Interlocking solenoid safety switches with metal body SLM Protection class IP 67 Y Machines, which have a “run down time” after they have been switched off, are often part of automatic production processes. Safety devices should prevent access by the operator and must be kept locked until the dangerous movement has stopped. The safety-position switch (with suitable control) will ensure that safety guards, doors and other covers are kept closed as long as there is danger. System description The safety switch SLM with lock is available in spring and solenoid interlocking design. The separate actuator is securely mounted to the closing guard. When the actuator is inserted into the switch the guard door position is then monitored and either locked or released (dependant on control system/status of machine). The separate actuator provides a very high level of “operator interference” protection because of its triple coding. The safety switch has three main functions: l Allowing the machine to operate while the guard is closed and locked l Isolating the machine when the guard is open l Monitoring the position of the guard and the actuator (open or closed) With the safety switch SLM the user has a position switch with separate actuator and built in locking device, which meets the criteria of interlocking devices, according to EN 1088, the EN 292 part I and 2 are also valid since 01.01.1995 complying to the necessary machine guide-lines. Important note: The actuator head position may only be changed with the actuator inserted. 78 The locking device in the safety switch SLM is integrated into the switch housing. In the spring latch version locking is achieved with a spring mechanism, in the solenoid latch version locking is achieved by energizing an electromagnet. Both types link the actuator with a switch mechanism for position indication. Benefits of this system l All elements are enclosed in one metal housing l High resistance to heavy industrial use l Compact housing for space saving installation l Triple coded actuator with high interference protection l Simple alteration of actuator approach direction in 90º positions (adjust only with actuator fitted) l All switch functions enclosed in inner module l Safe and easy wiring due to terminals in separate connection area. l Individual contact configurations possible l Integrated safety circuit protects against voltage peaks and incorrect termination l Mounting with M 5 screws according to DIN EN 50041 l Construction design according to VDE 0660 part 200 IEC 947-5-1 control principles GS-ET 19 of the (German) employer’s liability insurance association l Certification: UL & CSA l Approval: BG Switches Locking systems SLM metal-bodied safety switches with separate actuators are available with spring locking as well as solenoid locking. Options l Individual contact configurations possible l Radius actuator for actuating radius lower than 400 mm l Auxiliary unlock l Key override l Emergency stop override l Visual indication of operating status of the guard and lock l Actuator for operating with head rotated 180º from standard l Customised solutions Spring locking The lock for the standard product operates with a spring force latch. The safety device is self-latched, when the actuator reaches its inserted end position and the solenoid is not energized (rest current principle). The actuator is released only when current is applied to the solenoid coil. The guard door can than be opened. Important note: Safety switch model SLM with emergency stop override must be installed inside the guarded (dangerous) area. The emergency stop should only be able to be activated to ensure escape from a dangerous area in case of a system error. Solenoid locking The SLM safety switch is also available with solenoid powered locking. The guard is only then locked when the actuator reaches its inserted end position and the solenoid is energized (conducting). The actuator is released when power is removed. The guard can then be opened. 79 Interlocking solenoid safety switch SLM selection table: standard models Type Locking Actuator type head Spring Solenoid locking locking VTW 12 V DC 24 V DC 24 V AC 24 V UC 48 V AC 120 V AC 230 V AC Contact type: Actuator (guard) position 1NC 2NC 1NC 1NO l l – l – l – – – – – – – l l – l – – – – – l – – l l – l – – – – – – l l l – l – l – – – – l l – l – – – – – l l – l – – – – l l – l – – – l l – l – – l l – l – l – l l l – l l – l l SLM Operating voltage Contact type: Solenoid status 1NC 2NC 1NC 1NO l – – l – l – – l – – l – – l – – – l l – – – l – – l l – – – – l – – l – – l – – – l – – l – – l – – – – l – – l – – l – – – – – l – – l – – l – l – – – – – – – l – – l l – – – – – l – – – l – – l l l – – – – – – l – – l – – l – l l – l – – – – – – – l l – – – l l – – – – – – l – – l l – – VTW 12 DC 24 DC 24 DC 24 UC 48 AC 120 AC 230 AC 1 2 5 1 2 5 Example for Type description: Spring lock mechanism (F) l l – l m m m m l m m m l m l m m Example for Type description: Solenoid lock mechanism (M) l – l l l m m m m m m m l m m l m Description/Reference SLM F M l Standard functions m Technically possible function combination – Not available 80 Switches Auxiliary unlock function – AR KR without Auxiliary Key unlock override Additional Additional Additional functions functions functions Designation Part number Page Adapter /2˝ NPT Additional functions Actuator for 180° head rotation – l – ER Emergency stop override – – l – – – – – – – SLM-FVTW 120AC-55-AR 601.7119.032 82 – l – – – – – – – SLM-FVTW 230AC-55-AR 601.7119.022 83 – l – – – – – – – SLM-FVTW 24DC-51-AR 601.7119.028 83 – l – – – – – – – SLM-FVTW 230AC-51-AR 601.7119.029 83 – – l – – – – – – SLM-FVTW 230AC-55-KR 601.7119.057 84 – – – l *) – – – – – SLM-FVTW 230AC-55-ER 601.7119.058 84 – l – – l – – – – SLM-FVTW 120AC-55-ARL 601.7119.051 85 – l – – – – – – l SLM-FVTW 230AC-55-AR180 601.7119.060 85 l – – – – – – – – SLM-MVTW 24DC-55 601.7119.023 86 l – – – – – – – – SLM-MVTW 120AC-55 601.7119.033 86 l – – – – – – – – SLM-MVTW 230AC-55 601.7119.024 87 l – – – – – – – – SLM-MVTW 24DC-51 601.7119.030 87 l – – – – – – – – SLM-MVTW 230AC-51 601.7119.031 87 – AR KR ER L R S A 180 – m l m *) m m l m m SLM-FVTW 48AC-21-KRS on request l – – m *) m l m m m SLM-MVTW 12DC-22-R on request LED Radius actuator Plug connector – – – – – SLM-FVTW 24DC-55-AR 601.7119.020 82 1 *) Important note: Safety switch model SLM with emergency stop override must be installed inside the guarded (dangerous) area. The emergency stop should only be able to be activated to ensure escape from a dangerous area in case of a system error. 81 Interlocking solenoid safety switch – spring force version – SLM Protection class IP 67 Designation Part number Circuit diagram p Forced disconnect to IEC 947-5-1 chapter 3 Za: not galvanically separated contacts Zb: galvanically separated contacts Slow make & break/snap-action Internal seal (iw)/external seal (w) Contact travel mm (inch) SLM-FVTW 24DC-55-AR 601.7119.020 SLM-FVTW 120AC-55-AR 601.7119.032 E1 21 22 13 14 p Zb l/– 1000 N 24 V DC E2 E1 31 32 21 22 43 44 13 14 p Zb l/– 120 V AC p Zb l/– 1000 N Actuating force N Tol. ± 15% ) actuator in ) actuator out 1 2 On Off Voltage max. Permanent current max. In-rush current complies with standards IEC 947-5-1 AC 15/DC 13 Mechanical life – number of switching actions Operating temperature min./max. 250 V 10 A l 250 V 10 A l 1 x 106 –30 °C/+60 °C –22 °F/+140 °F 1 x 106 –30 °C/+60 °C –22 °F/+140 °F Approvals BG, UL, CSA BG, UL, CSA Weight Delivery: ex-stock/built to order 0.81 kg/1.79 Ib l/– 0.81 kg/1.79 Ib l/– All dimensions in mm (inch) 82 E2 31 32 43 44 p Zb l/– Switches SLM-FVTW 230AC-55-AR 601.7119.022 SLM-FVTW 24DC-51-AR 601.7119.028 E1 21 22 13 14 230 V AC p Zb l/– 1000 N E2 SLM-FVTW 230AC-51-AR 601.7119.029 E1 31 32 21 22 43 44 13 14 p Zb l/– p Zb l/– 1000 N 24 V DC E1 31 E2 p Zb l/– 32 21 22 13 14 230 V AC p Zb l/– 1000 N 250 V 10 A l 250 V 10 A l 250 V 10 A l 1 x 106 –30 °C/+60 °C –22 °F/+140 °F 1 x 106 –30 °C/+60 °C –22 °F/+140 °F 1 x 106 –30 °C/+60 °C –22 °F/+140 °F BG, UL, CSA BG, UL, CSA BG, UL, CSA 0.81 kg/1.79 Ib l/– 0.81 kg/1.79 Ib –/l 0.81 kg/1.79 Ib –/l 31 32 E2 p Zb l/– 83 Interlocking solenoid safety switch – spring force version – SLM Protection class IP 67 Designation Part number Circuit diagram p Forced disconnect to IEC 947-5-1 chapter 3 Za: not galvanically separated contacts Zb: galvanically separated contacts Slow make & break/snap-action Internal seal (iw)/external seal (w) Contact travel mm (inch) SLM-FVTW 230AC-55-KR 601.7119.057 SLM-FVTW 230AC-55-ER 601.7119.058 E1 21 22 13 14 230 V AC p Zb l/– 1000 N E2 E1 31 32 21 22 43 44 13 14 p Zb l/– 230 V AC p Zb l/– 1000 N Actuating force N Tol. ± 15% ) actuator in ) actuator out 1 2 On Off Voltage max. Permanent current max. In-rush current complies with standards IEC 947-5-1 AC 15/DC 13 Mechanical life – number of switching actions Operating temperature min./max. 250 V 10 A l 250 V 10 A l 1 x 106 –30 °C/+60 °C –22 °F/+140 °F 1 x 106 –30 °C/+60 °C –22 °F/+140 °F Approvals BG, UL, CSA BG, UL, CSA Weight Delivery: ex-stock/built to order 0.88 kg/1.49 Ib l/– 0.94 kg/2.08 Ib l/– All dimensions in mm (inch) 84 E2 31 32 43 44 p Zb l/– Switches SLM-FVTW 120AC-55-ARL 601.7119.051 SLM-FVTW 230AC-55-AR180 601.7119.060 E1 p Zb l/– 1000 N p Zb l/– 21 22 13 14 230 V AC p Zb l/– 1000 N 250 V 10 A l 250 V 10 A l 1 x 106 –30 °C/+60 °C –22 °F/+140 °F 1 x 106 –30 °C/+60 °C –22 °F/+140 °F BG, UL, CSA BG, UL, CSA 0.83 kg/1.83 Ib l/– 0.83 kg/1.83 Ib l/– E2 31 32 43 44 p Zb l/– 85 Metal bodied safety switches with separate actuator and solenoid latch interlocking SLM Protection IP 67 Reference type Part number Circuit diagram p Forced disconnect to IEC 947-5-1 chapter 3 Za: not galvanically separated contacts Zb: galvanically separated contacts Slow make & break/snap-action Internal seal (iw)/external seal (w) Contact travel mm (inch) SLM-MVTW 24DC-55 601.7119.023 SLM-MVTW 120AC-55 601.7119.033 E1 21 22 13 14 p Zb l/– 1000 N 24 V DC E2 E1 31 32 21 22 43 44 13 14 p Zb l/– 120 V AC p Zb l/– 1000 N Actuating force N Tol. ± 15% ) actuator in ) actuator out 1 2 On Off Voltage max. Permanent current max. In-rush current complies with standards IEC 947-5-1 AC 15/DC 13 Mechanical life – number of switching actions Operating temperature min./max. 250 V 10 A l 250 V 10 A l 1 x 106 –30 °C/+60 °C –22 °F/+140 °F 1 x 106 –30 °C/+60 °C –22 °F/+140 °F Approvals UL, CSA BG 0.81 kg/1.79 Ib l/– UL, CSA BG 0.81 kg/1.79 Ib l/– Weight Stock status: Ex stock/Built to order All dimensions in mm (inch) 86 E2 31 32 43 44 p Zb l/– Switches SLM-MVTW 230AC-55 601.7119.024 SLM-MVTW 24DC-51 601.7119.030 E1 21 22 13 14 230 V AC p Zb l/– 1000 N E2 SLM-MVTW 230AC-51 601.7119.031 E1 31 32 21 22 43 44 13 14 p Zb l/– p Zb l/– 1000 N 24 V DC E1 31 E2 p Zb l/– 32 21 22 13 14 230 V AC p Zb l/– 1000 N 250 V 10 A l 250 V 10 A l 250 V 10 A l 1 x 106 –30 °C/+60 °C –22 °F/+140 °F 1 x 106 –30 °C/+60 °C –22 °F/+140 °F 1 x 106 –30 °C/+60 °C –22 °F/+140 °F UL, CSA BG 0.81 kg/1.79 Ib l/– UL, CSA BG 0.81 kg/1.79 Ib l/– UL, CSA BG 0.81 kg/1.79 Ib –/l 31 32 E2 p Zb l/– 87