Valuable space is won on the crowded control panel. Further, of course, a not existing device cannot go defective. The use of a break contact guarantees a high safety level.
primary keys and Safety Interlocks
Welcome to Haake Technologies in Germany.
Manufacturer of primary keys, locks, safety mats, safety edges and bumpers
A few words
When we started, in 1987, to translate our ideas into products like Primary Keys, we did not have a clue as to where our entrepreneurial trip would end. At the time, production, design, and sales of Primary Keys took place in our parentsí garage! Ourís would have been a short story, if not for the support of our very first customers and suppliers. Because of their original commitment to us, absolute customer orientation is the number one priority for our colleagues and us.Since our founding, several product groups like Primary Keys have been designed and successfully launched in the machine safety devices market.
With our subsidiaries and distribution partners for Primary Keys in the major industrial countries, we are able to serve our customers in all aspects of labor safety. As a family-owned company, we attach the highest importance to quality to Primary Keys, and for this reason we are proud to connect our own name with our primary keys and services. We look forward to your enquiries. We also welcome your comments and any criticism to primary keys, as this will help us to improve and to create new solutions.
SAFETY INTERLOCKS and primary keysHigh safety.
Primary Keys: Such guard locking devices are for instance key-operated mechanical interlocks, also called trapped-key systems. They are based on the easy-to-understand premise that a key cannot in two places at the same time - it can for instance be inserted in a switch OR be used for opening a guard.
Advantages of Haake primary keysBenefits offered by the trapped-key system, e.g. primary keys:
- high safety, individual codes
- only pre-determined sequences securing safety are possible
- no spare tongue "in the pocket"
- no cables to the individual guards (cost saving, faults prevented)
- easy retro-fitting
- primary keys have locking feature
- particularly suited when there are different energy sources for the machine (electric, pneumatic, ...)
- in areas where people might get trapped: personal safety key
- simple possibilities for teach in
- time delay due to key transfer between switch and guard interlock - run-down processes come to a standstill (if necessary, extend by additional unit)
Haake offers safety interlocks (e.g. primary keys) with multifold applications for:
Oil / gas
Power generation / distribution
Switch HST-S and primary keysPrimary Keys: The switch HST-S is used for isolating the machine, in order to permit safe access. After the voltage has been switched off, the previously trapped key can be removed and used for the next step in the sequence, e.g. opening a guard.
Primary Keys: The unit is available as an enclosed (IP 65) or a panel mount version. Versions with multiple locks (enclosed version sheet-steel up to 4, panelmount version up to 10) are also available. Further, versions in explosion-proof enclosures (ATEX zones 21 & 22 and 1 & 2) can also be supplied.
Here you will find information about primary keys and: