Electrical Connection - EUCHNER CMS-A Serie Instrucciones De Operación

Operating Instructions
Read Heads/Actuators CMS for Safety Relay ESM
Correct use
In combination with the safety relays ESM‑BA2..
and ESM‑BA3.., the Coded Magnetic read heads
and actuators 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 occurring while
the guard is open. A stop command is triggered if
the guard is opened during the dangerous 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
f
only with the designated evaluation units from
EUCHNER. 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 13849‑2.
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.
Only components may be used that are permissi‑
f
ble in accordance with the following combination
options table. Refer to the operating instructions
of the corresponding component for further
information.
Exclusion of liability and warranty
In case of failure to comply with the conditions for
correct use stated above, or if the safety instruc‑
tions are not followed, or if any servicing is not
performed as required, liability will be excluded and
the warranty void.
General safety precautions
Safety components fulfill personnel protection
functions. Incorrect installation or tampering can
lead to severe injuries to personnel.
Check the safe function of the guard particularly
after any setup work
f
each time after replacement of a CMS component
f
after an extended period without use
f
after every fault
f
Independent of these checks, the safe function of
the guard 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.
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.
Installation
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 Figure 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 and
f
actuator faces are exactly aligned (see Figure 1)
the actuator is located in the read head's operating
f
distance when the guard is closed.
4
A guide and an additional end stop must be fitted
f
for the movable part of the guard.
In the closed position, a latching mechanism must
f
be fitted to the safety door.
If the read head and actuator are fitted flush,
f
the switching distance is reduced in line with the
installation depth and the guard material.
If the read head and actuator are fitted on ferro‑
f
magnetic 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
Figure 1) should be avoided.

Electrical connection

Warning! If there is a mistake, loss of the safety
function due to incorrect connection.
Both switching contacts on the read head must be
evaluated separately.
The evaluation unit must undertake the short circuit
monitoring on the read head connected.
Lay the connection 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 contact
status indication is not allowed to be greater than
20 mA.
The read heads must be connected to the evaluation
units in accordance with the wiring diagram (see
operating instructions for evaluation units).