Applications / Production and field
EVSE End-of-Line Testing for Production
Test each charging station before it leaves production. Run a defined sequence, record the result against its serial number and identify units that need rework.
Our Easy Chester EOL and Easy Chester EOL HPC test systems bring this repeatable testing workflow to your production line.
The production outcome
A production test must end in a controlled decision.
End-of-line testing is not an exploratory laboratory session. Engineering defines the released acceptance contract. Production applies it consistently to the identified charger and records the result.
Release
All mandatory checks were executed with the released profile and the unit met the approved acceptance criteria.
Rework
A known and repairable deviation is assigned to a defined rework route before the same relevant checks are repeated.
Reject
The unit cannot be released because a mandatory criterion failed or the required test boundary could not be established.
Engineering review
An unexpected pattern, test-system condition or new product behaviour requires controlled analysis outside the standard line flow.
Factory acceptance scope
Define what every manufactured EVSE must prove before selecting the tester.
The production plan should separate mandatory series checks from type testing, development investigations and adjacent quality processes. The exact scope follows the charger family, market, interface and released acceptance plan.
Product identity
Serial number, production order, variant, options, firmware and other approved identity fields.
Charging interface
Connector and locking checks, Control Pilot (CP), Proximity Pilot (PP), PLC and CAN interfaces, and auxiliary signals.
Communication
Released charging protocol, expected sequence, configurable parameters, timing and selected negative reactions.
Electrical safety reactions
Selected charger-side protective behaviour, interlocks, isolation or residual-voltage checks where included in the production contract.
Functional charging
Connection states, enable conditions, contactor sequence, voltage and current response, start and controlled termination.
Power path
Defined source or load points, duration, ramps and limits sized to the production decision rather than a headline power value.
Metering option
Reference comparison at defined operating points when production also owns a metrology-oriented verification step.
Factory integration
Barcode, PLC, MES, QMS, database, report, operator guidance, rework routing and approved interfaces.
Controlled production cycle
One approved profile. One controlled cycle. One attributable decision.
The line should not require an engineer to reconstruct a charging environment for every unit. A released profile carries the approved test sequence, parameters and evaluation into production.
- 1
Identify the unit
Read or enter the serial number, charger variant, firmware, order and other required production context.
- 2
Load the released profile
Select the approved test sequence and parameter set for the identified product configuration.
- 3
Establish the protected test boundary
Confirm connections, interlocks, external equipment and safe initial conditions before power is enabled.
- 4
Execute the charging checks
Run the released communication, function, parameter, safety-reaction and optional power or metrology steps.
- 5
Evaluate automatically
Apply the approved result logic, preserve measured values and make every deviation visible.
- 6
Release, rework, reject or escalate
Store the decision and evidence against the unit, then route the charger through the controlled production process.
Unit-level traceability
A verdict is useful only when it belongs to the charger that was tested.
The evidence package must preserve what was tested, with which approved profile, under which conditions and why the unit was released or routed elsewhere.
Factory architecture
Fit charging-specific test logic into the line, not beside it.
The EOL system becomes the controlled layer between product identification, the physical EVSE (electric vehicle supply equipment, or charging station), external power or measurement equipment and the factory result. The exact architecture follows the customer's automation and data ownership.
Define and maintain the released test requirements
Approve profiles, limits, configuration changes and diagnostic escalation.
Execute the controlled sequence
Identify the charging station, prepare the test setup and run the test sequence. Use the result to determine release, rework or further review.
Own acceptance and retention
Define release evidence, audit needs, rework rules and record retention.
Connect systems without hiding responsibility
Integrate barcode, PLC, MES, QMS, databases and approved data interfaces.
System path
Select the physical architecture after the production decision is clear.
Define the workflow and evidence requirement first, then compare the concrete hardware, ratings, interfaces, options and released functions on the product pages.
Easy Chester EOL
Repeatable EVSE function, communication and parameter verification with production integration and unit-level traceability.
Open productEasy Chester EOL HPC
Coordinate high-power source or load equipment, switching, cooling, protection, automation and evidence as one test cell.
Open productEOL plus Calibration
Add real energy transfer, a suitable AC or DC reference meter and a controlled metrology workflow to the same unit record.
Open applicationEVCA Flex
Use when the production or transfer process requires open engineering depth, extensive fault simulation, power integration or deeper protocol analysis.
Open productcomframe and APIs
Coordinate supported test equipment, customer-owned devices, automated sequences, evaluation, reporting and data handover.
Open softwareEasy Chester platform
Separate factory acceptance, high-power production, field service and mobile calibration before selecting the product variant.
Compare systemsConfiguration inputs
Define the product, cycle, integration and evidence before requesting a system.
A useful specification describes the manufacturing decision. Hardware and software follow the actual DUT, production rate and release process.
DUT and variants
Complete EVSE or module, connector families, charging technologies, market versions, options and firmware.
Acceptance criteria
Mandatory communication, function, parameters, safety reactions, power points and pass/fail rules.
Cycle and throughput
Target takt time, repetitions, stabilization, peak and continuous duty, shift model and maintenance window.
Power architecture
Independent voltage, current, power, duration, regeneration, cooling, switching and facility constraints.
Automation
Operator guidance, remote control, line PLC, robotics, barcode, sequence ownership and safe-state handling.
Data interfaces
MES, QMS, database, file exchange, APIs, result acknowledgement and offline behaviour.
Evidence and retention
Required fields, raw data, step results, reports, signatures, audit trail, storage location and retention period.
Optional metrology
Reference meter, range, uncertainty, traceability, procedure, operating points and responsible legal or quality process.
Published implementation examples
Standardized execution can still integrate customer-specific equipment.
The production contract stays controlled even when the hardware architecture differs between factories or charger families.
Customer-owned power electronics inside one EOL workflow
A customer combined Easy Chester EOL with internally developed power electronics for a specific production setup. Standard Easy Chester operation is designed to work without a laptop; production interfaces are specified separately.
Read the customer projectConsistent evidence from AC development to production
A portable EVCA Flex unit supported development while a smaller rack system served the production site. Shared test and measurement data helped maintain consistency between the engineering and factory environments.
Read the system storyFrequently asked questions
EVSE end-of-line testing
What is EVSE end-of-line testing?
EVSE end-of-line testing verifies a completed charging station or a defined production module against released factory acceptance criteria before it is released. The test keeps unit identity, approved configuration, executed checks, measured evidence and the final decision connected.
How does end-of-line testing differ from development validation?
Development validation explores behaviour, limits, robustness and faults while the product is still changing. End-of-line testing applies a released and controlled acceptance plan repeatedly to manufactured units. It is optimized for consistency, cycle time, traceability and production decisions.
What should be checked on every manufactured charging station?
The exact scope is product-specific. Typical checks can include unit identity, charging-interface behaviour, low-level signals, high-level communication, functional charging, selected electrical-safety reactions, configured parameters and production evidence. Mechanical, visual and regulatory checks remain separate unless explicitly integrated.
How is the test result linked to the charger serial number?
The production workflow reads or receives the approved unit identity, loads the matching released profile and stores the test configuration, measurements, step verdicts and overall result against that identity. The concrete barcode, database, MES or QMS interface is project-specific.
Can one test station handle several EVSE variants?
Yes, when the hardware boundary supports the required interfaces and each product variant has a released test profile. Variant selection should be driven by controlled production identity or an approved operator workflow, not by manually rebuilding the test sequence for each unit.
Can customer-owned power electronics or factory equipment be integrated?
Yes, within a defined integration scope. comframe and released interfaces can coordinate supported external sources, loads, meters, line controllers and databases. The May 2025 customer project integrated customer-owned power electronics through the Generic Source API.
Production test planning
Turn approved criteria into a repeatable line workflow.
Define unit identity, variants, cycle time, interfaces and release evidence.