Use the OWEN PLC63 with the A36 application as a replacement candidate for discontinued Danfoss ECL200 and ECL300 heating-station controllers. The evidence maps A36 to specific ECL application cards, states compatibility with Danfoss sensors and actuators, and identifies the controller image-loading and visualization paths. It does not provide wiring diagrams, I/O ratings, register maps, or A36 source code, so verify those items before commissioning.
Replacement Scope and Application Mapping
The A36 application controls heating and domestic hot water. Its parameter-setting approach is described as analogous to ECL operation and does not require a service card.
| Existing controller | Existing application card | Replacement candidate |
|---|---|---|
| Danfoss ECL300 | C66 | OWEN PLC63 with A36 |
| Danfoss ECL200 | P30 | OWEN PLC63 with A36 |
| Danfoss ECL200 | P16 | OWEN PLC63 with A36 |
The evidence states that the ECL200 and ECL300 are discontinued. It also states that the PLC63/A36 combination is compatible with Danfoss sensors and actuators, but it does not identify individual sensor types, signal ranges, actuator voltages, or terminal assignments.
Controller Image and Engineering Components
Load the A36 program image with the OWEN QRTPM133M copying utility. The available evidence mentions an A36 image and a configuration for MasterOPS Universal Modbus Server Demo32, but it does not establish that source code is included; one report explicitly notes the absence of source files.
Migration and Commissioning Procedure
- Confirm that the existing installation is an ECL300 with C66 or an ECL200 with P30 or P16. Treat other controller-and-card combinations as unverified.
- Document every connected sensor, actuator, power circuit, and control function. Compare their electrical characteristics and terminal requirements with the selected PLC63 hardware because the evidence supplies no wiring or I/O specifications.
- Transfer the heating and domestic-hot-water settings from the existing control strategy. Use the ECL-like parameter workflow, but verify each value rather than assuming direct parameter-number equivalence.
- Commission heating and domestic-hot-water operation separately. Confirm sensor readings, actuator direction, temperature adjustment, and the resulting controlled temperature before placing both functions in service.
Visualization and Communications
A demonstrated visualization arrangement used the free demo versions of MasterSCADA and MasterOPS Server. Communication to the controller passed through Ethernet-to-RS485 converters, and a configuration was prepared for MasterOPS Universal Modbus Server Demo32. The evidence does not provide serial settings, Ethernet addressing, Modbus register addresses, scaling, or polling intervals; obtain or derive these from the actual A36 configuration before integration.
Verify communications by confirming that displayed values track controller values and that permitted operator changes reach the intended heating or hot-water parameter. Do not infer undocumented write access or register assignments.
FAQ
Can OWEN PLC63 replace a Danfoss ECL300 with a C66 card?
Yes, the evidence identifies PLC63 with the A36 application as a replacement candidate for ECL300 with C66. Verify field-device electrical compatibility and wiring before commissioning because those details are not supplied.
Which ECL200 application cards are covered by PLC63 A36?
The documented mappings are ECL200 with P30 and ECL200 with P16. No other ECL200 card is confirmed by the available evidence.
How is the A36 program loaded into PLC63?
The evidence identifies an image-loading workflow but does not confirm that editable A36 source code is available.