22
With testing by the control, the ELMON relay 34-32 system satisfies the Cat. 2 requirements
in accordance with EN ISO 13849-1:2015
"Safety-related parts of control systems"
.
Without testing, the operation or wiring of the ELMON relay 34-32 satisfies no
specific safety requirements.
English
Safety Relay
8.4 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. The test is
intended to ensure the proper function of the safety relay. After 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. If the machine control detects an
error fault in the safety device, the machine control must maintain a safe state until the error is rectified.
If DIP switch
S1
is in switch position "Off", the test is performed upon application of a voltage to terminals
T1
and
T2
; if "On", the test is performed if no voltage is applied.
8.5 Characteristics of the signal
Switching output (symbolic)
Test signal
S1
Pos. "On":
Test signal
S1
Pos. "Off":
8.6 Connection options for the test signal
Voltage
U
Test
12 V ... 28 V DC or AC voltage
Test duration
T
Test
120 ms
B1
Z1 Z2 T1 T2
AC/DC
B1
Z1 Z2 T1 T2
AC/DC
B1
Z1 Z2 T1 T2
+DC
B1
Z1 Z2 T1 T2
+DC
