Operating Instructions
AR Evaluation Unit
CES-AR-AES-12
More than safety.
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Contents
Correct use 3
Possible combinations on the AR evaluation unit 4
Exclusion of liability and warranty 4
General safety instructions 5
Function 6
Block diagram CES-AR-AES-12 6
Mounting 6
Electrical connection 7
Safety in case of faults 7
Connecting AR switch chain 9
Starting behavior 10
Connecting safety contacts and feedback loop 11
Connecting monitoring outputs on the AR evaluation unit 13
Connection example 14
Setup 15
Status LEDs, control elements and terminal assignment 16
LED indicators 16
Reset button 16
Troubleshooting 16
System status table 17
Technical data 18
Dimension drawing 19
System times for the AR system 19
Ordering information and accessories 20
Inspection and service 20
Service 21
Declaration of conformity 22
2
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Correct use
The AR evaluation unit is used for the central evaluation of safety-related signals
in AR switch chains.
In combination with a separating safety guard and the machine control, this safety
component prevents dangerous machine movements from occurring while the
safety guard is open. A stop command is triggered if the safety guard is opened
during the dangerous machine function or if guard locking is deactivated.
Before safety switches are used, a risk assessment must be performed on the
machine in accordance with:
Ì EN ISO 13849-1, Safety of machinery. Safety related parts of control systems.
General principles for design
Ì EN ISO 12100, Safety of machinery – General principles for design – Risk as-
sessment and risk reduction.
Ì 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, in particular
Important!
Ì EN ISO 13849-1, Safety of machinery. Safety related parts of control systems.
General principles for design
Ì EN 1088, Safety of machinery. Interlocking devices associated with guards.
Principles for design and selection
Ì EN 60204-1, Safety of machinery. Electrical equipment of machines. General
requirements
Ì EN 60947-5-3 Specification for low-voltage switchgear and controlgear. Con-
trol circuit devices and switching elements. Requirements for proximity devices
with defined behavior under fault conditions
Only safety switches that are suitable for operation in an AR switch chain can be
evaluated. Check the operating instructions for the related safety switch. Combination with devices that are not suitable for use in an AR switch chain or with devices
from other manufacturers is not permitted. A maximum of 12 safety switches in
an AR switch chain can be connected to the AR evaluation unit CES-AR-AES-12.
Unicode and Multicode version switches can be connected. Unicode and Multicode
versions can be combined in an AR switch chain.
Ì 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.
Ì Correct use requires observing the permissible operating parameters (see
Technical data).
Ì 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.
Ì In the estimation of the PL for the overall system, a maximum value of
100 years can be assumed for the MTTF
EN ISO 13849-1:2008, section 4.5.2. This corresponds to a minimum value
for the PFH
of 2.47x10-8/h.
d
according to the limit value in
d
Ì When up to 11 devices are connected in series, these limit values can be
assumed for the entire switch chain as a subsystem. As a subsystem, this
switch chain achieves PL e.
3
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Important!
Ì In the case of series connection of more than 11 switches in a chain,
the PFH
EN ISO 13849-1:2008, Section 4.5.1.
Ì If the simplified method according to Section 6.3 of EN ISO 13849:2008-12
is used for validation, the Performance Level (PL) might be reduced when
more than 11 devices are connected in series.
Ì It is only allowed to use components that are permissible in accordance with
the table below.
Possible combinations on the AR evaluation unit
Evaluation unit Safety switch
can be calculated according to one of the stated methods in
d
Actuator
AR evaluation unit
CES-AR-AES-12
098 225
Key to symbols
CES-AR-C01...
from V1.1.2
(see rating plate on
the device)
CES-AR-CR2...
from V1.1.2
(see rating plate on
the device)
CES-AR-CL2...
from V1.1.2
(see rating plate on
the device)
CET1/2-AR...
from V1.1.2
(see rating plate on
the device)
CET3/4-AR...
from V1.0.0
(see rating plate on
the device)
/
/
CES-A-BBA
071 840
Combination possible / combination on request
Combination possible, guard locking for process protection
Combination possible, guard locking for personal protection / combination on request
Combination not permissible
CES-A-BCA
088 786
CES-A-BPA
098 775
CES-A-BRN
100 251
CES-A-BLN-R2-100776
100 776
CES-A-BLN-L2-104510
104 510
CES-A-BLN-U2-103450
103 450
CES-A-BDN-06-104730
104 730
CET-A-BWK-50X
096 327
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.
4
Operating Instructions AR Evaluation Unit CES-AR-AES-12
General safety instructions
Safety switches fulfill personal protection functions. Incorrect installation or tampering can lead to severe injuries to personnel.
The number of teach-in and switching operations is saved in the internal memory in
the AR evaluation unit. If necessary, this memory can be read by the manufacturer.
Check the safe function of the safety guard particularly
Ì after any setup work
Ì after the replacement of a CES component
Ì after an extended period without use
Ì 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.
Ì 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 possibility of bypassing from EN 1088:1995+A2:2008, Section 5.7.
Important!
The device is only allowed to be installed and placed in operation by authorized
personnel
Ì who are familiar with the correct handling of safety components
Ì who are familiar with the applicable EMC regulations
Ì who are familiar with the applicable regulations on health and safety and ac-
cident prevention
Ì who have read and understood the operating instructions.
Prior to use, read the operating instructions of the CES component used and
keep them in a safe place. Ensure the operating instructions are always available
during mounting, setup and servicing. EUCHNER cannot provide any warranty
in relation to the readability of the CD/DVD for the storage period required. For
this reason you should archive a printed copy of the operating instructions. You
can download the operating instructions from www.EUCHNER.de.
5
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Function
The AR evaluation unit is used to evaluate the individual safety switches in an AR
switch chain and to reliably interrupt a safety circuit.
The unit has two inputs for the connection of an AR switch chain. The safety contacts
are switched as a function of the input signals. Downstream parts of the safety
circuit can be monitored using a feedback loop.
The switching states of the connected safety switches can be signaled by means
of monitoring outputs.
If the actuator on one of the safety switches in the AR switch chain is moved out
of the operating distance or if guard locking is deactivated, the AR evaluation unit
opens its relay contacts and the corresponding monitoring output is switched off.
The system is designed so that failures will not result in the loss of the safety function. The occurrence of failures is detected by cyclic self-monitoring at the latest
at the next demand to close the safety contacts.
The system can be started either manually using a start button or automatically.
UB
UB
X5:4
X6:4
DC 24 V
098225
X6:3
0V
CES-AR
Mounting
X6:2
DIA
Caution!
IA
X8:1
switch chain
X8:3
UB AR
Block diagram CES-AR-AES-12
IB
X8:4
X8:2
0V AR
Moni toring Outputs
X3:1O2X3:2
X3:3O4X3:4O5X7:1O6X7:2O7X7:3O8X7:4O9X4:1
O1
O3
X4:2
O10
X4:3
O11
X4:4
X6:1
O12
OUT AR
X5:1Y2X5:2
Feedback
Loop
Fig. 1: Block diagram AR evaluation unit
Safety switches must not b e bypassed (bridging of contacts), turned away,
removed or otherwise rendered ineffective.
Ì On this topic pay attention in particular to the measures for reducing the pos-
sibility of bypassing according to EN 1088:1995.A2:2008, sec. 5.7.
Ì The AR evaluation unit must be mounted in a control cabinet with a minimum
degree of protection of IP 54. A snap-in element on the rear of the device is
used for fastening to a DIN rail.
Ì If several evaluation units are mounted side by side in a control cabinet with-
out air circulation (e.g. fan), a minimum distance of 10 mm must be maintained between the evaluation units.
This distance enables the heat from the evaluation unit to dissipate.
S
Y1
X5:3
13 23
14 24
33 43
34 44
Important!
Follow the mounting instructions in the accompanying documents for the safety
switches connected.
6
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Electrical connection
Warning!
In case of an error, loss of the safety function through incorrect connection.
Ì Monitoring outputs must not be used as safety outputs.
Ì Lay the connection cables with protection to prevent the risk of short cir-
cuits.
Caution!
Risk of damage to equipment or malfunctions as a result of incorrect connection.
Ì All the electrical connections must either be isolated from the mains supply
by a safety transformer according to IEC 61558-2-6 with limited output voltage in the event of a fault, or by other equivalent isolation measures (PELV).
Ì 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 applies 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.
Ì All electrical outputs and safety contacts must have an adequate protective
circuit for inductive loads. The outputs must be protected with a free-wheeling diode for this purpose.
Ì The tightening torque for the screws on the connection terminals must be
0.6 ... 0.8 Nm.
Ì In order to avoid EMC interference, the physical environmental and operating
conditions at the installation site of the device must comply with the requirements according to the standard EN 60204-1:2006, section 4.4.2 (EMC).
Ì Please pay attention to any interference fields in case of devices such as
frequency converters or induction heating systems. Observe the EMC instructions in the manuals from the respective manufacturer.
Safety in case of faults
Ì The operating voltage U
Ì The connections UB AR and 0V AR for the read heads are not short circuit-
proof.
Ì A short circuit between safety contacts can only be detected by external puls-
ing.
Ì A short circuit in the cable can be excluded by laying the cable with protection.
is reverse polarity protected.
B
7
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Power supply
The power supply of 24 V DC is supplied to the AR evaluation unit. The AR switch
chain must be supplied with DC 24 V DC by the AR evaluation unit.
+24 V
0 V
0V
+UB
+UB
connected together
internally
CES-AR-AES
Fig. 2: Power supply
8
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Connecting AR switch chain
The AR evaluation unit has two safety inputs to which the AR switch chain is connected. Safety inputs IA and IB have short circuit and earth fault monitoring.
Important!
The AR switch chain must be supplied by the AR evaluation unit (terminals UB
AR
and
0VAR). An additional power supply may be required for these safety switches (e.g.
for guard locking), depending on which safety switches are used in the AR switch
chain (see Figure 5). In case of switches with guard locking, the supply for the
guard locking solenoid must be at the potential of the AR evaluation unit. Information on this is provided in the operating instructions of the respective safety switch.
A maximum of 12 safety switches can be connected.
Only safety switches that are suitable for operation in an AR switch chain can
be connected.
Safety switches with start input are not suitable for connection to an AR evaluation unit.
In the case Unicode switches, the actuators must be taught-in at the read head.
See the operating instructions for the related safety switch.
For the AR system to function, a bridging plug must be connected to the first
safety switch in the AR switch chain (or a jumper between IA, IB and UBAR).
CES-AR-AES
UB
0V
IB
IA
AR
AR
Connection for
guard locking
solenoid
CES-AR-C01 # n-1
Use common ground potential
for AR evaluation unit and operation of the solenoid!
See Connection example on
page 14.
CET-AR # n
Fig. 3: Schematic diagram showing connection of an AR switch chain
DIA
STATE
CES-AR-C.2 # 1
9
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Starting behavior
The AR evaluation unit can be placed in operation either using the autostart mode
or by starting it manually.
Important!
If the configuration for the starting behavior is changed during operation (e.g.
jumper removed), this change will be detected by the unit. The AR evaluation unit
assumes the fault state as soon as the next request to close the safety contacts
is received (see section Troubleshooting).
Connection for monitored, manual start
For a monitored, manual start, a start button is connected to terminal S. The start
button is supplied with a voltage of 24 V DC. The terminal +UB can be used for this
purpose. A sticking start button, for example, will be detected by the monitoring
function the next time the system is powered up.
The safety contacts close after max. 600 ms when the start button is pressed and
then released again (falling edge) and if the actuators for all the safety switches
connected are within the operating distance.
Important!
Warning!
UB
S
CES-AR-AES
Fig. 4: Monitored, manual start
The start button is only allowed to be pressed approx. 8 s after power on. If the
start button is pressed earlier, the unit will switch to the fault state and the LED
DIA illuminates. The LED STATE flashes (see section Troubleshooting).
Connection for automatic start
The safety contacts close immediately if all safety switches signal a safe state
and the feedback loop is closed.
Y1
S
CES-AR-AES
Fig. 5: Automatic start
10
Operating Instructions AR Evaluation Unit CES-AR-AES-12
For the autostart mode, a jumper must be connected between the terminals S
and Y1.
By pulsing the output signal on Y1 the device detects short circuits on starting
(e.g. static DC 24 V on input S).
Connecting safety contacts and feedback loop
Important!
If you do not connect the feedback loop, the downstream devices will not be
monitored. This situation will affect the safety category of your system.
The unit has four redundant, positively driven safety contacts that switch off immediately if the actuator is removed at one of the connected safety switches or
if a fault occurs. To check the switching state of a connected load, the auxiliary
contacts on a contactor or relay can be connected to terminals Y1 and Y2 to form
a feedback loop (see Figure 6).
+24 V
33 432313
CES-AR-AES
Subsequent
devices
(e.g. contactors)
14
24 34 44
Y2
Y1
Fig. 6: Safety contacts and feedback loop connected
The unit detects external short circuits on the feedback loop at the start by pulsing
the output signal on Y1 (e.g. static DC 24 V on the feedback loop).
11
Operating Instructions AR Evaluation Unit CES-AR-AES-12
If a feedback loop is not to be connected, a jumper must be fitted to the terminals
Y1 and Y2 (see Figure 7).
+24 V
23
33
43
13
CES-AR-AES
14
24 34 44
Y2
Y1
Subsequent
devices
(e.g. contactors)
Fig. 7: Safety contacts connected and jumper on the feedback loop
The following conditions must be met for the safety contacts to be closed:
For manual start
Ì The feedback loop is closed
Ì The start button has been pressed and released (switches on falling edge)
Ì All safety doors closed
For automatic start
Ì The feedback loop is closed
Ì All safety doors closed
If the feedback loop is open, the DIA LED flashes and the STATE LED is lit (see
section Troubleshooting). The monitoring output DIA is set.
The safety contacts remain open if the feedback loop is open at the start. The unit
switches to fault state, the DIA LED illuminates, and the STATE LED flashes (see
section Troubleshooting).
12
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Connecting monitoring outputs on the AR evaluation
unit
The AR evaluation unit has 14 short-circuit-proof semiconductor outputs that can
be used to signal different operating states, e.g. to a PLC. If the monitoring output
is active, a voltage of max. 24 V DC is present at the related terminal (referred to
the potential at terminal 0 V).
min. 0,8x UB ; max. 20 mA
O1
O2
O3
O12
OUT
AR
DIA
Fig. 8: Monitoring outputs CES-AR-AES
Significance of the signals with monitoring output active:
Ì O1 ... O12: Status of safety switches 1 ... 12
(actuator at operating distance or guard locking status)
Ì OUT AR: All connected safety switches in state Enable.
(All actuators in operating distance and all guard locking devices
active)
Ì DIA: Fault on the AR evaluation unit or on a safety switch in the AR
switch chain, or feedback loop was open during start (see section
Troubleshooting)
Assignment of safety switches to monitoring outputs
At least one monitoring output is assigned to each safety switch in the AR switch
chain. The safety switch with bridging plug has the monitoring output O1. From
here, the output assignments are incremented up to the last switch in the chain.
Several monitoring outputs are occupied depending on the switch type, e.g. one
monitoring output for the door position and one for the guard locking status.
The table below shows how many monitoring outputs the individual safety switches
occupy.
Series Number (type) of monitoring outputs
CES-AR
CET1/2-AR
CET3/4-AR
(door position, OUT or diagnostics DIA)
(status of guard locking OUT)
(door position OUT D and status of guard locking OUT)
1
1
2
13
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Connection example
24V
0V
-B1
Actuator
- S18
13 14
Read Head
CET
X2:4
-U1
-U2
UCM
X2:1
X2:5
0V(UCM)
Read Head
Read Head
J
X2:3
RD
LED1
UB
2
RST6IA
8
IB
1
Safety Output
7
0V
UB
2
CES
5
OUT
RST6IA
8
3
4
OA
OB
IB
1
Safety Output
7
0V
UB
X1:2
Door
24 V DC
Moni toring
X1:7
0V
CES
X2:2
X1:8
Moni toring
Output
OUTD
5
RST
OUT
X1:5
OUT
3
OA
X1:6
4
OB
IA
Safety
Inputs
Safety
Output
X1:3OAX1:4
X1:1
IB
Safety
Output
OB
24V
-K1
0V
X6:3
X6:4
DC 24 V
0V
X5:4
098225
CES-AR
X6:2
X8:1
X8:3
DIA
UB
UB
IA
switch chain
X8:4
UB AR
X8:2
0V AR
IB
Moni toring Outputs
X3:1O2X3:2
X3:3O4X3:4O5X7:1O6X7:2O7X7:3O8X7:4O9X4:1
O1
O3
X4:2
O10
X4:3
O11
X4:4
X6:1
O12
OUT AR
X5:1Y2X5:2
Feedback
Loop
S
Y1
X5:3
13 23
14 24
33 43
34 44
Fig. 9: Connection example for a mixed switch chain with 2 x CES-AR and 1 x
CET-AR
14
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Setup
Warning!
Ì Pay attention to the notes on commissioning and on the teach-in process in
the operating instructions for the safety switch used.
Ì In case of devices with teach-in input, ensure the circuit is correct.
Proceed as follows:
1. Ensure nobody can be placed in danger during setup.
2. Prior to setup, check whether all connections are correct (jumpers connected,
external circuit correct) and the AR switch chain is fitted with a bridging plug.
3. Close all safety guards and make sure that the feedback loop on the evaluation
unit is closed.
4. Switch on the power supply.
¨ The switches in the chain are initialized on starting. Unicode switches that have
not yet taught-in an actuator on starting, automatically teach-in the actuator.
This process can take up to one minute.
Important!
¨ If the AR evaluation unit is set up for automatic start, the OUT LED flashes and
signals that the self-test is being performed. After the self-test, the OUT and
STATE LEDs are continuously lit.
or
¨ If you start the AR evaluation unit manually, the STATE LED flashes and signals
that the self-test is being carried out. After the self-test, the STATE LED illumi-
nates continuously. The OUT LED flashes, since no start command has been
issued yet.
5. Press the start button (only necessary for manual start).
6. Then press the RST button on the AR evaluation unit for approx. 3 s to re-start
the device.
7. Check the correct function of the safety circuits connected. In case of problems,
see section Troubleshooting.
Use the status table in the section Troubleshooting to check the overall function.
In addition, the status LEDs on the respective safety switches provide information
about the status of the respective switch.
15
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Status LEDs, control elements and terminal assignment
The AR evaluation unit has status LEDs for the most important operating states.
The significance of the individual LED states is explained in the System Status table
in the section Troubleshooting.
13
14
23
24
33
34
43
44
OUT
Y1
+UB
0V
DIA
AR
+UB
S
Y2
EUCHNER
DIA OUT STATE
Safety Unit
O5
IA
O6
IB
RESET
O7
UB
AR
O8
0V
AR
CES-AR-AES-12
O3
O2
O1
O11
O10
O9
O4
O12
Fig. 1: Terminal assignment, LEDs and reset button
LED indicators
LED Color Significance
STATE
OUT
DIA
green Device status
yellow Switch chain status
red Fault display
33
232413
34
14
EUCHNER
Safety Unit
CES-AR
O3
O1
O11O2O10
O9
43
44
O4
O12
OUT
AR
Y1
Y2
DIA OUT STATE
RESET
O6
O5
IB
IA
+UB
0VSDIA
+UB
O8
O7
0V
UB
AR
AR
Troubleshooting
Reset button
With the reset button pressed, the power supply for the AR evaluation unit and as
a result for the entire AR switch chain is interrupted. After it is released, the AR
evaluation unit and the switches connected restart with a self-test.
16
Operating Instructions AR Evaluation Unit CES-AR-AES-12
System status table
Indicator LEDs
Door monitor-
ing outputs
Operating mode
Self-test
Normal operation
Fault display
Actuator/
guard position
X off
open off
closed On
closed off
closed off
X X
X off
X off
X off
X off
X off
Safety outputs
OA and OB
DIA (red)
4 x On On
OUT (yel-
low)
3 Hz On off
X 7 x off On
STATE
(green)
15 Hz
(8 s)
off off Self-test after power up
off off Normal operation, at least one door open
On off Normal operation, all doors closed
1 x off On
2 x off On
4 x off On
5 x off On
6 x off On
OUT AR
State
DIA
Normal operation, all doors closed, start button not
pressed or fault in the feedback loop
Normal operation, all doors closed, feedback loop
was open during attempt to start
Faulty data transmission for status signals (safety
circuit not affected)
Fault in the AR switch chain (e.g. fault on starting the
switch chain or more than 12 devices connected)
Fault on the safety outputs or on the start button
(e.g. start configuration changed in operation, no/
erroneous signals from the switch chain, broken
cable on one of the channels I
ground fault on one of the cables I
Fault on the safety relay, re-start device.
If fault is still indicated, contact manufacturer.
Internal component fault, re-start device.
If fault is still indicated, contact manufacturer.
- Fault in feedback loop,
feedback loop not connected on power up
-
- missing jumper between Y1/Y2
or
- Fault in the start button,
- on autostart: jumper between S/UB instead of S/
Y1
- Start button stuck
or IB, or short circuit/
A
or IB)
A
e.g.
e.g.
Key to symbols
X off
off On Start failed three times, contact manufacturer
LED not illuminated
LED illuminated
15 Hz (8 s)
3 x
X Any state
LED flashes for 8 seconds at 15 Hz
LED flashes three times
17
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Technical data
Parameter
min. typ. max.
Value
Unit
Housing material Plastic PA6.6
Dimensions 114 x 99 x 22.5 mm
Weight 0.25 kg
Ambient temperature at U
= DC 24 V -20 - +55 °C
B
Atmospheric humidity, not condensing - - 80 %
Degree of protection according to EN 60529 IP20
Degree of contamination 2
Mounting DIN rail 35 mm according to EN 60715
Connection (plug-in screw terminals/coded) 0.14 - 2.5 mm²
Operating voltage U
Current consumption I
External fuse (operating voltage U
(regulated, residual ripple < 5 %) 24 ± 10% V DC
B
(with relay energized)
B
) - 2.5 8 A gG
B
1)
- 1.2
1)
- A
Safety contacts 4 (relays with internally monitored contacts)
Switching current (relay outputs)
- at switching voltage AC/DC 21 ... 60 V
1 - 300
- at switching voltage AC/DC 5 ... 30 V 10 - 6000
- at switching voltage AC 5 ... 230 V 10 - 5000
External fuse (safety circuit) according to EN 60269-1 6 A gG or 6 A circuit breaker (characteristic B or C)
Utilization category acc. to EN 60947-5-1 AC-12 60V 0.3A / DC-12 60V 0.3A
AC-12 30V 6A / DC-12 30V 6A
AC-15 230V 5A / DC-13 24V 5A
Rated insulation voltage U
Rated impulse withstand voltage U
Resilience to vibration
i
imp
In acc. with EN 60947-5-2
Mechanical operating cycles (relays) 10 x 10
250 V
4 kV
6
Current via feedback loop Y1/Y2 5 8 10 mA
Permissible resistance via feedback loop - - 600
Monitoring outputs (O1 ... O12, DIA and OUT AR,
semiconductor outputs, p-switching, short-circuit-proof)
- Output voltage 0.8 x U
B
- U
B
V DC
- Max. load - - 20 mA
- Switching frequency - 1 - Hz
Start button input S, test input TST
- Input voltage LOW 0 - 2
HIGH 15 - U
B
V DC
- Input current HIGH 5 8 10 mA
Safety inputs IA, IB 2 (for CES-AR switch chain)
Number of connectible safety switches Max. 12
EMC protection requirements In acc. with EN 60947-5-3
Reliability values according to EN ISO 13849-1
as a function of the switching current at 24 V DC ≤ 0.1 A ≤ 1 A ≤ 3 A
Category 4
Performance Level (PL) e
PFH
d
1.5 x 10
-8
Mission time 20 years
Number of switching cycles/year 720 000 540 000 107 000
1) Taking into account the load currents at the monitoring outputs (20 mA each)
mA
W
18
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Dimension drawing
33
232413
34
14
EUCHNER
Safety Unit
CES-AR
45
43
44
OUT
0VSDIA
AR
Y1
Y2
DIA OUT STATE
RESET
+UB
+UB
114
99
Important!
O3
O1
O4
O11O2O10
O9
O12
O8
O6
O5
O7
0V
UB
IB
IA
AR
AR
Suitable for DIN rail
according to DIN 60715
System times for the AR system
Typical system times
Ready delay: After switching on, the unit carries out a self-test for 8 s. The system
is ready for operation only after this time.
Risk time according to EN 60947-5-3: If an actuator leaves the operating
distance, the safety contacts on the AR evaluation unit are opened at the latest
after 520 ms.
Difference time: The safety contacts on the AR evaluation unit switch with a
slight time offset. They have the same signal state at the latest after a difference
time of 10 ms.
The system times shown are maximum values for a circuit arrangement with
12 safety switches connected in an AR switch chain. Shor ter times can also be
achieved in circuits with fewer switches.
= Safety outputs active
= Switch-off time
t
off
= Fault time/event
t
0
Actuator removal
or deactivating of
Normal
operation
a guard locking
Non-identical input state
on IA/IB or short circuit
on IA or IB
or internal fault
Short circuit on IA/IB
Fault detection
t (ms)
t
= + 750 ms t
0
off
t
0
off
off
t
= = + 520 ms t
0
t 0 + 450 ms t
Fig. 9: System times for AR evaluation unit on an AR switch chain with 12 safety
switches
19
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Ordering information and accessories
Check whether all parts are complete. The connection terminals are not included
with the unit. Cables for connection of the AR switch chain must also be ordered
separately. Refer to the operating instructions of the safety switches used.
The following parts are supplied:
Ì 1 AR evaluation unit CES-AR-AES-12
Ì Safety information and maintenance (please retain!)
Ì CD with operating instructions (please retain!)
Series
AR evaluation unit
CES-AR-AES-12
Connection set
for AR evaluation unit CES-AR-AES-12
For ordering information on connection components, please refer to the accompanying documents, safety switches used or current sales documentation.
You can obtain additional installation material or spare parts from EUCHNER.
Inspection and service
Danger!
Regular inspection of the following is necessary to ensure trouble-free long-term
operation:
Category and PL according to EN ISO 13849-1
Plug-in screw terminals
Plug-in spring terminals
/
Version
4 / PL e
Order No.
098225
CES-AR-AES-12
104776
CES-EA-TC-AK08-104776
112629
CES-EA-TC-KK08-112629
Loss of safety function due to damage to unit or the connected safety switches.
In case of damage the related component must be replaced.
Ì Check the switching function
Ì Check the secure fastening of the devices and the connections
Ì Check for soiling (e.g. the ventilation slots on the housing)
No servicing is required, repairs to the device are only allowed to be made by the
manufacturer.
20
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Service
If service support is required, please contact:
EUCHNER GmbH + Co. KG
Kohlhammerstraße 16
D-70771 Leinfelden-Echterdingen
Service telephone:
+49 711 7597-500
E-mail:
info@euchner.de
Internet:
www.euchner.de
21
Operating Instructions AR Evaluation Unit CES-AR-AES-12
Declaration of conformity
22
Operating Instructions AR Evaluation Unit CES-AR-AES-12
23
More than safety.
Euchner GmbH + Co. KG
Kohlhammerstraße 16
D-70771 Leinfelden-Echterdingen
info@euchner.de
www.euchner.de
Edition:
098221-03-01/13
Title:
Operating Instructions AR Evaluation Unit CES-AR-AES-12
(translation of the original operating instructions)
Copyright:
© EUCHNER GmbH + Co. KG, 01/2013
Subject to technical modifications,
no responsibility is accepted for the accuracy
of this information.
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