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exposure to a mechanical hazard� 

For the control system this means the following:

 -Switch-on commands which cause hazardous situations must become active 

only when the safety guard is in a protective position and the guard locking in 

locked position� 

 -The locked position of the guard locking must be released only when the 

hazardous situation is no longer present�

Before safety switches are used, a risk assessment must be performed on the 

machine, e�g� according to

 -EN ISO 13849, Safety of machinery - Safety-related parts of control systems
 -EN 12100-1, Safety of machinery - General principles for design - Risk 

assessment and risk reduction 

Correct use includes compliance with the relevant requirements for installation 

and operation, in particular

 -IEC 62061, Safety of machinery - Functional safety of safety-related electrical, 

electronic and programmable electronic control systems

 -EN ISO 13849, Safety of machinery - Safety-related parts of control systems
 -EN 14119, Interlocking devices associated with guards
 -EN 60204-1, Electrical equipment of machines

The user is responsible for a safe integration of the device into a safe 

overall system�

 

Validate the whole system, e�g� to EN ISO 13849-2�

If the simplified procedure to EN ISO 13849-1:2016  (section 6�3) is used for 

validation, the performance level (PL) may be reduced in the event of several 

units being connected in series� If a data sheet is supplied with the product, the 

specifications of the data sheet apply in case of deviations from the operating 

instructions�

5  Structure and operating principle

AS-Interface safety switches, type AC903S/AC904S feature a slave interface to 

the safety bus AS-Interface Safety at Work� They enable locking of movable safety 

guards�

Содержание AC903S

Страница 1: ...7390915 03 01 2017 Original operating instructions Safety switch with guard locking AC903S AC904S UK ...

Страница 2: ...1 1 Changing the actuating direction 10 6 2 Protection against environmental influences 10 7 Electrical connection 11 7 1 Wiring 11 8 Set up 11 8 1 Setting of the AS Interface address 11 8 2 Configuration in the AS Interface safety monitor 11 8 2 1 Monitor with extended functions 12 9 Operation 13 9 1 LED indicators AS Interface status messages 13 10 Function check and troubleshooting 14 10 1 Mech...

Страница 3: ...3 UK 15 Standards and approvals 22 15 1 Directives and standards 22 15 2 Approvals 22 ...

Страница 4: ... during operation of the machine For this reason note all remarks on installation and handling given in this document Also adhere to the safety instructions for the operation of the whole installation In case of non observance of notes or standards especially when tampering with and or modifying the unit any liability and warranty is excluded The unit must be installed connected and put into opera...

Страница 5: ...nected to the safety guard A complete safety related system normally consists of several signalling devices sensors evaluation units and concepts for a safe shut down The manufacturer of a machine or installation is responsible for a correct and safe overall function All safety instructions and specifications in the operating instructions of the AS Interface safety monitor must be adhered to 3 Ite...

Страница 6: ...afety of machinery Functional safety of safety related electrical electronic and programmable electronic control systems EN ISO 13849 Safety of machinery Safety related parts of control systems EN 14119 Interlocking devices associated with guards EN 60204 1 Electrical equipment of machines The user is responsible for a safe integration of the device into a safe overall system Validate the whole sy...

Страница 7: ...sequence comprising 8x4 bits via the AS Interface bus This code sequence is evaluated by an AS Interface safety monitor The positively driven contact SK for door monitoring is represented by the AS Interface input bits D0 and D1 The solenoid monitoring contact ÜK is represented by the AS Interface input bits D2 and D3 Configure the safety switch in the AS Interface safety monitor accordingly refer...

Страница 8: ...nto the locked position by spring force AC904S The locking bolt passes into the locked position by applying the operating voltage of the solenoid The safety contacts close The whole safety code sequence 8 x 4 bits is transmitted via the AS Interface input bits D0 to D3 Deactivate the guard locking and open the safety guard AC903S Apply the operating voltage of the solenoid and release the guard lo...

Страница 9: ...he locking screw Using a screwdriver turn the mechanical release by approx 180 in direction of the arrow The locking screw must be returned to its original position and sealed after use for example with sealing lacquer Carry out a function check after releasing the guard locking For further information please refer to the standard EN ISO 14119 2013 section 5 7 5 1 6 Installation Do not use safety ...

Страница 10: ...e movable part of the safety guard Observe EN ISO 14119 2013 sections 5 2 and 5 3 on mounting of a safety switch and an actuator Observe EN ISO 14119 2013 section 7 on measures to reduce the possibilities of bypassing 6 1 1 Changing the actuating direction A D B C Remove the screws from the actuating head Set the required direction Tighten the screws with 0 6 Nm Close the unused actuating slots wi...

Страница 11: ... system with an M12 connector and a 4 pole cable Additionally via a passive AS Interface splitter with a yellow AS Interface cable 2 4 3 1 1 AS Interface 2 not used 3 AS Interface 4 not used Observe the total current consumption from AS i chapter 12 8 Set up 8 1 Setting of the AS Interface address The address can be set before or after installation Set the AS Interface address of the safety switch...

Страница 12: ...nel feature and the door contact are not tested in this configuration Take additional measures for testing outside the monitor 8 2 1 Monitor with extended functions For the monitor with extended functions the following configuration is possible dual channel conditionally dependent independent In 1 The guard locking is opened or closed via the output D0 When the guard locking is open the safety cir...

Страница 13: ...h wrong IO ID reset active at slave red is lit green is flashing No data exchange between master and slave Cause slave address 0 red and green flashing device error in the slave red is flashing green is lit 1 LED green 2 LED red 3 LED red Fault 4 LED green Power Two additional function LEDs 1 2 can be connected via the AS Interface bus e g to indicate the door status The red LED 2 is connected via...

Страница 14: ...d force activate the guard locking The machine must not start automatically It must not be possible to open the safety guard 3 Activate operation in the controller It must not be possible to deactivate the guard locking as long as the operation is active 4 Switch off the operation in the controller and deactivate the guard locking The safety guard must remain locked until there is no longer a risk...

Страница 15: ...points correct switching function secure mounting of the components dirt and wear loose connectors Exclusion of liability under the following circumstances if the unit is not used for its intended purpose non compliance with the safety regulations installation and electrical connection by non authorised personnel failure to perform function checks ...

Страница 16: ...16 11 Scale drawing 55 25 144 190 41 4 240 154 M12x1 30 38 5 44 50 46 4 ...

Страница 17: ...action force 30 N not locked Retention force 20 N Locking force Fmax 2500 N Locking force FZh in accordance with the test principles GS ET 19 FZh Fmax 1 3 2000 N Weight approx 0 5 kg Switching principle SK ÜK positively driven slow action switching element Minimum travel and overtravel Approach direction horizontal h and vertical v actuator S standard 24 5 5 AS Interface specifications AS Interfac...

Страница 18: ...rface voltage applied AS Interface LED Fault red offline phase or address 0 Reliability values to EN ISO 13849 1 B10d 5 x 106 13 Terms and abbreviations PL Performance level Capability of safety related parts to perform a safety function under predictable conditions to fulfil the expected risk reduction B10d Number of cycles at which 10 of the components have failed and caused danger ...

Страница 19: ...diagnostics dual channel conditionally dependent protective equipment closed and locked code sequence green protective equipment closed but not locked half sequence 00 yellow flashing invalid state protective equipment open guard locking active 00 half sequence flashing red monitoring of the invalid state protective equipment open 00 00 red address 0 or communication disturbed grey ...

Страница 20: ...rotective equipment closed and locked code sequence green protective equipment closed but not locked half sequence 00 red invalid state protective equipment open guard locking active 00 half sequence red protective equipment open 00 00 red address 0 or communication disturbed grey ...

Страница 21: ...king has been open protective equipment closed but not locked half sequence 00 Yellow flashing if the protective equipment has been closed before Red if the protective equipment has been open before invalid state protective equipment open guard locking active 00 half sequence Yellow flashing if the protective equipment has been closed before Red if the protective equipment has been open before pro...

Страница 22: ...The following standards and directives have been applied Machinery Directive 2006 42 EC EN ISO 13849 1 2016 EN 62026 2 2013 EN 60947 5 1 2004 2009 EN 60947 5 1 2004 2009 Annex K EN 14119 2013 15 2 Approvals EU declaration of conformity UL cULus AS i certificate ...

Страница 23: ...23 UK ...

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