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A
IC220SDL840
OUT0_Ch1_13
OUT0_Ch1_14
OUT0_Ch2_13
OUT0_Ch2_14
GFK-2734 Chapter 6 Connection examples for the safe relay outputs and the safety-related segment circuit
6.5
Two-channel assignment of floating contacts
For two-channel assignment, the safety relays for both channels operate together. This
assignment is fixed and cannot be parameterized (see Section "Two-channel" on
page 5-2).
It is possible to monitor external loads and the wiring for errors. In this case, a clock output
(UT1 or UT2) with the associated alarm input must be used. Activate this function in the
parameterization (IN1 or IN2, see Section "Parameterization of the safe relay outputs" on
page 5-2).
If you are using monitoring via one or both alarm inputs with two-channel assignment,
set the corresponding alarm input to "Evaluate" for both channels of the output.
6.5.1
Monitoring via common readback
Monitoring is common for both channels of an output. In this case, the second alarm input
is available for other outputs.
24 V
400 V
K1
24 V
K2
M
UT1 (UT2)
IN1 (IN2)
Figure 6-3
B
IC220SDL840
K1 (R)
K2 (R)
Two-channel assignment of floating contacts with common readback
24 V
OUT0_Ch1_13
K1
OUT0_Ch1_14
OUT0_Ch2_13
K2
OUT0_Ch2_14
UT1 (UT2)
IN1 (IN2)
6
400 V
K1 (R
K2 (R
M
6-9
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