Error in Output Circuit

What does Diag 2 Flash 10 mean?

A general error has been detected in the terminal's output circuit, not necessarily specific to a single output. This can include faulty test pulses (from external supply or cross-circuit), excessive current draw or open load conditions (current below 20 mA or above 500 mA), or general output voltage issues like short-circuits. This impacts the safe and reliable operation of the terminal's digital outputs.

• Systematic fault in the test pulse generation or monitoring circuitry affecting multiple output channels of the terminal.
• Common mode voltage transients or electromagnetic interference (EMI) on the field supply lines affecting the entire output stage.
• Overload condition or short circuit present on multiple output channels simultaneously, exceeding the module's total current capacity.
• External supply voltage irregularities (too high, too low, or noisy) impacting the internal power conversion for the output stage.
• Internal power supply failure specific to the output driver section of the terminal module.

Click steps to track your progress.

1. 1

   1. Disconnect all loads from the output channels of the terminal. Reset the module and verify if the "Error in Output Circuit" fault clears.

2. 2

   2. Measure the 24VDC field supply voltage at the terminal input terminals using a multimeter and an oscilloscope to check for stability and absence of excessive noise.

3. 3

   3. Systematically connect loads to each output channel one by one, verifying operation and current draw (with an amp clamp) for each. Identify any specific load causing the fault.

4. 4

   4. Inspect the power distribution wiring to the terminal for proper grounding and shielding, especially if heavy inductive loads are present on the same supply.

5. 5

   5. If the fault persists with no loads connected and stable supply voltage, replace the terminal module, as it indicates a systemic internal failure in the output stage.