# Solar Panel Layup and Bussing Machine: 10W to 600W Modules, TOPCon BC PERC HJT

> Solar panel layup and bussing machine combining string layup and bus ribbon soldering in one station, for 10W to 600W modules and TOPCon, BC, PERC and HJT cells, running inline with a stringer or standalone.

![Solar Panel Layup and Bussing Machine: 10W to 600W Modules, TOPCon BC PERC HJT](https://cdn.ooitech.com/runtime/image/w800_h600_fitblur_v2_ooitech-layup-bussing-machine-01.webp)

#### Solar Panel Layup and Bussing Machine: 10W to 600W Modules, TOPCon BC PERC HJT

Solar panel layup and bussing machine combining string layup and bus ribbon soldering in one station, for 10W to 600W modules and TOPCon, BC, PERC and HJT cells, running inline with a stringer or standalone.

##### Stock: Available | 30~60 days manufacturing time

##### Category: Product

##### Tags:

---

---

**Quick answer:** The Ooitech Layup and Bussing Machine combines two steps that are usually separate pieces of equipment — laying up solar cell strings onto the glass and soldering the bus ribbons — into a single station. It handles modules from 10 W to 600 W and works with TOPCon, BC, PERC and HJT cells. The machine runs in two modes: **inline, connected to your stringer**, or **standalone**, fed manually from trays. That second mode is what makes it practical for smaller lines, pilot production and R&D work, where a full inline layout cannot be justified.

PV Module Manufacturing · by Jerry, Ooitech

## Product Introduction

The Ooitech Layup and Bussing Machine is an all-in-one station for solar cell string layup and bus ribbon soldering. It is built around a **high-frequency electromagnetic welding** system with automatic temperature control, and it takes cell strings either from a connected stringer or from operator-loaded trays.

The machine consists of a loading transfer arm, fibre-optic sensing and mechanical positioning, a ribbon handling unit, the high-frequency welding head assembly, a cell string transfer section, a temperature control system, a junction box lead wire welding station, and an unloading transfer arm. A reserved port allows automatic loading to be added later without replacing the machine.

## Why Layup and Bussing in One Machine

On most lines, layup and bus soldering happen at two different stations with a buffer between them. Every transfer between stations is a chance to misalign a string, and every extra station costs floor space, operators and another set of handling hardware.

Combining the two steps removes that transfer. The string is positioned once, held, and the bus ribbons are soldered in the same fixture. In practice this shows up as three things:

- **Fewer handling steps** — one pick-and-place instead of two, which reduces the mechanical stress on cells and the chance of micro-cracks.
- **Smaller footprint** — one station instead of two, which matters most when retrofitting an existing building.
- **Tighter alignment** — layup position and solder position are referenced to the same fixture, so ribbon-to-string registration does not drift between stations.

## Two Operating Modes: Inline or Standalone

This is the feature that separates the machine from a fixed inline tool.

### Mode 1 — Inline, connected to a stringer

The machine accepts cell strings directly from an upstream stringer through the automatic loading port. The loading transfer arm takes two strings at a time, the vision or mechanical positioning system aligns them, the ribbon handling unit cuts and feeds the bus ribbon to the set length, and the welding head solders the string ends or the mid-points. The unloading arm then places the finished string group onto a pre-positioned glass station on the conveyor.

Running inline keeps throughput predictable and removes the manual loading step entirely. It is the right configuration for a line that already has a stringer and a conveyor.

### Mode 2 — Standalone, manual tray loading

The same machine can run completely on its own. The operator loads strings from trays into the magazine station; everything after that — positioning, ribbon cutting, soldering, and transfer to the glass station — is automatic.

Standalone operation is what makes the machine usable in situations where a full inline layout does not make sense:

- Pilot and R&D lines testing new cell formats or new bill-of-materials
- Smaller module assembly shops without a conveyor backbone
- Lines where the stringer and the layup station are deliberately kept apart for scheduling reasons
- Backup capacity: if the inline stringer stops, the machine keeps producing from trays

Switching between the two modes is a configuration choice, not a different machine. That means a line can start standalone and move to inline later as volume grows, without buying a second tool.

## Cell Technology Compatibility

The machine is specified for the four cell technologies that dominate current module manufacturing:

- **TOPCon** — the current mainstream for high-efficiency modules; the machine handles the thinner wafers these cells use.
- **BC (back-contact)** — back-contact strings can be upgraded with a 2+2 isolation-paper removal station, since BC layouts need the separator paper handled during layup.
- **PERC** — the established technology still running on a large share of installed capacity.
- **HJT** — heterojunction cells are temperature-sensitive, which is why the welding system uses high-frequency electromagnetic heating with closed-loop temperature control rather than a fixed thermal profile.

Cell thickness range is 0.13–0.25 mm, which covers the thin-wafer direction the industry is moving toward.

## Module Size Range: 10 W to 600 W

The machine covers small-format modules from about 10 W — the kind used in garden lighting, small off-grid kits and consumer products — through to 600 W and above for utility-scale modules. String length runs from 300 mm up to 2,500 mm depending on model, and string width from 83 mm to 210 mm.

That span matters because it lets one machine serve a product line that includes both small consumer modules and full-size panels, instead of needing separate tooling for each.

## Model Range and Specifications

Five models cover the range from small-format through to large-format modules:

| Specification | SAW-300A | SAW-400A | SAW-500A | SAW-500L | SAW-600A |
| --- | --- | --- | --- | --- | --- |
| Module format (L × W) | ≤1580 × 850 mm | ≤1600 × 1150 mm | ≤1950 × 1150 mm | ≤2500 × 1150 mm | ≤2500 × 1250 mm |
| String length | 300–1500 mm | 300–1600 mm | 300–1950 mm | 300–2500 mm | 600–2500 mm |
| String width | 83–210 mm | 83–210 mm | 83–210 mm | 83–210 mm | 166–210 mm |
| Cycle time | ≤15 s/group | ≤15 s/group | ≤15 s/group | ≤15 s/group | ≤16 s/group |
| Welding heads | 4+1 | 6 | 6 | 5 | 6 |
| Positioning | Mechanical + fibre-optic | Mechanical + fibre-optic | Mechanical + fibre-optic | Mechanical + fibre-optic | CCD vision |
| Power | AC380V/50Hz, 8 kW | AC380V/50Hz, 8 kW | AC380V/50Hz, 8 kW | AC380V/50Hz, 8 kW | AC380V/50Hz, 10 kW |
| Machine dimensions (L×W×H) | 6780×1676×1400 mm | 6560×1676×1400 mm | 6560×1676×1400 mm | 8560×1676×1400 mm | 5700×4800 mm (multi-section) |

## Shared Specifications Across All Models

| Parameter | Value |
| --- | --- |
| Cell breakage rate | ≤3‰ (grade-A cells) |
| Cell thickness | 0.13–0.25 mm |
| Bus ribbon specification | 4–8 × 0.15 mm |
| Welding method | High-frequency electromagnetic welding |
| Flux application | Ribbon immersion |
| Operating mode | Inline (connected to stringer) or standalone (tray loading) |
| Machine failure rate | ≤3% |
| Electrical system | PLC + touch screen + servo + linear modules |
| HMI | Touch screen with centralised numerical parameter setting |
| Fault alarm | Real-time fault alarms; ribbon presence/absence warning |
| Safety | Light curtain protection over the working area |
| Air supply | 0.6–0.8 MPa, 300 L/min, dried compressed air, 12 mm inlet |
| Machine colour | Traffic white |
| Software | Developed in-house; lifetime free upgrades |

## Core Components

The machine uses a mix of domestic and imported components, selected for serviceability rather than for brand name:

| Component | Origin / maker | Function |
| --- | --- | --- |
| Steel frame | Domestic, Q235 | Machine chassis |
| Servo motors | Domestic | Linear modules |
| Welding heads | Domestic, custom | High-frequency electromagnetic heating |
| Sensors | Imported | Positioning and detection |
| Pneumatic components | AirTAC / SMC | Whole machine |
| Circuit breakers | Chint | Control system |
| AC contactors | Schneider | Control system |
| Touch screen | MCGS, 10″ | Control system |
| Guide rails and screws | WON 1620 | X/Y modules |

## Consumables and Maintenance

Three items carry a defined replacement interval, which keeps planned maintenance simple:

| Item | Specification | Recommended interval |
| --- | --- | --- |
| Suction nozzles | — | 30 days |
| Belts | PTFE | 90 days |
| Air filter element | AFC30 | 90 days |

## Watch the Machine Run

The clip below shows the machine laying up cell strings and soldering the bus ribbons in a single pass.

## Choosing Between the Models

Model selection comes down to the largest module you intend to build and whether you need vision positioning:

- **SAW-300A** — small-format modules and compact lines; the entry point of the range.
- **SAW-400A** — standard 60-cell and 72-cell formats up to 1600 mm string length.
- **SAW-500A** — longer strings up to 1950 mm, still within a 6560 mm machine length.
- **SAW-500L** — the same width as the 500A but extended to 2500 mm strings; for large-format modules.
- **SAW-600A** — the widest format (up to 2500 × 1250 mm) and the only model with CCD vision positioning, which is the better choice when cell formats change often.

## About Ooitech

Ooitech supplies turnkey solar panel production line equipment and manufacturing solutions, from individual machines through to complete 5 MW to 1 GW module assembly lines, with equipment design, delivery, installation, operator training and after-sales support. To discuss whether the layup and bussing machine fits your line, [contact the Ooitech team](https://www.ooitech.com/Contact.html).

## Related Items

![SL-1000 Back Contact Cell Welder: 600 Cells/h](https://cdn.ooitech.com/static/upload/image/20260323/1774263750726273.webp)

#### SL-1000 Back Contact Cell Welder: 600 Cells/h

![PV Busbar Ribbon Integrated Drawing Rolling Tinning](https://cdn.ooitech.com/static/upload/image/20260511/2026051194879300.webp)

#### PV Busbar Ribbon Integrated Drawing Rolling Tinning

![STW-60A Shingled String Terminal Head: 20s/String](https://cdn.ooitech.com/static/upload/image/20260323/1774264892557837.webp)

#### STW-60A Shingled String Terminal Head: 20s/String

![Automatic Layout & Bussing Integrated Machine](https://cdn.ooitech.com/static/upload/image/20260324/1774346811981523.webp)

#### Automatic Layout & Bussing Integrated Machine

![ST-TLD3A+ IV Tester – PV Module Flash & Performance](https://cdn.ooitech.com/static/upload/image/20260326/1774514799764615.webp)

#### ST-TLD3A+ IV Tester – PV Module Flash & Performance

![Shingled Stringer SL-30C: ±0.15mm, 1800mm String](https://cdn.ooitech.com/static/upload/image/20260323/1774263321793147.webp)

#### Shingled Stringer SL-30C: ±0.15mm, 1800mm String

![Automatic Tape Sticking Machine: 25s Cycle, ±2mm](https://cdn.ooitech.com/static/upload/image/20260324/1774350079476146.webp)

#### Automatic Tape Sticking Machine: 25s Cycle, ±2mm

![C350-SZM Ribbon Busbar Bend Cutting Machine: 2-8mm](https://cdn.ooitech.com/static/upload/image/20260327/2026032780265832.webp)

#### C350-SZM Ribbon Busbar Bend Cutting Machine: 2-8mm

![](/template/ooitech/assets/img/shape/06.png)

![](https://cdn.ooitech.com/runtime/image/w800_h700_fitblur_v2_w800_h700_fitblur_v2_1757399770541443.webp)

### Request A Quote

All uploads are secure and confidential.

## We deliver expertise you can trust our service

Direct-from-Factory Equipment.

![](/template/ooitech/assets/img/icon/money-2.svg)

### Cost-Effective Advantages

We deliver exceptional value, maximizing results while optimizing budgets for clients.

![](/template/ooitech/assets/img/icon/staff.svg)

### Our Experience Team

Our skilled professionals specialize in innovative solutions and tailored strategies.

![](/template/ooitech/assets/img/icon/certified.svg)

### 15+ Years Industry Experience

Deep expertise ensures reliable, trend-aware, and proven outcomes for success.

![](https://cdn.ooitech.com/static/upload/image/20250910/1757477357667605.webp)

![](https://cdn.ooitech.com/static/upload/image/20250910/1757477724911512.webp)

![](/template/ooitech/assets/img/shape/06.png)

## What Our Client Say's about us

Client testimonials praise our deep understanding of their challenges, which leads to innovative solutions and strong ROI. Long-term collaborations—some over a decade—demonstrate their trust and satisfaction. Their success stories drive us to continually exceed expectations. [Know More **](#quote-form)

![](/template/ooitech/assets/img/icon/quote.svg)

Thanks to Ooitech for providing the fully automated production equipment—your installation and after-sales service have been excellent.

![Amjad](https://cdn.ooitech.com/runtime/image/w160_h160_fitblur_v2_2026041720921238.webp)

### Amjad

![](/template/ooitech/assets/img/icon/quote.svg)

Thanks to Ooitech for providing highly suitable BC solar cell experimental equipment.

![KTECH](https://cdn.ooitech.com/runtime/image/w160_h160_fitblur_v2_1776426122864564.webp)

### KTECH

![](/template/ooitech/assets/img/icon/quote.svg)

A man with a big soul. Thank you very much for your visit Mr Wu. Thank you very much for the services provided in installing equipment and training my students. The kindest person and professional in his field

![Jizzakh Polytechnic Institute](https://cdn.ooitech.com/runtime/image/w160_h160_fitblur_v2_2026041716444445.webp)

### Jizzakh Polytechnic Institute

![](/template/ooitech/assets/img/icon/quote.svg)

Thank you again so much again for the very big big help for improving and fixing the factory and also teaching the workers how to use the machines

![Mark](https://cdn.ooitech.com/runtime/image/w160_h160_fitblur_v2_1757479675272137.webp)

### Mark

BIPV Philippines

![](/template/ooitech/assets/img/icon/quote.svg)

thank you for ooitech's professional support and on time after service.

![Diarra From Africa](https://cdn.ooitech.com/runtime/image/w160_h160_fitblur_v2_1784509010217979.webp)

### Diarra From Africa

## Our Latest News & Blog

![TOPCon Solar Cell Manufacturing Process: Step-by-Step](https://cdn.ooitech.com/runtime/image/w320_h200_fitblur_v2_3fffaa885dcfbafc7d41439c979f3e14.webp)

- [** ooitech](./topcon-solar-cell-manufacturing-process-a-complete-step-by-step-guide.html)
- [** 2499](./topcon-solar-cell-manufacturing-process-a-complete-step-by-step-guide.html)

### TOPCon Solar Cell Manufacturing Process: Step-by-Step

TOPCon solar cell manufacturing process, step by step: texturing, boron diffusion, tunnel oxide and polysilicon deposition, metallisation and testing.

![Cosmic Solar Purchases 5MW Semi-Automatic Solar Panel](https://cdn.ooitech.com/runtime/image/w320_h200_fitblur_v2_2026041511844574.webp)

- [** ooitech](./cosmic-solar-purchases-5mw-semi-automatic-solar-panel-production-line-from-ooitech-in-2014.html)
- [** 1681](./cosmic-solar-purchases-5mw-semi-automatic-solar-panel-production-line-from-ooitech-in-2014.html)

### Cosmic Solar Purchases 5MW Semi-Automatic Solar Panel

In 2014, Indian company Cosmic Solar purchased a 5MW semi-automatic solar panel production line from Ooitech, marking an important milestone in Ooitech

![30MW BIPV Solar Panel Production Line](https://cdn.ooitech.com/runtime/image/w320_h200_fitblur_v2_2026041451376657.webp)

- [** ooitech](./30mw-bipv-solar-panel-production-line-in-philippines-powered-by-ooitech.html)
- [** 1680](./30mw-bipv-solar-panel-production-line-in-philippines-powered-by-ooitech.html)

### 30MW BIPV Solar Panel Production Line

Ooitech delivers a complete 30MW BIPV solar panel production line to the Philippines, enabling local manufacturing of building-integrated photovoltaic

![Tabber Stringer Machine Manufacturer: How to Vet One](https://cdn.ooitech.com/runtime/image/w320_h200_fitblur_v2_2026061020186378.webp)

- [** ooitech](./how-a-tabber-and-stringer-works-and-how-to-choose-one-in-2026.html)
- [** 1464](./how-a-tabber-and-stringer-works-and-how-to-choose-one-in-2026.html)

### Tabber Stringer Machine Manufacturer: How to Vet One

How to tell a real tabber stringer machine manufacturer from a trading company, what an acceptance test must prove, and quotation red flags.

![Solar Panel Production Line in Egypt: 4 Projects](https://cdn.ooitech.com/runtime/image/w320_h200_fitblur_v2_2026041439202098.webp)

- [** ooitech](./egypt-first-full-automatic-solar-panel-production-line-from-china-ooitech-success-story.html)
- [** 1444](./egypt-first-full-automatic-solar-panel-production-line-from-china-ooitech-success-story.html)

### Solar Panel Production Line in Egypt: 4 Projects

Ooitech has delivered four solar panel production lines in Egypt since 2014. What Egyptian buyers ask, and how much space each capacity needs.

![American Green Energy Company Purchases Ooitech](https://cdn.ooitech.com/runtime/image/w320_h200_fitblur_v2_2026032780265832.webp)

- [** ooitech](./american-green-energy-company-purchases-ooitech-automatic-ribbon-cutting-machine-in-2014.html)
- [** 1360](./american-green-energy-company-purchases-ooitech-automatic-ribbon-cutting-machine-in-2014.html)

### American Green Energy Company Purchases Ooitech

In 2014, a green energy company from the United States purchased the Ooitech automatic ribbon cutting and bending machine for their solar panel production

![Triple-Junction GaAs Solar Cell — Structure and Gains](https://cdn.ooitech.com/runtime/image/w320_h200_fitblur_v2_0faa5b779818653a93da98562535c954.png)

- [** ooitech](./triple-junction-gaas-solar-cells-a-detailed-look-at-the-mainstream-space-photovoltaic-structure.html)
- [** 1327](./triple-junction-gaas-solar-cells-a-detailed-look-at-the-mainstream-space-photovoltaic-structure.html)

### Triple-Junction GaAs Solar Cell — Structure and Gains

Triple-junction GaAs solar cell: how three stacked junctions split the spectrum, why efficiency passes 30%, and where cost limits concentrator use.

![SUNUSA Orders 5MW Semi-Automatic Solar Panel Production](https://cdn.ooitech.com/runtime/image/w320_h200_fitblur_v2_2026041512063502.webp)

- [** ooitech](./sunusa-orders-5mw-semi-automatic-solar-panel-production-line-from-ooitech-in-2014.html)
- [** 1219](./sunusa-orders-5mw-semi-automatic-solar-panel-production-line-from-ooitech-in-2014.html)

### SUNUSA Orders 5MW Semi-Automatic Solar Panel Production

In 2014, Indian solar manufacturer SUNUSA purchased a 5MW semi-automatic solar panel production line from Ooitech to expand domestic solar module