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Operating Instructions
Safety Relay ESM-BT4..
Electrical connection
A safety transformer according to EN 61558-2-6 or
f
a power supply unit with electrical isolation from
the mains must be connected.
External fusing of the safety contacts must be
f
provided.
A maximum length of the control lines of 1,000 m
f
with a conductor cross-section of 0.75 mm² must
not be exceeded.
The conductor cross-section must not exceed
f
2.5 mm².
If the device does not function after setup, it must
f
be returned to the manufacturer unopened. Open-
ing the device will void the warranty.
A suppressor circuit suitable for inductive loads
f
(e.g. free-wheeling diode) is to be provided.
A1
Power supply
A2
Power supply
S11
DC 24 V control voltage
S10
Control line
S21
Start control line
S13
Control line
S14
Control line
S12
Control line
13-14
Safety contact 1 (u)
23-24 /
Safety contact 2 (u/v)
27-28
33-34 /
Safety contact 3 (u/v)
37-38
47-48
Safety contact 4 (v)
Fig. 3: Connections (u = non-time-delayed,
v = time-delayed)
Setup procedure
Notice
The items listed under Electrical connection must
be observed during setup.
1. Wiring emergency stop circuit:
Wire the emergency stop circuit according to the
required Performance Level determined (see Fig.
5 to Fig. 9).
2. Wiring start circuit:
Wire the start circuit according to Fig. 10 or Fig. 11
to set the starting behavior.
Attention: 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. Wiring feedback loop:
If your application provides for external contactors
or expansion modules, connect them to the device
according to Fig. 12 or Fig. 13.
4. Wiring power supply:
Connect the power supply to terminals A1 and A2
(see Fig. 14).
Attention: Wiring only in de-energized state.
5. Setting time delay:
Set the required time delay on the potentiometer (not
necessary for variants with fixed time).
Attention: Tick marks should be regarded only as
a setting aid. Always make sure to measure the
time delay.
6. Starting the device:
Switch the operating voltage on.
Attention: If the Automatic start behavior is set, the
safety contacts will close immediately.
If the Monitored manual start behavior is set, close
the start button to close the safety contacts.
LEDs K1, K2, K3 and K4 illuminate.
7. Activating safety function:
Open the emergency stop circuit by actuating the
connected safety switch. The safety contacts open
immediately or after the time delay set.
Attention: Measure the time delay.
8. Reactivating:
Close the emergency stop circuit. If Automatic
start is selected, the safety contacts will close
immediately.
If the Monitored manual start behavior is set, close
the start button to close the safety contacts.
What to do in case of a fault?
Device does not switch on:
Check the wiring by comparing it to the wiring
f
diagrams.
Check the safety switch used for correct function
f
and adjustment.
Check whether the emergency stop circuit is
f
closed.
Check whether the start button (with manual start)
f
is closed.
Check the operating voltage at A1 and A2.
f
Is the feedback loop closed?
f
Device cannot be switched on again after an
emergency stop:
Check whether the emergency stop circuit was
f
closed again.
Was the start button opened before closing of the
f
emergency stop circuit (with manual start)?
Is the feedback loop closed?
f
If the fault persists, perform the steps listed under
Setup procedure.
If these steps do not remedy the fault either, return
the device to the manufacturer for examination.
Opening the device is impermissible and will
void the warranty.
Maintenance
The device must be checked once per month for
proper function and for signs of tampering and by-
passing of the safety function. Check the wiring of
the device and activate the emergency stop function.
Check the time delay.
The device is otherwise maintenance-free, provided
that it was installed properly.
Disposal
Pay attention to the applicable national regulations
and laws during disposal.
Declaration of conformity
The EU declaration of conformity can be found at
www.euchner.com. Enter the order number of your
device in the search box. The document is available
under Downloads.
6
Service
If servicing is required, please contact:
EUCHNER GmbH + Co. KG
Kohlhammerstraße 16
70771 Leinfelden-Echterdingen
Germany
Service telephone:
+49 711 7597-500
E-mail:
support@euchner.de
Internet:
www.euchner.com
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