Instructional Booklet
Page 26 Effective: March 2021
Operation and Maintenance Manual,
Automatic Transfer Switch Controller, ATC-900
For more information visit: www.eaton.com IB140012EN
26E Go to Emergency (S2) Input w/selector Switch OF OF OF OF OF OF OF OF OF I
26H Phase Reversal Protection S S S S S S S S S
26J All Phase Undervoltage/Underfrequency S S S S S S S S S
26K All Phase Overvoltage/Overfrequency S S S S S S S S S
26M All Phase Voltage Phase Loss S S S S S S S S S
26L All Phase Voltage Unbalance S S S S S S S S S
Alternative Transfer Modes of Operation
29E ATS on Bypass - - - P P - - - -
29G Selector Switch for Auto or Non-Auto Operation (Monitor) OF OF OF OF OF OF OF OF OF
29K Manual Retrtansfer (INPUT) P P P P P P P P P I
29J Manual (Pushbutton) Transfer E to N; Automatic N to E (INPUT) OF OF OF OF OF OF OF OF OF I
29L Manual Retransfer On/Off (INPUT) P P P P P P P P P I
29M Manual Retransfer On/Off Input w/selector switch OF OF OF OF OF OF OF OF OF I
Open Transfer Operation Modes
32A Time Delay Neutral Adjustable 0 - 10 min (delayed transition) - P P P - - P P -
32B Load Voltage Decay Adj. 2 - 30 % Nominal Voltage - P P P - - P P -
32C In-Phase Transition Defaults to Load Voltage Decay - - P P - - - P -
32D In-Phase Transition Defaults to Time Delay Neutral - - P P - - - P -
32F In-Phase Transition S - - - - - - - -
35A Pretransfer Signal Contacts Form C (OUTPUT) P P P P P P P P P O
35C Pre/Post Transfer Signal (OUTPUT) P P P P P P P P P O
35D Post Transfer Signal Contacts Form C P P P P P P P P P O
36 Load Shed - S2 Inhibit (INPUT) P P P P P P P P P I
36A Load Shed - S2 Inhibit w Keyed Switch (INPUT) OF OF OF OF OF OF OF OF OF I
37 Go to "Isolated" Position (not SE Rated) (INPUT) - P P P P P P P P I
37A 37A Go to Isolated (SE) (INPUT) PF PF PF I
Load Control Contacts
45A Load Sequencing Contacts (1) (OUTPUT) P P P P P P P P P O
45B Load Sequencing Contacts (2) (OUTPUT) P P P P P P P P P O
45C Load Sequencing Contacts (3) (OUTPUT) P P P P P P P P P O
45D Load Sequencing Contacts (4) (OUTPUT) P P P P P P P P P O
45E Load Sequencing Contacts (5) (OUTPUT) P P P P P P P P P O
45F Load Sequencing Contacts (6) (OUTPUT) P P P P P P P P P O
45G Load Sequencing Contacts (7) (OUTPUT) P P P P P P P P P O
45H Load Sequencing Contacts (8) (OUTPUT) P P P P P P P P P O
45I Load Sequencing Contacts (9) (OUTPUT) P P P P P P P P P O
45J Load Sequencing Contacts (10) (OUTPUT) P P P P P P P P P O
45L Selective Load Shed (Assign up to 20 Contacts) P P P P P P P P P O
Closed Transition Operational Modes
47C Closed /In-Phase Transition default to Load Voltage Decay - - - - O O - - O
47D Closed Transition - - - - O O - - O
47E Closed/In-Phase Transition default to Time Delay Neutral - - - - O O - - O
47F Closed Transition to Load Voltage Decay - - - - O O - - O
47G Closed Transition Time Delay Neutral - - - - O O - - O
Communications
48F MODBUS Communication S S S S S S S S S
48G Ethernet TCP/IP O O O O O O O O O
Table 8. ATC-900 Features and I/O (Cont.).
ATC-900 FEATURES
P = Programmable (Internal or I/O), PF = Prgammable Fixed I/O
O = Optional, OF = Optional Fixed, S = Standard
CONTAC TOR MCCB MAGNUM
ATC9 BIC9 CBC9 CTC9 ATx9 ATV9 CBV9
C2 C3 C5 C/D C/D C3 BIV9 CTV9 I/O