SICK LE20 Betriebsanleitung Seite 331

Operating Instructions
LE 20
Type WS/WE 24-2
Order No.
Termination type
Scan. range /scanning range (max.)
Supply voltage U
V
Current consumption, max.
5
Ripple )
Light sender
Light spot diameter
Aperture angle/receiving angle
Supply connections
Signal voltage HIGH /
max. switching output
6
Signal voltage LOW )/
max. switching current
Output current I max. /
A
max. switching capacity
Pull-down resistance
7
Resp. time ); switch. sequence
8
max. )
Test input >>TI<<
Sender on
Sender off
9
VDE protection class )
Enclosure rating
Circuit protection
Ambient operating temperature T
Storage temperature T
L
Weight
Front screen heating
1) Adjustable sensitivity
2) The external voltage supply of the devices must withstand a momentary power failure lasting 20 ms (to EN 60204).
Suitable power supply units are available from SICK as accessories (Siemens series 6 EP 1).
3) Limit value
4) Without load
5) Must not overrange or underrange U
6) Where T = +25 °C and with 100 mA output current
U
7) Signal transit time with resistive load
8) With light/dark ratio 1:1
9) Rated voltage 50 V DC
8 008 685/Q913/2007-05-21
Appendix
Sender WS 24-2
D 250 D 260
2 021 448 2 021 450 2 021 452 2 021 454 2 021 449 2 021 451 2 021 453 2 021 455
terminal
connection
1
) typical 0 ... 40 m /max. 0 ... 50 m
24 V DC , ± 20%
4 ) 50 mA 70 mA
<5 V
SS
LED, visible red light, pulsating,
average service life 100,000 h
(at T = 25°C)
U
600 mm (approx.) at distance of 50 m
±4° (approx.)
TI to U or unswitched
V
TI to 0 V
IP 67
U connections reverse polarity protected, outputs Q and Q short-
V
circuit protected, noise pulse suppression
–40 ... +60 °C
U
–40 ... +75 °C
330 g (approx.)
–
tolerances
V
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
Receiver WE 24-2
D 450 D 460 P 250
equipment plug terminal
4-pin connection
2 3
) )
50 mA 70 mA 150 mA 170 mA 150 mA 170 mA
PNP, Q and Q
U – 2.9 V
V
0 V (approx.)
100 mA
>10 k
max. 500 µs; 1000/s
– –
Chapter 11
P 260 P 450 P 460
equipment plug
4-pin
–
Ω
–
–
GB
3 3 1