1. Model & Parameter Verification
1、Confirm the full model number, revision code and firmware version completely. Do not use abbreviated models. Different suffixes represent different voltage, power and hardware versions, which may cause incompatibility.
2、Verify core parameters including rated voltage, power, current, communication protocol, installation size and I/O points to ensure full compatibility with on-site control systems.
3、For old equipment replacement, refer strictly to the original part marking instead of drawings, because drawing versions may have deviations.
2. Product Condition & Delivery Confirmation
1、Clarify product status: brand new original or used tested stock, as warranty and lead time vary accordingly.
2、Confirm actual lead time for imported parts and reserve sufficient time for on-site maintenance and emergency repair.
3、Request real product photos, serial numbers and label information for verification before shipment.
3. Compatibility & Matching Requirements
1、Check hardware and firmware compatibility with existing PLC, DCS, servo and control systems. New-version hardware may not support old system firmware, and vice versa.
2、Confirm supporting accessories such as terminals, backplanes, communication cables and extension cards. Distinguish standard parts and optional parts.
3、Verify communication protocols (EtherCAT, Modbus, Profibus, etc.) to avoid communication failure after installation.
4. Quality Inspection & Warranty Terms
1、Confirm warranty scope: hardware failure covered; artificial damage, overvoltage and short circuit are excluded.
2、Confirm pre-shipment testing for key components to reduce failure risk.
3、Check appearance damage, oxidation and interface condition after receiving goods. Confirm wiring before power-on to avoid burnout.
5. Application Scenario Reminders
1、These spare parts are mainly for equipment maintenance and replacement, not recommended for new machine mass production due to possible lack of factory recalibration.
2、For harsh working environments (high temperature, humidity, dust, strong electromagnetic interference), confirm the environmental grade of the product before purchasing.
3、Safety-related components such as safety modules and STO servo systems are recommended to use 100% brand-new original parts to meet industrial safety standards.
6. Acceptance Standards
1、Check outer package condition and take photos if any damage occurs during delivery.
2、Verify model, quantity, accessories and labels after receiving goods.
3、Complete basic power-on test as soon as possible and feedback problems immediately.
