EUCHNER CKS-A-L1B-SC - Handbuch (Seite 3)

Operating Instructions Key Adapter CKS-A-L1B-SC
Correct use
Key adapters series CKS are operated in combina-
tion with an evaluation unit in the system family
CES-AZ-.ES-... or CES-FD-...
In combination with a safety guard, this safety
component prevents dangerous machine move-
ments from being performed for as long as the
key is removed.
A stop command is triggered if the key is removed
during the dangerous machine function.
For the control system, this means that
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starting commands that cause hazardous situa-
tions must become active only when the key is
inserted.
Before safety components are used, a risk as-
sessment must be performed on the machine in
accordance with
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EN ISO 13849-1, Safety of machinery. Safety re-
lated parts of control systems. General principles
for design, Annex B
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EN ISO 14121, Safety of machinery. Risk assess-
ment. Principles.
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IEC 62061, Safety of machinery. Functional safety
of safety-related electrical, electronic and program-
mable electronic control systems.
Correct use includes compliance with the relevant
requirements for installation and operation, in
particular
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EN ISO 13849-1, Safety of machinery. Safety re-
lated parts of control systems. General principles
for design
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EN 1088, Safety of machinery. Interlocking
devices associated with guards. Principles for
design and selection
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EN 60204-1, Safety of machinery. Electrical equip-
ment of machines. General requirements.
The key adapter must be used only in conjunction
with the designated CKS keys from EUCHNER.
On the use of different keys or other connection
components, EUCHNER provides no warranty for
safe function.
Important:
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The user is responsible for the integration of
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.
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Key adapter CKS must not be used as a lock-
out mechanism in combination with multicode
evaluation
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Correct use requires observing the permissible
operating parameters (see Technical data).
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If a product data sheet is included with the
product, the information on the data sheet ap-
plies in case of discrepancies with the operating
instructions.
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.
Safety precautions
Safety components fulfill personal protection func-
tions. Incorrect installation or tampering can lead to
fatal injuries to personnel.
Check the safe function of the safety guard par-
ticularly
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after any setup work
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after the replacement of a system component
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after an extended period without use
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after every fault
Independent of these checks, the safe function of
the system should be checked at suitable intervals
as part of the maintenance schedule.
Danger of fatal injury in the event of incorrect
connection or incorrect use.
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Safety components must not be bypassed
(bridging of contacts), turned away, removed
or otherwise rendered ineffective. On this
topic pay attention in particular to the mea-
sures for reducing the possibility of bypassing
from EN 1088:1995+A2:2008, Section 5.7.
The device is only allowed to be installed and
placed in operation by authorized personnel
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who are familiar with the correct handling of
safety components
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who are familiar with the applicable EMC
regulations
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who are familiar with the applicable regula-
tions on health and safety and accident
prevention
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who have read and understood the operating
instructions and the system manual.
The switching operation may be triggered only
by keys specially designated for this purpose
(see Ordering table).
Use in combination with multicode evaluation
units only in special cases after strict assess-
ment of the accident risk.
The possible use of several keys increases the
risk of tampering.
The key must be completely pulled out of the
key adapter in order to switch the safety circuit
off safely.
Function
The key adapter CKS is a CES read head (see manual
of the evaluation unit used) and is used as a lockout
mechanism. As soon as the key is in the key adapter,
this is reported to the evaluation unit.
Each delivered key possesses a unique electronic
coding and so is a unique element in the system
used. The code of a key cannot be reprogrammed.
Remove the key from the key adapter before enter-
ing the danger area. The safety outputs switch the
safety circuit off when the key is removed from the
operating distance. The machine cannot be started.
Insert the key into the key adapter again after leaving
the danger area.
Mounting
The key adapter must not be opened.
To achieve the degree of protection IP 67,
it is necessary to install the key adapter in a
clean, flat metal plate at least 2 mm thick and
to tighten the screws with a tightening torque
of 0.25 ... 0.35 Nm.
The device may be damaged if the tightening
torque applied exceeds 0.35 Nm.
A suitable strain relief must be provided for the
connection cables in order to avoid damage to
the connection sockets or malfunctions.
The key adapter is intended for mounting in control
panels with a cut-out measuring 33 mm x 68 mm
according to DIN 43700. The device is fastened
using screw clamp elements from the rear side of
the panel.
1. Insert the key adapter, with seal already bonded
in place, into the mounting cut-out from the front.
2. Push screw clamp elements into the housing
of the key adapter from the side as far as
they will go and tighten with 0.25 ... 0.35 Nm.
3. After mounting the key adapter, again check
it for firm seating and correct sealing of the
front panel.
Protection against environmental effects
Remove dirt from the key and the key adapter
using a soft cloth and solvent-free, non-abrasive
cleaning agents.
Cover the key adapter and the key during painting
work.
Electrical connection
The key adapter CKS must be used only with a
suitable EUCHNER connection cable. The connec-
tion cable contains two screened cores to transmit
the signals from the key adapter to the evaluation
unit.
All the electrical connections must either be iso-
lated from the mains supply by a safety transformer
according to IEC EN 61558-2-6 with limited output
voltage in the event of a fault, or by other equivalent
isolation measures.
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For terminal assignment see Figure 1.
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For detailed information see the system manual
for the evaluation unit used.
Setup and functional check
Pay attention to the information in the system manual
for the evaluation unit used during setup.
Danger of fatal injuries as a result of faults in
installation and functional check.
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Before carrying out the functional check,
make sure that there are no persons in the
danger area.
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Observe the valid accident prevention regula-
tions.
After installation and any fault, the safety function
must be fully checked. Proceed as follows:
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Switch on operating voltage.
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The machine must not start automatically.
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Pull the key out of the key adapter; close all safety
guards.
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It must not be possible to start the machine
as long as the CKS key is removed.