MINI-BEAM SM312 DC Series
Overview
- 10 to 30V dc supply voltage with bipolar NPN/PNP 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, blue 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 | 10 to 30V dc (10% max. ripple) @ less than 25 mA (exclusive of load) |
|---|---|
| Range | Opposed (long range):30 m Opposed (short range:3 m Opposed (clear plastic):0.3 m 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 Diffuse (long range):380 mm Diffuse (short range):300 mm Divergent Diffuse:130 mm Convergent:16, 43 or 49 mm, depending on model Plastic and Glass Fiber Optic:Range varies by sensing mode and fiber optics used |
| Supply Protection Circuitry | Protected against reverse polarity and transient voltages |
| Output Configuration | Bipolar:One NPN (current sinking) and one PNP (current sourcing); light operate (LO) or dark operate (DO) selectable |
| Output Rating | 150 mA max. each output @ 25° C, derated to 100 mA @ 70° C (derate approximately 1 mA per ° C)
OFF-state leakage current:less than 1 µA Output saturation voltage: PNP:less than 1V @ 10 mA and less than 2V @ 150 mA
NPN:less than 200 mV @ 10 mA and less than 1V @ 150 mA
|
| Output Protection Circuitry | Protected against false pulse on power-up and continuous overload or short circuit of outputs |
| Output Response Time | Response time is independent of signal strength. Sensors will respond to either a light or dark signal of 1 millisecond or longer duration, 500 Hz max.
Note:Models may be ordered with 0.3 millisecond ON/OFF by adding suffix MHS to the model number (example, SM312LVMHS). This modification reduces sensing range and excess gain. |
| Delay at Power-up | 100 milliseconds; outputs do not conduct during this time. |
| Repeatability | Repeatability is independent of signal strength.
Opposed:0.14 milliseconds Non-polarized and Polarized Retroreflective, Diffuse, Convergent, Glass and Plastic Fiber Optic:0.3 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 | Alignment Indicating Device system (AID) lights a rear-panel mounted red LED indicator whenever the sensor sees a light condition, with a superimposed pulse rate proportional to the light signal strength (the stronger the signal, the faster the pulse rate). |
| 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 4-conductor 2 m or 9 m cables, or 4-pin Euro-style QD. QD cable are ordered separately. |
| Operating Conditions | Temperature:-20° to +70° C Relative humidity:90% @ 50° C (non-condensing) |
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