MINI-BEAM SM2A312 AC Series
Overview
- 24 to 240V ac supply voltage with SPST solid-state outputs
- Available in opposed, opposed clear plastic, polarized and non-polarized retroreflective, convergent, diffuse and divergent diffuse, and glass or plastic fiber optic sensing modes
- Convergent and fiber optic models with infrared or visible red or green LED light source, depending on application
- Opposed-mode models for clear plastic detection
- 18 mm threaded barrel or side mounting options
Product Specifications
| Supply Voltage and Current | 24 to 240V ac (50/60 Hz), 250V ac max. |
|---|---|
| Range | Opposed (long range):30 m Opposed (short range):3 m Opposed (clear object):0.3 m Diffuse (long range):380 mm Diffuse (short range):300 mm Divergent Diffuse:130 mm Non-polarized Retroreflective:5 m, range is specified using one model BRT-3 retroreflector Polarized Retroreflective:50 mm to 2 m, range is specified using one model BRT-3 retroreflector Polarized Retroreflective (extended range):10 mm to 3 m, range is specified using one model BRT-3 retroreflector Convergent:16 or 43 mm, depending on model Plastic and Glass Fiber Optic:Range varies by sensing mode and fiber optics used |
| Supply Protection Circuitry | Protected against transient voltages |
| Output Configuration | SPST SCR solid-state relay:Light operate (LO) or dark operate (DO) selectable; 2-wire hookup |
| Output Rating | Min. load current 5 mA max. steady-state load capability 300 mA to 50° C ambient
Inrush capability:3 A for 1 second (non repetitive); 10 A for 1 cycle (non repetitive) OFF-state leakage current:less than 1.7 mA rms ON-state voltage drop:less than or equal to 5 V @ 300 mA load, less than or equal to 10 V @ 15 mA load |
| Output Response Time | Response time is independent of signal strength. OFF response time does not include load response of up to ½ ac cycle (8.3 milliseconds). Response time of load should be considered when important.
Opposed:2 milliseconds ON; 1 millisecond OFF Non-polarized and Polarized Retroreflective, Convergent and Plastic Fiber Optic:4 milliseconds ON/OFF Diffuse and Glass Fiber Optic:8 milliseconds ON/OFF |
| Delay at Power-up | 300 milliseconds |
| Repeatability | Repeatabilty is independent of signal strength.
Opposed:0.3 milliseconds Non-polarized and Polarized Retroreflective, Convergent and Plastic Fiber Optic:1.3 milliseconds Diffuse and Glass Fiber Optic:2.6 milliseconds |
| Adjustments | Light/Dark-operate select switch and 15-turn slotted brass screw sensitivity (Gain) adjustment potentiometer, clutched at both ends of travel. Both controls are located on rear panel of sensor and protected by a gasketed, clear acrylic cover. |
| Indicators | Red LED on rear of sensor is ON when the load is energized |
| Construction | Reinforced thermoplastic polyester housing, totally encapsulated, o-ring sealing, acrylic lenses and stainless-steel screws |
| Environmental Rating | NEMA 1, 2, 3, 3S, 4, 4X, 6, 12 and 13; IEC IP67 |
| Connections | PVC-jacketed 2-conductor 2 m or 9 m cables, or 3-pin Micro-style QD. QD cable are ordered separately. |
| Operating Conditions | Temperature:-20° to +70° C Relative humidity:90% @ 50° C (non-condensing) |
| Application Notes | i.):Overload conditions can destroy ac MINI-BEAM sensors. Directly wiring sensor without load series across hot and neutral will damage sensor (except emitter models). ii.):Low voltage use requires careful analysis of the load to determine if the leakage current or ON-state voltage of the sensor will interfere with proper operation of the load. iii.):The false-pulse protection feature may cause momentary drop-out of the load when the sensor is wired in series or parallel with mechanical switch contacts. |
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