Application examples using the modular safety relay system
102597_en_03 PHOENIX CONTACT 111 / 136
Function description
For additional diagnostic descriptions, please refer to Section 8.
Notes on theapplication
example
1. The emergency stop control device is positive opening in accordance with EN 60947-5-1.
2. Contactors K3 and K4 have mirror contacts in accordance with EN 60947-4-1.
3. When using the safety relay, take into consideration the maximum permissible number
of cycles for observing the SIL/PL safety characteristics in the specific application. The
safety characteristics can be found in the AH EN SAFETY CHARACTERISTICS appli-
cation note or the SISTEMA library.
Start Action Result Diagnostics
1. Unlock emergency stop
button S1.
The emergency stop button closes the first enable circuit via
S10, S11, and S12 and the second enable circuit via A2 and
S22 of the safety relay.
The circuits are enabled via the reset button.
2. Press reset button S2. Contactors K3 and K4 are activated and the mirror contacts
(N/C contacts of K3 and K4) in the reset circuit are opened.
Stop Action Result Diagnostics
1. Press emergency stop
button S1.
The safety function is triggered and contactors K3 and K4
drop out.
In the reset circuit, the mirror contacts of K3 and K4 are
closed.
Power
IN 1
IN 2
K1
K2
Power
IN 1
IN 2
K1
K2
Power
IN 1
IN 2
K1
K2
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