Operating Instructions
Safety Relay ESM-BA3..
3
Subject to technical modifications; no r
esponsibility is accepted for the accuracy of this information.
© EUCHNER GmbH + Co. KG
2090073
-09
-07/22 V1.1.0 (translation of the original operating instructions)
Applications
Depending on the application or the result of the risk assessment according to DIN EN ISO 13849 1, the device must be wired as shown in Fig. 5 to Fig. 15.
Emergency stop circuit
Fig. 5: Dual-channel emergency stop circuit with
short circuit and ground fault monitoring
(category 4, up to PL e).
Fig. 6: Dual-channel emergency stop circuit with
ground fault monitoring (category 3, up
to PL d).
Fig. 7: Single-channel emergency stop circuit with
ground fault monitoring (category 1, up to
PL c).
Notice:
In order to activate ground fault monitoring, S10
must be connected to PE (protective earth) on the
AC115/230V devices. With AC/DC 24 V, connect
PE only to the power supply unit according to
EN 60204-1.
Wire the start circuit in accordance with the applica-
tion according to Fig. 10 or Fig. 11.
Fig. 8: Dual-channel sliding guard monitoring with
short circuit and ground fault monitoring
(category 4, up to PL e).
Fig. 9: Dual-channel emergency stop circuit with
pnp semiconductor outputs / OSSD outputs
with short circuit detection (category 4,
up to PL e).
Starting behavior
Fig. 10: Monitored manual start. It is monitored
that the start button was opened before
the emergency stop buttons close (pre-
requisite: operating voltage must not be
interrupted).
Fig. 11: Automatic start. Max perm. delay during
closing of the safety switches on S12
and S13:
S12 before S13: 300 ms
S13 before S12: any
Feedback loop
Fig. 12: Feedback loop. Monitoring of externally
connected contactors or expansion mod-
ules.
Fig. 13: Feedback loop with automatic start. Mon-
itoring of externally connected contactors
or expansion modules.
Power supply and safety contacts
Fig. 14: Connection of the power supply to terminals
A1 and A2 (power supply according to the
technical data).
Fig. 15: Connection to switching loads on safety
contacts (example contact configura-
tion. Differing according to device type.
Switching voV corresponding to
technical data).
