4
Operating Instructions
Safety Contact Expansion ESM-TE3..
Correct use
The ESM-TE3.. is an expansion module that can be
operated with any safety relay from the EUCHNER
ESM series, e.g. ESM-BA2.. or ESM-BA3.., in order
to permit delayed switch-off of machine parts. This
could be the case if it is safer to return a tool to
its initial position first instead of stopping operation
immediately, for example. The ESM-TE3.. was de-
signed as a component for a modular system: any
combination of ESM-TE3.. units and non-time-delayed
contact expansions ESM-ES3.. can be interconnect-
ed with just a few lines, permitting realization of an
overall system with different times and the specific
number of safety contacts required.
Before the device is used, a risk assessment must
be performed on the machine, e.g. according to the
following standards:
f
EN ISO 13849-1
f
EN ISO 12100
f
IEC 62061.
Correct use includes observing the relevant require-
ments for installation and operation, particularly
based on the following standards:
f
EN ISO 13849-1
f
EN 60204-1
f
IEC 62061.
Important!
f
The user is responsible for the integration of
the device in a safe overall system. For this
purpose, the overall system must be validated,
e.g. according to EN ISO 13849-2.
f
The device user must assess and document
remaining risks.
f
If a data sheet is included with the product, the
information on the data sheet applies.
Safety precautions
WARNING
f
Installation and setup of the device must be
performed only by authorized personnel.
f
Observe the country-specific regulations when
installing the device.
f
The electrical connection of the device is only
allowed to be made with the device isolated.
f
The wiring of the device must comply with the
instructions in these operating instructions,
otherwise there is a risk that the safety function
will be lost.
f
It is not allowed to open the device, tamper with
the device or bypass the safety devices.
f
All relevant safety regulations and standards are
to be observed.
f
The overall concept of the control system in
which the device is incorporated must be vali-
dated by the user.
f
Failure to observe the safety regulations can re-
sult in death, severe injuries and serious damage.
f
Note down the version of the device (see type la-
bel
Vx.x.x
) and check it each time prior to setup.
If the version changes, the use of the device in
the overall application must be validated again.
Features
f
3 safe, redundant, time-delayed relay outputs
1 auxiliary contact (error monitoring)
f
Activation via safety relay from the EUCHNER
ESM series
f
Continuously adjustable delay time (1 … 30 s) or
fixed delay time (ESM-TE3...-05S)
f
Modular, freely configurable safety system
f
Corresponds to STOP category 1
f
Error monitoring by safety relay
f
Indication of the switching state via LED
f
Up to PL d, category 3, SILCL 2
Function
The time-delayed emergency stop safety switching
device ESM-TE3.. in combination with a safety relay
from the EUCHNER ESM series is designed for safe
isolation of safety circuits according to EN 60204-1
and can be used up to safety category 3, PL d
according to EN ISO 13849-1.
The ESM-TE3.. provides a control voltage of DC 24 V
at terminal
S11
. In order for the ESM-TE3.. to switch
together with the connected safety relay, the control
voltage at
S11
is connected to terminals
S15
and
S16
of the ESM-TE3.. via one of the safety contacts
of the safety relay (see Fig. 5 and Fig. 6). The safety
contacts of the safety relay close when the safety
relay is activated, and the DC 24 V control voltage
from terminal
S11
is then at terminals
S15
and
S16
of the ESM-TE3... The safety contacts of the
ESM-TE3.. switch immediately.
The safety relay disconnects the control voltage
when the safety switch is operated, and the safety
contacts of the ESM-TE3.. open after the time set
on the ESM-TE3.. elapses (the power supply must
be present during the time sequence).
If a fault occurs in the ESM-TE3.., this is detected by
the safety relay via terminals
S25
and
S26
.
Independent operation without safety relay is
not possible.
Fig. 1: Block diagram for ESM-TE3..
Mounting
As per EN 60204-1, the device is intended for in-
stallation in control cabinets with a minimum degree
of protection of IP54. It is mounted on a 35 mm
mounting rail according to DIN EN 60715 TH35.
Fig. 2: Mounting/removing
Electrical connection
f
When the 24 V version is used, a safety transform-
er according to EN 61558-2-6 or a power supply
unit with electrical isolation from the mains must
be connected.
f
External fusing of the safety contacts must be
provided.
f
A maximum length of the control lines of 1,000 m
with a conductor cross-section of 0.75 mm² must
not be exceeded.
f
The conductor cross-section must not exceed
2.5 mm².
f
If the device does not function after setup, it must
be returned to the manufacturer unopened. Open-
ing the device will void the warranty.
A1
Power supply
A2
Power supply
S11
DC 24 V control voltage
S10
Control line
S15
Control line
S16
Control line
S25
Error monitoring
S26
Error monitoring
17-18
Time-delayed safety contact 1
27-28
Time-delayed safety contact 2
37-38
Time-delayed safety contact 3
Fig. 3: Connections
Setup procedure
Notice
The items listed under
be observed during setup.
1. Wiring ESM-TE3..:
Wire the ESM-TE3.. with the EUCHNER safety relay
according to your application (see Fig. 5 and Fig. 6).
2. Wiring safety relay:
Wire the safety relay according to the required
Performance Level determined (see operating
instructions for the safety relay).
3. Wiring feedback loop:
Wire the feedback loop as shown in Fig. 7 and Fig. 8.
4. Wiring power supply:
Connect the power supply to terminals
A1
and
A2
Attention:
Wiring only in de-energized state.
5. Setting delay time:
Set the desired time delay on the rotary knob and
seal the knob with the supplied sticker. (For fixed
time variant ESM-TE3..-05S this step is not required
because a fixed delay time of 0.5 seconds is set).
Attention:
Tick marks should be regarded only as
a setting aid. Always make sure to measure the
delay time.
6. Starting the device:
Switch the operating voltage on.
Attention:
If the
Automatic start
behavior is set
on the safety relay, the safety contacts will close
immediately.
If the
Monitored manual start
behavior is set, close
the start button to close the safety contacts.
The LEDs
K1
and
K2
on the safety relay and on the
ESM-TE3.. illuminate.
7. Activating safety function:
Open the emergency stop circuit by actuating the
connected safety switch. The safety contacts of the
safety relay open immediately; the safety contacts
of the ESM-TE3.. open after the time set on the
rotary knob elapses.
Attention:
Measure the delay time.
