Technical data

5/19 2TLC172001C0202 | ABB Safety Handbook
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Time delay - Vital 3
Output group 2 can have disconnection delay by connecting inputs 0.5s and 1.0s being connected to +24 V. The system is
binary, which means that the time values of the inputs are added together to give the total delay time.
1.0s0.5s
+24 V
No delay
1.0s0.5s
+24 V
0.5 s delay
1.0s0.5s
+24 V
1.0 s delay
1.0s0.5s
+24 V
1.5 s delay
Connection of reset - Vital 3
Manual monitored reset
For manual resetting, a push button must be connected between X1 (Reset 1) or X11 (Reset 2) and +24 V. The monitoring
contactors for external devices are to be connected in series with the push button. For manual reset, X4 (for Reset 1) and X14
(for Reset 2) serve as output for resetting the indicator lamps.
Automatic reset
For automatic reset, X1 and X4 (Auto reset 1) or X11 and X14 (Auto reset 2) must be connected to +24 V. Monitoring contacts
for external devices must be connected between +24 V and X1 (Auto reset 1) or X11 (Auto reset 2) . If monitoring contacts are
not used, X1 and X11 must be connected to +24 V.
X4X1+24 V
0 V
X11 X14
X4X1
+24 V
X11 X14
There are two separate reset functions; Reset 1 and Reset 2. The function of these is depen-
dent on the operating mode selected (see Selection of operating mode). Reset 1 and Reset 2
can be configured for manual or automatic reset independently of each other by means of the
input's Auto reset 1 and Auto reset 2.
Connection of outputs - Vital 3
Q1
Q11
1L
11L
-24 V
Q2
Q12
+24 V
Q13
Connection of safe relay output
The safe relay outputs that are duplicated in series break between 1L-Q1 (output group 1) and
11L-Q11 (output group 2). The loads that break should be fitted with spark arresters to protect
the outputs. The correct selection of VDR-circuit, RC circuit or diode is appropriate. Note that
the diode extends the disconnection time of the load.
Connection of safe transistor output (-24 V)
The safe transistor outputs Q2 (output group 1) and Q12 (output group 2) have an output
voltage of -24 V.
Connection of information output
The non-safe transistor output Q13 is high (+24 V) when the outputs from output group 2 are active. The function is therefore
dependent on the operating mode selected (see Selection of operating mode).
Connection of protection/sensors - Vital 3
Depending on the input function and the number of sensors connected to the safety loop (odd
or even number), the dynamic signal is connected between different terminals;
+24 V
S1T1
S2
T11 R12R11
Input function 1
One of the two opening contacts is connected between T1 and S1 (dynamic signal). The se-
cond opening contact is connected between +24 V and S2 (static signal).
Input function 2
A dynamic signal is transmitted from T11, and depending on the number of sensors in the safety loop, the signal connects
back to R11 (odd number of sensors) or R12 (even number of sensors).