I. Basic Information

Product Positioning

Hardware Architecture

1. 100MHz High-performance Main Control Operation Unit: DX4-100 486 compatible processor with 16KB L1 cache, 128KB L2 cache and 8MB EDO DRAM, equipped with 33MHz PCI bus controller to ensure deterministic real-time execution of speed regulation, excitation closed-loop and unit protection tasks.
2. Dual Redundant ISBus Internal Bus Unit: Two independent backplane interfaces realize channel hot backup data transmission, automatic seamless switch upon single-link fault to avoid unit runaway or trip caused by internal communication interruption.
3. Multi-channel External Industrial Communication Unit: 1×10Base-T Ethernet port and 2×isolated RS232 serial ports support program downloading, fault wave recording export, remote parameter setting and real-time data uploading to upper monitoring systems.
4. Hardware Diagnosis & Fault Latching Unit: Multiple status LEDs and hardware reset buttons quickly locate power, bus, communication and program exceptions; fault codes and time sequence can be read via ControlST software for accident traceability.
5. Backplane Wide-voltage Power Supply & Multi-level Protection Unit: DC24V backplane power supply with reverse polarity, surge, ESD and short-circuit protection; conformal coated PCB adapts to high-temperature, dusty and strong electromagnetic interference cabinet environments.
6. Dual Half-slot Rack Mount Structure: Occupies two half slots of Mark VI/EX2100 standard rack with metal reinforced front panel, passive heat dissipation design reduces hidden equipment failure risks.

Mounting Specifications

• Operating Power Supply: DC24V (backplane supply, ±10% fluctuation), typical power consumption ≤12W
• Core Configuration: 100MHz 486 CPU, 16KB L1 Cache, 128KB L2 Cache, 8MB EDO DRAM
• Internal Bus: Dual redundant ISBus backplane bus
• External Communication: 10Base-T Ethernet, 2×isolated RS232
• Mounting: Standard rack dual half-slot embedded installation
• Dimension: 229mm × 127mm × 76mm
• Net Weight: 0.8kg
• Protection Class: IP20 (indoor closed cabinet only)
• Supporting Equipment: CABP backplane motherboard, series I/O modules, shielded communication cables, 24VDC redundant power supply
• Commissioning Tools: GE ControlST software, insulation resistance tester, anti-static wristband

Supporting System

Supporting Hardware

Commissioning Software

Upper-level System

Typical Application Industries

Product Features

1. Deterministic Real-time Safety Control: Hard real-time scheduling architecture meets SIL safety-level control requirements for turbine speed regulation and unit relay protection, effectively preventing major safety accidents such as unit overspeed.
2. Dual ISBus Redundant Fault-tolerant Design: Millisecond-level automatic link switch ensures uninterrupted unit control, greatly improving continuous operation reliability of key equipment.
3. Flexible Multi-interface Networking Operation: Ethernet realizes remote plant-wide data interaction, while serial ports support local debugging and fault data export to meet both remote and on-site maintenance requirements.
4. Visual On-site Fault Diagnosis: On-board LED indicators combined with software event log quickly locate equipment abnormalities and shorten unplanned outage maintenance time.
5. Wide-temperature Rugged Industrial Design: Stable operation within -20℃~+70℃, compliant with IEC EMC standards, high MTBF value supports 24/7 long-term continuous heavy-load operation.
6. Downward Compatible Hot-swappable Replacement: Fully compatible with IS215ACLEH1B legacy hardware, applicable to simplex and TMR redundant architectures, only program and parameter replication are required for rapid commissioning after replacement.

II. Technical Specifications

2.1 Electrical Parameters

• Model: IS215ACLEH1BC
• Backplane Supply: DC24V±10%, power consumption ≤12W
• CPU: DX4-100 486, 100MHz, 33MHz PCI bus
• Memory: 16KB L1 Cache, 128KB L2 Cache, 8MB EDO DRAM
• Communication: Dual ISBus, 10Base-T Ethernet, 2×RS232
• Dielectric Withstand Voltage: 1500VAC/1min for communication isolation channels
• Built-in Protection: Reverse polarity, surge, ESD, short-circuit, watchdog reset protection
• Core Functions: Unit control logic operation, closed-loop regulation, sequence interlock protection, I/O data scheduling, redundant bus management, fault diagnosis and event storage, online firmware upgrade.

2.2 Mechanical Parameters

• Mounting: Standard rack dual half-slot locking installation
• Structure: Flame-retardant multi-layer PCB, metal front panel, status LED array, reset button
• Interfaces: Dual ISBus backplane port, RJ45, dual RS232, backplane power interface
• Dimension: 229mm × 127mm × 76mm
• Net Weight: 0.8kg

2.3 Environmental Specifications

• Operating Temperature: -20℃ ~ +70℃
• Storage Temperature: -40℃ ~ +85℃
• Humidity: 5%~95%RH, non-condensing, no corrosive or conductive dust

III. Key Features

1. Core Real-time Unit Control Operation: Executes turbine speed regulation, load control, unit startup/shutdown sequence, grid synchronization and protection trip interlock strategies to guarantee stable grid-connected operation of generating units.
2. Dual Redundant ISBus I/O Data Scheduling: Cyclically collects field process signals and outputs control commands via redundant internal bus to realize bidirectional reliable data interaction between CPU and all I/O sub-modules.
3. Bidirectional Multi-channel External Communication: Uploads unit operating and fault data to plant upper monitoring system via Ethernet; serial ports support local program debugging and fault waveform export to realize dual remote and on-site maintenance modes.
4. Full-loop Fault Diagnosis & Accident Traceability: Automatically latches fault time, type and location upon hardware, bus or communication abnormality, providing complete original data for unit trip accident analysis.
5. Support for Simplex/Dual/TMR Redundant Architectures: Hot-swap replacement of faulty modules under redundant configuration without unit shutdown, maximizing continuous operation time of key equipment.
6. Standard Core Master Control Component for Mark VI & EX2100 Systems: Widely adopted in new unit commissioning, old cabinet hardware upgrading and preventive spare reserve of power and heavy industrial drive control systems.

IV. Working Principle

V. Application Scenarios

1. Spare replacement, annual maintenance calibration and trip fault data analysis for Mark VI turbine control systems in thermal and hydropower plants.
2. Technical upgrading of compressor unit control systems in petrochemical and gas pipeline stations to improve system operation performance and communication reliability.
3. Hardware maintenance of EX2100e excitation systems for steel and waste incineration power plants to realize stable reactive power regulation of grid-connected generators.
4. Preventive spare reserve for large industrial frequency drive control systems to deal with emergency hardware failure replacement of speed closed-loop and interlock protection master units.
5. Supporting deployment of control hardware for overseas new power station projects, adapting to harsh field operating environments with wide-temperature and redundant industrial performance.