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6 TROUBLESHOOTING
Follow the steps given below based on your issue with the VoltPAQ-X2 and -X4.
Amplifier does not power up.
• Make sure the power cable is firmly connected to the power connector on the back of the VoltPAQ-X2 and -X4.
• Verify that the fuse is not burnt. If the fuse is burnt refer to Section 4.
Load not being driven.
• If the Emergency stop switch (optionally purchased through Quanser) is connected to the amplifier, make sure
the red button is in the upper position to enable the amplifier. The amplifier cannot be enabled when the button
is in the lower position. Twist the button to ensure it is in the enabled position.
• Verify that the fuses are not burnt.
• Make sure, for the particular channel you are using on the amplifier, that the connections have been made
correctly, i.e., the Amplifier Command socket on the amplifier is connected to the analog output channel on
your data acquisition device and the To Load socket on the amplifier is connected to the load. If you are using
a Quanser system, refer to the User Manual for that Quanser product for connection details.
Amplifier Enabled LED is red.
• If the Emergency stop switch (optionally purchased through Quanser) is connected to the amplifier, make sure
the red button is in the upper position to enable the amplifier. The amplifier cannot be enabled when the button
is in the lower position. Twist the button to ensure it is in the enabled position.
• Verify that the fuses are not burnt.
• The amplifier might be in thermal shutdown. Power down the amplifier and let it rest for 5 minutes. Verify all
the connections of the experiment and ensure that the load is not damaged.
No analog readings from the amplifier.
• Ensure the 5-pin mini-DIN analog cable is firmly connected from the amplifier socket (e.g., S1&S2 connector)
to the sensor on your device (e.g., tachometer).
• Confirm that the Analog Sensors RCA connector on the amplifier is connected to the correct analog input
channel on the data acquisition (DAQ) device.
• Check that the fuses are not burnt.
• Ensure the analog input channels on your data acquisition (DAQ) device are working. Refer to your DAQ User
Manual for information on how to test it.
• If the sensor is working, then one of the S1&S2, S3, or S4 Analog Sensors connectors may be defective. Try
using a different Analog Sensor input.
VOLTPAQ-X2 AND -X4 User Manual
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