6
GFK-2734
Chapter 6 Connection examples for the safe relay outputs and the safety-related segment circuit
6-19
6.6.1
Assignment with single-channel actuators
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.
Figure 6-6
Single-channel actuators in the safety-related segment circuit
Key:
IL SAFE: Safety-related segment circuit
K11 (R) represents the forcibly guided N/C contact of the relay. Connect this contact via a
safe digital input. Evaluate the readback and thus the state of the switching element 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.
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D
DO 8
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UM
PWR IN
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DI16
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IC220SDL840
IB IL 24
DO 8 ...
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D
DO 8
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IB IL 24
DO 8 ...
IB IL 24
DI 16 ...
IB IL 24
PWR IN ...
77220015
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D
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IN1
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IN2
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K11 (R)
M
K11
IL SAFE
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UM
UM
E
PWR IN/2-F
PWR IN/2-F
IB IL 24
PWR IN/2-F ...