IB ATS-1005
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Instructional Booklet
Effective: March 2010
Page
5
Instructions for Installation, Operation and Maintenance of the
Eaton ATC-600 Automatic Transfer Switch Controller
Standard Feature: Commit to Transfer During TDNE Timing
(CTDNE)
This feature provides for selection as to whether or not commit-
ment to transfer is desired when Time Delay Normal to Emergency
countdown has begun. If no commitment is chosen and the Nor-
mal Source returns to availability when the TDNE timer is counting
down, the transfer is aborted and the engine generator (if applica-
ble) is cooled down.
Standard Feature: Engine Test Mode (TMODE)
This feature provides selection of the type of test that can be initi-
ated by the front panel Engine Test pushbutton. An engine test
without transferring the load to it, or an engine test with a full
transfer of the load to the engine can be chosen. Load testing is
fail-safe. If the generator fails during testing for any reason, the
ATC-600 will signal the transfer switch to return to normal. If dis-
able test mode is chosen, the front panel pushbutton cannot be
used to initiate a test.
Standard Feature: Test Engine Run (TER)
This feature provides selection of the length of time in hours and
minutes that the ATC-600 will enable the generator contacts dur-
ing an Engine Test that was initiated from the front panel pushbut-
ton or for the plant exerciser feature, if applicable.
Standard Feature 5C: Overfrequency Monitoring for Source 2
(2OFD, 2OFP)
This feature constantly monitors Source 2 for an overfrequency
condition. When the Source 2 frequency rises to a value equal to
or above the overfrequency dropout setting, the source will
become unavailable. The source’s frequency will then have to
drop to a value that is equal to or below the pickup setting to
become available again.
Standard Feature 5E: Overvoltage Monitoring for Source 2
(2OVD, 2OVP)
This feature constantly monitors Source 2 for an overvoltage con-
dition. When the Source 2 voltage rises to a value equal to or
above the overvoltage dropout setting, the source will become
unavailable. The source’s voltage will then have to drop to a value
that is equal to or below the pickup setting to become available
again.
Standard Feature 8C/8D: Transfer Time Delay Bypass
This feature allows an external pushbutton input to be used to
bypass the timer for Standard Feature (TDNE) or Standard Feature
(TDEN) individually, or both simultaneously. This feature is usually
used in testing when it is not desirable to wait for completion of
the timing sequence.
Standard Feature 23: Plant Exerciser (EXER)
This feature provides for the automatic test operation of the gen-
erator for a pre-selected weekly interval. When the test is running,
pressing and releasing the Engine Test pushbutton will cancel the
test. The day of the week, hour, and minute that exercising is
desired can be programmed into the ATC-600. The type of test,
whether a load transfer or just an engine test, can also be
selected. Load testing is fail-safe. If the generator fails during test-
ing for any reason, the ATC-600 will signal the transfer switch to
return to normal.
Standard Feature 26C: Overvoltage Monitoring for Source 1
(1OVD, 1OVP)
This feature constantly monitors Source 1 for an overvoltage con-
dition. When the Source 1 voltage rises to a value equal to or
above the overvoltage dropout setting, the source will become
unavailable. The source’s voltage will then have to drop to a value
that is equal to or below the pickup setting to become available
again.
Standard Feature 26D: Go To Emergency
This feature enables an external contact closure to initiate a trans-
fer from the Normal Source to the Emergency Source. If the
external contact is closed and the Emergency Source fails, the
ATC-600 will transfer the load back to the Normal Source.
Standard Feature 26E: Underfrequency Monitoring for Source 1
(1UFD, 1UFP)
This feature constantly monitors Source 1 for an underfrequency
condition. When the Source 1 frequency drops to a value equal to
or below the underfrequency dropout setting, the source will
become unavailable. The source’s frequency will then have to rise
to a value that is equal to or above the pickup setting to become
available again.
Standard Feature 26F: Overfrequency Monitoring for Source 1
(1OFD, 1OFP)
This feature constantly monitors Source 1 for an overfrequency
condition. When the Source 1 frequency rises to a value equal to
or above the overfrequency dropout setting, the source will
become unavailable. The source’s frequency will then have to
drop to a value that is equal to or below the pickup setting to
become available again.
Optional Feature 9B: Maintenance Selector Switch (MSS)
Marked “OFF”, “ON”. This feature provides selector switch dis-
connection of control to the transfer motor thus allowing testing
of the transfer switch control logic circuitry without initiating load
transfer. Manual disconnection is standard on all Eaton transfer
switches. Positioning the MSS in the “OFF” position isolates the
control circuit from the transfer motor, permitting manual opera-
tion of the transfer switch or testing of logic circuitry without load
transfer.
Optional Feature 10: Preferred Source Selection (PRF SRC)
This feature permits the selection of either source (1 or 2) as the
Preferred or Normal Source. The Normal Source is the source that
the switch always looks to for availability so that it can transfer to
it. When two generators are selected and the switch has trans-
ferred to the Emergency Source, the ATC-600 will constantly be
waiting and attempting to start the generator on the Preferred
Source so that it may return to it. IF NONE is chosen, the Pre-
ferred Source or the Normal Source will be the source that is pres-
ently attached to the load.
Optional Feature 16: Overcurrent Protection
When integral overcurrent protection is provided for either one or
both sources, the need for separate upstream overcurrent protec-
tion, in most instances, is eliminated. With this factory installed
feature in the ATC-600, further automatic transfer operation is
locked-out until the appropriate source breaker is reset.
Optional Feature 29G: Type of Operation (Selectable Automatic or
Manual)
This feature provides a two position selector switch marked Auto/
Manual which permits the selection of automatic or manual opera-
tion. It includes devices for manual operation when the selector
switch is in the manual position.
Optional Feature 29J: Type of Operation (MANTR)
This feature provides for a selection between an automatic trans-
fer and re-transfer mode or a manual pushbutton re-transfer to
Normal from the Emergency Source mode. If this option is not
selected the factory default selection is automatic.
