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4. Two Mains with Tie Breaker
Standard Arc Configurations User Manual for Eaton Arc Flash Relays
MN026009EN January 2016 www.eaton.com
EAFR-101 CS:1
Table 26. Trip and I/O Description - EAFR-101 CS:1.
Light
Current
(External)
I/O Description
Trip Description
BI1
Binary input 1.
Signal inputs: BI1 (Current) from main unit EAFR-110P CS:2,A output HSO1.
S1
BI1
Sensor channel 1.
Monitoring outgoing cable compartment.
Trip criteria: C Light.
Trip outputs: T1 (outgoing CB), T3 (not in use), T4 (trip alarm).
Signal outputs: BO1 (Light) to main unit EAFR-110P CS:2,A after CBFP setting time.
S2
BI1
Sensor channel 2.
Monitoring outgoing circuit breaker compartment.
Trip criteria: C Light.
Trip outputs: T2 (CBFP), T4 (CBFP).
Signal outputs: BO1 (Light) to main unit EAFR-110P CS:2,A input BI2.
Signal inputs: BI2 (MT) from main unit EAFR-110P CS:2,A output HSO2.
S3/S4 BI1
Sensor channel 3/4.
Monitoring busbar compartment.
Trip criteria: C Light.
Trip outputs: T2 (CBFP), T4 (CBFP).
Signal outputs: BO1 (Light) to main unit EAFR-110P CS:2,A input BI2.
Signal inputs: BI2 (MT) from main unit EAFR-110P CS:2,A output HSO2.
BI2
Binary input 2.
Trip criteria: C Light.
Trip outputs: T1 (outgoing CB), T2 (not in use), T3 (not in use), T4 (trip alarm).
Signal inputs: BI2 (MT) from main unit EAFR-110P CS:2,A output HSO2.
Table 27. Trip and I/O Logic - EAFR-101 CS:1
Inputs
Outputs
Light
Current (External)
T1
T2
T3
T4
BO1
BI1
S1
BI1
x
x(CBFP)
x
x
x(CBFP)
S2
BI1
x(CBFP)
x(CBFP)
x
S3
BI1
x(CBFP)
x(CBFP)
x
S4
BI1
x(CBFP)
x(CBFP)
x
BI2
x(MT)
x(MT)
x(MT)
x(MT)