EUCHNER CET-AP -AH- Safety Switch Operating Instructions
Реклама
Реклама
More than safety.
Operating Instructions
Non-Contact Safety Switch with Guard Locking
CET.-AP-...-AH-... (Unicode)
Operating Instructions Safety Switch CET.-AP-...-AH-...
Contents
Scope
Correct use
Possible combinations for CES components
Exclusion of liability and warranty
General safety instructions
Function
Function of the electronics
Function of the guard locking
Mechanical release and mechanical key release (can be retrofitted)
Emergency unlocking (can be retrofitted)
Escape release (optional)
Wire front release (optional)
Lockout mechanism (optional)
Changing the approach direction
Mounting
Electrical connection
Notes for operation with safe control systems
Devices for direct connection IP65 field modules
Safety in case of faults
Fuse protection for power supply
Requirements for connection cables
Connector assignment of safety switch CET-AP with 2 x M12 plug connectors, 5-pin and 8-pin
Connector assignment of safety switch CET-AP for connection to decentralized peripheral systems
(2x M12, 5-pin, pin 5 not used)
Connecting the CET-AP (general)
Connecting a CET-AP to a decentralized peripheral system (e.g. ET200 series from Siemens)
Setup
LED indicators
Teach-in function for actuator
Functional check
System status table
Technical data
Technical data for safety switch CET.-AP-C..-AH-...
Dimension drawing safety switch CET.-AP-...
Technical data for actuator CET-A-BWK-50X
Ordering information and accessories
Versions for connection to decentralized peripheral systems (2 x M12, 5-pin, pin 5 not used)
Connection cables for connection to decentralized peripheral systems
Accessories
Inspection and service
Service
Declaration of conformity
28
28
30
32
33
33
33
21
22
23
24
24
24
26
27
33
34
35
36
5
10
11
12
13
8
9
6
6
14
15
17
18
19
19
19
20
21
3
3
4
4
2
Operating Instructions Safety Switch CET.-AP-...-AH-...
Scope
These operating instructions are valid for all CET.-AP-...-AH-... versions. These operating instructions and the enclosed data sheet form the complete user information for your device.
Correct use
The safety switch CET-AP is an electromagnetic interlock device with guard locking.
In combination with a safety guard and the machine control, this safety component prevents the safety guard from being opened while a dangerous machine movement is being performed.
For the control system, this means that
Ì starting commands which cause hazardous situations must become active only when the safety guard is in protective position and the guard locking is in locked position. The locked position of the guard locking must be released only when the hazardous situation is no longer present.
Before safety components 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, Annex B
Ì
EN ISO 12100, Safety of machinery – General principles for design – Risk assessment 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
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, Electrical equipment of machines
The safety switch is only allowed to be operated in conjunction with the intended
EUCHNER CET actuators and the related connection components from EUCHNER.
On the use of different actuators or other connection components, EUCHNER provides no warranty for safe function.
Important:
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
It is only allowed to use components that are permissible in accordance with the table below.
3
Operating Instructions Safety Switch CET.-AP-...-AH-...
Safety switch
Possible combinations for CES components
Actuator
CET-A-BWK-50X
096327
CET.-AP-...-AH-...
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.
4
Operating Instructions Safety Switch CET.-AP-...-AH-...
General safety instructions
Safety switches fulfill personal protection functions. Incorrect installation or tampering can lead to fatal injuries to personnel.
Check the safe function of the safety guard particularly
Ì after any setup work
Ì after the replacement of a CET 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.
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 accident prevention
Ì who have read and understood the operating instructions.
Important:
Prior to use, read the operating instructions and keep these in a safe place.
Ensure that the operating instructions are always available during mounting, setup and servicing work. 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 operating instructions. You can download the operating instructions from www.EUCHNER.de.
5
Operating Instructions Safety Switch CET.-AP-...-AH-...
Function
Recess
Lift tappet
Slide
Transponder
Spring-mounted guard locking pin
Function of the electronics
Safety switches series CET-AP permit locking of movable safety guards. They meet the following safety requirements:
Ì
Category 3, PLe according to EN ISO 13849-1 (head mounted upward)
Ì
Category 4, PLe according to EN ISO 13849-1 (head mounted downward or horizontal)
Ì
Redundant design of the circuit in the unit with self-monitoring
Ì
This means that the safety system still functions even if an internal component fails
Ì
The switch state of the semiconductor outputs is continuously monitored internally
Ì
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):
Ì
Safety guard closed
Ì
Guard locking active (actuator completely inserted into recess)
Ì
Feedback loop closed (only for version with feedback loop/start button)
The system consists of the following components: coded actuator (transponder) and switch.
Each actuator has a unique electronic coding and is therefore a unique element.
The code in an actuator cannot be reprogrammed.
The actuator must be assigned to the safety switch by a teach-in process so that it is detected by the system. This unambiguous assignment ensures a particularly high level of protection against tampering.
The safety switch with integrated evaluation unit and read head 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 inductive read head and data can be transferred.
The bit pattern read is compared with the code saved in the safety switch. If the data match, the safety outputs are enabled. On devices with monitoring output
(OUT), this is also switched off.
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.
The safety outputs shut down the safety circuit if the safety guard is opened. On devices with monitoring output (OUT), this is switched on. The state of the safety outputs is monitored internally by two microprocessors.
In the event of a fault in the safety switch, the safety circuit is switched off and the DIA LED illuminates red.
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.
6
Operating Instructions Safety Switch CET.-AP-...-AH-...
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 on the next demand to close the safety contacts (e.g. on starting).
7
Operating Instructions Safety Switch CET.-AP-...-AH-...
Important:
Function of the guard locking
Version CET1-AP, guard locking by spring force
The lift tappet is pressed into the locked position by the force of the spring for the guard locking pin in the actuator and unlocked electromagnetically by the safety switch. The guard locking functions in accordance with the closed-circuit current principle. The locked safety guard cannot be opened immediately in the event of interruption of the power supply to the solenoid.
The guard locking pin of the actuator cannot be moved out of the recess and the door is locked in the closed position as long as the lift tappet is pressed down by the actuator.
When the operating voltage is present at the locking solenoid, the lift tappet is extended and lifts the actuator's guard locking pin above the edge of the recess.
The safety door can then be opened.
Version CET2-AP, guard locking by solenoid force
The safety guard can be opened immediately in the event of interruption of the solenoid power supply! Usage only in special cases in accordance with strict evaluation of the accident risk (see DIN EN 1088 (1995), section 5.5)!
Example: If the risk of accidental locking inside a safety guard during a power failure is higher than the risk of ineffective guard locking.
The lift tappet is held in locked position by electromagnetic force and released by spring force. The guard locking operates in accordance with the open-circuit current principle.
The safety door can be opened as long as the lift tappet is held in the extended position.
The lift tappet is released when operating voltage is present at the guard locking solenoid. The actuator's guard locking pin can now press the lift tappet down.
The safety door is locked as soon as the guard locking pin is fully inserted into the recess.
Version CET3-AP, guard locking by spring force with door monitoring output
Function as for CET1-AP, but the door position is also monitored here. The door monitoring output OUT D is switched on as soon as the actuator protrudes beyond the extended lift tappet (state: door closed, guard locking not active). The output
OUT D also remains switched on when guard locking is active.
Devices for connection to decentralized peripheral systems do not feature a door monitoring output OUT D. Instead, the door position is indicated via LED 2.
Version CET4-AP, guard locking by solenoid force with door monitoring output
Function as for CET2-AP, but the door position is also monitored here. The door monitoring output OUT D is switched on as soon as the actuator protrudes beyond the extended lift tappet (state: door closed, guard locking not active). The output
OUT D also remains switched on when guard locking is active.
Devices for connection to decentralized peripheral systems do not feature a door monitoring output OUT D. Instead, the door position is indicated via LED 2.
8
Operating Instructions Safety Switch CET.-AP-...-AH-...
Important:
Mechanical release and mechanical key release
(can be retrofitted)
Ì
The mechanical release is not a safety function.
Ì
The machine manufacturer must select and use a suitable release (escape release, emergency unlocking, etc.) for a specific application. A risk assessment appraisal is required for this purpose. It may be necessary to take
Ì specifications from a product standard into account.
The mechanical key release must not be used to lock the switch during maintenance work to prevent activation of guard locking, for example.
Ì
The correct function must be checked at regular intervals.
Ì
Loss of the release function due to mounting errors or damage during mounting.
Ì
Ì
Check the release function every time after mounting.
Loss of the release function due to tension on the actuator. The door must not be under tension during release.
Ì
Please observe the notes on any enclosed data sheets.
The mechanical release can be used to unlock guard locking, irrespective of the state of the solenoid.
Using mechanical release
1. Unscrew locking screw
2. Using a screwdriver, turn the mechanical release by around 180° in the direction of the arrow
¨
The safety device can be opened
The mechanical release must be returned to its original position and sealed after use (for example with sealing lacquer).
Using mechanical key release
On devices with mechanical key release (can be retrofitted), simply turn the key to unlock. For mounting, see the mechanical key release supplement.
On devices with monitoring output OUT, this is switched off; OUT D can assume an undefined state. Open the safety door and close it again after resetting the mechanical release. The device will then operate normally again.
9
71
Operating Instructions Safety Switch CET.-AP-...-AH-...
Detent bolt
Important:
Important:
Emergency unlocking (can be retrofitted)
Ì
Emergency unlocking is not a safety function.
Ì
The machine manufacturer must select and use a suitable release (escape release, emergency unlocking, etc.) for a specific application. A risk assessment appraisal is required for this purpose. It may be necessary to take specifications from a product standard into account.
Ì
The correct function must be checked at regular intervals.
Ì
Loss of the release function due to mounting errors or damage during mounting.
Ì
Check the release function every time after mounting.
Ì
Loss of the release function due to tension on the actuator. The door must not be under tension during release.
Ì
Please observe the notes on any enclosed data sheets.
Emergency unlocking can be used to unlock guard locking, irrespective of the state of the solenoid. For mounting, see the mounting supplement.
Using emergency unlocking
The door must not be under tension when emergency unlocking is actuated.
Ì
Turn emergency unlocking clockwise until it clicks into place.
¨
The safety device can be opened
To reset, press the detent bolt inward using a small screwdriver or similar tool and turn the emergency unlocking back.
On devices with monitoring output OUT, this is switched off; OUT D can assume an undefined state. Open the safety door and close it again after resetting emergency unlocking. The device will then operate normally again.
10
Operating Instructions Safety Switch CET.-AP-...-AH-...
Important:
Escape release (optional)
Ì
The escape release is not a safety function.
Ì
The machine manufacturer must select and use a suitable release (escape release, emergency unlocking, etc.) for a specific application. A risk assessment appraisal is required for this purpose. It may be necessary to take specifications from a product standard into account.
Ì
The correct function must be checked at regular intervals.
Ì
Loss of the release function due to tension on the actuator. The door must not be under tension during release.
Ì
Please observe the notes on any enclosed data sheets.
The escape release is used to open a locked safety guard from the inside (see
dimension drawing in the section Technical data).
Fit escape release such that operation, inspection and maintenance are possible.
Using the escape release
Ì
Press the red release knob to the stop
¨
The safety device can be opened
Pull the knob out again to reset.
On devices with monitoring output OUT, this is switched off; OUT D can assume an undefined state. Open the safety door and close it again after resetting the escape release. The device will then operate normally again.
11
Operating Instructions Safety Switch CET.-AP-...-AH-...
Important:
Important:
Wire front release (optional)
Ì
The wire front release is not a safety function.
Ì
The wire front release is non-latching and therefore must not be used as an escape release unless the machine manufacturer itself provides a detent mechanism. The machine manufacturer must select and use a suitable release (escape release, emergency unlocking, etc.) for a specific application.
A risk assessment appraisal is required for this purpose. It may be necessary to take specifications from a product standard into account.
Ì
Loss of the release function due to tension on the actuator. The door must not be under tension during release.
Ì
The correct function must be checked at regular intervals.
The wire front release permits remote release of the guard locking via a pull rope.
Flexible routing of the pull rope permits release of the guard locking in inaccessible installation situations.
On devices with monitoring output OUT, this is switched off; OUT D can assume an undefined state. Open the safety door and close it again after resetting the wire front release. The device will then operate normally again.
Mounting the wire front release
Ì
Loss of the release function due to mounting errors, damage or wear.
Ì
Check the release function every time after mounting.
Ì
When routing the wire front release, ensure that it operates smoothly.
Ì
Observe the min. bending radius (100 mm) and minimize the number of bends.
Ì
The switch is not allowed to be opened.
Ì
Observe the notes on the enclosed data sheets.
12
Operating Instructions Safety Switch CET.-AP-...-AH-...
Important:
Important:
Locking function not active
Pushbutton
Lockout mechanism (optional)
Ì
The lockout mechanism is not a safety function.
Ì
The correct function must be checked at regular intervals.
The lockout mechanism can be used to prevent maintenance personnel from being unintentionally locked in the danger area, for example.
In locked position, the lockout mechanism prevents activation of guard locking.
The lockout mechanism can be secured in locking position with up to three locks.
The mechanical release can still be used.
Using the lockout mechanism
Deactivate guard locking and open the safety door before using the lockout mechanism.
Before entering the danger area:
1. Open the door
2. Press button, move lockout mechanism to locking position (Figures A and B) and secure with lock (Figure C)
¨
Guard locking cannot be activated, and it must not be possible to start the machine. Important: Test this before entering the danger area.
Resetting the lockout mechanism:
1. Open the safety door if necessary
2. Remove the lock
3. Move lockout mechanism to basic position (Figure A)
Locking function active
Push button and align lever
Locking function active and secured
Fit lock
Figure A Figure B
13
Figure C
Operating Instructions Safety Switch CET.-AP-...-AH-...
(1)
Using mechanical release
1. Unscrew locking screw
2. Operate the mechanical release through the threaded bore of the locking screw (e.g. with a metal rod ∅ 3 mm)
¨
The safety device can be opened
The locking screw must be screwed back in and sealed after use (for example with sealing lacquer).
On devices with monitoring output OUT, this is switched off; OUT D can assume an undefined state. Open the safety door and close it again after resetting the mechanical release. The device will then operate normally again.
(2)
Changing the approach direction
1. Remove the screws from the safety switch
2. Set the required direction
3. Tighten the screws with a torque of 1.5 Nm.
Figure 1: Changing the approach direction
14
Operating Instructions Safety Switch CET.-AP-...-AH-...
Mounting
Caution!
Caution!
Safety switches must not be 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 possibility of bypassing according to EN 1088:1995.A2:2008, sec. 5.7.
Ì
The max. achievable category according to EN 13849-1 depends on the installation position (see technical data).
Risk of damage to equipment and malfunctions as a result of incorrect installation.
Ì
Safety switches must not be used as a mechanical end stop. Fit an additional end stop for the movable part of the safety guard.
Ì
Observe the min. door radii (see figure below).
Ì
Ensure that the actuator contacts the slide in the designated area (see figure below). Marks on the slide specify the prescribed approach zone.
Ì
The prerequisite for trouble-free long-term operation is protection of the switch head against penetrating foreign objects such as swarf, sand, and blasting shot, etc. The switch should be installed with the actuating head down for this purpose.
Ì
Cover the switch before painting work. min R300 min R800
Figure 2: Door radii and approach zone
15
Operating Instructions Safety Switch CET.-AP-...-AH-...
!
= 90°
Note the following points:
Ì
Actuator and safety switch must be easily accessible for inspection and replacement.
Ì
The switching operation must only be triggered by the specific actuator designated for this purpose.
Ì
Actuator and safety switch must be fitted so that
Ì the actuator is positively mounted on the safety guard, e.g. by using the safety screws included.
Ì they cannot be removed or tampered with using simple means.
Ì the active faces of the actuator and the safety switch are parallel to each other (see figure on the left).
Ì the actuator is fully inserted into the switch recess when the safety guard is closed (see figure on the left).
Ì no dirt can accumulate in the recess.
!
16
Operating Instructions Safety Switch CET.-AP-...-AH-...
Electrical connection
Warning!
In case of an error, loss of the safety function through incorrect connection.
Ì
To ensure safety, both safety outputs (OA and OB) must always be evaluated.
Ì
The monitoring output OUT and the door monitoring output OUT D are not allowed to be used as safety outputs.
Ì
Lay the connection cables with protection to prevent the risk of short circuits.
Caution!
Risk of damage to equipment or malfunctions as a result of incorrect connection.
Ì
The power supply for the evaluation electronics is electrically isolated from the power supply for the guard locking solenoid.
Ì
The teach-in input and feedback loop, as well as LED 1 and LED 2 (only applicable to freely controllable LEDs), have the same ground potential as the guard locking solenoid.
Ì
The device generates its own clock signal on the output lines OA/OB. A downstream control system must tolerate these pulses, which may have a length of up to 1 ms.
The pulses are also output when the safety outputs are switched off.
Depending on the inertia of the connected device (control system, relay, etc.), this can lead to short switching processes.
Ì
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.
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
For use and applications as per the requirements, a connection cable listed under UL category code CYJV/7 must be used and the following requirements met: min. 30 V DC, 2 A, 85 °C. The EUCHNER connection cables in the section Ordering information and accessories meet these requirements.
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
All electrical outputs must have an adequate protective circuit for inductive loads. The outputs must be protected with a free-wheeling diode for this purpose. RC interference suppression units must not be used.
17
Operating Instructions Safety Switch CET.-AP-...-AH-...
Caution!
Important:
Important:
Ì
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 processing. The cable routing for safety circuits should be as far away as possible from the cables of the power circuits.
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.
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.
Notes for operation with safe control systems
Devices with start button and feedback loop are not suitable for connection to safe control systems.
Please observe the following requirements for connection to safe control systems:
Ì
Use a common power supply for the control system and the connected safety switches.
Ì
A clocked power supply must not be used for UB. Tap the supply voltage directly from the power supply unit. If the supply voltage is connected to a terminal of a safe control system, this output must provide sufficient electrical current.
Ì
Outputs OA and OB can be connected to the safe inputs of a control system.
Prerequisite: The input must be suitable for clocked safety signals (OSSD signals, e.g. from light curtains). The control system must tolerate clock pulses on the input signals. This normally can be set up by parameter assignment in the control system. Observe the notes of the control system manufacturer.
For the pulse duration of your safety switch, please refer to the section Typical
system times on page 29.
Ì
The following applies for single-channel control of the guard locking:
The guard locking (0V UCM) and the control system must have the same weight.
Ì
For two-channel control of the solenoid voltage by safe outputs of a control system, the following points must be observed (see also Figure 14):
Ì
If possible, switch off the pulsing of the outputs in the control system.
Ì
For devices with teach-in input J, the input must remain unswitched in normal operation.
Ì
Freely controllable LEDs may only be switched in parallel to the solenoid (i.e. the LED indicates whether the solenoid is energized).
A detailed example of connecting and setting the parameters of the control system is available for many devices at www.euchner.de in the download area » Applications
» CET. The features of the respective device are dealt with there in greater detail.
18
Operating Instructions Safety Switch CET.-AP-...-AH-...
Important:
Devices for direct connection IP65 field modules
The version CET.-AP-...-SI-... (connection plan B) is optimized for connection to decentralized peripheral systems, such as the ET200pro series from Siemens.
The devices are assigned parameters and connected like an OSSD (e.g. like light curtains).
The two 5-pin M12 plug connectors can be connected directly to the sockets of an IP65 field module (e.g. ET200pro) with the aid of the connection cables on
Page 33. If flying leads are used, connection to IP20 input and output modules (e.g.
ET200s) is naturally also possible.
Observe the following notes prior to connection:
Ì
Use only CET-AP versions that are listed in the ordering table on Page 33.
Ì
The operating voltage for the CET-AP must not be clocked. Parameter assignment might be required for the input/output modules (see application example at www.EUCHNER.de, in the area Download » Applications » CET).
Ì
Additionally observe notes from the control system manufacturer where necessary.
Safety in case of faults
Ì
The operating voltage U
B tected.
and the solenoid voltage U
CM
are reverse polarity pro-
Ì
The contacts OA/OB are short circuit proof.
Ì
A short circuit between OA and OB is detected by the switch.
Ì
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 I max
I max
= I
UB
+ I
OUT
* + I
OA+OB
(+ I
OUT D
*)
I
UB
= Switch operating current (80 mA)
I
OUT
= Load current of monitoring outputs (max. 50 mA per monitoring output)
I
OA+OB
= Load current of safety outputs OA + OB (2 x max. 200 mA)
* Only on devices with the corresponding monitoring output
19
Operating Instructions Safety Switch CET.-AP-...-AH-...
Caution!
Requirements for connection cables
Risk of damage to equipment or malfunctions as a result of incorrect connection cables.
Ì
Use connection components and connection cables from EUCHNER
Ì
On the usage of other connection components, the requirements in the following table apply. EUCHNER provides no warranty for safe function in case of failure to comply with these requirements.
Observe the following requirements with respect to the connection cables:
For safety switch CET-AP with plug connectors 2 x M12
Parameter
Wire cross-section min.
R max.
C max.
L max.
Recommended cable type
Value
0.34
60
120
0.65
LIYY 8x or 5x 0.34 mm²
Unit
mm²
W
/km nF/km mH/km
20
Operating Instructions Safety Switch CET.-AP-...-AH-...
wiring diagram A
Plug connectors
(view of connection side)
S1.2
S1.3
S1.4
2 x M12
S2.5
S1.1
S1.7
S1.6
S1.8
S1.5
S2.1
S2.2
S2.3
S2.4
Depending on version
PIN
S 1.1
S 1.2
S 1.3
S 1.4
S 1.5
S 1.6
S 1.7
S 1.8
Connector assignment of safety switch CET-AP with
2 x M12 plug connectors, 5-pin and 8-pin
Designation
Door monitoring output with without
-
U
B
OA
OB
OUT
-
0 V U
B
RST
Function
n.c.
Operating voltage, 24 V DC
Safety output, channel 1
Safety output, channel 2
Door monitoring output n.c.
Operating voltage, 0 V
Reset input
Wire color
Connection cable
1)
WH
BN
GN
YE
GY
PK
BU
RD
S 2.1
0 V U
CM
Operating voltage of guard locking solenoid 0 V
S 2.2
S 2.3
S 2.4
S 2.5
U
CM
LED 1 LED 1 red, freely configurable
2)
, 24 V DC
OUT D Door monitoring output (only CET3-AP and CET4-AP)
LED 1 LED 2 LED 1 red or LED 2 green, freely configurable
2)
, 24 V DC
Operating voltage of guard locking solenoid, 24 V DC
-
J
Y
Version with teach-in input:
To teach-in a new actuator, connect to 24 V DC; in normal operation connect to 0 V.
Version with feedback loop:
If the feedback loop is not used, connect to 24 V DC
B
Version without feedback loop and without teach-in input:
This connection must be connected to 0 V.
1) Only for standard EUCHNER connection cable
2) Can vary depending on version. See data sheet.
BN
WH
BU
BK
GY
wiring diagram B
Plug connectors
(view of connection side)
2 x M12
S1.5
S1.2
S1.3
S1.1
S1.4
S2.2
S2.3
S2.5
S2.1
S2.4
PIN
S 1.1
S 1.2
S 1.3
S 1.4
S 1.5
Connector assignment of safety switch CET-AP for connection to decentralized peripheral systems (2x
M12, 5-pin, pin 5 not used)
Designation
U
B
OA
0V
OB
-
Function
Operating voltage, 24 V DC
Safety output, channel 1
Operating voltage, 0 V
Safety output, channel 2 n.c.
Wire color
Connection cable
1)
BN
WH
BU
BK
GY
S 2.1
S 2.2
S 2.3
S 2.4
S 2.5
-
-
0V UCM
UCM
-
1) Only for standard EUCHNER connection cable
2) Can vary depending on version. See data sheet.
n.c.
n.c.
0V solenoid
Operating voltage of guard locking solenoid, 24 V DC n.c.
BN
WH
BU
BK
GY
21
Operating Instructions Safety Switch CET.-AP-...-AH-...
Connecting the CET-AP (general)
Connect the device as shown in Figure 3. The monitoring output OUT and, if available, the door monitoring output OUT D can be connected to a control system.
The switches can be reset via the RST input. To do this, a voltage of 24 V is applied to the RST input for at least 3 seconds. If input RST is not used in your application, it should be connected to 0 V.
Warning!
Important:
In case of an error, loss of the safety function through incorrect connection.
Ì
To ensure safety, both safety outputs (OA and OB) must always be evaluated.
Single-channel use of the safety outputs leads to a loss of the category in accordance with EN ISO 13849-1.
The subsystem CET-AP complies with PL e in accordance with EN 13849-1. To integrate the subsystem in a category 3 or 4 structure, it is necessary to monitor the downstream load (the feedback loop must be monitored).
These examples show only an excerpt that is relevant for connection of the CET system. The example illustrated here does not show complete system planning.
The user is responsible for safe integration in the overall system.
DC 24 V
-F2 -F1
Connected load
Safety outputs
M12 plug-connector
(5-pin)
CET-AP
M12 plug-connector
(8-pin)
GND
Figure 3: Connection example for version with teach-in input and 2 x M12 plug connectors
22
Operating Instructions Safety Switch CET.-AP-...-AH-...
Connecting a CET-AP to a decentralized peripheral system (e.g. ET200 series from Siemens)
Please observe the notes in section Devices for direct connection IP65 field modules on page 19 before connecting the device.
PLC decentralized periphery e.g. ET 200pro
DI
1
2
5
4
3
2
1 5
4
3
DO
X1: M12 plug-connector
(5-pin)
X2: M12 plug-connector
CET3-AP-...-SI-... / CET4-AP-...-SI-...
(5-pin)
Figure 4: Connection example for version for connection to decentralized peripheral systems (here: ET200pro)
23
Operating Instructions Safety Switch CET.-AP-...-AH-...
Setup
Important:
LED indicators
LED Color
STATE
green
State
illuminated flashing
Significance
Normal operation
DIA
LED 1
LED 2
red red green illuminated
Solenoid status
Door position status
*)
Can vary depending on version. See data sheet.
Teach-in operation or Power Up
(for further signal function see status table)
- Internal electronics fault
- Fault at the inputs/outputs
Teach-in function for actuator
The actuator must be allocated to the safety switch using a teach-in function before the system forms a functional unit.
During a teach-in operation, the safety outputs and the monitoring output OUT are in a high-resistance state, i.e. the system is in the safe state.
Depending on the version, the teach-in operation is automatic or is undertaken with the aid of the teach-in input J.
Ì
The switch must be fully connected as described in the section Electrical
connection to be able to use the following functions.
Ì
In case of version with teach-in input: For the teach-in standby state, the teach-in input J must be connected to +24 V DC (see Figures 3, 4 and 5). In normal operation connect the teach-in input to 0 V.
Ì
The safety switch disables the code of the previous actuator if teach-in is carried out for a new actuator. Teach-in is not possible again immediately for this actuator if a new teach-in operation is carried out. The disabled code is released again in the safety switch only after a third code has been taught.
Ì
The safety switch can only be operated with the last actuator taught.
Ì
If the switch detects the actuator that was most recently taught when in teach-in standby state, this state is ended immediately and the switch changes to normal state.
Ì
In case of versions with teach-in input: Teach-in standby state ends when the power supply to the teach-in input is interrupted.
Ì
The actuator being taught is not activated if it is within the operating distance for less than 60 s.
24
Operating Instructions Safety Switch CET.-AP-...-AH-...
CET1/3
DC 24 V
Devices with teach-in input:
Connect J to 24 V for teach-in
Preparing device for teach-in operation
Ì
Connect the switch as shown below, but do not apply any voltage to UB yet.
In case of version with teach-in input: For the teach-in standby state, the teach-input J must be reconnected from 0 V to +24 V DC. Important: In normal operation reconnect the teach-in input to 0 V.
In case of version without teach-in input: The circuit is the same, but connection J is omitted. Observe different control of guard locking for CET1/3 and
CET2/4.
CET1-... and CET3-...:
No voltage at UCM (guard locking active)
CET2/4
DC 24 V
CET2-... and CET4-...:
Voltage at UCM (guard locking active)
-F1 -F2
Devices with teach-in input:
Connect J to 24 V for teach-in -F1 -F2
GND
!
= 90°
GND
Actuator teach-in
1. Switch on operating voltage UB.
¨
The green LED flashes quickly (approx. 10 Hz)
A self-test is performed during this time (approx. 8 s). After this, the green
LED flashes cyclically three times and signals that it is in standby state for teach-in. Standby state for teach-in remains active for approx. 3 minutes.
¨
If the red LED is illuminated, there is a fault. Teach-in is not possible. The green
LED indicates the fault code. Diagnostics, see section System status table on page 27.
2. Activate guard locking.
CET1/3: no voltage at UCM.
CET2/4: Voltage at UCM.
3. Fully insert new actuator into the recess. Do not cant it; place it in the center of the recess (see picture on left).
¨
Teach-in operation starts, green LED flashes (approx. 1 Hz). The teach-in operation is completed after approx. 60 seconds and all LEDs go out.
4. Switch off operating voltage UB (min. 3 seconds).
¨
The code of the actuator that was just taught in is activated in the safety switch.
5. In case of version with teach-in input: Connect teach-in input to 0 V.
6. Switch on operating voltage UB.
¨
The device operates normally.
25
Operating Instructions Safety Switch CET.-AP-...-AH-...
Warning!
Functional check
Danger of fatal injury as a result of faults in installation and functional check.
Ì
Before carrying out the functional check, make sure that there are no persons in the danger area.
Ì
Observe the valid accident prevention regulations.
Mechanical function test
The actuator must slide easily into the recess on the actuating head. Close the safety guard several times to check the function.
Electrical function test
After installation and any fault, the safety function must be fully checked. Proceed as follows:
1. Switch on operating voltage.
¨
The machine must not start automatically.
¨
The safety switch carries out a self-test. The green LED STATE flashes for 8 s with 10 Hz. The green LED STATE then flashes at regular intervals.
2. Close all safety guards. Guard locking by solenoid force: Activate guard locking.
¨
The machine must not start automatically. It must not be possible to open the safety guard
¨
The green STATE LED illuminates continuously.
3. Enable operation in the control system.
¨
It must not be possible to deactivate the guard locking as long as operation is enabled.
4. Disable operation in the control system and deactivate guard locking.
¨
The safety guard must remain locked until there is no longer any risk of injury.
¨
It must not be possible to start the machine as long as the guard locking is deactivated.
Repeat steps 2-4 for each safety guard.
26
Operating Instructions Safety Switch CET.-AP-...-AH-...
System status table
LED indicator output
Operating mode State
Self-test
X off closed on off on
Normal operation
Teach-in standby
Setup
closed off on closed off open off open off closed
X
X off off off off off off off off off
X off off
Fault display
X
X
X off off off off off off
Key to symbols
on on off off off off
X off off on off off off
10 Hz (8 s)
X
3 x
X
10 Hz
(8 s)
1 x inverse
1 x
1 x
3 x
1 Hz
1 x
4 x
5 x
Self-test after power up
Normal operation, door closed and locked
Normal operation, door closed and locked, safety outputs not switched because:
- Feedback loop not closed
Normal operation, door closed and not locked
X
Normal operation, door open
Door open, unit is ready for teach-in for a new actuator
(only short time after power-up)
Teach-in operation
Positive acknowledgment after completion of teach-in operation
Fault on the power supply (e.g. clocked power supply; clocking must be switched off)
Fault in the teach-in operation
(e.g. actuator removed from the operating distance prior to the end of the teach-in operation or disabled actuator in the operating distance)
Output error
(e.g. short circuits, loss of switching ability)
Internal fault
(e.g. component fault, data error or short circuit at the outputs)
Internal fault
LED not illuminated
LED illuminated
LED flashes for 8 seconds at 10 Hz
LED flashes three times, and this is then repeated
Any state
After the cause has been remedied, faults can generally be reset by opening and closing the door. If the fault is still displayed afterward, briefly interrupt the power supply. Please contact the manufacturer if the fault could not be reset after restarting.
Important:
If you do not find the displayed device status in the System status table, this indicates an internal device fault. In this case, you should contact the manufacturer.
27
Operating Instructions Safety Switch CET.-AP-...-AH-...
Technical data
Note:
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.
Parameter
Technical data for safety switch CET.-AP-C..-AH-...
min.
Value typ.
max.
Unit
General
Material, slide
Material, safety switch housing
Installation position
Degree of protection
Safety class
Degree of contamination
Mechanical life
Ambient temperature at U
B
Actuator approach speed, max.
Locking force F max
Locking force F
Zh
in acc. with GS-ET-19
Weight
Degrees of freedom (actuator in recess) X, Y, Z
Connection type (depending on version)
Operating voltage U
B residual ripple < 5%)
(reverse polarity protected, regulated,
Current consumption I
B
For the approval according to UL the following applies
Switching load according to UL
External fuse (operating voltage U
B
)
External fuse (solenoid operating voltage U
CM
Resilience to vibration
)
EMC protection requirements
Safety outputs OA/OB
- Output voltage U
HIGH
LOW
OA
/U
U
OA
/U
OB
U
OA
/U
OB
OB
1)
Switching current per safety output
Utilization category according to EN 60947-5-2
-20
Stainless steel
Die-cast aluminum
Any (recommendation: switch head downward)
IP67
(screwed tight with the related mating connector)
III
3
1 x 10
6
operating cycles
-
20
6500
+55
F
Zh
= F max
/1.3 = 5000 approx. 1.0
X and Y: ± 5; Z: ± 4
2 plug connectors M12, 5- and 8-pin; or 2 plug connectors M12, 5-pin
24 ± 15% (PELV)
80
Operation only with UL class 2 power supply, or equivalent measures
0.5
DC 24 V, class 2
3
0.5
2 -
In acc. with EN 60947-5-2
In acc. with EN IEC 60947-5-3
Semiconductor outputs (p-switching, short circuit-proof)
Switching frequency
Repeat accuracy R acc. to EN IEC 60947-5-3
Monitoring outputs OUT and OUT D (optional)
Output voltage
Max. load
Teach-in input J or input feedback loop Y
HIGH
LOW
Solenoid
Solenoid operating voltage U regulated, residual ripple < 5%)
Current consumption solenoid I
CM
Power consumption
Duty cycle
Freely configurable LEDs
Operating voltage
Reliability values according to EN ISO 13849-1
Category
Performance Level (PL)
PFH d
Mission time
2)
(reverse polarity protected,
480
Max. 12
100
20.4
Head downward or horizontal
4 e
LED 1 red, LED 2 green
-
3.1 x 10
-9
/ h
20
1) Values at a switching current of 50 mA without taking into account the cable lengths.
2) Can vary depending on version. See data sheet.
U
B
- 1.5
0
1 200
DC-13 24V 200mA
Caution: outputs must be protected with a free-wheeling diode in case of inductive loads
0.8 x U
B
-
15
0
-
-
0.5
≤
10
(p-switching, short circuit-proof)
-
-
-
-
DC 24 V +10%/-15%
U
B
1
U
B
50
U
CM
1
26.4
Head upward
3 e
4.29 x 10
-8
/ h
20
°C m/min
N
N kg mm
V DC mA
A
A
V DC mA
Hz
%
V DC mA
V mA
W
%
V DC years
28
Operating Instructions Safety Switch CET.-AP-...-AH-...
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.
Switch-on time of safety outputs: The max. reaction time from the moment when the safety guard is locked to the moment when the safety outputs switch on T on
is 400 ms.
Risk time according to EN 60947-5-3: If an actuator moves outside the operating distance, the safety outputs OA and OB on the corresponding safety switch are deactivated after a maximum of 500 ms.
Difference time: The safety outputs OA and OB switch with a slight time offset.
They have the same signal state at the latest after a difference time of 10 ms.
Clock pulses at the safety outputs: The device generates its own clock signal on the output lines OA/OB. A downstream control system must tolerate these pulses, which may have a length of up to 1 ms.
This can usually be set up in the control systems by parameter assignment. If parameter assignment is not possible for your control system or if shorter clock pulses are required, please contact our support organization.
29
Operating Instructions Safety Switch CET.-AP-...-AH-...
Dimension drawing safety switch CET.-AP-...
42
30
41
M12
With escape release
LED 2
STATE
LED 1
DIA
Basic position for escape release
Release by pressing
Mechanical release
15
34
66,7
CET.-AP...CRA...
90,1
CET.-AP...CDA...
25
43,6
51,7
∅ 6,5
For M6 screw
DIN 1207 / ISO 4762
S2 (pin) S1 (socket)
75
With angle connectors
Lift tappet
Version with plug connectors 2 x M12
26,5
10,5
30
Operating Instructions Safety Switch CET.-AP-...-AH-...
With mechanical key release With emergency unlocking With front wire release
5,8
71 83
30
16,7
42
With lockout mechanism
85
31
Operating Instructions Safety Switch CET.-AP-...-AH-...
Technical data for actuator CET-A-BWK-50X
Parameter
Housing material
Stroke max.
Weight
Ambient temperature
Degree of protection acc. to EN
IEC 60529
Mechanical life
Locking force, max.
Installation position
Power supply min.
- 20
Value
typ.
Stainless steel
15
0.25
-
IP67
1 x 10
6
operating cycles
6500
Active face opposite switch head
Inductive via switch
Dwell time
1)
0.5
-
1) The dwell time is the time that the actuator must be inside or outside the operating distance.
max.
+ 55
-
Dimension drawing actuator CET-A-BWK-50X
6,5
8,5
22
5
Unit
mm kg
°C
N s
15
71
5
16 15
8
Active face
15
5
16
38
Tip!
Safety screws are included with the actuator.
32
Operating Instructions Safety Switch CET.-AP-...-AH-...
Ordering information and accessories
Versions for connection to decentralized peripheral systems (2 x M12, 5-pin, pin 5 not used)
Order No./item
CET3
111346
CET3-AP-CRA-AH-50X-SI-111346
114223
CET3-AP-CRA-AH-50X-SI-C2333-114223 l l l l l l
114626
CET3-AP-CRA-AH-50F-SI-C2357-114626 l l l l
105 mm
114073
CET3-AP-CRA-AH-50F-SI-114073 l l l l
75 mm
114516
CET3-AP-CRA-AH-50F-SI-C2333-114516
CET4
l l l l
75 mm
112082
CET4-AP-CRA-AH-50X-SI-112082 l l l
* For connection of the device, observe the specifications in the corresponding application example at www.euchner.de, in the area Download » Applications » CET.
l l l
B
B
B
B
B
B
Designation
Connection cable M12
PVC, 5-core, plug connectors at both ends
(for connection to decentralized peripheral systems)
Connection cables for connection to decentralized peripheral systems
Comment
M12 female plug 5-pin to M12 male plug, length 5 m
M12 female plug 5-pin to M12 male plug, length 10 m
M12 female plug 5-pin to M12 male plug, length 20 m
Order no./item
100180
100181
100182
Accessories
Designation
Mechanical key release
Replacement key
Emergency unlocking
Cover
Handle for wire front release
(Bowden)
Mounting plate EMP-L-CET
Mounting plate EMP-B-CET
Actuator
Safety screws (spare)
Use
for safety switch CET for mechanical key release, identical locking for safety switch CET for safety switch CET and actuators CET for safety switch CET for safety switch CET for actuator CET for safety switch CET for actuator CET
Version
identical locking, incl. 2 keys
2 keys, identical locking latching in both positions door hinge right door hinge left incl. safety screws
4 x M5 x 16 packaging unit: 100 ea.
Order No./item
098850
Mechanical key release
099434
Replacement key
103714
Emergency unlocking CET
CET cover right
098807
CET cover left
099795
Handle for wire front release (Bowden)
106695
EMP-L-CET
106694
EMP-B-CET
096327
CET-A-BWK-50X
073456
M5 x 16
33
Operating Instructions Safety Switch CET.-AP-...-AH-...
Inspection and service
Warning!
Loss of the safety function because of damage to the system.
In case of damage, the entire device must be replaced.
Only accessories or spare parts that can be ordered from EUCHNER may be replaced.
Regular inspection of the following is necessary to ensure trouble-free long-term operation:
Ì
Check the switching function (see section Functional check)
Ì
Check all additional functions (e.g. escape release, lockout mechanism, etc.)
Ì
Check the secure fastening of the devices and the connections
Ì
Check for soiling
No servicing is required, repairs to the device are only allowed to be made by the manufacturer.
Note:
The year of manufacture can be seen in the lower right corner of the rating plate.
The current version number in the format (V X.X.X) can also be found on the device.
34
Operating Instructions Safety Switch CET.-AP-...-AH-...
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:
Internet:
www.euchner.de
35
Operating Instructions Safety Switch CET.-AP-...-AH-...
Declaration of conformity
36
Operating Instructions Safety Switch CET.-AP-...-AH-...
37
More than safety.
Euchner GmbH + Co. KG
Kohlhammerstraße 16
D-70771 Leinfelden-Echterdingen [email protected]
www.euchner.de
Edition:
113858-03-03/13
Title:
Operating Instructions Manual Safety Switch CET.-AP-...-AH-...
(translation of the original operating instructions)
Copyright:
© EUCHNER GmbH + Co. KG, 03/2013
Subject to technical modifications; no responsibility is accepted for the accuracy of this information.
Third-party trademark information:
SIMATIC ET 200pro is a trademark of SIEMENS AG
Изтегляне
Публичната връзка е актуализирана
Публичната връзка към вашия чат е актуализирана. You may view and manage your chat links after registration here.
Публична връзка към документа
Реклама