OTMT Type-4 Safety Light Curtain

OTMT safety light curtain is verified, with a safety level of Type 4 PLe. It is compatible with both optical and linear synchronization methods, and features a compact size, exquisite appearance, and excellent performance. It is suitable for safety protection in hazardous environments such as vehicle separation, automation, mechanical presses, hydraulic presses, shearing machines, and bending machines.

Technical Specifications
**Standards:**
EN 61496-1 (Type 4 ESPE)
EN 61496-2 (Type 4 AOPD)
EN ISO 13849-1 (Category 4, PL e)
EN 61326-1
IEC 61496-1 (Type 4 ESPE)
IEC 61496-2 (Type 4 AOPD)
IEC 61326-1
ISO 13855
**Reference Standards:** 2014/35/EU (Low Voltage Directive); EN/IEC 61508; EN/IEC 61010-1; EN 60204-1; EN/IEC 62061
**Safety Category:**
**Safety Level:** Type 4, Category 4, PL e
**DCavg:** 99%
**CCF:** 100
**MTTFD/PFHD:** (See SMT type safety light curtain specification table)

Optical Characteristics

Detection Light Source: Infrared LED (wavelength 850nm)

Detection Accuracy: 14 mm, 30 mm, 46 mm

Detection Distance: Type A: 0～8m; Type B: 0～15m; Type D: 0～2m; Type E: 0～5m;

Detection Height: 112 mm～2872 mm (See SMT type safety light curtain specification table)

Effective Aperture Angle (EAA): Meets IEC61496-2 requirements; EAA < 2.5° when the detection distance is above 3m;

Environmental Characteristics

Ambient Temperature: Operating -10～55℃ (no frost or condensation)

Storage -30～70℃

Ambient Humidity: Operating 35%～85%RH

Storage 35%～95%RH

Light Interference Resistance: Incandescent Light Source ≥3000 Lux

Fluorescent Light Source ≥3000 Lux

Solar Source: ≥10000 Lux

Interference from the Same Source: Interference light from emitting elements of the same design will not cause dangerous failure of the SMT-type safety light curtain.

Protection Rating: IP65/P67 (IEC 60529)

Vibration Resistance: Frequency 10～55Hz, amplitude 0.35±0.05mm, 20 times each in X, Y, and Z directions.

Shock Resistance: Acceleration 10g, pulse duration 16ms, 1000 times each in X, Y, and Z directions.

Dimensions: 33*28*Jmm (J is the length of the emitter and receiver)

Electrical Characteristics:

Power Supply Voltage: 24V DC±20% (ripple ±5%)

Current Consumption (No Load): Emitter <200 mA

Receiver <200 mA

Response Time: 12ms～140ms (See SMT-type Safety Light Curtain Specifications)

Synchronization Method: Optical synchronization compatible with cable synchronization. **Safe Outputs (OSSDs)** PNP PNP transistor outputs ×2

On state: Load current ≤300mA, output voltage ≥Vcc-2V

Off state: Leakage current ≤1mA, residual voltage ≤1V (excluding the effect of wire extension)

Capacitive load: 0.9uF

Inductive load: 2H

**NPN NPN transistor outputs ×2**

On state: Load current ≤300mA, output voltage ≤2V

Off state: Leakage current ≤1mA, residual voltage ≤2V (excluding the effect of wire extension)

Capacitive load: 0.9uF

Inductive load: 2H

Start-up time: <2s

Detection function: Power-on self-test, real-time self-test during operation

Protection circuit: Overvoltage and overcurrent protection, output short-circuit protection

Anti-interference function: Optical interference avoidance algorithm; during optical synchronization, adjacent machines use different optical synchronization codes.