1. Overview
If a PCU Card is installed inside the actuator, follow this procedure for safe replacement and initial setup.
2. Replacement Steps
Step 1: Power Off
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Turn off the power supply to the actuator before replacing the PCU Card.
Step 2: Install the New PCU Card
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Install the replacement PCU Card inside the actuator.
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Configure DIP Switches and Dead Band/Time settings:
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These must be set identically to the original card.
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Step 3: Perform Auto Setting
3.1 Pre-Check
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Ensure the actuator and valve are correctly assembled.
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Confirm power and Input/Output signal connectors are properly connected.
3.2 Auto Setting Process
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Press the ASCAN button on the PCU Card once.
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The blue LED will blink, indicating that Auto Setting is in progress.
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The valve will automatically open and then close.
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When Auto Setting is complete, the blue LED remains ON.
3. LED Behavior During Auto Setting
| LED Color | Description |
|---|---|
| 🔵 Blue | Blinks during Auto Setting, remains ON when complete |
| 🟢 Green | Blinks while valve is closing, remains ON when fully closed |
| 🔴 Red | Blinks while valve is opening, remains ON when fully open |
📌 If the valve is already fully closed, the closing action will be skipped.
4. Canceling Auto Setting
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Auto Setting will be canceled immediately if any button (ZERO / SPAN / ASCAN) is pressed during the Auto Setting process.
5. Summary of Key Actions
| Step | Action |
|---|---|
| 1 | Turn OFF power to the actuator |
| 2 | Replace PCU Card and match DIP switch & dead band/time settings |
| 3 | Ensure proper assembly and connector status |
| 4 | Press ASCAN once to start Auto Setting |
| 5 | Observe LED behaviors as valve cycles |
| 6 | Auto Setting completes when Blue LED stays ON |
| 7 | Press any button to cancel Auto Setting, if necessary |
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