System Manual
Non-contact Safety System
CES-A-C5E-01/CES-A-C5H-01
(Unicode)
More than safety.
System Manual Safety System CES-A-C5...
Contents
Correct Use |
3 |
Possible combinations for CES components |
4 |
Exclusion of Liability and Warranty |
4 |
General Safety Instructions |
5 |
System Description |
6 |
Block diagram |
7 |
Changing the approach direction |
8 |
Installation |
9 |
Electrical Connection |
11 |
Safety in case of faults |
12 |
Safety switch CES-A-C5... |
13 |
Voltage drop as a function of switching current and cable length (examples) |
13 |
Correct connection |
14 |
Connection example |
15 |
CES-A-C5H-01 / CES-A-C5E-01 |
15 |
Pin assignment safety switches CES-A-C5... |
16 |
LED indicators |
16 |
Reset |
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Teach-in function for actuator |
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Teach-in function for first actuator |
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Teach-in function for a new actuator |
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Functional check |
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System Status Table |
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Technical Data |
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Safety switch CES-A-C5... |
0 |
Actuator CES-A-BPA |
2 |
Actuator CES-A-BBA/CES-A-BCA |
4 |
Inspection and Service |
26 |
Service |
26 |
Declaration of Conformity |
27 |
System Manual Safety System CES-A-C5...
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
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. Control circuit devices and switching elements. Requirements for proximity devices with defined behaviour under fault conditions (PDF)
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.
Important!
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.
Die sicherheitsgerichtete Funktion des PDF ist das Abschalten (low) eines der Ausgänge (LA, LB) bei Abwesenheit des Betätigers.
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.
System Manual Safety System CES-A-C5...
Safety switches
CES-A-C5E-01
077750
CES-A-C5H-01
091458
Key to symbols
Possible combinations for CES components
Actuator
BBA |
BCA |
BDA |
BMB |
BQA |
NBA-... |
BPA |
CES-A- 071840 |
CES-A- 088786 |
CES-A- 084720 |
CES-A- 077791 |
CES-A- 098108 |
CES-A- All items |
CES-A- 098775 |
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Combination possible
Combination possible, guard locking for process protection
Combination possible, guard locking for personal protection
Combination not permissible
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-C5...
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.
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.
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
Important!
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.
System Manual Safety System CES-A-C5...
System Description
The safety switch CES-A-C... meets the following safety requirements:
CES-A-C5E-01: Category 3, PLe according to EN ISO 13849-1
CES-A-C5H-01: 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:
Coded actuator
Safety switch with integrated read head
Evaluation unit
On the safety switch CES-A-C... the read head is integrated with the evaluation unit in a standard housing according to EN 60947-5-2.
Each delivered 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 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.
The bit pattern read is compared with the code saved in the evaluation unit; if the data matches, the safety outputs (semiconductor outputs) and the door monitoring output OUT (semiconductor output) are also set HIGH.
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.
When the safety guard is opened, the safety outputs switch off the safety circuit and the door monitoring output (OUT) is switched LOW. 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-C5...
Block diagram
Coded actuator
Read head with evaluation unit CES-A-C5...
Housing:
118 x 40 x 40 mm
Connection: M 12x1
8-pin, screened
Transponder
Read head |
Output circuit:
+LA
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LA |
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Power |
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supply |
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for load A |
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-LAB |
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RLoad A |
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Common ground for output A and B |
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Pin assignment: |
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Pin |
Core color |
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Function |
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1 |
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WH/white |
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0V |
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2 |
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BN/brown |
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+ U |
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3 |
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GN/green |
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LAB |
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YE/yellow |
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LB |
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GY/gray |
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OUT |
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PK/pink |
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+LA |
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BU/blue |
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-LAB |
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8 |
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RD/red |
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+LB |
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Screen bonding clamp
The screen on the connection cable is connected internally to the screen bonding clamp on the housing.
+LB (RD)
-LAB (BU)
LB (YE)
+LA (PK)
LA (GN)
OUT(GY)
+UB (BN) 0V (WH)
Safety PLC with static / dynamic signals
Test pulse 0
O1 Pulsed output
0 V
I1 Safety input
0 V
Test pulse 1
O9 Pulsed output
0 V
I9 Safety input
0 V
E2 Input
DC +24 V
0 V
example with |
PSS 3056 (PILZ) |
Connection |
safety PLC |
System Manual Safety System CES-A-C5...
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. It is marked by the red face.
1. Unscrew the screws on the fastening bracket.
. Pull the read head from the fastening bracket and tilt the read head by 90° (arrow 2).
The active face is now pointing downward.
3.Turn the read head by 180° (arrow 3).
4.Re-tighten the screws for the read head on the fastening bracket. Tightening torque 0.6 Nm.
Housing
Fastening bracket
Active face
Read
head
5.Remove the clip from the underside of the housing to change the lateral approach direction.
6.Pull the read head off the housing and turn it in 90°-steps in the desired approach direction.
7.Fit the read head to the housing and re-fit the clip.
Clip |
Housing |
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Read head
Other approach directions
System Manual Safety System CES-A-C5...
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 possibility 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 distance to avoid mutual interference.
min. 80mm
If the actuator is installed flush, the switching distance changes as a function of the installation depth and the safety guard material.
Flush mounting |
Surface maounting |
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Actuator |
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Actuator |
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Operating |
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Operating |
distance |
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distance |
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Note the following points:
Actuator and safety switch must be easily accessible for inspection and replacement.
The switching operation must only be triggered by the specific actuator designated for this purpose.
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