IB ATS-1005 For more information visit: www.eaton.com
Instructional Booklet
Effective: March 2010 Page 27
Instructions for Installation, Operation and Maintenance of the
Eaton ATC-600 Automatic Transfer Switch Controller
Appendix A: Status Display Messages
All possible Status Display Messages are shown below. For additional information, refer to paragraph 3.4.1.
Status Display Message Display Message Meaning
TDEC Countdown cool off timing before generator contacts are opened.
TDES Countdown timing before generator contacts are closed.
TDNE Countdown timing before normal breaker is opened for transfer to the emergency source.
TDN Countdown timing with both sources disconnected from the load.
TXFR Waiting for the switch to make the transfer from neutral position to the intended source.
TDEN Countdown timing before the emergency breaker is opened for transfer to the
normal source.
NEUTRAL Both breakers are opened and the load is disconnected.
MANUAL Waiting for an input signal to complete the manual re-transfer.
LOCK-OUT A trip condition has been detected by either breaker and the system is
locked-out from further transfers, or Option 9B, Maintenance Selector Switch,
is in the “OFF” position.
TER 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 To initiate an engine test sequence press Engine Test pushbutton again or press Increase
and Decrease simultaneously to clear.
WAIT Waiting for the generator source voltage and frequency to become available.
TDNV Waiting for load voltage to decay before completing the transfer.
TDP Countdown timing while waiting for a pre-transfer acknowledge input.
TSEQ Countdown timing between sequenced loads.
NO R xx No communications response on the sub-network was received from Addressable Relay II,
set for address xx.
WAIT NEU Waiting for the neutral position to be reached by the switch.
WAIT S1 Waiting for Source 1 breaker to open/close during a WLI closed transition.
WAIT S2 Waiting for Source 2 breaker to open/close during a WLI closed transition.
TSIP Countdown timing while waiting for sources to synchronize for an in-phase transition.
S1 BRKR Indicates that the Source 1 circuit breaker failed to open or close.
S2 BRKR Indicates that the Source 2 circuit breaker failed to open or close.
TDEF 1 Countdown timing before declaring Source 1 unavailable. This is only implemented if the
load is connected to Source 1 and Source 1 is a generator.
TDEF 2 Countdown timing before declaring Source 2 unavailable. This is only implemented if the
load is connected to Source 2 and Source 2 is a generator.
ABORT Indicates that an engine test or plant exercise was aborted after three unsuccessful
attempts. The Emergency Source did not remain available while TDNE was timing.
INHIBIT Indicates that a transfer to the Emergency Source is inhibited because the Emergency
Inhibit input is activated.
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