10 Volts low

What does 1 mean?

The control card voltage on terminal 50 is less than 10 V, indicating an overload on the 10 V supply. This can be caused by a short circuit in a connected potentiometer or incorrect wiring of the potentiometer.

• Short circuit in a connected potentiometer (e.g., between terminal 50 and terminal 53).
• External device connected to the 10V supply (terminal 50) is drawing excessive current, causing an overload.
• Damaged or degraded potentiometer connected to terminal 50, creating a resistive short or low impedance path.
• Multiple external devices drawing current from the 10V supply (terminal 50) exceeding the drive's specified current limit.
• Internal control card component failure (e.g., voltage regulator U101) responsible for the 10V output.

Click steps to track your progress.

1. 1

   Disconnect all external wiring from terminal 50 (10V supply) and terminal 53 (0V supply) on the control card.

2. 2

   Measure the voltage between terminal 50 and terminal 53 on the control card; it should read approximately 10VDC.

3. 3

   If the voltage is correct, reconnect external devices one by one, monitoring the voltage between terminal 50 and 53 after each connection.

4. 4

   If a potentiometer is connected, measure its resistance across the end terminals (e.g., 50-53) and its wiper (e.g., 50-54) for shorts.

5. 5

   Check the total current draw from the 10V supply (terminal 50) when all external devices are connected, ensuring it's below the drive's specified limit (e.g., 100mA).