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SICK WSU 26/2 – WEU 26/2

8 008 692/9-12-99 Technical Description · WSU/WEU 26-2 © SICK AG · Safety Systems · Germany · All rights reserved

6 Mounting

6.1 Mounting

Requirements

The devices should be mounted
and connected in accordance with
the on-site application conditions
and connections, taking account of
the following:

The scanning range is based on the width of the area being
protected. Bypassing or encircling must be prevented by suitable
(mechanical) means.
Where one or more WSU/WEU units are used, the height and
number of light beams must comply with the applicable
regulations.
There must be no reflective surfaces in the emitting or receiving
beam path.
The minimum distance must be maintained.

6 Mounting

6.2 Detecting

Reflections

The light beam must not be
unintentionally reflected back to the
receiver by reflective surfaces.
Reflections can be detected as
follows:

Cover the light beam between the sender and receiver fully with
an obstacle (100 mm x 100 mm) and slowly move the obstacle
from the sender unit to the receiver unit.
While this is happening the green LED on the WEU must not
light up. If it lights up even just briefly during this check, reflection
is occurring.
See also 

8. Commissioning.

Fig. 11: Correct mounting, correctly aligned: reflective object outside divergent light beam.
No reflection. The obstacle is clearly detected.

Fig. 10: Incorrect mounting: reflective object in divergent light beam. No detection of the
obstacle due to reflection. No protection.

Central beam

Entry direction

Beam array
broken

Boundary
of point-of-
operation

Reflective object
(e.g. material container)

Central beam

Reflective object
(e.g. material container)

Boundary
of point-of-
operation

Entry direction

Beam array
broken

Содержание WEU 26/2

Страница 1: ...T E C H N I C A L D E S C R I P T I O N EASY INSTALLATION UNIVERSAL USABILITY SOLID CONSTRUCTION WSU 26 2 WEU 26 2 Photoelectric Safety Switch...

Страница 2: ...guarding 8 5 3 1 Mutual Interference 8 5 4 Corner Mirrors 10 6 Mounting 11 6 1 Mounting Requirements 11 6 2 Detecting Reflections 11 7 Electrical Connection 13 7 1 General 13 7 2 Wiring Diagram 14 8 C...

Страница 3: ...t protective system It consists of a WSU light sender and a WEU light receiver The light beam between the emitting and receiving units provides access protection for hazardous areas The safety switch...

Страница 4: ...the dangerous movement of the power driven machinery abbreviated as PDM 3 Description of Function The WSU and WEU are mounted separately in die cast housings Each has its own power supply Fig 2 The W...

Страница 5: ...er of 23 mm is fully covered The protective function of the WSU WEU is ensured when the conditions set out in the adjacent box are met 4 Possible Areas of Application and Application Conditions The po...

Страница 6: ...ted It must however be ensured that any hazardous state can only be initiated when there is no one in the hazardous area Use and mounting of the protective systems is subject to the rele vant official...

Страница 7: ...devices can be mounted in any operating position However the WSU and WEU should be mounted such that the axis of the light beam emitted by the WSU always matches the axis of the WEU optic alignment s...

Страница 8: ...ranging the WSU WEU 5 3 1 Mutual Interference The light beam of the WSU must only be received by the corresponding WEU To prevent mutual interference between several WSU WEU installations arranged adj...

Страница 9: ...26 2 WEU 26 2 8 008 692 9 12 99 Technical Description WSU WEU 26 2 SICK AG Safety Systems Germany All rights reserved Fig 7 Mounting of two WSU WEU units in series WEU WSU WSU WSU WEU WEU WSU WSU WSU...

Страница 10: ...42 m Tab 2 Reduction in scanning range when using corner mirrors Fig 8 Multi sided protection of hazardous areas Fig 9 Two beam protection with a WSU WEU 26 system Corner mirror Corner mirror 5 4 Cor...

Страница 11: ...ot be unintentionally reflected back to the receiver by reflective surfaces Reflections can be detected as follows Cover the light beam between the sender and receiver fully with an obstacle 100 mm x...

Страница 12: ...al Description WSU WEU 26 2 SICK AG Safety Systems Germany All rights reserved Fig 12 Distance a as a function of scanning range SR a mm 2500 2000 1500 1000 500 400 300 200 100 3 10 6 20 12 40 9 30 18...

Страница 13: ...ls At least two outputs must be connected to the downstream machine controller Fig 20 21 Each of the two outputs NO contacts must be assigned an electromagnetic switching element 7 Electrical Connecti...

Страница 14: ...r AC supply with PG connector Fig 13 Wiring diagram WSU WEU for 24 V DC supply with PG connector 1 2 3 4 5 6 7 8 9 PE 24V 1 2 3 10 11 PE 24V 0V 0V 1 2 3 4 5 6 7 8 9 PE 1 2 3 10 11 PE 230V 115 V N N 23...

Страница 15: ...4 2 3 4 5 6 1 A B C D E F G Coded to E or 4 Equipment plug PE 24V 0V 2 3 4 5 6 1 A B C D E F G Coded to B or 1 Equipment plug 1 2 3 4 5 6 7 8 9 1 2 3 6 4 5 2 3 4 5 6 1 A B C D E F G Coded to D or 5 Eq...

Страница 16: ...23 223 WSU 26 2 113 WSU 26 2 213 N 230V 115V PE PE 230V 115V 230V 115V 2 3 4 5 6 1 A B C D E F G Coded to F or 3 Equipment plug WSU 26 2 123 223 230V 115V 2 3 4 5 6 1 A B C D E F G Coded to C or 6 Equ...

Страница 17: ...06 613 Important Mark plug and socket unambiguously The WEU socket must not be connected to the WSU plug In some cases no longer complies with requirements for clearance and creepage distances VDE 016...

Страница 18: ...Germany All rights reserved Fig 20 WSU WEU 26 2 with Safety Interface LCU X 0V PE 24V S1 k1 k2 A1 A2 PE To PE T13 T14 X11 X12 T21 T22 X21 X22 13 23 31 2 C1 D1 PE C2 D2 PE T3 T4 C3 D3 PE C4 D4 14 24 32...

Страница 19: ...ication no 01131202933 1 2 1 1 2 3 1 2 3 2 3 WSU 24V 0V WEU A1 S52 S12 S22 S21 13 23 33 41 Y36 S11 Y1 Y2 A3 14 24 34 42 Y37 A2 3 2 3 24V Y32 Y35 0V Start 10 3 11 1 2 4 8 6 3 5 9 7 Outside switch cabin...

Страница 20: ...D on WEU remains lit x and y Insert in safe machine controller to interrupt the hazardous movement For safety reasons the two contact rows x and y must be inserted separately into the controller two c...

Страница 21: ...sert in safe machine controller to interrupt the hazardous movement For safety reasons the two contact rows x and y must be inserted separately into the controller two channel z If in exceptional case...

Страница 22: ...gnment aid AR 60 is available The alignment aid is clamped in front of the WSU and WEU respectively on a bracket Fig 25 which is mounted underneath the optic and held in place by two screws The AR 60...

Страница 23: ...been trained by SICK and have been assigned by their employers to perform such duties The front screens of the WSU and WEU should be cleaned at regular intervals according to the site conditions The s...

Страница 24: ...relay contact Relay defective Unit out of alignment Front screen dirty Test input sender interrupted Receiver WEU defective Sender WSU not emitting Sender WSU defective Units or corner mirrors out of...

Страница 25: ...A 10 VA Synchronization Optical Outputs Relay max operating frequency 0 2 Hz 1 operation in 5 s Switching current max min 2 A 0 02 A Switching voltage max min 250 V AC 24 V DC Response time 22 ms Conn...

Страница 26: ...2 99 Technical Description WSU WEU 26 2 SICK AG Safety Systems Germany All rights reserved 13 Dimensional Drawing 13 Dimensional Drawing 50 116 15 5 65 95 96 156 65 65 14 17 5 34 128 PG13 5 Dimensiona...

Страница 27: ...EU 26 2 8 008 692 9 12 99 Technical Description WSU WEU 26 2 SICK AG Safety Systems Germany All rights reserved 50 116 15 5 65 95 96 156 65 65 14 34 128 81 approx 50 mm Dimensional Drawing WSU 26 2 xx...

Страница 28: ...08 692 9 12 99 Technical Description WSU WEU 26 2 SICK AG Safety Systems Germany All rights reserved 50 116 15 5 65 95 96 156 65 65 14 34 128 100 approx 50 mm Dimensional Drawing WSU 26 2 xx1 and xx3...

Страница 29: ...00 10 124 149 160 177 8 5 14 2 5 7 80 96 5 8 5 80 63 40 8 5 8 5 69 5 146 5 40 5 4 5 76 Corner mirror PSK 45 Order number 5 306 053 Bracket for corner mirror PSK 1 Order number 2 009 292 26 20 M 8x30 S...

Страница 30: ...008 692 9 12 99 Technical Description WSU WEU 26 2 SICK AG Safety Systems Germany All rights reserved 50 5 4 119 65 5 65 12 3 7 3 50 5 140 4 65 5 65 11 8 7 3 Snow shield Order number 1 003 619 Dust sh...

Страница 31: ...range segment there is a sender and a receiver The beam diameter has changed WSU WEU 26 WSU WEU 26 2 33 mm 23 mm Connector version the previous connector no longer complies with requirements for clear...

Страница 32: ...U 26 2 221 1 015 740 WEU 26 2 221 1 015 750 Plug WSU 26 2 223 1 015 737 WEU 26 2 223 1 015 505 WEU 26 2 222 1 015 751 Plug 15 PE WSU 26 2 224 1 015 842 WEU 26 2 224 1 015 843 24 V DC 0 5 18 m PG WSU 2...

Страница 33: ...2 133 1 015 730 WSU 26 2 233 1 015 739 WSU 26 210 WSU 26 2 210 1 015 731 WSU 26 211 WSU 26 2 211 1 015 733 WSU 26 212 WSU 26 2 213 1 015 736 WSU 26 220 WSU 26 2 220 1 015 738 WSU 26 221 WSU 26 2 221...

Страница 34: ...ble receptacle straight 6 PE plastic 6 006 612 Cable receptacle angled 6 PE plastic 6 006 613 Cable receptacle 15 PE lateral cable outlet PG 16 2 019 076 Cable receptacle 15 PE straight cable outlet P...

Страница 35: ...Phone 3 58 9 728 85 00 Fax 3 58 9 72 88 50 55 F r a n c e Phone 33 1 64 62 35 00 Fax 33 1 64 62 35 77 G e r m a n y Phone 4976 81 2 02 0 Fax 4976 81 2 02 3815 G r e a t B r i t a i n Phone 44 17 27 8...

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