Safety distance sensors | WTT12-S | WTT12S-C2569 | Functional principle: Photoelectric proximity sensor | Functional principle detail: Absence of reference object or reference surface | Switching output: Push-pull: PNP/NPN | Switching mode: Light switching | Connection type: Plug, M12, 5-pin | Analog output: - | Communication interface: - | Type of light: Visible red light | Adjustment: Teach-in button
Functional principle
Photoelectric proximity sensor
Functional principle detail
Absence of reference object or reference surface
Housing design (light emission)
Rectangular
Safety-related detection zone
150 mm ... 2,000 mm, Target with 6% remission or higher. The laser beam hits the target surface at an angle of incidence of 90°, the light spot is covered fully by the target. Distance front of sensor to reference surface: 150 mm ... 2,000 mm, distance reference surface to background, e.g., step/opening: > 85 mm1)
Type of light
Visible red light
Light source
Laser2)
Light spot size (distance)
Ø 15 mm (within the sensing range)
Maximum pulse power
< 250 mW
Wave length
658 nm
Pulse duration
0.004 µs
Laser class
1 (IEC 60825-1 / CDRH 21 CFR 1040.10 & 1040.11)
Adjustment
Single teach-in button (1 x)
Safety integrity level
SIL 1 (IEC 61508)
Performance class SRS/SRSS
C (IEC TS 62998-1)
Performance level
PL c (ISO 13849-1)
Category
Category 2 (ISO 13849-1)
MTTFD
138 years (ISO 13849-1)
PFHD(mean probability of a dangerous failure per hour)
3,3 x 10-7
DCavg
60 %
TM(mission time)
20 years (ISO 13849-1)
Maximum demand rate
36 /h
Test rate (external test)
At least 100 times the average expected demand rate (ISO 13849-1)
Supply voltage UB
10 V DC ... 30 V DC1)
Ripple
< 5 Vpp2)
Current consumption
≤ 25 mA3)
Switching output
Push-pull: PNP/NPN
Switching output (voltage)
LOW ≤ 3 VHIGH ≥ Uv - 2 V
Output function
Modulated 10 Hz ± 2% square wave, 50% duty cycle
Number of switching outputs
1
Switching mode
Light switching
Digital output to object
5 ms
Digital output to test input
10 ms
Test input behavior
High: Offset switchover from +35 mm to –35 mm
Test input voltage
LOW ≤ 3 VHIGH ≥ Uv - 4 V
Number of digital inputs
1
Input function
Diagnostics
Circuit protection
A4)B5)C6)
Protection class
III
Enclosure rating
IP67
Warm-up time
< 15 min7)
Initialization time
< 300 ms
Dimensions (W x H x D)
20 mm x 49.6 mm x 44.2 mm
Housing material
Plastic, VISTAL®
Optics material
Plastic, PMMA
Вес
48 g
Connection type
Plug, M12, 5-pin
Ambient operating temperature
–35 °C ... +50 °C1)
Ambient temperature, storage
–40 °C ... +70 °C
Typ. Ambient light immunity
Artificial light: 50 klxSunlight: 50 klx
Shock resistance
30 g (3 positive and 3 negative shocks along X, Y, Z axes, 18 total shocks (EN60068-2-27)) 11 ms25 g (1,000 positive and 1,000 negative shocks along X, Y, Z axes, 6000 shocks in total (EN60068-2-27)) 6 ms
Vibration resistance
20 Hz ... 1,000 Hz (1 g, for X, Y, Z axes, 1 octave/min (EN60068-2-6))20 Hz ... 2,000 Hz (10 g, RMS/axis (EN 60068-2-64))
EU declaration of conformity
✔
UK declaration of conformity
✔
ACMA declaration of conformity
✔
Moroccan declaration of conformity
✔
China RoHS
✔
cULus certificate
✔
TÜV approval
✔
TÜV approval annex
✔
EC-Type-Examination approval
✔
Laser safety (IEC 60825-1) certificate
✔
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