The Panasonic EX-28B is a ultra-compact Photoelectric Sensor: Ultra-compact Photoelectric Sensor, Narrow-view reflective (Long distance spot beam type), NPN.
Photoelectric sensors detect objects without contact by means of a light beam; thru-beam types (separate emitter and receiver) give the longest range and the most stable detection, while retroreflective and diffuse types need wiring on one side only.
More Panasonic sensors, PLCs and servo parts: Panasonic range.
Technical data
| Model | EX-28B |
|---|---|
| Series | Ultra-compact Photoelectric Sensor EX-20 Ver.2 |
| Sensing range | 45 to 115 mm 1.772 to 4.528 in with white non-glossy paper (100 x 100 mm 3.937 x 3.937 in), spot diameter dia. 5 mm with setting distance 80 mm |
| Sensing object | Opaque, translucent or transparent object |
| Hysteresis | 15 % or less of operation distance [100 x 100 mm 3.937 x 3.937 in with white non-glossy paper] |
| Repeatability (perpendicular to sensing axis) | 0.3 mm or less |
| Supply voltage | 12 to 24 V DC ± 10 % Ripple P-P 10 % or less |
| Current consumption | 15 mA or less |
| Output | NPN open-collector transistor |
| Output: Utilization category | DC-12 or DC-13 |
| Output: Short-circuit protection | Incorporated |
| Response time | 0.5 ms or less |
| Operation indicator | Orange LED (lights up when the output is ON) |
| Stability indicator | Green LED (lights up under stable light received condition or stable dark condition) |
| Sensitivity adjuster | Continuously variable adjuster |
| درجة الحماية | IP67 (IEC) |
| Ambient temperature | -25 to +55 degrees -13 to +131 degrees Fahrenheit (No dew condensation or icing allowed), Storage: -30 to +70 degrees -22 to +158 degrees Fahrenheit |
| Ambient humidity | 35 to 85 % RH, Storage: 35 to 85 % RH |
| Ambient illuminance | Incandescent light: 3,000 lx or less at the light-receiving face |
| Voltage withstandability | 1,000 V AC for one min. between all supply terminals connected together and enclosure |
At a glance
- Product details: Narrow-view reflective (Long distance spot beam type)[Side sensing]
- Emitting element: Red LED (modulated)
- Material: Enclosure: Polyethylene terephthalate Lens: Polyalylate
- Sensing object: Opaque, translucent or transparent object
Typical applications
- Electronic component handling
- Assembly and packaging machines
- Part presence detection on conveyors and feeders
- Counting and position checks
- Replacement of an identical sensor on an existing machine
Compatibility and replacement
Order with the complete Panasonic part number EX-28B; suffixes such as -P (PNP output), -C5 (5 m cable), -J (connector) or -R (rear sensing) change the version, so check the label of the old part.
If the label of the old part is worn or the model is discontinued, send us a photo and we will confirm the current Panasonic equivalent before quoting.
Replacement checklist
- Mounting dimensions
- Sensing mode (thru-beam, retroreflective, diffuse)
- Sensing range
Frequently asked questions
What is the protection rating?
IP67 (IEC), according to the Panasonic product data.
What light source does it use?
Red LED (modulated), according to the Panasonic product data.
What is the response time?
0.5 ms or less, according to the Panasonic product data.
What cable does it have?
0.1 mm2 3-core cabtyre cable, 2 m long, according to the Panasonic product data.
Can you help me identify the right replacement?
Yes. Send us a photo of the label of the old part, or its full order code, and we will confirm the exact match or the official successor before quoting.
How fast can you deliver, and is there a warranty?
Air shipping usually takes 5 to 7 days once the part is ready, to almost any country. Each part is new and original with a 1-year warranty. Message us on WhatsApp with the order number for a quotation.
Ordering tips
Send us the full order number from the label of the old part, or a clear photo of the label, together with the quantity you need. We check the number against the current manufacturer data before we quote and tell you if there is a newer replacement.
Need it fast? Send the order number, quantity and delivery country on WhatsApp or through the inquiry form and we reply with a quotation the same working day. All parts are new and original, covered by a 1-year warranty, and ship worldwide by air in 5 to 7 days once ready (shipping, payment and warranty). Local agents: Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.
