Application examples for conventional PSRclassic safety relays
102597_en_03 PHOENIX CONTACT 33 / 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. Stop category 0 describes an immediate stop by removal of power by interrupting a
machine or drive element in accordance with EN 60204-1.
3. Proven components and proven safety principles in accordance with EN ISO 13849-2
must be used when applying category 1.
4. Occurrence of a fault can lead to the loss of the safety function.
5. The connecting cables for the emergency stop control device should either be laid sep-
arately or protected against mechanical damage.
6. 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 but-
ton S1.
The emergency stop button closes enable circuit S11
and S12 of the safety relay.
The circuit is enabled via the reset button.
2. Press reset button S2. Contactor K3 is activated.
Stop Action Result Diagnostics
1. Press emergency stop button
S1.
The safety function is triggered and contactor K3 drops
out.
Power
K1
K2
Power
K1
K2
Power
K1
K2
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