Woodward easyYgen LS-6XT Circuit Breaker Control Unit: Technical Characteristics, Installation and Application Guide

Supports multiple wiring configurations: 3-phase 4-wire, 3-phase 3-wire, 1-phase 3-wire, 1-phase 2-wire

Current measurement connection:

System A current: terminals 3-8 (L1, L2, L3 phases)

System B current: terminals 1-2 (single-phase)

The CT direction should be based on the software version. Note that version 2.10-0 points to system A, while version 2.10-1 and above points to system B

Power measurement configuration:

CBA mode: measuring power flow between system A and system B

CBA/BBB mode: Simultaneously monitor the power status of two circuit breakers

The definition of power factor follows international standards (inductive load is positive, capacitive load is negative)

System configuration and parameter settings

3.1 Access Level and Password System

LS-6XT adopts a multi-level password protection system, providing 5 access levels:

Basic level (CL01): Restricted viewing permission, no configuration permission

Temporary debugging level (AC02): Algorithm code access, expires after session ends

Debugging Level (CL03): General Debugging Parameter Access

Temporary Super Debugging Level (AC04): Algorithm Code Access Advanced Features

Super Debugging Level (CL05): Almost Full Access (except for calibration and super user items)

Access channels include:

Local HMI of the device (basic code input)

USB connection ToolKit (user account login)

Ethernet remote panel (user account login)

Third party devices use Modbus TCP/CANopen/RS-485

3.2 HMI Operation and Navigation

The main screen of the device is divided into five main areas:

Numerical display area: real-time data such as voltage, current, frequency, power, etc

Status message area: operating mode, device status

Alarm message area: Latest unconfirmed alarm

Single line diagram area: visualization of circuit breaker status and power flow direction

Soft key function area: Navigation and operation control

Special function screen:

Customer customized screen: up to 18 customizable monitoring values can be configured

Synchronous oscilloscope: visually display the phase difference between system A and B

Logic Manager: Visualize Logic Conditions and Variable States

Event history: system event records with timestamps

3.3 Key parameter configuration

Language and clock settings:

Supports English, German, and one reserved language

Real time clock with configurable time zone and daylight saving time rules

Network time can be synchronized through SNTP protocol

Measurement configuration:

Voltage Transformer Ratio Setting (Parameters 1800, 1803, 1812)

Current Transformer Ratio and Direction Configuration

Definition of power measurement symbols (based on CT installation direction)

Circuit breaker configuration:

Operation mode selection: manual/automatic

Synchronization parameters: frequency difference, voltage difference, phase angle, dwell time

Dead bus closure condition setting

Logical Command Configuration (AMF Function)

Monitoring function configuration:

System A/B protection: overvoltage, undervoltage, overclocking, underfrequency, voltage asymmetry, etc

Circuit breaker monitoring: closing transition monitoring, unloading mismatch detection

Communication monitoring: CAN, Ethernet, multi unit system status

Application Mode and Advanced Features

4.1 Application layer architecture

LS-6XT supports a two-tier application architecture:

Layer 1: Generator Unit Layer

Communicate with easyYgen-3000XT and other LS-6XT

Support CBA or CBA/BBB circuit breaker modes

Special application modes: L-MCB, L-GGB, L-MCB/GGB

Main power failure detection and main power decoupling

Layer 3: Power Station Layer

Communicate with group controller (GC) and other LS-6XT

Support CBA or CBA/BBB circuit breaker modes

Main power fault detection and decoupling (GCB)

4.2 Synchronization check function

As a redundancy check function, synchronous inspection enhances system security:

Available command variables:

02.29 Synchronization conditions: dependent on voltage, frequency, and phase angle

02.30 Dead bus closure condition: depends on system A/B voltage and dead bus configuration

02.28 Synchronization check relay: Triggered when any of the above conditions are met

Key parameters:

Positive/Negative Frequency Difference CBA (5711/5712)

Voltage difference CBA (5710)

Maximum positive/negative phase angle CBA (5713/5714)

Phase matching dwell time CBA (5717)

4.3 Expansion of External I/O Modules

External I/O modules can be connected via CAN1 bus:

IKD1: Up to 2, providing 16DI/16DO

IKD-IN-16:1, providing 16DI

IKD-OUT-16:1, providing 16DO

The configuration tool can be accessed through ToolKit and supports flexible digital input monitoring and relay output control.

4.4 Communication and Protocol Support

CAN interface:

CAN1 interface supports CANopen protocol

Support Process Data Objects (PDO) and Service Data Objects (SDO)

Configurable load balancing communication parameters

Ethernet interface:

Three independent 10/100Base-T ports

Supports Modbus TCP/IP protocol

Remote Panel Access (RP-3000XT)

System interconnection function (new feature)

Serial interface:

RS-485 supports half duplex/full duplex operation

Modbus RTU protocol

USB 2.0 Device Interface (ToolKit Connection)

Load balancing:

Broadcast messages via CAN bus or UDP (Ethernet)

Configurable transmission rate and timeout period