Test; Wiring Options - ASO Safety Solutions SK 31 Manuel D'utilisation

6.3 Test

For a standard-compliant design of the protection, the primary machine control must perform a test
prior to each dangerous movement or during the non-dangerous phase/movement of the machine.
Upon application of the test signal, the output terminal of the switching unit must open. This change
in switching state must be evaluated by the primary machine control. If the test result is correct, the
machine control then initiates the movement or the next work step. Otherwise, the control must output
an error message and the power-driven work equipment (e.g. motor) must receive a switch-off signal
from the machine control. The available test signal can be selected with the DIP slide switch.
Power
Actuate
Fault
S1
12 13 14 Test X1 X2
Signal
OUT
Test Signal
S1 B
S1
A
DIP slide switch S1

6.4 Wiring options

U 12 V ... 28 V AC/DC
Test
With testing by the control, the SK 31 system satisfies the Cat. 2 requirements
in accordance with EN ISO 18349-1:2008 "Safety-related parts of control
systems".
Without testing, the operation or wiring of the SK 31 satisfies no specific
safety requirement.
12-24 V PE L1 N
AC/DC
IN
Test signal connection terminals
AC/DC
AC/DC
Characteristics of the signal
Test Signal
S1 B
S1
A
Test signal S1 Pos. "A"
Test signal S1 Pos. "B"
Switching outputs
DC
DC
17