diagnosis) Festo OVEM- -LK b English 23

24 Detailed device status (Detailed Device Status, Event Codes) Name Event Code Description Subindex Information 1) 1 Device failure 0x5000 Hardware errors in the device R 2 Supply fault 0x5100 General errors in power supply DR F 3 Temperature over-run 0x4210 Device temperature exceeded R DR W 4 Pin-4 overload 0x1815 Overload at plug, pin 4 5 Pin-2 overload 0x1816 Overload at plug pin 2 6 Evacuation solenoid failure 7 Ventilation solenoid failure 8 Evacuation time over-run 9 Evacuation time explicit over-run 10 Ventilation time over-run 11 Ventilation time explicit over-run 12 Air-save max. frequency 13 Vacuum low level 14 Supply voltage over-run 15 Supply voltage under-run 0x1820 0x1821 0x1822 0x1823 0x1824 0x1825 0x1826 0x1827 0x5110 0x5111 Vacuum solenoid valve defective Solenoid valve, ejector pulse defective Evacuation time t E exceeded 3 times out of 5 measurements Evacuation time t E exceeded 3 times out of 5 measurements by at least twice the value Evacuation time t B exceeded 3 times out of 5 measurements Evacuation time t B exceeded 3 times out of 5 measurements by at least twice the value Max. switching frequency of the air-saving function exceeded, air-saving function deactivated SP1 at BDC1/BDC2 not reached after 10 s RSP1 fallen below at BDC1/BDC2 SP2 at BDC2 exceeded Supply voltage too high Supply voltage too low 16 Air-save failure 0x182A BDC1 outside the min. limit value, air-save function deactivated 1) R = read, DR = device restart (Device Reset) F = event type fault, W = event type warning Tab. 14 Index 0x0025: detailed device status (Detailed Device Status, Event Codes) 24 Festo OVEM- -LK b English

25 5.8 Device commands (Device Commands) System commands (System Commands) Index Subindex Name Description Information 0x System Command System command, is sent with a command code Tab. 16 W 1) W = write Tab. 15 System commands (System Commands) Command Name Description code (hex) 0x00 Reserved 0x01 ParamUploadStart Start of the parameter upload 0x02 ParamUploadEnd Stopping of the parameter upload 0x03 ParamDownloadStart Start of the parameter download 0x04 ParamDownloadEnd Stopping of the parameter download 0x05 ParamDownloadStore Complete parameterisation and start data storage 0x06 ParamBreak Termination of all Param commands 0x41 SP1 Single Value Teach Determines the teachpoint TP1 for the switching point SP1 for the respective BDCx in the window comparator 0x42 SP2 Single Value Teach Determines the teachpoint TP1 for the switching point SP2 for the respective BDCx in the window comparator 0x43 SP1 Two Value Teach TP1 Determines the teachpoint TP1 for the switching point SP1 for the respective BDCx in the threshold comparator 0x44 SP1 Two Value Teach TP2 Determines the teachpoint TP2 for the switching point SP1 for the respective BDCx in the threshold comparator 0x4B BDCx Teach Start Starting of the Teach-In sequency for the respective BDCx 0x4C BDCx Teach Stop Stopping the Teach-In sequence for the respective BDCx 0x4F Teach Cancel Termination of a Teach-In smaller sequences 0x80 Device Reset Warm start of the device, resetting of the run-time parameters 0x82 Restore factory settings Resetting the configuration and the parameter to the original condition (default values) Tab. 16 Command code (Command Code) Festo OVEM- -LK b English 25

26 6 Installation 6.1 Mechanical Note An unfavourable mounting position can impair the function of the product. Install the vacuum generator so that no condensation from the compressed air lines can gather in the device. Install the vacuum generator so that it cannot be heated above the maximum permissible operating temperature (plan for convection possibilities). Install the vacuum generator so that the exhaust can flow without hindrance. Direct mounting M5 / M4 Tab. 17 Max. 2.5 Nm M3 Max. 0.8 Nm Fig. 6 Direct mounting on the side Fig. 7 Direct mounting on the back OVEM OVEM / -07/ -10 OVEM / -20 Mounting screws M5 M4 Tab. 17 Size of the mounting screws with direct mounting on the side 26 Festo OVEM- -LK b English

27 Mounting on H-rail H-rail mounting accessory M3 Max. 0.8 Nm Mount H-rail mounting Hang OVEM with H-rail mounting in the H-rail and press in the direction of the arrow Secure with screw 1 to the H-rail. Fig. 8 H-rail mounting Mounting via mounting bracket Accessories for mounting bracket M5 / M4 Tab. 17 Max. 2.5 Nm Fig. 9 Mounting with mounting bracket Mounting on supply manifold Mounting is possible on a supply manifold with a maximum of 8 places (Assembly instructions OABM-P Festo OVEM- -LK b English 27

28 6.2 Pneumatic OVEM-...-CE Circuit symbol OVEM-...-OE Circuit symbol OVEM-...-QO-CE OVEM-...-GO-CE OVEM-...-QO-OE OVEM-...-GO-OE OVEM-...-QS-CE OVEM-...-GN-CE OVEM-...-QS-OE OVEM-...-GN-OE Tab. 18 Circuit symbols, pneumatic OVEM GN GO GN GO GN GO GN GO GN GO Tubing length [m] < 0.5 < 2 < 0.5 < 2 < 0.5 < 2 < 0.5 < 2 < 0.5 < 2 Min. internal diameter of tubing Supply port [mm] Vacuum port [mm] Exhaust port [mm] Tab. 19 Minimum inside diameter of the connection tubes for connections with G-female thread Notes on the pneumatic connection Maximum permissible tube length 2 m. OVEM-...-GN/GO: Pay attention to the minimum inside diameter of the connection tubes Tab. 19. Do not seal exhaust port. OVEM /-10/-14/-20: If necessary, lengthen silencers with a silencer extension (accessories Recommendation: Use tubes of type PUN from Festo 28 Festo OVEM- -LK b English

29 6.3 Electrical Warning Electric voltage. Risk of injuries caused by electric shock, damage to the machine and system. For the electrical power supply, use only PELV circuits in accordance with IEC /EN Use only voltage sources that ensure a reliable electric separation from the mains network in accordance with IEC /EN Observe the requirements of IEC /EN for PELV circuits. Connect vacuum generator to the IO-Link master. 5-pin plug, M12x1, Porttyp A Maximum tightening torque plug connector M12: 0.5 Nm Maximum permissible cable length: 20 m Plug connector Pin Wire colour 1) Function M12x1 1 1 Brown (BN) L V 2 White (WH) DO2 Digital output Out B (PNP) Blue (BU) L- 0 V 4 Black (BK) C/Q IO-Link communication or 3 5 digital output Out A (PNP) 2) 5 Grey (GY) DI1 Not assigned or digital input (PNP) 3) 1) When using the connecting cable in accessories 2) After a fallback or in the SIO-mode, this pin has the configuration of a digital switching output 3) This pin is not assigned in the IO-Link mode. After a fallback or in the SIO-mode, this pin has the configuration of a digital input Tab. 20 Festo OVEM- -LK b English 29

30 7 Commissioning Note Commissioning should only be conducted by qualified personnel. 7.1 Commissioning vacuum generator At initial commissioning, the vacuum generator is placed in operation with the factory settings Tab. 21. Requirement Vacuum generator is fully mounted and connected Chapter 6. Check operating conditions Check the operating conditions and limit values Technical data. Place vacuum generator OVEM-...-OE in operation 1. Apply operating pressure to compressed air supply port (1). Underpressure is generated at the vacuum connection (2). 2. Switch on the operating voltage. The current pressure value is displayed. The vacuum generator is ready for operation. Place vacuum generator OVEM-...-CE in operation 1. Apply operating pressure to compressed air supply port (1). 2. Switch on the operating voltage. 3. In the IO-Link mode: Activate suction (or in the SIO mode: Apply input signal to pin 5). Underpressure is generated at the vacuum connection (2). The current pressure value is displayed. The vacuum generator is ready for operation. Changing of the operating pressure changes the strength of the underpressure at the vacuum connection. As a result, the vacuum can be set at the suction gripper. Functions and parameters can be determined: in IO-Link operation Chapter 5 manually on the device Chapter through Teach-In Chapter Festo OVEM- -LK b English

31 7.2 Adjusting intensity of the ejection pulse Fig. 10 Screw in flow control screw Requirement Vacuum generator is in operation. Adjust ejector pulse 1. Completely screw in flow control screw for adjusting the ejector pulse. 2. Switch on vacuum generation. The maximum possible underpressure is generated at the vacuum connection (2). 3. Switch off vacuum generation. 4. Switch on solenoid valve ejector pulse. No ejector pulse is generated. 5. Switch off solenoid valve ejector pulse. 6. Unscrew the flow control screw for adjusting the ejector pulse somewhat. 7. Switch on solenoid valve ejector pulse. An ejector pulse is generated. 8. Repeat work steps 1. to 7. until the necessary intensity of the ejector pulse is set. Note When large suction grippers are used, a vacuum independent of the device can be built up for physical reasons. This might mean that the workpiece does not detach from the suction gripper, even if the ejector pulse is set to a sufficiently long duration. Festo OVEM- -LK b English 31

32 8 Operation Communication takes place in the IO-Link mode. SIO mode is supported. Parameter description IO-Link mode Chapter 5 Meaning of the displays Chapter 13.1 Menu structure in the SIO mode Chapter Operating manual override Both solenoid valves can be manually switched with the manual override. Mechanical manual override 1. Press in the stem of the manual override with a blunt pin. The solenoid valve switches. 2. Remove the pin. The stem of the manual override automatically returns. The solenoid valve reverts to the basic position. Fig. 11 Electrical manual override The electrical manual override is actuated with the operating keys (Sub-menu FORC Fig. 15). 8.2 Restore factory settings Through resetting of the factory settings, the parameters, configuration and security code are reset to the condition at shipment Tab. 21. The current settings are lost. The parameters and configurations that can be restored are marked in the parameter description with FR (Factory Reset) Chapter 5. Reset through IO-Link command Execute system command Restore factory settings Tab. 16. Resetting with operating buttons on the device 1. Switch off the operating voltage. 2. Simultaneously press and hold down A-key + B-key + Edit button. 3. Switch on the operating voltage. 4. Release the A-key + B-key + Edit button. LCD display shows [CLEA]. The factory settings are restored. 32 Festo OVEM- -LK b English

33 Factory settings Parameter OVEM-...-H OVEM-...-L Switching mode of the electrical output Threshold value comparator Switching logic of the electrical output NO (Normally Open) Air-saving function Active Security code OFF BDC1 - Out A (Air-save) SP1-0.7 bar -0.4 bar Hysteresis 0.25 bar BDC2 - Out A SP1-0.7 bar -0.4 bar SP bar bar Hysteresis 0.25 bar 0.1 bar BDC3 - Out B SP1-0.5 bar -0.2 bar SP bar bar Hysteresis 0.2 bar 0.1 bar Duration of ejector pulse 200 ms Tab. 21 Factory settings 8.3 Activating security code A security code can be established and activated to prevent changes to parameter settings and configurations from being made locally by unauthorised persons. The security code protects against entries made locally through the operating keys on the device. IO-Link parameterisation is not affected. Factory setting OFF. The security code is reset when factory settings are restored. For entry and activation in the Edit mode Chapter Festo OVEM- -LK b English 33

34 9 Error messages and fault clearance The diagnostic messages are shown as event code in the IO-Link mode and as error code in the display. In addition, diagnostic messages can also be signaled through the switching output Out B. In the IO-Link mode, a variety of diagnostic and monitoring functions are available. 9.1 Status messages Status Type Definition 0 Device is OK 1 Notification Check required 2 Warning Outside the specification 3 Error Malfunction Tab. 22 Status messages diagnostics IO-Link 9.2 Diagnostic levels There are 4 diagnostic levels. The red background illumination of the display lights up for messages of the diagnostic levels 1 to 3. As an additional diagnostic option, the vacuum generator has a diagnostic message channel. This can be set with the configuration of pin 2 Chapter Configuration options for pin 2: definition as switching output (In A1) diagnostic message channel 1 (di1) diagnostic message channel 2 (di2) The diagnostic message channel can be configured as normally open (NO) or normally closed (NC). Diagnostic level Diagnostic message channel Description 0 No message Device is OK. 1 Logical channel di1 active 2 Logical channel di1 or di2 is active 3 Logical channel di1 or di2 is active No restriction in function yet, but operating parameters are worsening Function still ensured, but with restrictions (e.g. higher power consumption). Emergency operation, maintenance urgently required. Function is no longer assured. All controllable outputs of the device are inactive. Tab. 23 Diagnostic levels for switching output Out B and display 34 Festo OVEM- -LK b English

35 9.3 Error messages and error codes Display Eventcode IO-Link D 1) S 2) Description Remedy Er1 0x Hardware errors in the device Replace device Er17 0x Supply voltage is too high or too Check power supply low (error) Er20 0x Permissible device temperature exceeded Keep device away from heat sources Er21 0x Short-circuit Out A Check output for overload Er22 0x Short-circuit Out B Er32 0x Vacuum solenoid valve does not switch or does not switch correctly Er33 0x Ejector pulse solenoid valve does not switch or does not switch correctly Er34 0x Evacuation time exceeded in 3 of 5 cycles (warning) Er35 0x Evacuation time exceeded by a factor of two in 3 of 5 cycles Er36 0x Air supply time exceeded in 3 of 5 cycles (warning) Er37 0x Air supply time exceeded by a factor of two in 3 of 5 cycles Er38 0x Switching frequency of the air saving function > 1 Hz (warning) [Option] flashing 0x182A 0 2 Air-save function deactivated because outside the limit value Er39 0x SP1 for Out A not reached after 10 s Er40 0x Supply voltage too high (warning) Er41 0x Supply voltage too low (warning) 1) Diagnostic levels display 2) Status IO-Link Tab. 24 Error messages, error codes, diagnostic levels and error description Check installation Press mechanical manual override several times Check power supply Replace device Check for leakage Check parameterisation SP1 of BDC4 Check for leakage Lengthen air supply time Check throttle setting Check parameterisation SP2 of BDC4 Check for leakage Check parameterisation BDC1 Check for leakage Check parameterisation BDC1 Check for leakage Check parameterisation BDC1 / BDC2 Check power supply Festo OVEM- -LK b English 35

36 9.4 Malfunctions Malfunction Possible cause Remedy Workpiece does not detach from the suction gripper Switching output does not react in accordance with the settings Device-independent vacuum between workpiece and suction gripper, ejector pulse not activated or sufficiently dimensioned Activate ejector pulse when lifting the suction gripper Increase the duration and intensity of the ejector pulse Tubing dimensioned incorrectly Replace tubing (tubing dimensions Chapter 6.2) Flow control screw closed Open the flow control screw Short circuit or overload at the Eliminate short circuit or overload output Device defective Replace device No display Operating voltage faulty Apply permissible operating voltage Chapter 6.3 Electrical connections swapped Connect device correctly Chapter 6.3 Device defective Replace device Incomplete display Display defective Replace device Pressure indicator incorrect Pneumatic connections swapped Connect device correctly Chapter 6.2 Settings cannot be edited, [Lock] is displayed [min] + [max] flash simultaneously Display + [min] + [max] flash simultaneously Display flashes and error code appears Security code activated Enter security code Chapter 8.3 Diagnostic level 1 active Chapter 9.2 Diagnostic level 2 active Chapter 9.2 Diagnostic level 3 active Chapter 9.2 [Option] flashing Teach-In Faulty Set hysteresis larger, Teach-In repeat Tab Festo OVEM- -LK b English

37 10 Disassembly 1. Switch off energy sources. operating voltage compressed air 2. Disconnect pneumatic and electrical connections from the device. 3. Loosen mountings and remove device. 11 Maintenance and care Clean device 1. Switch off energy sources. operating voltage compressed air 2. Clean device with non-abrasive cleaning agents. 3. Check air filter through the inspection window for dirt. Replace air filter 2 1 Fig. 12 Remove / install air filter 1. Vent the vacuum generator. 2. Carefully pull out the slide 1 up to the first detent. The slide must stay in this position on the filter. 3. Pull out filter 2. Clean, if necessary. 4. Push filter into the housing. 5. Push in slide. The filter is pushed by the slide into the vacuum generator. Festo OVEM- -LK b English 37

38 12 Technical data OVEM / / -20 General Approval c UL us listed (OL) RCM CE mark In accordance with EU EMC Directive ( declaration of conformity) Characteristic values Operating pressure OVEM-...-QS / -GN / -PL [bar] 2 6 Operating pressure OVEM-...-QO / -GO / -PO [bar] 2 8 Pressure measuring range [bar] -1 0 Overload pressure at vacuum port [bar] 5 Ready-state delay [ms] 500 Dead time (evacuation and ejection) [ms] Electronics Nominal operating voltage [V DC] 24 ± 15 % Max. output current (for all switching outputs) [ma] 100 Voltage drop (for all switching outputs) [V] 1.8 Idle current [ma] 70 Coil characteristics, 24 V DC - low current phase [W] 0.3 Coil characteristics, 24 V DC - high current phase [W] 2.55 Time until current reduction [ms] 80 Capacitive load maximum DC [nf] 100 Overload protection Provided Inductive protective circuit Adapted to MZ, MY, ME coils Insulation voltage [V] 50 Surge resistance [kv] 0.8 Max. current consumption In IO-Link mode [ma] 150 In SIO-mode without master connection [ma] 270 Accuracy [% FS] ± 3 Hysteresis [% FS] ± 0.1 Short-circuit resistance Provided Protection against incorrect polarity For all electrical connections Display/operation Threshold value setting range [bar] Hysteresis setting range [bar] Festo OVEM- -LK b English

39 OVEM / / -20 Environment Ambient temperature [ C] 0 50 Temperature of medium [ C] 0 50 Operating medium Compressed air in accordance with ISO :2010 [7:4:4] Note on the operating medium Lubricated operation not possible Note on materials RoHS-compliant Resistance to shock (in accordance with IEC /EN60068) Vibration resistance (in accordance with EN ) Protection class 30 g acceleration with 11 s duration (half-sine) Hz: 0.35 mm / Hz: 5 g III Degree of protection 1) IP 65 Relative air humidity [%] 5 85 Interference emission In accordance with EN Interference immunity In accordance with EN Materials Information on materials - seals NBR Information on materials - housing Die-cast aluminium, PA reinforced Information on materials - plug housing housing Nickel-plated brass 1) Degree of protection not evaluated by UL Tab. 26 Festo OVEM- -LK b English 39

40 13 Appendix 13.1 Graphic display and LCD displays C 4 aj Status BDC1 (Out A Air-save) / BDC2 (Out A) 2 Status BDC3 (Out B) / diagnostics level Status IO-Link communication 4 4-digit alphanumeric display 5 Toolbar for functions Tab Segment bar to the right: graphic display of the current status of the digital inputs or valve status Tab B-key 8 A-key 9 EDIT button aj Segment bar to the left: Graphic display of the current pressure value related to the maximum measured value of the measuring range Fig. 13 LCD display and operating keys 40 Festo OVEM- -LK b English

41 Symbol C [SP] [SP] + [min] [SP] + [max] [HY] [NO] / [NC] [TeachIn] [Option] [Lock] <IOL> + [Lock] L1 L3 Tab. 27 L2 L10 L12 L16 L18 Description C flashes: IO-Link mode active Threshold value comparator selected Switchpoint Window comparator selected Lower switchpoint Upper switchpoint Hysteresis Switching logic normally open (Normally open) / normally closed (Normally closed) Teach-In mode active Air-saving function active Security code active Device Access Lock active The device can only be configured and parameterised in IO-Link operation. Segments of the graphic display of the current status of the digital inputs or valve status. Segment L10: status of the vacuum solenoid valve. Valve is switched when the segment is illuminated. Segment L12: status of the ejection pulse solenoid valve. Valve is switched when the segment is illuminated. Segment L16: status of the digital switching input DI1 (suction). Switching input set when segment is illuminated. Segment L18: status of the digital switching input DI2 (ejection). Switching input set when segment is illuminated. Symbolism in display Festo OVEM- -LK b English 41

42 Display Segment L17 + [A] illuminated and [min] flashing Segment L17 + [A] illuminated and [max] blinkt Segment L18 + [B] illuminated and [msec] + [_ _] flashing Description Display of minimum pressure value Display of maximum pressure value Duration of ejector pulse Segments L1, L3, L4, L5 illuminated and [msec] + [_ ] + [min] flashing [msec] + [_ ] + [max] flashing [msec] + [ _] + [max] flashing [msec] + [ _] + [max] flashing [msec] + [_ ] + [SP] + [max] flashing [msec] + [ _] + [SP] + [max] flashing Segments L1, L2, L5, L6 illuminated and display <ON> + [Option] flashing Segments L1, L2, L5, L6 illuminated and [Lock] flashing Segment L10 illuminated and symbol B illuminated + display <FORC> Diagnostics of evacuation and air supply times Display of minimum evacuation time Display of maximum evacuation time Display of minimum air supply time Display of maximum air supply time Setting of evacuation time limit value Setting air supply time limit Setting of air-saving function (EDIT mode) <ON>: Air-saving function active <OFF>: Air-saving function not active Setting security code (1 9999) <OFF>: Security code not active Additional functions of the electrical manual override via operating buttons Vacuum solenoid valve switched Segment L12 illuminated and symbol B illuminated + display <FORC> Additional functions of the electrical manual override via operating buttons Ejector pulse solenoid valve (Eject) switched Tab. 28 Examples for additional displays of segment bars 42 Festo OVEM- -LK b English