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6
6-22
6.6.2
Assignment with two-channel actuators: Use of DO
terminals
The segment circuit of the VersaPoint system is safely switched via the appropriate wiring
with jumpers (see Figure 6-5 on page 6-17). In the event of a safety demand, the voltage
to the safety-related segment circuit is disconnected by output OUT1. Therefore, the
actuator supply for all DO terminals that are installed in the safety-related segment circuit
is disconnected. Only terminals that are specifically designed for the safety-related
segment circuit may be used. The outputs of standard DO terminals can be controlled
individually via process data, however their disconnection is not safety-related. In the event
of a safety demand, the IC220SDL840 safety-related segment circuit and all the outputs of
DO terminals connected in the safety-related segment circuit are switched off regardless
of the actual switching state of the standard outputs.
IB IL 24
PWR IN/2-F ...
IC220SDL840
D
UM
UM
1
0
E
2
IN1
PWR IN/2-F
PWR IN/2-F
1
2
1
2
1
2
1
2
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
4
4
4
4
4
4
4
4
Figure 6-7
Two-channel actuators in the safety-related segment circuit
K11 (R) and K12 (R) represent the forcibly guided N/C contacts of the relay. Connect these
contacts via safe digital inputs. Evaluate the readback and thus the state of the switching
elements in your safe application.
WARNING: Loss of safety function
Connect the actuator ground directly to terminal point GND of the DO terminal.
An external ground may not be used.
The loads can also be connected in parallel to one standard output.
User manual IC220SDL840 - May 2018
IL SAFE
IB IL 24
IB IL 24
DO 8 ...
DO 8 ...
FS
D
D
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
IN2
DO 8
DO 8
1
2
1
2
1
2
1
2
1
2
1
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
K11
K12
M
IB IL 24
PWR IN ...
IB IL 24
DI 16 ...
D
1
UM
1
1
1
1
2
2
2
2
2
2
3
3
3
3
4
4
4
4
DI16
PWR IN
1
2
1
2
1
2
1
2
2
1
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3
3
3
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
5
5
5
5
5
5
5
5
6
6
6
6
6
6
6
6
K11 (R)
K12 (R)
77220016
GFK-2734
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