Technical data

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ABB JOKAB SAFETY
4:7
How does a Vital dynamic circuit work?
The dynamic signal consists of a square wave that
is transmitted through the safety circuit. The signal is
inverted at each safety component and is monitored
200 times per second by Vital or Pluto.
The dynamic signal is transmitted as single channel
throughout all the protection in the same safety circuit
between input terminals T1 and R1. If a protection
breaks, the dynamic signal is not transmitted—which
is detected by Vital—which breaks its safe outputs.
Even short circuits across a protection are detected
since the signal is inverted in each sensor (the protec-
tion is then OK), while Vital expects a correctly inverted
signal at the right time.
In this case, an even number of sensors are con-
nected to the safety loop which means that the
dynamic signal will be inverted an even number of
times when it is evaluated by Vital. This is determined
by the terminal inputs S1 and B1 being connected
together. If an odd number of sensors have been con-
nected, connection of S1 is not required. As the sig-
nal is evaluated by Vital at each pulse, i.e. more than
200 times per second, faults and short circuits are
detected within a few milliseconds.
Eden Sensor
monitors that doors
are closed
As the signal is evaluated
by Vital at each pulse, i.e.
more than 200 times per
second, faults and short
circuits are detected within
a few milliseconds.
Smile Tina
Emergency Stop
stops the machine
when there is
a hazard
INCA Tina
Emergency Stop
stops the machine
in case
of danger
Vital Safety Module
monitors the security
sensors in series according
to PLe EN ISO 13849-1
Focus Light Curtain
prevents passage with
integrated muting
function