3.8.2.1 Default I/O connections
Binary input Default usage Connector pins
X110-BI1 MCB open X110-1,2
X110-BI2
Directional Earth Fault Protection's Basic Angle
Control X110-3,4
X110-BI3 Circuit breaker low gas pressure indication X110-5,6
X110-BI4 CB spring charged indication X110-7,6
X110-BI5 CB Truck in (Service position) indication X110-8,9
X110-BI6 CB Truck out (Test position) indication X110-10,9
X110-BI7 Earthing switch closed indication X110-11,12
X110-BI8 Earthing switch open indication X110-13,12
X120-BI1 Blocking of overcurrent instantaneous stage X120-1,2
X120-BI2 Circuit Breaker Closed indication X120-3,2
X120-BI3 Circuit Breaker Open indication X120-4,2
X120-BI4 Lock-out reset X120-5,6
Binary output Default usage Connector pins
X100-PO1 Close circuit breaker X100-6,7
X100-PO2 Breaker failure backup trip to upstream breaker X100-8,9
X100-SO1 General Start indication X100-10,11,(12)
X100-SO2 General Operate indication X100-13,14
X100-PO3 Open Circuit Breaker/trip coil 1 X100-15-19
X100-PO4 Open Circuit Breaker/trip coil 2 X100-20-24
X110-SO1 Upstream Overcurrent Blocking X110-14,15
X110-SO2 Over current operate Alarm X110-17,18
X110-SO3 Earth fault operate Alarm X110-20,21
X110-SO4 Voltage protection operate Alarm X110-23,24
LED Default usage
1 Overcurrent protection operated
2 Earth-fault protection operated
3 Voltage protection operated
4 Negative-sequence overcurrent or phase discontinuity protection operated
5 Thermal overload protection operated
6 Circuit-breaker failure protection backup protection operated
7 Disturbance recorder triggered
8 Circuit-breaker condition monitoring alarm
9 Supervision alarm
10 Arc fault detected
11 Autoreclose in progress
1MRS756378 D Section 3
REF615 variants
REF615 95
Application Manual
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