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Safety
S20 Safety Switches must be connected in such a way that a dangerous state can
only be activated while the protective device is closed and so that the dangerous
state stops upon opening of the protective device. It must not be used if the point
of operation can be accessed during the lag time before the dangerous state has
ended.
Connection conditions:
• the dangerous state can only be activated while the protective device is
closed
• opening the protective device while the machine is running triggers a STOP
command and ends the dangerous state
Furthermore, the S20 Safety Switch must not be used under the following condi-
tions:
• high concentration of dust particles in the surrounding area
• rapidly changing ambient temperature (leads to condensation)
• in the event of strong physical shocks
• in explosive or easily flammable atmospheres
• the mounting locations are not sufficiently stable
• the safety of multiple persons is dependent on the function of this Safety
Switch (e.g. nuclear power plants, trains, aircraft, motor vehicles, incinera-
tors, medical devices)
For machines with longer slowdowns, a Safety Locking Device must be used.
Handling the Safety Switch:
Observe the permissible environmental conditions for storage and operation
(see chapter 14 "Technical data").
Immediately replace damaged Safety Switch according to these instructions
(see chapter 6 "Mounting").
Use cable gland, insulation materials and connecting wires of the appropriate
protection rating.
Protect the Safety Switch from penetrating foreign bodies (e.g. shavings, sand
and blasting agent).
Before performing painting work, cover the actuation slot, actuator and name
plate.
Immediately clean any contamination from the Safety Switch that impacts func-
tion according to these instructions.
Make no structural changes to the Safety Switch.
CTi Automation - Phone: 800.894.0412 - Fax: 208.368.0415 - Web: www.ctiautomation.net - Email: info@ctiautomation.net
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