Key-Operated Mechanical Interlocks Made by Haake Technik, Germany

http://www.Haake-Technik.com is not only a merchant, but a developer, producer and supplier, among other things, of trapped-key interlocking systems. Haake's trapped key interlock systems define a pre-determined safety sequence. So this sequence has to be followed each time dangerous equipment is accessed or operated. In this video you see a machine with double-key door interlock and teach mode. The operator takes one key with him as a „personal safety key“. This key is also be used for activating the teach mode. To restart the machine, all keys have to be returned. Haake manufactures safety systems for use in a wide range of industries to make sure a sequential scheme is followed when access is needed to hazardous areas or equipment. HST key interlock systems are developed and adapted to each user’s requirements. The concept clarifies which key or keys an operator must use at each step in the sequence.