EUCHNER ESM-TE3xx - Manual

1
User Information
EUCHNER GmbH + Co. KG Kohlhammerstraße 16 D-70771 Leinfelden-Echterdingen Tel. +49/711/75 97-0 Fax +49/711/75 33 16 www.euchner.de [email protected]
Time -Delayed Safety Relay ESM-TE3..
(not for plug-in termnals
and fixed-time types)
As per EN 60204-1, the device is intended for installation in
control cabinets with a minimum degree of protection of
IP54. It is mounted on a 35-mm DIN rail according to DIN
EN 60715 TH35.
• Modular, freely configurable safety system
• Corresponds to STOP category 1
• Fault monitoring by basic device
• Indication of the switching state via LED
• Up to PL d, category 3, SILCL 2
• It is not allowed to open the device, tamper with the de-
vice or bypass the safety devices.
• All relevant safety regulations and standards are to be
observed.
• The overall concept of the control system in which the
device is incorporated must be validated by the user.
• Failure to observe the safety regulations can result in
death, serious injury and serious damage.
Correct Use
The ESM-TE3.. is an expansion module that can be operated with
any basic device 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 developed as a component for a
modular system.
Any combination of ESM-TE3 units and non-time-delayed ESM-
ES3.. expansion blocks can be interconnected with just a few
lines, permitting realization of an overall system with different
times and the specific number of safety contacts required.
Features
• 3 safe, redundant, time-delayed relay outputs
1 auxiliary contact (fault monitoring)
• Activation via basic device from the EUCHNER ESM
series
• Continuously adjustable delay, 1 to 30s or fixed time
delay (ESM-TE3..-05S)
Function
The time-delayed emergency stop safety switching device
ESM-TE3.. in combination with a basic device 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 24V at
terminal S11. In order for the ESM-TE3.. to switch together
with the connected basic device, the control voltage at S11
is connected to terminals S15 and S16 of the ESM-TE3..
via one of the safety contacts of the basic device (see
Wiring section on page 2).
The safety contacts of the basic device close when the
basic device is activated, and the DC 24V control voltage at
terminal S11 is then connected with terminals S15 and S16
of the ESM-TE3... The safety contacts of the ESM-TE3..
switch immediately.
The basic device 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
Electrical
Connection • When the 24 V version is used, a safety transformer
according to EN 61558-2-6 or a power supply unit with
electrical isolation from the mains must be connected.
• External fusing of the safety contacts (4 A slow-blow or 6
A quick-action or 10 A gG) must be provided.
• A maximum length of the control lines of 1000 meters
with a line cross section of 0.75 mm
2 must not be ex-
ceeded.
• The line cross section must not exceed 2.5 mm 2 .
• If the device does not function after commissioning, it
must be returned to the manufacturer unopened. Open-
ing the device will void the warranty.
Installation
Safety
Precautions • Installation and commissioning of the device must be
performed only by authorized personnel.
• Observe the country-specific regulations when installing
the device.
• The electrical connection of the device is only allowed to
be made with the device isolated.
• The wiring of the device must comply with the instruc-
tions in this user information, otherwise there is a risk
that the safety function will be lost.
Fig. 1 Block diagram ESM-TE3..
Fig. 2 Installation / removal
Fig. 3 Connections
A1: Power supply
A2 : Power supply
S11: DC 24V control voltage
S10: Control line
S15: Control line
S16: Control line
S25: Fault monitoring
S26: Fault monitoring
17-18: Time-delayed safety contact 1
27-28: Time-delayed safety contact 2
37-38: Time-delayed safety contact 3
basic device via terminals S25 and S26.
Independent operation without basic device is not pos-
sible.