USER MANUAL Option -AS- Restart lock for
Contents
1. Handling Components SERVOLINE USER MANUAL Option AS Restart lock for personnel safety BA 100044 Edition 02 06 Restart lock for personnel safety Edition 02 06 Change index Editions issued so far Edition Comments Order number English version 07 01 First edition 507165 02 06 New article number BA 100044 Restart lock for personnel safety Edition 02 06 Contents 1 General 1 2 143 Aboutthis manuall 2 ee e ee ai a aede det aget 1 2 1 2 Prescribed use Use as directed of servo amplifiers with AS 1 2 1 3 Description of the AS ttnn nennt 1 3 1 3 1 Advantages of the AS option 1 3 1 3 2 Functional description 1 3 1 3 3 Block diagram 1 4 1 3 4 Signal diagram sequence 1 4 2 Installation Commissioning 2 5 2 4 Safety Instr ctlons e o de EE RE PEE 2 5 2 2 Functional test tni eei despido dete dite tend tt 2 5 2 3 RIM ASSIGNMEMUS tcn ii eter E E REDE UNE E dE D EHE RETE DIE 2 6 24 Gonrnection diagralm DEP Ur t 2 6 2 Application examples eriaren a Aea 2 7 2 5 1 Moving single axes or axis groups in setting up operation 2 7 2 5 2 Switching off grouped axes with separate working ar2. so that a malfunction of the internal safety relay or a cable break can be recognized If the AS option is automatically activated by a control system KSI1 2 then make sure that the output of the control is monitored for possible malfunction This can be used to prevent a faulty output from activating the AS option while the motor is running It is vital to keep to the following functional sequence when the AS option is used 1 Brake the drive in a controlled manner speed setpoint 0V 2 When speed 0 rpm disable the servo amplifier enable 0V 3 If there is a suspended load apply an additional mechanical block to the drive 4 Activate the AS option 2 2 Functional test The functioning of the restart lock must be tested during commissioning after every alteration in the wir ing of the system or after exchanging one or more components of the system Ox gi dec Stop all drives with setpoint OV disable drives mechanically block any suspended loads Activate the 5 option Open protective screens but do not enter hazardous area Pull off the X10 connector from an amplifier the mains contactor must drop out Reconnect X10 Switch on mains contactor again Repeat steps 4 and 5 for each individual servo amplifier Restart lock for personnel safety Edition 02 06 2 3 24 Pin assignments AGNO BTB RTO BTB RTO SW SETP 1 SW SETP 1 SW SETP 2 SW SETP 2 MONITOR 1 MONITOR 2 AGND DIGITAL
3. gt gt 72 51 72 52 mains 3 1 3 K Servo amplifier Servo amplifier Servo amplifier Servo amplifier 818 q d 878 q d KSO KSi 4 P KSO 5 d 501 KSi d p 502 KSI 4 p 502 KSI d 502 KSi d drive 1 drive 2 drive 3 drive 4 drive 5 Restart lock for personnel safety Edition 02 06 2 5 2 2 Control circuit 24V 4 EMERG OFF BTB RTO drive 1 OFF E 9 1 0 501 BTB RTO drive 2 drive 1 i KSO2 501 BTB RTO drive 3 1 drive 2 o so2 9 501 BTB RTO drive 4 drive 3 O 502 KSO BTB RTO drive 5 52 drive 4 502 gt 6501 drive 5 S02 ON K1 K2 KSI O K1 kz D KSi O ov e mains contactor auxiliary contactor drive 1 TNT IM 24 Dg LB drive 5 Restart lock for personnel safety Edition 02 06 3 Appendix 3 1 Abbreviations and acronyms The table below shows abbreviations and acronyms used in this manual Abbreviation acronym Explanation AGND Analogue ground AS Start inhibit BTB RTO Ready for operation DGND Digital ground DIN German technical standards organisation Deutsches Institut f r Normung ISO International Standardisation Organisation V AC Alternating voltage V DC Direct voltage VDE Associat
4. IN1 DIGITAL IN2 PSTOP NSTOP ENABLE DIGITAL OUT1 DIGITAL OUT2 DGND X4 1 24V 2 24V 3 XGND 4 XGND X10 o q o KSO1 o KSO2 KSi KSI o o gt Connection diagram Servo amplifier control 10k setpoint1 10V CNC GND CNC GND CNC GND safety circuit 1 0 GND AS 24 V acc to O GND ENABLE 1 0 GND Restart lock for personnel safety Edition 02 06 2 5 Application examples 2 5 1 Moving single axes or axis groups in setting up operation In setting up operation people will frequently be within the danger zone of the machinery Axes will nor mally be moved under the control of permission switches An additional switch off of the unused axes by means of the restart lock increases the safety margin and avoids the repeated switching of main contac tors or motor contactors 2 5 2 Switching off grouped axes with separate working areas Even when several amplifiers are operating off a common mains supply and DC link it is possible to set up groups for separate working areas These groups can then be switched off separately for personnel safety For this purpose we have provided you with a suggested circuit mains supply circuit and control circuit for 2 separate groups interconnected DC links and a common mains supply voltage 2 5 2 1 Mains supply circuit ZA m 22222227272 227 JV za i
5. all covers and switchgear cabinet doors closed during operation Otherwise there are deadly hazards with the possibility of severe damage to the health or ma terial e In operation depending on the degree of enclosure protection servo amplifiers can have bare components which are live and hot surfaces Control and power cables can carry a high volt age even when the motor is not rotating e Never undo the electrical connections of the servo amplifier when it is live There is a hazard of electric arcing with danger to persons and contacts e After disconnecting the servo amplifier from the mains supply line wait at least five minutes before touching live sections of the equipment e g contacts or undoing connections Ca pacitors can have dangerous voltages present up to five minutes after switching off the sup ply voltages To be safe measure the voltage in the intermediate circuit DC link and wait un til it has fallen below 40V Restart lock for personnel safety Edition 02 06 1 General 1 1 About this manual This manual describes the AS option restart lock for personnel safety for the digital servo amplifiers of Servoline products The function of the restart lock is described with examples of applications and the necessary wiring and incorporation into the power and control circuits of the system This manual is intended for the use of qualified staff with the following knowledge Installation only by el
6. ation have been approved by the trade liability association 1 3 2 Functional description An additional connector X10 is mounted on the front panel of the servo amplifier The coil connections and a make n o contact of a safet relay are made available throug 4 terminals on this connector The 24V DC safety relay in the servo amplifier T V approved is controlled externally All the relay con tacts have positive action Two contacts switch off the driver supply of the output stage in the servo amplifier and short the internal setpoint signal to AGND 0V The make n o contact used for monitoring is looped into the control circuit If the safety relay is not energized then the monitoring contact is open and the servo amplifier is ready for operation If the drive is electronically braked the servo amplifier is disabled and the motor holding brake is on then the safety relay is energized manually or by the controls The supply voltage for the driver circuit of the output stage is switched off in a safe manner the internal setpoint is shorted to OV and the monitoring contact bridges the safety logic in the control circuit of the system monitoring of protective doors etc Even if the output stage or driver is destroyed it is impossible to start the motor If the safety relay itself is faulty then the monitoring contact cannot bridge the safety logic of the system Opening the protective devices will then switch off the sy
7. eas 2 7 2 5 2 4 Mains supply circuit 2 7 2 5 2 2 Control circuit 2 8 3 Appendix 3 9 3 1 Abbreviations and 3 9 Restart lock for personnel safety Edition 02 06 Safety instructions e Only properly qualified personnel are permitted to carry out activities such as transport in stallation commissioning and maintenance Properly qualified persons are those who are fa miliar with transport installation assembly commissioning and operation of the products and who have the appropriate qualifications for their jobs The qualified personnel must know and observe the following standards and directives IEC 364 and CENELEC HD 384 or DIN VDE 0100 IEC Report 664 or DIN VDE 0110 National accident prevention regulations or VBG 4 Read the available documentation before carrying out installation and commissioning Incor rect handling of the servo amplifier or the AS option can lead to injury to persons or mate rial damage It is vital that you keep to the technical data and the information on connection requirements nameplate and documentation e The servo amplifier contain electrostatically sensitive components which may be damaged by incorrect handling Discharge you body before touching the servo amplifier Avoid contact with highly insulating materials artificial fabrics plastic film etc Place the servo amplifier on a conducting surface Do not open the units Keep
8. ectrically trained personnel N Commissioning only by personnel with extensive knowledge of electrical technology drive technology 1 2 Prescribed use Use as directed of servo amplifiers with 5 Observe the user manual for the servo amplifier Prescribed use The AS restart lock is exclusively intended to provide safety for personnel by preventing the restart of a system To achieve this personnel safety the wiring of the safety circuits must meet the safety require ments of EN60204 EN292 and VDI 2853 The 5 restart lock must only be activated when the motor is no longer rotating setpoint OV speed Orpm enable OV Drives with a suspended load must have an additional safe mechanical blocking e g by a motor holding brake when the monitoring contacts KSO1 2 and BTB RTO for all servo amplifiers are wired into the control signal loop to recognize a cable break The 5 restart lock may only be controlled by a CNC if the control of the internal safety relay is ar ranged for redundant monitoring The AS restart lock must not be used if the drive is to be made inactive for the following reasons 1 cleaning maintenance and repair operations long inoperative periods In such cases the entire system should be disconnected from the supply by the personnel and secured main switch 2 emergency stop situations In an emergency stop situation the main contactor is switched off by the emergency
9. ion of German electrical engineers XGND Ground of the 24 V supply voltage MONA ECH more than technology MONTECH AG Gewerbestrasse 12 CH 4552 Derendingen Fon 41 32 681 55 00 Fax 41 32 682 19 77 info montech com www montech com
10. stem Restart lock for personnel safety Edition 02 06 internal setpoint lock t motor locked by controller t motor blocked mechanically 1 3 3 Block diagram DC charging 0 circuit PEN mains VA EHK FY 46 57 activation 24V ENT driver in EN supply X10 i KSI4 KSI i MEE 2 KSO2 L I z2 Fra idcm logic 1 3 4 Signal diagram sequence 2 terminal SW SETP 1 setpoint input i 424V terminal ENABLE Yj Enable AA input terminal BRAKE E brake O output terminal KSI 24V restart lock O input terminal KS01 2 1 Supervisory 0 output gt 0 2s t t danger zone accessible Restart lock for personnel safety Edition 02 06 2 Installation Commissioning 2 1 Safety instructions AC Use the AS option only to temporarily prevent a drive from restarting to ensure personnel safety The restart lock must not be used for immobilizing drives in emergency stop situa tions or for maintenance repair and cleaning operations In such cases the entire system must be disconnected from the supply by using the mains switch or con tactor The monitoring contacts KSO1 2 for each amplifier with an AS option must be looped into the control circuit This is vital
11. stop button or the BTB contact in the safety circuit Restart lock for personnel safety Edition 02 06 1 3 Description of the AS option 1 3 1 Advantages of the AS option A frequently required application task is the protection of personnel against the restarting of drives This can not be achieved by an electronic inhibit but must be implemented with mechanical elements posi tively driven relay contacts To get round this problem up to now either the main contactor in the mains supply line was switched off or another contactor was used to disconnect the motor from the servo amplifier The disadvantages of this method are the DC link has to be charged up again at restart wear on the contacts of the contactors caused by switching under load extensive wiring required with additional switching components The AS option avoids these disadvantages A safety relay in the servo amplifier is activated either by the PLC or manually Positively driven contacts provide a safe disconnection of the servo amplifier the setpoint input of the servo amplifier is inhibited and a signal is sent to the safety circuit Advantages of the AS option the DC link remains charged up since the mains supply line remains active onlylow voltages are switched so there is no contact wear very little wiring is required the functionality and the personnel safety when using the circuit recommendations in this documen t
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