Eaton Cutler-Hammer ATC-300 - Appendix A: Display Messages for Status and Timers; Display Message Descriptions

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Instruction Booklet
Effective: April 2006 Page 25
ATC-300 Automatic
Transfer Switch Controller
Appendix A: Display Message
for Status and Timers
Display Message
TDEC Countdown cool-off timing before the generator contacts are opened.
TDES Countdown timing before the generator contacts are closed.
TDNE Countdown timing before Source 1 is disconnected before transferring to Source 2. Timing begins when Source 2 is
available.
TDN Countdown timing with both sources disconnected from the load.
TDEN Countdown timing before Source 2 is disconnected before transferring to Source 1. Timing begins when Source 1
becomes available.
TRANSFER Waiting for the switch to make the transfer from the neutral position to the intended source.
ATS NOT IN AUTOMATIC Control input for monitor mode is closed.
LOCK-OUT OVERCURRENT TRIP A trip condition has been detected by either breaker, and the system is locked-out from further transfers.
ENGINE RUN The engine run test timer is counting down before the test is completed. Pressing the Engine Test pushbutton will abort
this timer and the test.
START TEST? To initiate an engine test sequence, press the Engine Test pushbutton again, or press Increase and Decrease pushbut-
tons simultaneously to clear.
WAIT FOR S2 Waiting for the Source 2 source voltage and frequency to become available.
TD PRE-TRAN Countdown timer while waiting for a pre-transfer acknowledge input.
SYNC TIME Countdown timing in minutes while waiting for sources to synchronize during an in phase transition.
SOURCE 1 DEVICE Indicates that the Source 1 device (i.e. circuit breaker, contactor) failed to open or close
SOURCE 2 DEVICE Indicates that the Source 2 device (i.e. circuit breaker, contactor) failed to open or close.
TDEF Countdown timing before declaring Source 2 unavailable (accounts for momentary generator fluctuations).
TD UNBAL Countdown timer before declaring a source unavailable due to a voltage unbalance condition.
TEST ABORTED Indicates that an engine test or plant exercise was aborted after three unsuccessful attempts. Source 2 did not remain
available while TDNE was timing.
GO TO SOURCE 2 Indicates that the load is connected to Source 2 because the Go To Source 2 control input is in the “unconnected”
state.
FAILSAFE Indicates that the load was connected to Source 2 but Source 2 became unavailable so the load transferred back to
Source 1.
SETPOINTS ERROR Memory problem with the setpoints. Contact the factory.
OPTIONS ERROR Memory problem with the factory options. Contact the factory.
PROGRAMMING SETPOINTS Setpoints are being saved in memory.
WAITING FOR NEUTRAL Waiting for the neutral position to be reached by the switch.
WAITING FOR S1 TO OPEN Waiting for the Source 1 device (i.e. circuit breaker, contactor) to open.
WAITING FOR S2 TO OPEN Waiting for the Source 2 device (i.e. circuit breaker, contactor) to open.
WAITING FOR S1 TO CLOSE Waiting for the Source 1 device (i.e. circuit breaker, contactor) to close.
WAITING FOR S2 TO CLOSE Waiting for the Source 2 device (i.e. circuit breaker, contactor) to close.