Operating Instructions Safety Switch TX
Contents
1. Changing the actuating direction gt Unscrew and open switch cover Remove actuating head from the switch by turning and refit in the required position bayonet fastening gt Fit locking pins supplied for protection against twisting gt Close the cover and screw in position gt Cover the unused actuating slot with the enclosed slot covers Protection against environmental effects A lasting and correct safety function requires that the actuating head must be protected against the penetration of foreign bodies such as swarf sand blasting shot etc Cover the actuating slot the actuator and the rating plate during painting work Electrical connection A Electrical connection must be performed only by authorized personnel The solenoid operating voltage the LED operating voltage and the control voltage only TX3 024 and TX4 024 for the locking solenoid must comply with the information on the rating plate e g UB AC DC 24 V Solenoid operating voltage and control voltage can be bridged if a current of 2A can be supplied for TIMP 250ms on switching on the solenoid gt Version TX M N cable entry Unscrew locking screw for the required insertion opening Fit the cable gland with the appropriate degree of protection gt For pin assignment see Figure 5 Tighten the screws for the switching element with a torque of 0 5 Nm gt Check that the cable entry is sealed gt Close the cove2. 8 gt 440 Os Figure 4 Insertion depth and approach radii Figure 6 Pin assignment EUCHNER GmbH Co KG KohlhammerstraBe 16 D 70771 Leinfelden Echterdingen Tel 49 711 75 97 0 Fax 49 711 75 33 16 www euchner de info euchner de Subject to technical modifications no responsibility is accepted for the accuracy of this information EUCHNER GmbH Co KG 079777 03 10 06
3. Operating Instructions Safety Switch TX EUCHNER Correct use Safety switches series TX are electromagnetic interlock devices with guard locking They interlock movable safety guards so that dangerous work on machines can only be carried out if the safety guard is closed and locked gt the safety guard cannot be opened when the machine is running For the control system this means that gt Starting commands which cause hazardous situ ations must become active only when the safety guard is in protective position and the guard lock ing is 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 in accordance with gt EN 954 1 Safety of machinery Safety related parts of control systems General principles for design Annex B gt EN 1050 Safety of machinery Principles for risk assessment gt IEC 62061 Safety of machinery Functional safety of safety related electrical electronic and program mable electronic control systems Correct use includes compliance with the relevant requirements for installation and operation in particular EN 954 1 Safety of machinery Safety related parts of control systems General principles for design gt EN 1088 Safety of machinery Interlocking devices associated with guards Principles for design and s
4. acts are opened gt Opening The guard locking pin is blocked when the actuator is pulled out The safety contacts remain positively opened A Only switching elements marked with the posi tive opening symbol shall be used for the safety circuit Mechanical release In the event of malfunctions the guard locking can be released with the mechanical release irrespective of the state of the solenoid see Figure 3 Unscrew locking screw Using a screwdriver turn the mechanical release by around 180 in the direction of the arrow The locking screw must be returned to its original position and sealed after use for example with sealing lacquer Mounting A Mounting must be performed only by authorized personnel Assemble the safety switch so that access to the switch is difficult for operating personnel when the safety guard is open gt it is possible to operate the mechanical release and check and replace the safety switch A Safety switches and actuators must not be used as an end stop A Mount the safety switch only in assembled condition gt Insert the actuator in the actuating head gt Mount the safety switch positively Permanently connect the actuator to the safety guard so that it cannot be detached e g using the enclosed non removable screws rivets or welding gt Fit an additional stop for the movable part of the safety guard Changing the actuating direction Figure 1
5. ectors 13514 13514 135514 13514 s 7 aa A If damage or wear is found the complete switch ane and actuator assembly must be replaced DH 1 42 411 42 418 42 41942 TX B L ee 33 734 33 37334 33 Hs 34 33 734 JAHE IABE Replacement of individual parts or assemblies oa ae eee meee T U LED LED Ug ov U LED LED ov i t itted 11 lo 12 11 ale 12 11a 12 1157012 B LED TED Ug 8 ar an IS not permitted r g TX3 024 TXL TX2 Safety switches must be exchanged completely after 41 42 41 ala 42 410 42 419 42 TX C illi itchi i Op neds 33 iad site sate TO TX4 024 TX 110 230 1 million switching operations D21 a22 21 aja 22 2101 22 2191022 187314 135514 1355 14 13 oh 14 gg z Z Exclusion of liability under the following Figure 2 Switching elements and switching functions Figure 5 Circuit diagrams conditions 7 er gt if the unit is not used for its intended purpose i i 2 insertion Spine non compliance with safety regulations 28 depth a gt installation and electrical connection not per Pin assignment formed by authorized personnel Plug connector g i gt RC18 gt failure to perform functional checks or M5 gt 45 mm ISO 1207 Technical data ON peA Parameters Value DIN 912 Housing material Die cast alloy cathodically M i dipped a e echanical Wrap release Degree of protection according to IEC 529 Locking with cable gland P67 with plug connector P 65 TX1 RC18 Mech operating cycles gt 1x10 TX2 RC18 Amb
6. election gt EN 60 204 1 Safety of machinery Electrical equip ment of machines General requirements A Safety Precautions A Safety switches perform a personal protection function Incorrect installation or tampering can lead to severe injuries to personnel A Safety switches must not be bypassed bridg ing of contacts turned away removed or otherwise rendered ineffective A The switching operation must only be triggered by actuators specifically provided for this pur pose which are permanently connected to the safety guard Function Safety switches series TX permit locking of movable safety guards Position monitoring of the safety guard and moni toring of interlocking are performed via the same switching element Version TX1 and TX3 spring interlock The guard locking pin is held in locked position by spring force and released by electromagnetic ac tuation The guard locking functions in accordance with the closed circuit current principle The safety guard cannot be opened immediately in the event of interruption of the solenoid power supply Version TX2 and TX4 solenoid interlock A This type may be used only in special cases after strict assessment of the accident risk The safety guard can be opened immediately in the event of interruption of the solenoid power supply The guard locking pin is held in locked position by electromagnetic force and released by spring force The guard locking opera
7. ient temperature 20 80 C Installation position Any actuating head down 8 s preferred 1111 13 12 14 5 Approach speed max 20 m min Switching principle Slow action switching element Contact material Silver alloy gold flashed Connection type on swit i Figure 3a ching element Screw terminals TX M_ G M20x1 5 Aj con X_N Ge 1 NPT Connection type on circuit Cage pull clamps board Conductor cross section Max 1 5 mm2 TX3 RC18 Rated insulation voltage TX4 RC18 with cable gland U 250V with plug connector U 50V Figure 3b Utilization category for the switching element to IEC 947 5 1 TAIE AC 15 4A 230V DC 13 4A 24V Ill Switching voltage min 12V Switching current min at24V 1 mA Leading with et erca protectii 4AgG screen spring control circuit fuse Solenoid operating voltage U i power input 8 AC DC 24V 8W Pin assignment TX3 024 and TX 4 024 AC DC 110V 10W Plug connector 2A for Tup 250 ms AC DC 230V 11W Figure 3c BH12 A TX BH12 Duty cycle 100 Operating frequency max on TX3 and TX4 AD mite Control voltage U on TX3 024 TX4 024 AC DC 24V Actuating force 35N Extraction force 35N Retention force 20N 2 o N Locking force F 1700 N 8 Locking force F in accordance p _ Fay 1300 N with Test Principles GSET 19 5 13 TX3 BH12 3 e n a TX4 BH12 33 O34 T Tarz 2 O a Loe Actuator Insertion depth s Approach radius R RD i uns emaj Standard 32 1 gt 300 Overtravel 32
8. r and screw in position gt Version TX RC18 BH12 plug connector For pin assignment see Figure 6 Setup gt Mechanical function test The actuator must slide easily into the actuating head Close the safety guard several times to check the function gt Electrical function test gt Close the safety guard Start the machine It must not be possible to open the safety guard gt Switch off the machine Open the safety guard The machine must not start when the safety guard is open Operating Instructions Safety Switch TX EUCHNER Actuator inserted Actuator removed Service and inspection locked locked unlockedi popen No servicing is required but regular inspection of the following is necessary to ensure trouble free 4 G IN long term operation iH IN gt correct switching function N aa gt secure mounting of components aleea gt dirt and wear 1 57761 41 ato 42 4101042 Mofa 42 419242 TXA gt sealing of cable entry eval Ss ST Oise gt loose cable connections or plug conn
9. tes in accordance with the open circuit current principle gt Closing and locking The guard locking pin is released by insertion of the actuator into the safety switch TX1 and TX3 The guard locking pin is moved to locked position by spring force TX2 and TX4 110 230 The guard locking pin is moved to locked position when the solenoid operat ing voltage is applied TX4 024 The guard locking pin is moved to locked position by applying the control voltage when the solenoid operating voltage is present The safety contacts are closed gt Unlocking TX1 and TX3 110 230 When the operating volt age is applied to the solenoid the guard locking pin unlocks the actuator safety guard to the switch position Unlocked see Figure 2 TX3 024 On the application of the control voltage when the solenoid operating voltage is present the guard locking pin unlocks the actuator safety guard to the switch position Unlocked see Figure 2 TX2 and TX4 110 230 When the operating volt age is removed from the solenoid the guard locking pin unlocks the actuator safety guard to the switch position Unlocked see Figure 2 TX4 024 When the operating voltage is removed from the solenoid and or the control voltage is removed the guard locking pin unlocks the actua tor safety guard to the switch position Unlocked see Figure 2 On the versions TX3 and TX4 the actuator can be unlocked by pulling it The safety cont
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