Correct Use; General Safety Instructions - EUCHNER CMS Serie Manual De Instrucciones

Operating Instructions
Evaluation Units CMS-E-ER
These operating instructions are valid only in
conjunction with the operating instructions for
the relevant read heads CMS-R-... and actua-
tors CMS-M-...

Correct use

Evaluation units series CMS are technical safety
devices for monitoring movable safety guards.
Special read heads are connected for this purpose.
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 safety guard, this system
prevents dangerous machine functions from being
performed for as long as the safety guard is opened.
A stop command is triggered if the safety guard is
opened during the dangerous machine function.
This means:
Starting commands that cause a dangerous ma-
f
chine function must become active only when the
safety guard is closed.
Opening the safety guard triggers a stop com-
f
mand.
Closing the safety guard must not cause auto-
f
matic starting of a dangerous machine function.
A separate start command must be issued. For
exceptions, refer to EN ISO 12100 or relevant
C-standards.
Before safety components are used, a risk assess-
ment must be performed on the machine, e.g. in
accordance with the following standards:
EN ISO 13849-1, Safety of machinery – Safety-re-
f
lated parts of control systems – Part 1: General
principles for design
EN ISO 12100, Safety of machinery – General
f
principles for design – Risk assessment and risk
reduction
EN 62061, Safety of machinery – Functional
f
safety of safety-related electrical, electronic and
programmable electronic control systems.
Correct use includes observing the relevant require-
ments for installation and operation, e.g. according
to the following standards:
EN ISO 13849-1, Safety of machinery – Safety-re-
f
lated parts of control systems – Part 1: General
principles for design
EN ISO 14119 (supersedes EN 1088), Safety of
f
machinery – Interlocking devices associated with
guards – Principles for design and selection
EN 60204-1, Safety of machinery. Electrical equip-
f
ment of machines. General requirements
Important!
The evaluation unit must be used only in con-
f
junction with the designated read heads and
actuators from EUCHNER. On the use of different
read heads or actuators, EUCHNER provides no
warranty for safe function.
The devices permit a safety-related stop function,
f
initiated by a safety guard according to Table 8
– EN ISO 13849-1: 2015.
The safety-related function of the safety system
f
is the opening of the output contacts (13/14,
23/24) when the actuator is absent.
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 product data sheet is included with the product,
f
the information on the data sheet applies in case
of discrepancies with the operating instructions.
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 instructions

Safety components fulfill personal protection
functions. Incorrect installation or tampering can
lead to severe injuries to personnel.
Check the safe function of the safety 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 safety guard should be checked at suitable
intervals as part of the maintenance schedule.
For information about possible time intervals, refer
to EN ISO 14119: 2013, section 8.2.
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 auxiliary contact 31/32 for the evaluation unit
CMS-E-ER must not be used as a safety contact.
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 safety system CMS consists of an eval-
uation unit, read head and actuator and is
functional only in particular combinations (see
combination options)!
The evaluation unit CMS-E-ER is used for monitoring
from one to six safety doors.
The read heads CMS-R-... have electrically separate
reed contacts with NC contacts and NO contacts.
The read heads CMS-RH-... are based on Hall
sensors with electrically separate outputs with NC
contacts and NO contacts.
If the actuator is in the operating distance, the
contacts in the read head are switched by the
magnetic field. The switching status of the contacts
is displayed on the evaluation unit's LEDs (see
section LED indicators). Due to the NC/NO contact
combination in the read head, the evaluation unit
expects to receive antivalent signal changes. If the
actuators for all the read heads connected are in
the operating distance, safety contacts 13/14 and
23/24 are closed. The additional auxiliary contact
31/32 is opened.
The evaluation unit converts this information and
transfers the safety guard state to the control
system via a safety contact.
5
When the safety door is opened or closed, the eval-
uation unit is checked to ensure that it is functional.
In this way internal errors from the read head to the
control unit output can be detected.
If an error is detected, the evaluation unit changes
to a blocked state. The safety contacts remain in
the open state.
The auxiliary contact is electrically isolated from the
safety contacts.
If contactors are used, the switching contacts can
be monitored for a possible malfunction by the
evaluation unit via a feedback loop. A start button
can also be connected to the evaluation unit. Four
connection variants are possible here:
Manual start using start button with falling edge
f
and connected feedback loop
Manual start using start button with rising edge
f
and connected feedback loop
Automatic start with connected feedback loop
f
Automatic start without feedback loop
f
Manual start using start button with falling
edge and connected feedback loop
In the case of a monitored feedback loop, safety
outputs 13/14 and 23/24 are activated only if all
connected read heads are in the operating distance,
feedback loop Y1/Y2 is closed and the start button
is released after actuation.
The safety contacts are closed only when the start
button is released. The start pulse is monitored by
the system.
Manual start using start button with rising
edge and connected feedback loop
In the case of a monitored feedback loop, safety
contacts 13/14 and 23/24 are activated only if all
connected read heads are in the operating distance,
feedback loop Y1/Y3 is closed and the start button
is pressed.
The safety contacts are closed when the start
button is pressed. The start pulse is monitored by
the system.
Automatic start with connected feedback
loop
If a start button is not to be included in the feedback
loop, the feedback loop must be connected to termi-
nals Y1 and Y3. Here too, safety contacts 13/14 and
23/24 are activated only when all connected read
heads are in the operating distance and feedback
loop Y1/Y3 is closed.
Automatic start without feedback loop
In case of automatic start without a feedback loop,
a 2-pin jumper must be connected to Y1 and Y3.
Fault detection by the unit
The CMS-E-ER is a self-monitoring system unit. Faults
and short circuits in the read head or internal faults in
the evaluation unit will be recognized and the safety
circuit will be reliably switched off. Internal linking of
the relay in the evaluation unit prevents the machine
from starting up in the event of a fault.
Connection of electromechanical safety
switchgear (safety switches, emergency
stop, ...)
Unlike evaluation unit CMS-E-BR, evaluation unit
CMS-E-ER does not enter the fault state if the
contacts do not switch simultaneously when the
door is closed. This also permits mechanical
safety switches with NC/NO contact combination
(e.g. emergency stop switch) to be connected to
evaluation unit CMS-E-ER.