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5
Operation
3-position button
The three different positions of the push button correspond to three different positions as shown in the figure below.
Position 1 – "Standby position":
Button free, i.e. not pressed in.
The process can not be run.
Waiting to be pressed to its midpoint position
("running position").
Position 2 – "Running position":
The push button is pressed to its midpoint
position.
The process can be run.
The process will stop if the button is released or is
pushed to its end position ("stopped").
Position 3 – "Stop position":
The push button is pressed to its end point.
The process is stopped by the control device.
Starting the process requires that the button is
fully released ("standby"), and then pressed to
midpoint position ("driving mode").
Front and top buttons
The front and top buttons are user defined and can be applied, for example for start/stop of individual movements,
etc. The buttons are not safe and may only be used for subordinate functions.
Anti-cheat-protection
The anti-cheat protection has two requirements that must be met in order to determine whether JSHD4 is being
used properly.
1 ) A capacitance sensor determines whether the device is being held by hand.
2 ) An accelerometer determines whether the device is in motion.
Misuse will be reported if the unit is not held in one hand or if 20 seconds have passed with no movement
registered.
NOTE! Not all models are with optional front and/or top buttons, or anti-cheat protection (see "Overview of models"
below).
Warning! The front and/or top buttons, as well as the anti-cheat protection are connected to a non-safe node and
must never be used for any safety function. They can enhance safety, but must never be used alone, and always
in combination with other safety functions.
2TLC172072M0201, rev. F
2018-06-01
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www.abb.com/jokabsafety
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