Application examples using the modular safety relay system
102597_en_03
PHOENIX CONTACT
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, K4, K5, and K6 have mirror contacts in accordance with EN 60947-4-1.
3.
Stop category 0 describes an immediate stop by removal of power by interrupting a
machine or drive element in accordance with EN 60204-1.
4.
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
Diagnos-
tics,
KS1
Diagnos-
tics,
KS2
1.
Unlock emergency stop but-
ton S1.
The emergency stop button closes the first
enable circuit via S10, S11, and S12 and closes
the second enable circuit via A2 and S22 of the
safety relay.
2.
Press reset button S2.
Contactors K3 … K6 are activated and the mir-
ror contacts (N/C contacts of K3 … K6) are
opened in the reset circuit.
Stop
Action
Result
Diagnostics
Diagnostics
1.
Press emergency stop button
S1.
The safety function is triggered and contactors
K3 … K6 drop out.
In the reset circuit, the mirror contacts of
K3 … K6 are closed.
Power
IN 1
IN 2
K1
K2
K1
K2
Power
IN 1
IN 2
K1
K2
K1
K2
Power
IN 1
IN 2
K1
K2
K1
K2
Summary of Contents for 2702924
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