ABB Tina 7A Service Manual Page 10

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888-282-2123 • www.jokabsafetyna.com
ABB JOKAB SAFETY
4:10
Automatic Reset
Automatic reset is selected when B1,
X1 and X4 are connected. The relay
outputs are then activated at the same
time as the inputs.
Manual Supervised Reset
The manual supervised reset contact
connected to input X1 must be closed
and opened in order to activate the
relay output.
Testing External
Contactor Status
Contactors, relays and valves can be
supervised by connecting `test’ con-
tacts between B1 and X1. Both manu-
ally supervised and automatic reset
can be used.
Vital 1 Reset Connections
Relay Outputs
The Vital 1 has two (2 NO) safety outputs.
In order to protect the output contacts it
is recommended that loads (inductive) are
suppressed by fitting correctly chosen
VDRs, diodes etc. Diodes are the best arc
suppressors, but will increase the switch
off time of the load.
Connection of S1
Even number of units in series (Eden+
Spot+Tina) requires a connection be-
tween B1 and S1. S1 is not connected
at odd number of units.
See drawing below gure A and other
examples in the book.
Vital 1 Output Connections
Information Outputs
Vital 1 has a switching relay output for
information. The function is determined
by a DIP switch.
The DIP switch position 1 (original posi-
tion) is the information output Y14 inter-
nally connected to 0V and +24 V
as per:
Y14 is closed to 0V (B2) internally
when Vital 1 has not been reset.
Y14 is closed to +24 V (B1) when
Vital 1 has been reset.
In DIP switch position 2 (the purpose
of the function is to start/restart block,
RES) the information output Y14 is inter-
nally connected to 0V and +24 V as per:
Y14 is internally closed to 0V (B2)
when the dynamic safety loop is
open or when the dynamic safety
loop is closed and Vital 1 has been
reset.
Y14 is internally closed to +24 V (B1)
when the dynamic safety loop is
closed but Vital 1 has not been reset
(RES).
Vital 1 Connection of Safety Devices
B1
Vital 1
Y14
B1
B2
+24V
0V
Vital 1
Y14
B1
B2
0V 0V
+24V
0V
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