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RIGHT SIDE VIEW
LEFT SIDE VIEW
J15 S1 & S2 Generator
Start
J4 (4 Programmable Form C Outputs)
J5
J1, J2, J3
Connectors
J12 User Modbus
K1=S2 Open
K2=S1 Open
K3=S1 Close
K4=S2 Close
J7
Control Power
Sources 1 and 2
TOP VIEW
J4 Source
Available Outputs
J9
4 Programmable
Inputs
J6
RS-232
J14
CT
Earth Controller Ground
J8 USB Front Panel Memory
Stick Interface
J11 I/O
Module(s)
SW1 Modbus
Terminator
Module
J13
RS-422
Interface
Source/Load
Interface
Switch Position
Contacts
For more information visit: www.eaton.com
IB140036EN
Instruction Booklet
Page
18
Effective: October 2014
O&M Manual for 40-1200A (480/600 Vac) ATC-900 3-Position,
Open/Closed Transition Contactor Based Transfer Switch
Figure 13a. ATC-900 (Top Left, and Right Side Views).
Figure 13b. I/O Module.