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Doc No. 006-0211-00 Rev AD
Page 52 of 62
Note: The ESP gauge will not operate if any phase on the motor circuit becomes shorted
or open. If a ground fault develops in the motor/cable power circuit and current exceeds
37mA then the LCD will display “High Amps”. The Scout-3000 should then be shut down
and the system checked.
Scout-3000 Troubleshooting
Before attempting to troubleshoot there are a few general items you should double
check:
Check that all connections to the fuse block and three phase choke are correct.
Check the fuse on the fuse block.
Check the fuses in the Scout-3000 (line circuit breaker and gauge signal fuse).
Check for a short circuit in the motor power circuit.
Make sure you have a dedicated ground wire from the Scout-3000 directly to the
wellhead ground.
If the Scout is still having trouble establishing communications with the tool after
checking the above problems try restoring/rebooting the Scout by going to the SPS
Menu and selecting the Restore option, followed by the Reboot option. If this does not
work, try to manually set the operating parameters. Turn off the Auto Volt and Auto
Analyzer and begin stepping the voltage from 40 V to 80 V to see if that doesn’t solve
the problem.
The SPS is susceptible to faults caused by phase imbalances that can result in AC
voltage at the gauge signal connection point. Phase imbalance voltages can result in
tool communication problems. In addition, if the voltages at the gauge signal
connection is higher than the rated signal fuse, it will result in a blown fuse. If this
situation occurs, disconnect the Scout-3000 from the Surface Package and troubleshoot
the phase imbalance situation before attempting further communications with the tool.
Low Amps, High Amps, DC-DC Bad Errors
If communications are not established with the tool, the SPS “Start” voltage may be
incorrect for your application. Some of the error messages that may be encountered for
this situation are: “Low Amps”, “High Amps” and “DC-DC Bad”. It is normal to see these
errors during start-up but if they continue over a 4 to 5 minute period then there are a
few parameters in the SPS menu that can be changed to overcome them.
1. Connect the Scout-3000 to the ESP gauge and turn on the power.
2. Press the Menu tab shown in Figure 51 to bring up the configuration menu.