TSC 800 TRANSFER SWITCH CONTROLLER
PM 049 REV 10 08/09/25 Thomson Technology
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The system operation sub-menus are organized as follows:
Utility Normal
Failed
Return Delay
Gen ATS In OFF
In Auto
Starting
Failed
Running
Normal
Cooling
Auto Offload Test
Manual Offload Test
Auto Onload Test
Manual Onload Test
Commit To Transfer
LCD DISPLAY
Util Normal
Gen Onload Test
Displays utility supply status conditions. There are three status conditions:
Normal Load is on the utility supply and the utility’s voltage and
frequency is normal.
Failed Utility supply voltage and/or frequency are outside the
nominal programmed limits (e.g. failed condition).
Return Delay Load is on the generator supply and the utility supply is
ready to transfer. This is a temporary condition due to either
a test mode being selected or during a utility return time
delay.
Displays generator supply status conditions. There are twelve status conditions as
follows:
ATS In Off The ATS Mode has been set to OFF via the Internal or
External switch input. The Controller will display the
message “Controller Out of Service”.
In Auto The ATS Mode via the Internal ATS Mode Menu has been
set to Auto.