EUCHNER CES-AP-CR2-CH User guide

More than safety.
System Manual
Non-Contact Safety Switch
CES-AP-CR2-CH (Multicode)
CES-AP-CL2-CH (Multicode)

System Manual Safety Switch CES-AP-C.2-CH
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Contents
About this manual 3
Correct use 3
Possible combinations for CES components 4
Exclusion of liability and warranty 4
General safety instructions 5
Function 6
Mounting 8
Electrical connection 9
Safety in case of faults 10
Fuse protection for power supply 10
Requirements for connection cables 10
Connector assignment and wire color for safety switch CES-AP-C.2-CH 11
Connection 12
Setup 14
LED indicators 14
Initial setup 14
Functional check 14
System status table 15
Technical data 16
Technical data for safety switch CES-AP-CR2-CH/CES-AP-CL2-CH 16
Technical data for actuator CES-A-BLN-... 18
Technical data for actuator CES-A-BDN 20
Ordering information and accessories 21
Inspection and service 22
Service 22
Declaration of conformity 23

System Manual Safety Switch CES-AP-C.2-CH
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About this manual
This manual is valid for all safety switches CES-AP-C.2-CH with version number
V 1.1.2 or higher.
Correct use
The Coded Electronic Safety switches series CES are safety devices for monitor-
ing movable safety guards.
In combination with a separating safety guard, this safety component prevents
dangerous machine movements 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.
Before safety switches are used, a risk assessment must be performed on the
machine, e.g., in accordance with:
EN ISO 13849-1, Safety of machinery. Safety related parts of control systems.
General principles for design
EN ISO 14121-1, Safety of machinery. Risk assessment. Principles
IEC 62061, Safety of machinery. Functional safety of safety-related electrical,
electronic and programmable electronic control systems.
Correct use includes compliance with the relevant requirements for installation
and operation, for example
EN ISO 13849-1, Safety of machinery. Safety related parts of control systems.
General principles for design
EN 1088, Safety of machinery. Interlocking devices associated with guards.
Principles for design and selection
EN 60204-1, Safety of machinery. Electrical equipment of machines. General
requirements
EN 60947-5-3, Specification for low-voltage switchgear and controlgear. Con-
trol circuit devices and switching elements. Requirements for proximity devices
with defined behaviour under fault conditions
The safety switch must be used only in conjunction with the designated CES ac-
tuators from EUCHNER. On the use of different actuators, EUCHNER provides no
warranty for safe function.
Important!
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 ac-
cordance with EN ISO 13849-2.
In the estimation of the PL for the overall system, a maximum value of
100 years can be assumed for the MTTFdaccording to the limit value in
EN ISO 13849-1:2008, Section 4.5.2. This corresponds to a minimum value
for the PFHdof 2.47x10-8/h.
Correct use requires observing the permissible operating parameters (see
Technical data).
If a product data sheet is included with the product, the information on the
data sheet applies in case of discrepancies with the operating instructions.
Only components may be used that are permissible in accordance with the
table below.
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System Manual Safety Switch CES-AP-C.2-CH
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Possible combinations for CES components
Safety switch
Actuator
Door hinge right
CES-A-BLN-R2-100776
100776
Door hinge left
CES-A-BLN-L2-104510
104510
Usage independent of
position of door hinge
CES-A-BLN-U2-103450
103450
Usage independent of
position of door hinge
CES-A-BDN-104730
104730
Door hinge right
CES-AP-CR2-CH
Door hinge left
CES-AP-CL2-CH
Key to symbols Combination possible
Exclusion of liability and warranty
In case of failure to comply with the conditions for correct use stated above, or
if the safety instructions are not followed, or if any servicing is not performed as
required, liability will be excluded and the warranty void.

System Manual Safety Switch CES-AP-C.2-CH
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General safety instructions
Safety switches fulfill personal protection functions. Incorrect installation or tamper-
ing can lead to fatal injuries to personnel.
Check the safe function of the safety guard particularly
after any setup work
after the replacement of a CES component
after an extended period without use
after every fault
Independent of these checks, the safe function of the safety 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 switches must not be bypassed (bridging of contacts), turned away,
removed or otherwise rendered ineffective.
On this topic pay attention in particular to the measures for reducing the pos-
sibility 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
who are familiar with the correct handling of safety components
who are familiar with the applicable EMC regulations
who are familiar with the applicable regulations on health and safety and ac-
cident prevention
who have read and understood the operating instructions and the system
manual
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Important!
Prior to use, read the operating instructions and the system manual and keep
these in a safe place. Ensure the operating instructions and the system manual
are always available during mounting, setup and servicing. EUCHNER cannot
provide any warranty in relation to the readability of the CD for the storage pe-
riod required. For this reason you should archive a printed copy of the system
manual. If you should lose the operating instructions or the system manual, you
can download these documents from www. EUCHNER.de.
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System Manual Safety Switch CES-AP-C.2-CH
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Function
The safety switch CES-AP-CR2-CH/CES-AP-CL2-CH complies with the following
safety requirements:
Safety category 4, PLe according to EN ISO 13849-1
Proximity device with self-monitoring type PDF-M according to EN 60947-5-3
Redundant design of the circuit in the unit with self-monitoring.
This means that the safety system still functions even if an internal component
fails
The switch state of the semiconductor outputs is continuously monitored inter-
nally
Short circuit detection at the safety outputs by pulse signals
The following switch-on condition applies to safety outputs OA and OB (see also
System status table and the section Typical system times):
Safety guard closed
The non-contact safety switch CES consists of three components: coded actuator
(transponder), evaluation unit and read head.
The evaluation unit is integrated together with the read head in a housing compat-
ible with EN IEC 60947-5-2.
Every EUCHNER actuator supplied has an electronic coding (unique coding) that is
read by the read head. Only if a correct coding is detected does the system accept
the actuator. The code in an actuator cannot be reprogrammed.
Unlike systems with unique code detection, on the CES-AP-C.2-CH a specific code
is not polled but instead it is only checked whether the actuator is of a type that
can be detected by the system (multicode detection). There is no exact compari-
son of the actuator code with the code defined in the safety switch (unique code
detection).
The safety switch is fastened to the fixed part of the safety guard.
The actuator attached to the movable part of the safety guard is moved towards
the read head fitted in the safety switch by closing the door. When the switch-on
distance is reached, power is supplied to the actuator by the read head by induc-
tion and data can be transferred.
If a permissible code is detected, the safety outputs are released.
Due to the combination of dynamic polling of the actuator and the redundant,
diverse design of the safety electronics with the two feedback safety outputs, the
safety switch will enter the safe state with every detectable fault.
When the safety guard is opened, the safety outputs switch off the safety circuit
and the monitoring output OUT is switched to high-resistance. The state of the
safety outputs is monitored internally by two microprocessors.
If faults are detected, the safety circuit is switched off and the DIA LED illuminates.
In case of devices with a DIA monitoring output, the output is set to HIGH.
The safety switch has a redundant circuit design with self-monitoring. This means
that the safety system is still effective even if a component fails.
The system is designed so that failures will not result in the loss of the safety func-
tion. The occurrence of failures is detected by cyclic self-monitoring at the latest
on the next demand to close the safety contacts (e.g. on starting).
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System Manual Safety Switch CES-AP-C.2-CH
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If the safety door with the actuator should settle over time, the actuator can drift
out off the read head operating distance. The device recognizes this and indicates
that the actuator is in the boundary area (function available for V 1.1.2 and higher).
This allows the safety door to be readjusted in time.

System Manual Safety Switch CES-AP-C.2-CH
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Mounting
Caution!
Risk of damage to equipment as a result of incorrect installation. Safety switches
must not be used as a mechanical end stop.
Fit an additional end stop for the movable part of the safety guard.
Important!
From the assured switch-off distance Sar, the safety outputs are safely shut
down.
When mounting several safety switches, observe the stipulated minimum
distance to avoid mutual interference.
min. 400 mm
The operating distance changes during the mounting of the actuator as a
function of the material used for the safety guard.
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Note the following points:
Actuator and safety switch must be easily accessible for inspection and re-
placement.
The switching operation must only be triggered by the specific actuator desig-
nated for this purpose. For permissible combinations please see the table of
possible combinations on page 4.
Actuator and safety switch must be fitted so that
the front faces are at the minimum switch-on distance 0.8 x Sao or closer
when the safety guard is closed (see section Operating distances). A mini-
mum distance dependent on the actuator must be maintained for a side ap-
proach direction: - For CES-A-BLN-R2 6 mm
- For CES-A-BLN-L2 6 mm
- For CES-A-BLN-U2 6 mm
- For CES-A-BDN 10 mm
when the safety guard is open up to the distance Sar (assured switch-off dis-
tance), a hazard is excluded.
the actuator is positively mounted on the safety guard, e.g. by using the
safety screws included.
Pay attention to the maximum tightening torque for the safety switch and
actuator mountings of 1 Nm.
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Installation options
Installation options

System Manual Safety Switch CES-AP-C.2-CH
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Electrical connection
Warning!
In case of an error, loss of the safety function through incorrect connection.
To ensure safety, both safety outputs (OA and OB) must always be evaluated.
The monitoring output OUT must not be used as a safety output.
Lay the connection cables with protection to prevent the risk of short cir-
cuits.
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Caution!
Risk of damage to equipment or malfunctions as a result of incorrect connec-
tion.
Do not use a control system with pulsing or switch off the pulsing function in
your control system. The device generates its own clock signal on the output
lines OA/OB. A downstream control system must tolerate these test pulses,
which may have a length of up to 0.4 ms.
No pulses are present when the safety outputs are switched off.
The inputs on an evaluation unit connected must be positive-switching, as the
two outputs on the safety switch deliver a level of +24 V in the switched-on
state.
All the electrical connections must either be isolated from the mains supply
by a safety transformer according IEC 61558-2-6 with limited output voltage
in the event of a fault, or by other equivalent isolation measures.
For use and operation as per the requirements, a power supply with the
feature "for use in class 2 circuits" must be used. The same requirement ap-
plies to the safety outputs.
Alternative solutions must comply with the following requirements:
a) Electrically isolated power supply unit with a max. open-circuit voltage of 30
V/DC and a limited current of max. 8 A.
b) Electrically isolated power supply unit in combination with fuse as per UL248.
This fuse should be designed for max. 3.3 A and should be integrated into
the 30 V/DC voltage section.
All electrical outputs must have an adequate protective circuit for inductive
loads. The outputs must be protected with a free-wheeling diode for this pur-
pose.
Power devices which are a powerful source of interference must be installed
in a separate location away from the input and output circuits for signal pro-
cessing. The cable routing for safety circuits should be as far away as pos-
sible from the cables of the power circuits.
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Important!
If the device does not appear to function when operating voltage is applied (e.g.
green STATE LED does not flash), the safety switch must be returned unopened
to the manufacturer.

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Safety in case of faults
The operating voltage UBis reverse polarity protected.
The contacts OA/OB are short circuit proof.
A short circuit between OA and OB is detected by the switch.
A short circuit in the cable can be excluded by laying the cable with protection.
Fuse protection for power supply
The power supply must be provided with fuse protection depending on the current
required for the outputs. The following rules apply:
Max. current consumption of a switch Imax
Imax = IUB + IOUT + IOA+OB
IUB = Switch operating current (30 mA)
IOUT = Monitoring output load current (max. 50 mA)
IOA+OB = Load current safety outputs OA + OB (2 x max. 150 mA)
Requirements for connection cables
Caution!
Risk of damage to equipment or malfunctions as a result of incorrect connec-
tion cables.
Use connection components and connection cables from EUCHNER
On the usage of other connection components, the requirements in the fol-
lowing table apply. EUCHNER provides no warranty for safe function in case
of failure to comply with these requirements.
The connection cable must not be longer than 180 m in total.
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Observe the following requirements with respect to the connection cables:
Parameter Value Unit
Wire cross-section min. 0.14 mm²
R max. 150 W/km
C max. 120 nF/km
L max. 0.65 mH/km
Recommended cable type LIYY 8x or 5x0.14 mm²
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