Indoors, the use of devices having glued end caps does not present any problems. Safety edges will here often be exposed to aggressive environments, such as oils, cooling agents etc. Water will however rarely occur in substantial amounts. Further, extreme temperatures, ozone and u.v. radiation will seldom be found in high concentrations.

secondary keys and Safety Interlocks

Welcome to Haake Technologies in Germany.

Manufacturer of secondary keys, locks, safety mats, safety edges and bumpers

A few words

When we started, in 1987, to translate our ideas into products like Secondary Keys, we did not have a clue as to where our entrepreneurial trip would end. At the time, production, design, and sales of Secondary Keys took place in our parents’ garage! Our’s 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 Secondary Keys have been designed and successfully launched in the machine safety devices market

. With our subsidiaries and distribution partners for Secondary 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 Secondary Keys, and for this reason we are proud to connect our own name with our secondary keys and services. We look forward to your enquiries. We also welcome your comments and any criticism to secondary keys, as this will help us to improve and to create new solutions.

Advantages of Haake secondary keys

Benefits offered by the trapped-key system, e.g. secondary 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
- secondary 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. secondary keys) with multifold applications for:

safeguarding operators
Automotive industry
Robots
Machine tools
Automation
Packaging machines
Food
Textile
Breweries
Building industry
Chemical industry
Pharmacy
Plastic processing
Oil / gas
Steel
Mining
Power generation / distribution
Environmental protection
Power stations

Switch HST-S and secondary keys

Secondary 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.
Secondary 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.

secondary keys

secondary keys

Here you will find information about secondary keys and: