Technical data

888-282-2123 • www.jokabsafetyna.com
ABB JOKAB SAFETY
4:13
Three Connection Alternatives
According to PL e (EN ISO 13849-1), connection of
sensors/adapter units in the Vital safety circuit must
be made per the connection examples.
Example
Use separate connection cables from each sensor/
adapter unit to the Vital safety controller. Interconnec-
tions to be made via suitable terminals in the control
cabinet.
Example
Use Tina4A/Tina8A connector blocks to simplify the
connection of externally mounted sensors/adapter
units. Only Tina4A/Tina8A connector blocks may be
used. Use of any other connector blocks will not meet
the safety circuit requirements.
Example
Use M12-3A and M12-3B “Y” connectors to connect
sensors in series/parallel.
Cable Lengths and Number of Sensor/Adapter
Units for the Three Connection Examples
In order to determine the number of sensor/adapter
units that can be connected to a Vital 1 unit it must
be remembered that 1 (one) Spot T/R is equivalent to
5 (ve) Eden or Tina units. Units in parallel are equal
to one unit. The following examples provide guidance
as to possible congurations and cable lengths using
suitable cables.
Example
Up to 1000 meters (0.75 mm
2
or 0.34 mm
2
conduc-
tors) in total can be connected to the sensors/units in
this example. The connection is equivalent to 9 Eden
or Tina units.
A maximum of 30 Eden or Tina units can be con-
nected to the Vital 1 unit on a maximum cable length
of 500 meters (0.75 mm
2
conductors) or 300 meters
(0.34 mm2 conductors).
Example
Up to 600 meters (0.75 mm
2
conductors) to Tina 8A
and 10 meter cables type M12-C1012 (0.34 mm
2
) to
each sensor/unit connected to the Tina 8A. This con-
nection example is equivalent to 17 Eden or Tina units.
A maximum of 3 Tina 8A units, equivalent to 27
Eden/Tina units (= 3 x 8 connected to Tina 8A + 3 Tina
8A) can be connected to one Vital 1 with a total cable
length of 600 meters (0.75 mm
2
). Up to 6 Tina 4A
units can be connected to one Vital 1 (equivalent to
30 Eden/Tina units) with a total cable length of
600 meters (0.75 mm
2
) to Tina 4A.
Example
Either 2 x 500 meter cables (0.75 mm
2
) from the con-
trol cabinet and 10 meter cables (0.34 mm
2
) to each
sensor/unit or 2 x 10 meter cables (0.75 mm
2
) from the
control cabinet and 200 meter cables (0.75 mm
2
)to
each sensor/unit. The connection is equivalent to 16
Eden or Tina units.
A Total of 30 Eden/Tina units can be connected
using a maximum cable length of 1000 meters
(0.75 mm
2
) or 400 meters (0.34 mm
2
). If the power
supply is only fed from one direction (from one end
of the network) the total cable length is reduced
to approx 300 meters (0.75 mm
2
) and 100 meters
(0.34 mm
2
).
Connection Advice for Dynamic
Sensors to Pluto and Vital
Sensors can be connected in many different ways.
Here is some advice that can make connection better
and more stable. The advice is general, but particularly
applicable to the use of Tina 4A and Tina 8A units.
• Never have more than the recommended
number of sensors in the loop.
• If possible use a switched main power
supply that can deliver a stable 24 VDC.
• In the sensor system, use as short cables
as possible.
• When connecting a Tina 4A or Tina 8A unit, the
supply voltage at the terminal (out at the unit) must
not be less than 20 Volts.
• Use screened cable, preferably 0.75 mm2 or thicker,
from the apparatus enclosure and ground it at one
end, for example at the apparatus enclosure, not at
both ends.
• Do not route the signal wiring close to heavy current
cabling or close to equipment that gives off a lot
of interference, such as frequency converters for
electric motors.
• Never connect “spare” conductors.
• If M12-3B are used for connection of a parallel loop,
with supply to the sensors from two directions, the
loop must be as short as possible. This is because
the conductors that are not being used are also
connected, which increases the capacitive load and
reduces the stability of the system.