GE GEK-106465A instruction manual Hardware

Page 26

HARDWARE

For the second case shown on the table, open breaker, its auxiliary contact 52/a remains open, and current cannot flow through it for detecting continuity. In order to correctly monitor the circuit, a resistor must be used, not included in the protection, connected in parallel. The value of resistance will be selected so that the V 52/a input circuit minimum detection current flows, but not as high as to activate the breaker tripping coil. The figure shows the following equation:

V min – 15

R = -------------------

2

 

Where:

 

Vmin

Is the minimum voltage, in Volts, expected in the battery (e.g. 80% of Vn)

R

Resistance, in kilo ohms.

2

2 mA of approximate current flowing through input V 52/a

As shown in the second case in the table, with an open breaker, as current will flow through R if there is continuity in the WHOLE tripping circuit, voltage will be detected in input V 52/a.

This works correctly in steady state. However, if the breaker trips, while it is opening, the V 52/a input signal can be deactivated without this meaning that the circuit is not correct. This is due to the fact that the tripping relay, terminals 35-36, short circuits input V 52/a temporarily.

Therefore, if there is a trip signal, it is admitted that no signal will be detected during a period of 1 s to allow the breaker to open, and reopen the tripping relay 35-36.

FIGURE 3-11 shows the possibility of monitoring the circuit only when the breaker is closed. In this case resistance R will not be used, but it must be observed in the unit logic, that the corresponding signal CONTACT INPUT_00_15 (SUP_COIL2), will be activated showing a failure when the breaker is open, and therefore it will be required to supervise the continuity failure signalling by the breaker status information.

GEK-106465A

CIO Remote CAN Digital I/O Module

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Contents CIO Table of Contents INPUT/OUTPUT Modules Description Circuit Continuity Supervision InputsImportant Procedures CIO Front ViewInspection Checklist Identification Label A4454P5EUROPE, Middle East and Africa GE Multilin AMERICA, Asia and Australia GE MultilinSafety Instructions Hardware Architecture OverviewIntroduction to F650 and F600 Family of Relays Software ArchitectureCommunications Architecture Summary of Features Product DescriptionOrdering Code CIO DescriptionTechnical Specifications Category Standard Class Test Packaging and WeightType Tests ApprovalsPower supply Input/Output module Module DescriptionMechanical Description MountingRear Panel Mounting Rear Cover Description Wiring External ConnectionsWiring Diagram for Model CIOH1J1 226B5113F2 Mixed Termina Inputs Supervision BoardsBoard Option OutputsOperand Description SUPCOIL2Without Supervision With Current Supervision with SEAL-IN With Simple Voltage Supervision Internal State Circuit Output Breaker Operand StatusHardware Hardware With Double Voltage Supervision Operand Contact INPUT0015 SUPCOIL2 52/a 52/bStatus of Involved Elements Inputs to F650 Front Indicators SoftwareUser Interfaces Contact SEAL-IN Circuit Supervision and Contact SEAL-IN CircuitsCircuit Supervision Control Settings for INPUTS/OUTPUTS INPUT/OUTPUT Boards SettingsGeneral Board Settings Settings relative to Inputs Input LogicSettings relative to Outputs Output LogicInput Status Mixed Board Supervision Board Input activation signals Contact InputsINPUTS/OUTPUTS Status Board F, G, H, J TypeContact Output Status Contact Outputs activation signalsContact Output Activation Signals Contact Output Operates Board F, G, H, JIO Board Status Contact Output Reset Signals Contact Output ResetsContact Output Resets Board StatusGeneral Considerations on the Power Supply Network Visual InspectionIsolation Tests IndicatorsPower Suply Testing Source OptionInputs and Outputs Settings/Control Elements/Inputs Outputs/BoardCommunication with the Master Unit Digital InputsCoil Contact OutputsCircuit Continuity Supervision Inputs Latching Circuits
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