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Operating Instructions
Read Heads/Actuators CMS for Safety Relays ESM
Scope
These operating instructions are valid for all read
heads/actuators CMS for safety relays ESM. These
operating instructions, the operating instructions for
safety relays ESM-BA2.. and ESM-BA3.., the docu-
ment Safety information and any available data sheet
form the complete user information for your device.
Important!
Make sure to use the operating instructions
valid for your product version. Please contact the
EUCHNER Service team if you have any questions.
Supplementary documents
The overall documentation for this device consists
of the following documents:
Document title
Contents
(document number)
Safety information Basic safety information
(2525460)
Operating instructions (this document)
(2096881)
Operating instructions Safety relay ESM-BA2..
(2090071)
Operating instructions Safety relay ESM-BA3..
(2090073)
Declaration of
Declaration of conformity
conformity
Any additions to the Take any associated additions to
operating instructions the operating instructions or data
sheets into account.
Important!
Always read all documents to gain a complete
overview of safe installation, setup and use of
the device. The documents can be downloaded
from www.euchner.com. For this purpose, enter
the doc. no. or the order number for the device
in the search box.
Correct use
In combination with safety relays ESM-BA2.. and
ESM-BA3.., the Coded Magnetic read heads and
actuators of series CMS are safety devices for
monitoring movable guards.
To use the read heads CMS-R-AZA..., CMS-R-AZC...,
CMS-R-BZB... and CMS-R-BZD... in category 4 with
Performance Level e according to EN ISO 13849-1,
evaluation must be performed using the related
EUCHNER safety relays ESM.
The system consists of evaluation unit, read head
and actuator. It forms a non-contact, magnetically
coded interlocking device with low coding level
(type 4).
In combination with a guard, this system prevents
dangerous machine functions from being performed
for as long as the guard is opened. A stop command
is triggered if the guard is opened during the dan-
gerous machine function.
Before safety components are used, a risk assess-
ment must be performed on the machine, e.g. in
accordance with:
EN ISO 13849-1
f
EN ISO 12100
f
EN 62061
f
Correct use includes observing the relevant require-
ments for installation and operation, e.g.:
EN ISO 14119
f
EN 60204-1
f
Important!
The read heads and actuators must be used only
f
with the designated evaluation units from EUCH-
NER. On the use of different evaluation units,
EUCHNER provides no warranty for safe function.
The user is responsible for safe integration of
f
the device into a safe overall system. For this
purpose, the overall system must be validated,
e.g. in accordance with EN ISO 13849-1.
Correct use requires observing the permissible
f
operating parameters (see technical data).
If a data sheet is included with the product, the
f
information on the data sheet applies in case of
discrepancies with the operating instructions.
Only components that are permissible in accor-
f
dance with the following combination options
table may be used. Refer to the operating
instructions of the corresponding component
for further information.
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Exclusion of liability and warranty
www In case of failure to comply with the conditions for
correct use stated above, or if the safety regula-
www
tions are not followed, or if any servicing is not
performed as required, liability will be excluded and
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the warranty void.
General safety precautions
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Safety components fulfill personnel protection
functions. Incorrect installation or tampering can
lead to severe injuries to personnel.
Check the safe function of the safeguard par-
ticularly
after any setup work
f
each time after replacement of a CMS com-
f
ponent
after an extended period without use
f
after every fault
f
Independent of these checks, the safe function
of the safeguard should be checked at suitable
intervals as part of the maintenance schedule.
Warning! Danger of fatal injury in the event of
incorrect connection or incorrect use.
Safety components must not be bypassed (bridg-
ing of contacts), turned away, removed or other-
wise rendered ineffective. Pay particular attention
to EN ISO 14119: 2013, section 7, regarding the
possibilities for bypassing an interlocking device.
The device may be installed and put into operation
only by authorized personnel
who are familiar with the correct handling of
f
safety components
who are familiar with the applicable EMC reg-
f
ulations
who are familiar with the applicable regulations
f
on operational safety and accident prevention
who have read and understood the operating
f
instructions.
4
Function
The CMS consists of a read head and actuator
and is functional only in specific combinations
(see combination options).
The read head connected to the evaluation unit con-
tains reed contacts that are activated by the coded
magnetic actuator. The evaluation unit converts
this information and transfers the guard state to
the control system.
Mounting
Caution! Risk of damage to equipment as a result
of incorrect installation.
Read heads or actuators must not be used as a
mechanical end stop. Fit an additional end stop
for the movable part of the guard.
Caution! Read heads or actuators must not be
used in an environment with strong magnetic fields.
Important! Read heads and actuators must be
positively mounted to the guard, e.g. by using the
safety screws supplied. Tighten the screws with a
torque of max. 0.5 Nm.
Important! The M8 plug connector must be
tightened with a suitable tool.
The read head and actuator may be installed in any
position. The alignment of the read head and the
actuator must be kept in mind (see Fig. 1).
Install read head and actuator so that:
they are accessible for inspection work and the
f
installation of spare parts
when the guard is closed, the active read head
f
and actuator faces are exactly aligned (see Fig. 1)
the actuator is located in the read head's actuating
f
range when the guard is closed.
A guide and an additional end stop must be fitted
f
for the movable part of the guard.
A latching mechanism in the closed position must
f
be provided for the safety door.
If the read head and actuator are installed flush,
f
the operating distances are reduced in line with the
installation depth and the guard material.
If the read head and actuator are mounted on fer-
f
romagnetic material, the read distance is reduced.
If the approach speed between the read head and
f
the actuator is low, the approach direction Z (see
Fig. 1) should be avoided.
Electrical connection
Warning! In the event of a fault, loss of the safety
function due to incorrect connection.
Both switching contacts on the read head must be
evaluated separately.
The evaluation unit must perform the short circuit
monitoring on the read head connected.
Lay the connecting cables with protection to
prevent the risk of short circuits.
Caution! Risk of damage to equipment or malfunc-
tions as a result of incorrect connection.
On read heads with LEDs the current on the con-
tact status indication is not allowed to be greater
than 20 mA.
The read heads must be connected to the evalu-
ation units in accordance with the wiring diagram
(see operating instructions for evaluation units).