Troubleshooting Steps for Relay Connection and Production Data Issue

Issue:
The device is only sending health messages and not receiving production data.

Objective:
Verify the relay connection and ensure the device is correctly receiving production data from the machine.

Step 1: Identify the Relay

A relay is an electromechanical switch used to control electrical signals. It typically has:

• A coil (input side) that receives electrical signals.
• Switching contacts (output side) that open/close based on the coil's activation.
• Terminals labeled as COM (Common), NO (Normally Open), NC (Normally Closed).

Step 2: Verify Relay Connection

1. Inspect the Relay Wiring:
   • Ensure the relay is properly wired to the device and machine output.
   • Check for any loose or disconnected wires.
2. Check Relay Activation:
   • Observe whether the relay clicks when the machine runs production.
   • If the relay does not click, it may not be receiving a trigger signal from the machine.

Step 3: Measure Voltage with a Multimeter

1. Set the multimeter to DC voltage mode.
2. Measure the voltage between COM and IO-PIN-3 on the device.
   • Important: If the device does not have an IO-PIN-3, use another valid IO pin.
3. Expected voltage reading: Between 0V and 3.2V.
   • If the reading is outside this range, the relay may not be functioning correctly.

Step 4: Test with a Different IO Pin

1. If the relay appears to be working but the device is still not receiving production data:
   • Ask the customer to switch from IO-PIN-3 to IO-PIN-4.
   • Check if production data starts appearing in the system.

Step 5: Confirm Relay Operation

1. If available, test the relay separately by applying the correct voltage to the coil and checking for continuity between NO and COM terminals.
2. If the relay is not switching as expected, it may need to be replaced.

Next Steps

• If the issue persists after verifying wiring, voltage, and IO pin changes, further investigation into the machine’s output signals may be required.
• The customer may need to consult an electrician or technician for relay replacement if faulty.