User Information
2
Safety Emergency Stop Relay SR3D
E10-2
Ver. B
E61-139-00
Fig. 1:
Dual channel emergency stop
with short circuit and earth fault
detection.
(category 4, up to PL e / SIL 3)
Advice: Follow the guidelines in „Electrical Connection“ during the start-up.
Commissioning
Procedure
1. Input circuit:
Depending on the risk evaluation choose one of the wiring
diagrams in „Applications“ (Fig. 1 to 5).
2. Choose start mode:
Connect the start button with S11 and S21 for monitored
manual start or connect S21 with S12 directly for automatic
start (Fig. 6 or 7).
Warning:
If “Automatic start” is set, bear in mind that the safety
contacts will switch immediately after the power supply is
connected. If “Monitored manual start” is set, the start
button must be opened after wiring.
3. Feedback loop:
If external contactors or extension modules are used,
connect them according to Fig. 8 or Fig. 9.
4. Power supply:
Connect the power supply to A1 and A2 (Fig. 10).
Cau-
tion: Power must not yet be activated.
5. Starting the device:
Switch on the operating voltage.
Warning:
If the “Automatic start” starting behavior is set, the safety
contacts will close immediately.
If the “Monitored manual start” starting behavior is set, close
the start button to close the safety contacts.
LEDs
K1 and K2 are lit.
6. Triggering safety function:
Open the emergency stop circuit by actuating the connec-
ted safety switch. The safety contacts open immediately.
7. Reactivation:
Close the emergency stop circuit. If “Automatic start” is
selected, the safety contacts will close immediately.
If the “Monitored manual start” starting behavior is set, close
the start button to close the safety contacts.
Fig. 9:
Monitored manual start.
It is monitored that the start button
has been opened before the
safety switch is closed.
(Condition:
power supply may not be inter-
rupted)
Fig. 10:
Automatic start.
Maximum allowable delay when
closing the safety switches at
S12 and S13:
S12 before S13: 300ms
S13 before S12: no limit
Warning:
Safety contacts will be
activated immediately at
power-on.
Depending on the application or the result of the risk assessment according to EN ISO 13849-1, the device must be wired as
shown in Fig. 1 to Fig. 14.
Applications
Fig. 3:
Single channel emergency stop
with earth fault detection.
(category 1, up to PL c / SIL 1)
Fig. 2:
Dual channel emergency stop
with earth fault detection.
(category 3, up to PL d / SIL 2)
Fig. 4:
Dual channel safety guard
monitoring with short circuit and
earth fault detection.
(category 4, up to PL e / SIL 3)
Emergency Stop
Circuit
Start Behavior
Safety Emergency Stop Relay SR3D
Notice:
In order to activate earth
fault monitoring, S10
must be connected to PE
(protective earth) on the
AC 115 V / 230 V de-
vices. With AC/DC 24 V,
connect PE only to the
power supply unit ac-
cording to EN 60204-1.
Fig. 7:
Two channel emergency stop with
pnp-outputs/OSSD-outputs
with its own short circuit monito-
ring.
(category 4, up to PL e / SIL 3)
Fig. 11:
Feedback loop for monitored
manual start:
The feedback loop monitors
contactors or the expansion
modules .
Feedback Loop
Fig. 12:
Feedback loop for automatic
start:
The feedback loop monitors
contactors or the expansion
modules .
Power supply
and
Safety contacts
Fig. 13:
Power supply A1 and A2.
(Power supply according to techn.
Data)
Fig. 14:
Connecting load to safety con-
tacts.
(Figure shows example.
Voltage „+V“ according to techn.
Data)
Fig. 6:
Dual channel emergency stop
without fault-detection of the
safety switch and the wires.
(category 3, up to PL d / SIL 2)
Fig. 5:
Single channel emergency stop
without fault-detection of the
safety switch and the wires.
(category 1, up to PL c / SIL 1)
Fig. 8:
Single channel emergency stop
with a safety output. Wired
inside a control cabinet
(minimum degree of protection
IP54)
(category 4, bis PL e / SIL 3)
