Robotics engineering services · AMR · AGV · Cobot · Netherlands
Sisu Logic is a robotics engineering services company. We develop the robot software, fleet management software and safety software for autonomous mobile robots (AMRs), automated guided vehicles (AGVs) and collaborative robots (cobots). We select the hardware, design the electrical systems and support testing, commissioning and acceptance until your robot is certified and running at your customer's site.
Engineering experience from projects in
Robot types
The three abbreviations are used loosely in the industry. This is what we mean by them, how they differ, and why the difference matters for the software, the safety case and the electrical design.
Drives on fixed routes defined by infrastructure in the floor: magnetic tape, a magnet grid, QR codes, wires or reflectors. It stops when something blocks the path. Predictable and high-throughput, but a layout change means changing the floor.
Navigates freely using a map and its own sensors, plans its own path and drives around obstacles. No floor infrastructure, quick to redeploy, but far more software and a safety case that has to cover speed-dependent behaviour.
A robot arm designed to work next to people without a fence. Instead of guarding, it relies on power and force limiting, speed and separation monitoring and a carefully designed application. Mounted on an AMR it becomes a mobile manipulator.
For all three Sisu Logic provides the same six services: robot and fleet software, safety software and certification, hardware selection, electrical design, testing and commissioning, and project and system engineering.
The problem
Most robotics projects do not fail on navigation. They stall in the gaps between software, safety, electrical engineering and the customer's floor.
The safety case starts after the software works, and the notified body finds a Category 3 requirement the architecture cannot meet. Months are lost redesigning.
Software, PLC, electrical and mechanics come from different parties. The interfaces between them are exactly where the factory acceptance test fails.
Wi-Fi roaming, floor transitions, doors, lifts and people. What passed in the workshop needs engineers who have commissioned robots on real floors.
Sisu Logic closes these gaps by covering software, safety, electrical engineering and commissioning in one team, so they are designed out early instead of discovered at the customer.
Services
Six engineering services that cover the full life of a robotics project. Take one, or let us carry the project from the first requirement to the signed site acceptance.
All the modules an AMR, AGV or cobot needs, plus the fleet manager above them.
The safety concept, the safety software and the route through CE, UKCA or ANSI certification.
Independent advice on the components your robot is built from, matched to payload, speed, environment and budget.
Schematics, cabinet layout and wiring for robots and robot cells, designed for certification from the first drawing.
Structured acceptance from the workshop to the customer's floor, with protocols that stand up to an auditor.
Implementation support at the customer: requirements, interfaces and integration until the system is accepted and in use.
Software
We build complete robot software stacks or individual modules that drop into yours. The same engineering standard applies to both: C++ and Python, ROS 2 or native, unit-tested, in your CI, documented for the engineers who come after us.
From magnet-grid AGVs to free-navigating AMRs on new hardware.
Application software for cobot cells that work next to people.
The system that turns a set of robots into a working operation.
Safety & certification
A robot that is not certified does not ship. We write the safety concept before the first line of code, implement it in the safety PLC and the control software, and validate it with test protocols witnessed by the notified body. The result is a technical file your company owns and can maintain.
Hardware & electrical
Software is only as good as the hardware under it. We help you choose components that fit the application and the certification route, then design the electrical system around them.
We have no resale margin on anything. Recommendations follow the payload, speed, duty cycle, environment and the safety functions the robot has to perform.
Electrical design for mobile robots and cobot cells, from the single-line diagram to the wiring list, with the safety circuits that the technical file will ask for.
Process
A robotics project is accepted in stages, and each stage has a document and a test behind it. This is how we run a project end to end. Join at any phase; the deliverables stay the same.
Site survey, use cases, throughput, layout and interfaces. System architecture and the certification route agreed with you and your customer.
→ System requirements · architectureComponents chosen against the requirements and the safety functions. Suppliers, lead times and costs on the table.
→ Bill of materials · trade-off reportSchematics, cabinet and wiring design with the safety circuits included from the start.
→ Schematics · cable schedulesRobot modules, fleet manager and cell software built in short iterations, tested on hardware every week.
→ Tested releases · design docsCabinet and robot wiring verified against the schematics: insulation, earthing, E-stop chain, I/O checks.
→ EAT protocol · signedFunctional and safety tests in the workshop with your customer present. Performance, failure modes and safety functions demonstrated.
→ FAT protocol · punch listInstallation support, mapping, field configuration, integration with WMS, doors, lifts and stations. Operators trained on the real system.
→ Commissioned system · trainingPerformance runs under production conditions, safety validation at the site, technical file completed. Signed off, handed over.
→ SAT protocol · technical fileExample projects
A selection that shows the range of engineering we provide. Clients are described by sector; names and full detail are shared only with their consent and under NDA.
Safety concept to ISO 3691-4 and ISO 13849-1, safety PLC software, on-robot safety dashboard and a ROS 1 to ROS 2 migration. Safety tests witnessed on site by a German notified body.
Navigation software for hybrid magnet-grid and natural navigation, protective-field sets generated from the vehicle model with automatic validation, 24/7 logging and log replay.
ROS 2 navigation stack, safety cases for the safety PLC, the interface between navigation and the PLC that owns kinematics and safety, and VDA 5050 fleet communication.
Four vehicle types on one control architecture: diagonal drive for the marriage line, a 1.5 m/s differential mini-mover, a six-axis handling unit and a pallet carrier.
From requirements to site acceptance, with Sisu Logic responsible for software, safety and electrical engineering. Fixed milestones and one point of contact.
Senior robotics, safety or electrical engineering capacity inside your repositories and tools, on site or remote, for as long as the project needs it.
A review of your safety concept, software architecture or electrical design before the auditor or your customer reviews it.
Industries
Mobile robots and cobots behave differently on a car body line, in a cold store and in a greenhouse. We have engineered systems for each and design for the floor the robot will actually run on.
Pallet and tote transport, truck loading, goods-to-person, mixed fleets.
Line-side supply, assembly AGVs, machine tending and palletising cobots.
Greenhouse underride vehicles, trolley transport, harvest logistics.
Trackless ride vehicles and show systems with zero tolerance for a stopped show.
Extra engineering capacity for OEMs and system integrators under deadline.
About Sisu Logic
Sisu Logic is a robotics engineering company based in Zwolle, the Netherlands. We provide engineering services to robot manufacturers, system integrators and end users. We do not build or sell robots; we supply the software, safety, electrical and commissioning engineering that gets your robot tested, certified, documented and accepted at your customer.
The company is led by Siar Sultanali, an embedded and robotics engineer with more than twelve years in AGV, AMR and safety-critical systems, including navigation software for AGVs at German premium car manufacturers, trackless ride vehicles for major theme parks, CE and ANSI certification of truck-loading AMRs with a notified body, and ROS 2 autonomy for greenhouse robots. For larger scopes we bring in trusted specialists in mechanics, vision and PLC engineering and run the project as one team.
References from clients and colleagues are available on request.
FAQ
Short answers to the questions most new clients ask in the first call.
Both. We join existing ROS 1, ROS 2 and native C++ code bases regularly, and most engagements start with a code and architecture review. We build a new stack only where the existing one cannot meet the requirements.
We write the risk assessment, safety concept, safety software and validation protocols, and we run the witnessed tests with the notified body. The legal manufacturer signs the declaration of conformity; we prepare the complete technical file behind it.
We are vendor-independent. Cobots: Universal Robots, Fanuc CRX, KUKA, ABB, Doosan. Safety PLCs: SICK Flexi Soft, Siemens S7 F-series, Pilz. Navigation: in-house stacks, Nav2, BlueBotics ANT and others on request.
Not in-house. For mechanical design we work with trusted partners and own the interfaces between mechanics, electrical and software, or we work directly with your mechanical team.
Everything we produce for you, code, schematics and documents, belongs to you. We sign your NDA before the first technical call and work in your repositories and tools where required.
We are based in Zwolle, the Netherlands. Commissioning, FAT and SAT happen on site across the Netherlands, Belgium and Germany, and further afield by arrangement. Development work is done remotely or at your location.
Contact
Send a few lines about what you are building, where it will run and when it has to be accepted. You will hear back within two working days, usually with questions and a proposal for a scoping call.