System Manual
Non-contact Safety System
CES-A-S5H-01 (Unicode)
More than safety.
System Manual Safety System CES-A-S5H01
2
Contents
Correct Use 3
Possible combinations for CES components
4
Exclusion of Liability and Warranty
General Safety Instructions
System Description
Block diagram
Changing the approach direction
Installation
Electrical Connection 1
Safety in case of faults 1
Safety switch CES-A-S5... 1
Voltage drop as a function of switching current and cable length (examples) 1
Correct connection 1
Connection example 1
CES-A-S5H-01 1
Pin assignment safety switch CES-A-S5... 1
LED indicators 1
4
5
6
7
8
9
1
2
3
3
4
5
5
6
6
Reset 1
Teach-in function for actuator 1
Teach-in function for first actuator 1
Teach-in function for a new actuator 1
Functional check 1
System Status Table 1
Truth table 2
Pulse diagram 2
Technical Data 2
Safety switch CES-A-S5H-01 2
Actuator CES-A-BPA 2
Actuator CES-A-BBA 2
Position actuator CES-A-NBA-. 2
Inspection and Service 2
Service 2
Declaration of Conformity 2
6
7
7
7
8
9
0
0
1
1
3
5
6
8
8
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System Manual Safety System CES-A-S5H01
Correct Use
The Coded Electronic Safety switches series CES are safety devices for monitoring movable safety guards.
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.
Before safety switches are used, a risk assessment must be performed on the
machine in accordance with:
EN ISO 13489-1, 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, in particular
Important!
EN ISO 13489-1, 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 (PDF)
Along with the safety function, the safety switch CES-A-S... has an identification
function that provides position sensing. The position function has no safety function
and is not allowed to be used for safety-related polling.
The safety switch CES-A-C5... is only allowed to be operated in conjunction with the
designated EUCHNER actuators (see Combinations table). On the use of a different
actuator, EUCHNER provides no warranty for safe function.
The devices are intended for use in safety circuits and, together with
connected evaluation units, permit safety functions according to
DIN EN ISO 13849-1: 2008-12 - Table 8, such as a safety-related stop function, prevention of unexpected start-up, etc.
The safety-related function of the PDF is switch-off (low) of one of the
outputs (LA, LB) when the actuator is absent.
The user is responsible for safe integration of the device in a safe overall
system. For this purpose the overall system must be validated, e.g. in accordance with EN ISO 13849-2.
The permissible operating parameters must be observed for correct use
(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.
3
System Manual Safety System CES-A-S5H01
4
Possible combinations for CES components
Actuator
Safety switches
CES-A-BBA
071840
CES-A-S5H-01
090640
Combination possible
Combination possible, guard locking for process protection
Key to symbols
Combination possible, guard locking for personal protection
Combination not permissible
CES-A-BCA
088786
CES-A-BDA
084720
CES-A-BMB
077791
CES-A-BQA
098108
CES-A-NBA-...
All items
CES-A-BPA
098775
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 System CES-A-S5H01
General Safety Instructions
The number of teach-in and switching operations is saved in the internal memory in
the evaluation unit. If necessary, this memory can be read by the manufacturer.
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.
The year of manufacture of the device can be derived from the serial number on
the rating plate.
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 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
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
who have read and understood the operating instructions and the system
manual
Prior to use, read the operating instructions and the system manual of the CES
components used, 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 period 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 System CES-A-S5H01
6
System Description
The safety system CES-A-S... complies with the following safety requirements:
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 evaluation unit with self-monitoring. As a
result, the safety system is still effective even if a component fails.
The switching state of the semiconductor outputs is checked internally when
the safety guard is opened and closed.
The CES non-contact safety system consists of three components:
1 coded safety actuator as well as up to 14 coded position actuators (dogs).
Safety switch with integrated read head
Evaluation unit
On the safety switch CES-A-S... the read head is integrated with the evaluation unit
in a standard housing according to EN 60947-5-2.
Each delivered safety actuator possesses a unique electronic coding and so is
a unique element in the system used. The code in an actuator cannot be reprogrammed. The position actuators have a fixed transponder number from 2 to F
(hex). Up to a maximum of 15 different actuators can be used per device: 1 safety
actuator (red) and 14 different position actuators (green).
The evalation unit with integrated read head is fastened to the fixed part of the
safety guard.
The actuator fastened to the movable part of the safety guard is moved towards the
read head by closing the door. When the switch-on distance is reached, power is
supplied to the actuator by the inductive read head and data can be transferred.
For safety actuators the bit pattern read is compared with the code saved in the
evaluation unit, if the data match the safety outputs are enabled (semiconductor
outputs LA and LB). For position actuators the related transponder number is output
to a higher level control system on the four semiconductor outputs (D0, D1, D2,
D3) as a 4-bit binary code. The four LEDs (D0, D1, D2, D3) on the device indicate
the status of the semiconductor outputs (D0, D1, D2, D3).
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
evaluation unit will enter the safe state with every detectable fault.
The state of the safety outputs is monitored internally by two microprocessors.
On an internal fault in the evaluation unit, the safety circuit is switched off and the
OUT/ERROR LED illuminates red.
The evaluation unit has a redundant switching design with self-monitoring. This
means that the safety system is still effective even if a component fails.
System Manual Safety System CES-A-S5H01
M
~
~
M
1
1
0 V
24 V
D0
D1
D2
D3
+LA
+LB
Coded
actuator
Trans-
ponder
Read head with
evaluation unit
CES-A-S5H-01
Connection:
M23 plug connector
12-pin, screened
PLC
control system
Read head
Contactor X
Contactor Y
Output circuit for output A:
Pin assignment:
Pin
1
2
3
4
5
6
7
8
9
10
11
12
Function
LA
+LA
+UB
+LB
LB
0V
NC
D0
D1
D2
D3
NC
View on connector
for the safety switch
LA
+LA
LB
+LB
D0
D1
D2
D3
Safety outputs LA, LB
with operating voltage +LA, +LB
suitable for sensor pulsing (PSS)
Monitoring outputs for dog no.
Operating voltage +UB,
not suitable for sensor pulsing
Safety
CPU A
Safety
CPU B
Dog
CPU
Safety
DDSP
Read coil
Double
dynamic
safety
path
0V
Screen bonding clamp
LA
LB
1
2
3
4
5
6
7
8
9
10
1
12
Screen
bonding clamp
1
2
5
4
8
9
10
1
+UB
3
6
Plug housing
or
cable screen
State YE Out
RD ERROR
EUCHNER
Safety switch
CES-A-S5H-01
ID.-NR.:090640
SER.-NR.: . . .
D3 D2 D1 D0
Block diagram
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System Manual Safety System CES-A-S5H01
8
A
B
1
Changing the approach direction
Caution!
Risk of damage to equipment as a result of trapped cables.
Make sure that the cables are not trapped or torn off when the approach
direction is changed.
The active face of the read head can be adjusted in 5 directions. The face is marked
with the EUCHNER logo. The center of the circle corresponds to the middle of
the read head.
Remove clamp from read head by undoing the screws (1).
1.
Pull read head from the dovetail guide on the housing and rotate by 90° (ar-
2.
row A). Then place the active face on the read head in the required position by
rotating in the direction of arrow B).
Assemble in reverse order of disassembly.
3.
Active face
Read head
Evaluation unit
Clamp
System Manual Safety System CES-A-S5H01
min. 80mm
Operating
distance
Actuator
Operating
distance
Actuator
Flush mounting
Surface maounting
Installation
Caution!
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 according to EN 1088:1995.A2:2008, sec. 5.7.
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 dis-
tance to avoid mutual interference.
If the actuator is installed flush, the switching distance changes as a function
of the installation depth and the safety guard material.
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.
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System Manual Safety System CES-A-S5H01
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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
(see section Operating distances). To avoid entering the area of possible side
lobes, a minimum distance is to be maintained in case of a side approach
direction. See section Typical operating distance for the related actuator.
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.
they cannot be removed or tampered with using simple means.
Pay attention to the maximum tightening torque for the read head or safety
switch and actuator mountings of 1 Nm. For read heads/actuators made of
PE-HD, the maximum tightening torque is only 0.5 Nm.
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