How does the "Dead man's switch" or "Dead man's handle" position work on a controller handle?

Technological description

The handle grip comprises a fixed part (lower section) and a moving part (upper section).
Action on the upper part of the handle grip (pressing down) drives a sliding rod inside the control lever.
This rod actuates a moving retainer which causes a change in electrical state of the contact element on the lower part of the mechanism, regardless of the position of the control lever.

Operation

In normal operation, the operator must maintain pressure on the handle grip to operate the machine.
If the operator releases pressure (e.g. feels ill and passes out), even if they are still holding on to it, the electrical contact at the base will change state.

Released for:Schneider Electric UK