Description
1. Product Overview
Full Part Number: IS200PMCIH1AAA (suffix 6BA00 is complete order code with identical hardware function)Applicable System: GE Speedtronic Mark VI / Mark VIe gas & steam turbine generator control system, manufactured in the United States, a discontinued critical spare part for grid synchronization and power monitoring.Definition: PMCI stands for Phase Measurement & Control Interface Board. It serves as the core signal interaction unit between the turbine control system and generator grid connection loop. It samples 3-phase voltage and current analog signals, calculates phase angle, frequency, voltage difference, active/reactive power and power factor in real time, judges synchronization closing conditions, detects grid fault out-of-limit, and forwards excitation and speed regulation commands to the excitation system and governor. It supports simplex operation or 1+1/TMR redundant architecture to meet SIL safety requirements, widely used in maintenance replacement and technical renovation of legacy thermal power turbine control systems.
2. Hardware Structure & Functional Units
2.1 Multi-Channel Isolated Analog Input Unit
6 independent high-isolation sampling channels with 1500VAC isolation per channel, preventing high voltage backfeed from PT/CT secondary side. Compatible with ±10VDC and 4~20mA transmitter signals, equipped with hardware filtering and impedance matching to suppress grid harmonics and electromagnetic noise.
2.2 High-Precision Phase & Power Calculation Unit
Dedicated signal processing chip executes FFT operation to compute synchronization parameters and electrical power parameters with millisecond-level response. Hardware logic operation eliminates software scan delay to guarantee high precision of paralleling control.
2.3 Synchronization Interlock & Command Forwarding Unit
Built-in programmable hardware interlock logic to block closing output automatically if synchronization conditions are not satisfied, avoiding non-synchronous grid connection damage. Isolated command output to EX2100 excitation system and turbine actuator.
2.4 Redundant Dual Ethernet & Backplane Bus Unit
Dual 10/100Mbps RJ45 ports support SRTP redundant transmission and Modbus TCP for data upload to upper HMI system. Rear VME gold-plated connector connects to Mark VIe rack backplane bus for high-speed communication with CPU and I/O modules.
2.5 Jumper Configuration & On-Board Diagnosis Unit
Configurable jumpers set PT/CT ratio, protection threshold and communication address without program modification. Power-on self-test monitors channel break, signal over-range and link loss, with three front-panel LEDs indicating ONLINE, SYNC and MOD communication status.
2.6 Industrial Reinforced PCB Unit
Full conformal anti-moisture & anti-corrosion coating, double-reinforced component soldering, integrated EMI shielding, fanless maintenance-free design for 24/7 long-term operation under high temperature, vibration and dusty cabinet environment.
3. Technical Specifications
3.1 Signal & Function Parameters
| Item | Specification |
|---|---|
| Part Number | IS200PMCIH1AAA |
| Board Type | Phase Measurement & Control Interface (PMCI) |
| Input Channels | 3 voltage + 3 current totally 6 isolated channels |
| Isolation Withstand Voltage | 1500VAC per channel |
| Input Signal Type | ±10VDC, 4~20mA analog signal |
| Core Calculation | Phase difference, frequency difference, voltage difference, active/reactive power, power factor |
| Configuration Method | On-board jumpers for transformer ratio and protection threshold |
| Fault Mode | Hardware latch, cleared only by power cycle reset |
3.2 Electrical & Communication Parameters
- Front Ethernet: Dual RJ45 10/100M, SRTP / Modbus TCP
- Backplane Bus: Mark VIe dedicated VME parallel backplane bus| Power Supply | 24VDC rack backplane (18~32VDC tolerance) || Hot Swap | Hot plugging is strictly forbidden || Typical Power Consumption | ≤12W |
3. Environmental Specifications
- Operating Temperature: 0℃ ~ +60℃
- Storage Temperature: -40℃ ~ +85℃
- Humidity: 5%~95%RH non-condensing, no corrosive gas
- Max Altitude: ≤2500m
3. Mechanical Specifications
- Mounting: Standard Mark VI / VIe VME rack slot installation
- Dimensions: 260.4 × 19.9 × 127mm
- Net Weight: ~410g
- Material: V0 flame-retardant PCB with gold-plated backplane contacts
4. Core Product Advantages
- Full channel electrical isolation prevents primary high voltage from damaging core controller and improves system electrical safety.
- Hardware-level synchronization interlock provides fail-safe protection even if main CPU communication is lost to prevent dangerous non-synchronous paralleling.
- Dual redundant Ethernet ensures uninterrupted data transmission for critical monitoring links.
- Jumper-based parameter configuration enables plug-and-play replacement across different generator units without program revision.
- Comprehensive on-board self-diagnosis pinpoints fault location rapidly and reduces troubleshooting downtime.
- Conformal coated wide-temperature design adapts to harsh power plant environment and realizes low-maintenance long-cycle operation.
5. Application Scenarios
Thermal power gas/steam turbine generator synchronization control and electrical parameter monitoring; self-owned power plant and cogeneration unit grid connection interlock system; petrochemical turbo generator power supply monitoring; spare part replacement and system upgrade for legacy Mark VIe control systems.
