ESM/ ESM-F ESM/ ESM-F More than safety.
More than safety.
Safety Relays
ESM/ ESM-F
ESM/ ESM-F 2
Quality, reliability, precision
Quality, reliability and precision are the
hallmarks of our corporate philosophy.
They represent concepts and values
to which we feel totally committed.
At EUCHNER, quality means that all
our employees take personal respon-
sibility for the company as a whole
and, in particular, for their own field of
work. This individual commitment to
perfection results in products which
are ideally tailored to the customers
needs and the requirements of the
market. After all: our customers and
their needs are the focus of all our
efforts. Through efficient and effective
use of resources, the promotion of
personal initiative and courage in find-
ing unusual solutions to the benefit of
our customers, we ensure a high level
of customer satisfaction. We familiar-
ize ourselves with their needs, require-
ments and products and we learn
from the experiences of our cus-
tomers own customers.
EUCHNER More than safety.
Quality made by EUCHNER
More than safety.
Around the world the Swabian
specialists in motion sequence
control for mechanical and sys-
tems engineering.
EUCHNERs history began in 1940 with
the establishment of an engineering
office by Emil Euchner. Since that
time, EUCHNER has been involved in
the design and development of switch-
gear for controlling a wide variety of
motion sequences in mechanical and
systems engineering. In 1953, Emil
Euchner founded EUCHNER + Co., a
milestone in the companys history. In
1952, he developed the first multiple
limit switch to this day a symbol of
the enterprising spirit of this family-
owned company.
Automation Safety ManMachine
Today, our products range from
electromechanical and electronic
components to complex system solu-
tions. With this wide range of products
we can provide the necessary tech-
nologies to offer the right solution for
special requirements regardless of
whether these relate to reliable and
precise positioning or to components
and systems for safety engineering in
the automation sector.
EUCHNER products are sold through a
world-wide sales network of compe-
tent partners. With our closeness to
the customer and the guarantee of
reliable solutions throughout the
globe, we enjoy the confidence of cus-
tomers all over the world.
Emil Euchner, the
companys founder and
inventor of the multiple
limit switch, circa 1928.
Safety 3
Contents
Technical Status 03-08/06
General information
4
The ESM modular principle
4
The modular safety system ESM-F
4
Plug-in and use! - The advantages of the modular system
4
Quick troubleshooting
4
Automatic or manual start
4
Contacts for higher currents and feedback loop
5
Setting up safety groups
5
Adding time-delayed outputs
5
Approvals
6
Explanation of symbols
6
Safety relays ESM
7
Safety relays ESM-BL.. and ESM-BA..
8
Safety relay time-delayed ESM-BT..
10
Safety relay 2-hand ESM-2H..
11
Contact expansion ESM-ES..
12
Contact expansion time-delayed ESM-TE..
13
Modular safety system ESM-F
15
Base units ESM-F-B..
16
Input modules ESM-F-I..
17
Output modules ESM-F-O..
18
Time-delayed output modules ESM-F-OT..
19
Accessories
20
Technical data
21
Safety relays ESM
22
Modular safety system ESM-F
26
Appendix
Glossary
29
Connection examples ESM
29
Connection examples ESM-F
32
Item Index
Index by item designation
33
Index by order numbers
33
Product overview
37
Safety Relays ESM/ESM-F 4
Safety Relays ESM/ESM-F
Subject to technical modifications; no responsibility is accepted for the accuracy of this information.
General information
For machines and systems that can produce a risk for people when in
operation, the EU Machinery directive defines minimum requirements
that are intended to reduce to a minimum the specific hazards and the
related risks of accident.
If all sources of danger cannot be eliminated by design measures,
appropriate protective measures must be taken. Using safety guards,
such as fences or similar, it is intended to prevent people entering the
danger area. If users need to have access to the danger area during
operation, movable safety guards such as protective doors, flaps, etc,
are used. This is the case, for example, for loading or unloading,
troubleshooting, machine setup or cleaning work.
To safeguard this access area, safety switches with various principles
of operation are used. These switches are designed to monitor the
position of the safety guard and, when the safety guard is opened, to
generate a signal which will safely interrupt the supply of power to the
potentially hazardous parts of the system or which will ensure that the
safety circuits are safely interrupted. The EUCHNER safety relays series
ESM or ESM-F ensure that the safety circuits are interrupted. On the one
hand they safely evaluate components connected such as
mechanical safety switches with and without guard locking,
non-contact safety switches,
emergency stop switchgear,
electro-sensitive protective equipment, etc.
while on the other hand they safely shut down potentially hazardous
machine functions.
The safety relays impress with their compact DIN rail housing and their
suitability for applications up to safety category 4 in accordance with
EN 954-1.
The ESM modular principle
All units in the ESM safety relay series are fitted in a housing that is only
22.5 mm wide. Various safety relays are available to which contact
expansions can be added on the output side. The contact expansions
can be non-time-delay or time-delayed. The advantage of this modular
principle is that only a few devices are required to be able to realize a
large number of different safety evaluations.
The relays can be operated with various types of starting. The devices
can be started manually or automatically using suitable wiring. The manual
start can also monitor the start button.
Using suitable wiring it is also possible to integrate a feedback circuit
such that safety-related parts of a machine or system downstream can
also be monitored.
In the ESM series the majority of the devices are available with a variety
of input voltage ranges.
To be able to work with the system, it is first necessary to connect a
base unit. The input modules are positioned to the left of the base unit
and the output modules to the right. In this way it is easy to expand the
system.
By simply connecting together the units, it is possible to implement any
combination of non-time-delay and time-delay safety contacts. The number
of expansion units is almost unlimited.
The uniform and space-saving design of all the devices in the entire
series also makes possible installation in compact control cabinets.
Quick troubleshooting
Every ESM-F unit is equipped with LEDs that indicate the device status
and the state of the inputs and outputs.
The safety devices are connected using plug-in connection terminals
that can be rapidly disconnected from the device. A faulty unit can be
replaced quickly. The faulty unit is simply removed and replaced with a
new unit - thats it! Function is restored immediately.
Automatic or manual start
The base unit can be started either manually using a start button or
automatically.
The modular safety system ESM-F
Plug-in and use! - The advantages of the modular
system
Connecting several units in series using the ESM-F system does not
involve any wiring effort. The units are connected together using a special
connector system and are ready for use immediately. Programming is
not necessary.
Base
SA
SI
SO
Monitored, manual start 5
Safety Relays ESM/ESM-F
Subject to technical modifications; no responsibility is accepted for the accuracy of this information.
Forming a group with the outputs GO1 and GO2 on an input module
The input modules In1 and In2 shut down the output modules in both
groups, input module In3 only acts on group 1. The units In4 and In5
only on group 2. The connection cable is connected between the GO
terminals on the last input module on the right (here: In2) that is to act
on all groups, and the GI terminals on the base unit in group 2 (basic 2).
Using the ESM-F system it is also possible to form more than two groups.
A wide range of combinations of input modules can be allocated to each
group.
Forming a group with the outputs GO1 and GO2 on a base unit
It is also possible, e.g., to connect daisy-chained emergency stops to a
base unit and for only this chain to act on other base units. The following
example shows such an application. Only the inputs