A refurbished PLC can be a sound purchase, but only if it has been properly checked. Here is the kind of test programme you should expect, and the questions worth asking any supplier.
Visual and physical checks
- Housing, connectors and terminals free from damage or corrosion
- Rating plate legible and matching the order number
- No signs of overheating or liquid ingress
Functional checks
- Power up on a bench and confirm a clean start with no fault LEDs.
- Check firmware version and reset to factory state where appropriate.
- Test inputs and outputs under load.
- Verify communication ports.
Questions to ask
- What tests were run on this exact unit?
- What warranty applies, and who covers return shipping?
- Is the firmware cleared of any previous project?
Each item in our PLC catalogue is offered as Refurbished or Used, so you can choose the budget and condition that suit you. Need advice? Talk to us.