Safety Interlock Switch Approvals: MKey5 TV Rheinland (X-versions) Application: Gates Hatches Features: 2NC + 1NO (actuator in) 4 actuating positions Holding force 12 or 40N Up to PL e/Cat.4 Plastic, Plastic with stainless steel head or stainless steel Switch operational description Positive forced disconnected contacts MKey5 Interlock switches are designed to provide position A positive forced contact provides a forced disconnect of the interlock detection for moving guards. They are designed to fit safety contacts at the withdrawal of the actuator. The design the leading edge of sliding, hinged or lift off machine guards. of the MKey5 ensures that the contacts will not fail or be held 9 The actuator is fitted to the moving part of the guard and is in a normally closed position, due to failure of the spring me- aligned to the switch entry aperture. chanism or that welding/sticking of the contacts can occur. The head can be rotated to provide four given actuator entry Safety level positions. When the actuator is inserted into the switch the The positive forced disconnect contacts gives a high safety safety contacts close and allow the machine start circuit to level and the interlock switch has an anti-tamper mechanism. be enabled. MKey5 has two versions regarding holding force, By combining the MKey5 with one of our suitable safety 12N and 40N. MKey5 has several types of actuators as an op- control module, for example a safety relay from the RT-series, tion. A standard actuator key is always delivered with interlock Pluto safety-PLC or Vital module, the requirements for both switches. hatch and gate switch supervision can be fulfilled. To obtain the highest level of safety, two switches per gate are required. Material Depending on the environment where the switch will be used, Explosion Proof version (X) different material can be chosen on the Mkey5. The basic MKey5 also exist in versions with certified explosion proof version is in a full plastic body (polyester) and in cases where contact block (X-versions). MKey5ZX is in stainless steel and the demands are higher on the interlock switch head, there is can be used in European Zone 1, 2, 21,22 enviroments (Gas a version with a plastic body and with a stainless steel head. and Dust). Preassembled with 3meter cable. Both these types give the MKey5 interlock switch a rating of IP67. Regulations and Standards The MKey5 is designed and approved in accordance to In harsh applications as for food processing and chemical relevant standards. Examples of relevant standards are industry there is a MKey5Z Interlock switch with a total rugged EN1088, IEC/EN60947-5-1, EN60204-1, ENISO13849-1, stainless steel 316 body. This version has IP69K enclosure EN62061 and UL508. protection (maintained by a double seal lid gasket) and can be high pressure hosed with detergent at high temperature. 9/33 2TLC172001C0202 ABB Safety HandbookTechnical data MKey5 series Article number 4 1 3 Standard 5 6 2 MKey5 - 12N 2TLA050003R0100 Mkey5+ - 40N 2TLA050003R0101 Stainless steel head MKey5 - 12N 2TLA050003R0110 MKey5+ - 40N 2TLA050003R0111 Actuator Full stainless steel 1.Standard Key for plastic head 2TLA050040R0201 MKey5Z - 12N 2TLA050003R0120 2.Standard Key for SS head 2TLA050040R0202 3. Flat Key 2TLA050040R0220 MKey5+Z - 40N 2TLA050003R0121 4.Flexible Key with plastic housing 2TLA050040R0221 MKey5ZX (EX) 2TLA050003R0125 5.Flexible Key with metal housing 2TLA050040R0203 Level of safety 6.Flexible Key with SS housing 2TLA050040R0204 ENISO 13849-1 Up to PL e/Cat. 4 depending upon (Key always in Stainless steel) system architecture EN 62061 Up to SIL3 depending upon system architecture Safety data 6 2.5 x 10 operations at 100mA load Mechanical reliability B 10d 35 years Proof test interval (life) 356 years (8 cycles per hour/24 MTTF d hours per day/365 days) Utilisation category AC15 A300 3A Force/travel for 6 mm positive opening Acuator entry mini. radius 175 mm Standard Key 100 mm Flexible Key Max. approached/withdrawal 600 mm/s speed Actuator Stainless steel Dimension MKey5 Mechanical life 1 million switch operations Rated insulation/withstand voltage 500VAC/2500VAC 9 Vibration resistance IEC 68-2-6, 10-55Hz+1Hz, excursion: 0.35 mm, 1 octave/min Contacts 2NC + 1NO (actuator key inserted) (NC are direct opening action) Thermal current (lth) 10A Enclosure protection MKey5 IP67 MKey5Z(X) IP69K and IP67 Operating temperature -25C to +80C Conduit entries 3xM20 Material MKey5 Polyester or/and stainless steel 316 MKey5Z(X) Stainless steel 316 Colour Red or stainless steel Dimension MKey5Z Mounting position Any Mounting bolts Body 2 x M5, actuator 2 x M5 For all MKey the normally closed (NC) circuits are closed Explosion Proof version (X) when the guard is closed (actuators inserted). Classification Ex d IIC T6 (-20C Ta +60C) Gb 6.80 6 0mm 2NC 1NC Ex tb IIIC T85C 11/12 Open (-20C Ta +60C) Db 21/22 Open 33/44 Open Rated Voltage 250V AC/DC Rated Current 2 pole 4A Contact block configurati- Contacts at withdrawal of actuator 4 pole 2.5A on 2NC, 1NO ABB Safety Handbook 2TLC172001C0202 9/34