Forty-station assembly cell
One LG-03IN per station on a backplate, 300 mW each, all on 24 V. The Chinese menu lets the line leader re-teach a station after a fixture change.
Chinese menu · 300 mW · 12–24 V DC
LG Series Fiber Amplifier with Chinese Display
The same fiber port and the same 80 mm body as the LE series, but with a Chinese-language menu and a setting sequence that a line operator can follow without
Model LG-03IN / LG-03IP · Brand LE Raun · Category: Fiber Optic Sensors
DisplayChinese menu
Response16 – 25 µs
Supply12–24 V DC
OutputNPN / PNP
Overview
The LG series exists because the person who sets a fiber amplifier on a production line is usually not the person who chose it. A Chinese menu with the same parameter numbers as the engineering family means the setting can be written on a laminated card and followed without translation.Electrically it is a simpler amplifier than the LE-025N: three cores, no anti-interference link, four response modes from 1.5 ms. In exchange it draws a third of the power and takes 1.2 mm less space in each direction, which is what a dense cabinet backplate cares about.Like every amplifier in this chapter it is only half a system: the fiber unit decides the spot, the distance and the temperature. The amplifier decides how fast the result is available and how it is presented to the PLC.
Application scenarios
Bottle presence on a filling line
Diffuse unit LEWY-F5.0 at 180 mm, 3.2 ms mode, area detection on. The wide spot covers the bottle neck without a mechanical guide.
Carton flap check
Through-beam pair LEWY-D5 across the flap path, 6.4 ms mode. The slower mode ignores the dust that a corrugator throws up.
Small press with four lanes
Four LG-03IN set to F1–F4 on four Ø1 mm through-beam pairs, no interconnection between units.
Industries
- Packaging
- Food and beverage
- Electronics assembly
- Metal forming
Technical specifications
| Type | Fiber amplifier, open-collector output, Chinese-language display |
|---|---|
| Light source | Red 4-element LED |
| Response time | F1 16 µs · F2 19 µs · F3 22 µs · F4 25 µs |
| Output mode | LIGHT-ON / DARK-ON, programmable (M.S.R. + four logic functions) |
| Mutual interference | Prevented by the frequency-switching function — up to 4 units in a row |
| Detection mode | Fiber (area detection possible) |
| Delay function | OFF-delay / ON-delay / single-shot / ON-delay single-shot, 1–9999 ms |
| Protection | Reverse polarity, surge, over-current, ESD |
| Control output | NPN / PNP open collector 24 V, 100 mA (main unit only) · 20 mA with expansion unit · residual voltage ≤1 V |
| Timer range | 1–9999 ms |
| Useful functions | Parameter initialisation, key lock, two-point teach, full-auto / manual teach, fast saturation, area setting |
| Supply voltage | 12–24 V DC ±10 %, ripple (P-P) ≤10 % |
| Power consumption | 12–24 V DC ±10 %, ripple (P-P) ≤10 %, Class 2 |
| Ambient temperature | −20 to +55 °C, 35–85 %RH |
| Ambient light | Incandescent 20,000 lux · sunlight 30,000 lux |
| Vibration | 10–55 Hz, 1.5 mm amplitude, 2 h in X, Y, Z |
| Housing material | Polycarbonate |
| Dimensions | 30 mm (H) × 10.8 mm (W) × 80 mm (D) |
| Weight | Approx. 60 g |
Dimensions
| Item | Value |
|---|---|
| Body width | 10.8 mm |
| Body depth | 80 mm (30.6 mm to the display window) |
| Mounting slot | 10 mm from the cable end, M3 |
| Fiber port | Ø4.0 mm bore |
| Cable | 2 m, 3-core |
The body is 1.2 mm narrower and 1.2 mm shorter than the LE series, so a mixed row needs a shim or a separate bracket.
Wiring & output
| Core | Colour |
|---|---|
| 2 | Blue |
| 3 | Black |
How to specify
- 01
Chinese display or dual numeric display
Where the setting is done by a line operator, the LG's Chinese menu removes the guesswork; where an engineer sets it once from a printout, the LE's two numeric displays are faster to read.
- 02
Four units in a row means four frequency modes
Set F1, F2, F3 and F4 on adjacent amplifiers. There is no white core to chain, so the separation is by modulation frequency.
- 03
1.5 ms is the fast mode
The LG's fastest response is 1.5 ms — fine for a part above 3 mm at conveyor speed, not for a 0.3 mm wire. That is the boundary between this family and the LE-025N.
- 04
Pick the unit for the light budget
300 mW of amplifier power does not change the light budget: the sensing distance comes from the fiber unit, so choose the unit from the distance and the spot size first.
Why this series
A menu the operator can read
Chinese labels on the display, with the same parameter numbering as the LE series, so a setting sheet written for one family can be followed on the other.
300 mW at 24 V
Forty amplifiers in one cabinet draw 12 W instead of 36 W — the difference between a passive backplate and a fan.
Frequency switching instead of a signal core
Four modulation frequencies separate four adjacent units without any interconnection between them, which keeps a multi-lane row a three-wire job.
Area detection
The beam can be evaluated over a region rather than a point, so a label with print on it does not read as a gap and a mesh belt does not read as a part.
Questions
Is the LG-03IN a replacement for the LE-021N?
Functionally yes for slow applications, but not for fast ones: 1.5 ms against 60 µs. It is also 1.2 mm smaller in two dimensions, so the mounting holes do not line up.
Can the two families share fiber units?
Yes. Both use the same Ø4 mm port and the same lock lever, so any unit in this chapter fits either amplifier.
What happens if two adjacent units run the same frequency?
The receiver picks up the neighbouring emitter's modulated light and the output chatters. Four units, four modes — F1, F2, F3, F4.
Need a quotation for LG Series?
Send your application details or the guard opening dimensions and we will specify the right model and configuration for your machine.