Correct Use; General Safety Precautions - EUCHNER CMS-E-ER Manual Del Usuario

Operating Instructions
Evaluation Unit 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 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 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.
This means:
Starting commands that cause a dangerous ma-
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chine function must become active only when the
guard is closed.
Opening the guard triggers a stop command.
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Closing the guard must not cause automatic start-
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ing 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
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EN ISO 12100
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EN 62061
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Correct use includes observing the relevant require-
ments for installation and operation, e.g. according
to the following standards:
EN ISO 13849-1
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EN ISO 14119
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EN 60204-1
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Important!
The evaluation unit must be used only in con-
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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 func-
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tion, initiated by a guard according to Table 8
– EN ISO 13849-1: 2015.
The safety-related function of the safety system
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is the opening of the output contacts when the
actuator is absent.
The user is responsible for safe integration of
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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
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operating parameters (see technical data).
If a product data sheet is included with the prod-
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uct, the information on the data sheet applies
in case of discrepancies with the operating
instructions.
Only components that are permissible in accor-
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dance with the following combination options table
may be used. 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 regula-
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 safeguard par-
ticularly
after any setup work
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each time after replacement of a CMS com-
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ponent
after an extended period without use
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after every fault
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Independent of these checks, the safe function
of the safeguard 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 device may be installed and put into operation
only by authorized personnel
who are familiar with the correct handling of
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safety components
who are familiar with the applicable EMC reg-
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ulations
who are familiar with the applicable regulations
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on operational safety and accident prevention
who have read and understood the operating
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instructions.
Function
The safety system CMS consists of evaluation
unit, read head and actuator and is functional
only in particular combinations (see combina-
tion options).
Depending on the type of the connected read heads,
the evaluation unit CMS-E-ER is used for monitoring
one to 30 safety doors or up to 10 safety doors.
The read heads CMS-R-... have electrically isolated
reed contacts with NC contacts and NO contacts.
The read heads CMS-RH-... are based on Hall
sensors with electrically isolated outputs with NC
contacts and NO contacts.
If the actuator is in the actuating range, 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 displays).
Due to the NC/NO contact combination in the read
head, the evaluation unit expects to receive antiva-
lent signal changes. The evaluation unit converts
this information and transfers the guard state to the
control system via a safety contact.
If the actuators for all the read heads connected are
in the actuating range, safety contacts 13/14 and
23/24 are closed. The additional auxiliary contact
31/32 is opened.
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
controlgear output can be detected.
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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
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and connected feedback loop
Manual start using start button with rising edge
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and connected feedback loop
Automatic start with connected feedback loop
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Automatic start without feedback loop
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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 actuating range,
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 actuating range,
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 ter-
minals Y1 and Y3. Here too, safety contacts 13/14
and 23/24 are activated only when all connected
read heads are in the actuating range 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 errors
in the evaluation unit will be detected 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 the
evaluation unit CMS-E-ER.