Why is there no time delay when there should be on THOMSON Controller?
If there is no time delay when there should be one in your THOMSON Controller, it might be due to an incorrect TSC 900-time delay setting. Verify the TSC 900 timer setting.
What to do if power is not available at the load terminals of THOMSON TSC 900?
If power isn't available at the load terminals of your THOMSON Controller, even though the power switching device seems closed to a live source: * The utility or generator power switching device may have tripped open due to an over current condition. Reset the power switching device by manually operating the ATS mechanism to the other source, then back to the source which was tripped. * The mechanism might have failed to operate the power switching device toggle far enough to close the power switching unit.
Why has THOMSON TSC 900 Controller transfer switch motor overheated?
If the motor has overheated and the internal thermal protector has opened after a transfer on your THOMSON Controller, it could be due to limit switch failure or improper adjustment.
Why does THOMSON TSC 900 Controller engine start and stop every 3-4 minutes?
If the engine of your THOMSON Controller starts and stops every few minutes, the TSC 900 may have been selected for OFF mode and all control power has been removed to the TSC 900 controller. Maintain control power to TSC 900 at all times or change local engine control panel from Auto to OFF mode to prevent starting in Auto mode.
What to do if THOMSON TSC 900 Controller will not re-transfer to utility source upon restoration?
If your THOMSON Controller won't re-transfer to the utility source after power is restored, here's what to check: * The Utility Return Time delay in TSC 900 might not have expired yet. Verify the TSC 900-time delay setting. * A Load Test or Exercise Test mode could be active. Check the TSC 900 GHC Home Page or Scheduler page. * The utility supply might not be operating at the correct voltage or frequency levels. Compare the actual levels to the TSC 900 settings. * The TSC 900 might have incorrect utility voltage or frequency settings. Re-program the TSC 900 with the correct settings. * The Utility Phase Rotation might not match the Generator supply. Check the voltage phase rotation on the TSC 900 GHC Utility & Generator Voltage Pages. * The electrical interlock contact from th...
What to do if THOMSON TSC 900 will not transfer to generator source upon failure of utility source?
If your THOMSON Controller fails to transfer to the generator source when the utility source fails, consider the following: * For Service Entrance Rated ATS, the Utility Voltage Disconnect switch might be in the “Off” position. Switch it to “On”. * The warm-up time delay function may not have timed out yet. Verify the TSC 900 timer setting. * The generator set output circuit breaker might be open. Close the generator set output circuit breaker. * The generator supply might not be operating at the correct voltage or frequency levels. Verify the generator's voltage and frequency levels against the TSC 900 settings. * The TSC 900 might have incorrect generator voltage or frequency settings. Re-program the TSC 900 with the correct settings. * The generator phase rotation might not...
Why does THOMSON TSC 900 transfer to generator source without a power failure in the utility source?
If your THOMSON Controller transfers to the generator source even without a utility power failure, here's what to investigate: * A Load Test mode might be activated. Check the TSC 900 GHC Home Page status indicators. * An Exercise Test mode might be running. Check the TSC 900 GHC Scheduler page. * The utility supply might not be operating at the correct voltage or frequency levels. Verify the utility source's nominal levels and compare them to the TSC 900 settings. * The TSC 900 might have incorrect utility voltage or frequency settings for the ATS. Re-program the TSC 900 with the correct settings. * The utility power switching device may have tripped open due to an over current condition, activating the TSC 900 “Transfer Fail” alarm. Determine the cause of the alarm and rectify...
Why does THOMSON Controller generator not start or stop when it should?
If the generator of your THOMSON Controller isn't starting or stopping as expected, check these potential causes: * The remote engine control panel might not be set to automatic mode. Ensure it's set for automatic operation. * The engine start contact might be wired incorrectly from the ATS to the engine control panel. Verify the wiring. * The incorrect TSC 900 engine start contact might be in use. For single engine applications, use Engine Start Signal #2 contact on TSC 900 lower terminal block (J10b). * The TSC 900 engine start contact terminal block (j10b) might be unplugged. Verify it's fully inserted into the controller and connected to the correct position. * The TSC 900 SCU Engine Start relay/contact could be defective. Verify the Engine start signal LED diagnostic light ...
How to troubleshoot if THOMSON TSC 900 Controller GHC Display is not showing any system information?
If the GHC Display of your THOMSON Controller isn't showing system information, try the following: * The GHC screen might be in sleep mode. Touch the screen to reactivate the LCD display. * The GHC USB cable might be unplugged at either end. Verify the USB cable is fully inserted into both the GHC and SCU devices. * The GHC Display might be defective. Temporarily unplug the GHC USB cable for 5 seconds, then re-insert it to reboot the GHC comptroller. Verify the TSC 900 GHC has an SD Memory Card fully inserted into the socket. * The TSC 900 SCU Control board might not be powered. Verify the SCU is powered from either a 120VAC Utility supply, a 120VAC Generator supply, or a 24VDC aux supply (if fitted). * The SCU USB Jumper (J24 on SCU PCB) might be in the incorrect position. Veri...
Describes the main operating modes of the TSC 900 controller.
Explains the sequences for open and closed transition transfers and dual source operations.
Procedure for performing an On Load Test to simulate utility power failure.
Procedure for performing an Off Load Test to run the generator without load.
Instructions for performing a TIMED TEST, specifying test type and duration.
Details the operational features and behaviors of Open and Closed Transition Transfers.
Describes ATS operation with three types of Dual Source configurations.
Procedure for resetting a Transfer Fail alarm and determining its cause.
How the TSC 900 detects and alerts abnormal source conditions.
Details user access levels and required login actions for security.
Step-by-step guide for logging into the TSC 900 controller.
Details how to map programmable inputs to parameters based on ATS configuration.
Explains how programmable outputs can be mapped to parameters for ATS configuration.
Enables Load Shed control logic based on load frequency threshold set points.
Triggers an alarm if sources fail to auto-synchronize after the timer expires.
Allows selection of closed transition transfer operation for specific ATS models.
Permits operation in Extended Parallel mode when sources are available.
General| Brand | THOMSON |
|---|---|
| Model | TSC 900 |
| Category | Controller |
| Language | English |
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