Electromechanical Solenoid Locking Safety Switch from DOLD
Electromechanical solenoid locking units prevent
the opening of access or safety gates, until a hazardous area
can be entered.
Electromechanical safety switches with a solenoid
locking unit secure that safety gates and covers as
well as other safe guards will remain closed, as long as there
is a dangerous state or a risk of injury to persons. For example
with safety applications like overrun movements of a machine,
high temperatures or systems which are under high pressure
(pneumatic, hydraulic etc.).
An access can only be opened after a release signal was given
from the machine control to the locking unit. As long as the
signal continues, the movable part of the safe guard can be
opened and closed. If no signal applies and the safe guard
is closed, the interlock unit will be activated again and
the machine can be restarted again.
There are two different types of interlock units: on the
one hand the spring powered interlocking (quiescent current)
and on the other hand the magnetic locking of interlock units
switch design 2 with locking
actuator can be removed after a release signal is present