Description
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IS220PPRAS1B Other names:
Gas turbine module IS220PPRAS1B
IS220PPRAS1B Input/Output Module
Controller module IS220PPRAS1B
IS220PPRAS1B Analog Controller
Product Description
IS220PPRAS1B is a turbine specific I/O module. It aims to provide direct interfaces for specific turbine field equipment. This setting eliminates or reduces many previously required instruments for connecting to on-site equipment, while also improving operational reliability and reducing long-term maintenance. IS220PPRAS1B is typically used in conjunction with TREAH-A terminal blocks for emergency trip applications in aviation derived turbines. This component can be connected to barriers or box terminal blocks. IS220PPRAS1B has voltage sensing field wiring limitations, limiting cable length to 1000 feet for 18 AWG wiring. It should be noted that IS220PPRAS1B cannot be automatically reconfigured when exchanging BPPB P-Pack with BPPC P-Pack.
IS220PPRAS1B is equipped with a front panel that is labeled with component ID numbers and multiple LED indicator lights. These indicator lights are placed in pairs on the front panel. The first pair is marked as PWR/ATTN, the second pair is marked as LINK/TxRx and ENET 1, and the third pair is marked as LINK/TxRx and ENET2. The last component is located at the bottom of the panel; Mark as IR port.
IS220PPRAS1B receives three speed signals. This includes deceleration, acceleration, and speeding. This component also has hardware implemented overspeed function. This component monitors the status and operation of the selected trip board through a set of comprehensive feedback signals. This component supports TMR and simplex backup protection.
IS220PPRAS1B is equipped with a high-speed processor and two completely independent 10/100 Ethernet ports. This component has a hardware reset circuit and a watchdog timer. The temperature is monitored by internal sensors.
IS220PPRAS1B is a backup turbine protection (PPRO) I/O package developed by GE. The backup turbine protection (PPRO) I/O package and related terminal boards provide an independent backup overspeed protection system, as well as backup checks for synchronization between the generator and the common bus. They also serve as independent watchdog for main control. Three Triple Modular Redundant (TMR) PPRO I/O packages installed on separate Simplex Protection (SPRO) terminal blocks or three PPROs installed on TMR TPROH # C terminal blocks form a typical protection system. Each SPRO or TPROH # C is connected to the designated emergency trip board through a cable with DC-37 pin connections at both ends:
TREG represents the emergency trip terminal block for gas turbines.
TREL: Emergency Trip Terminal Block for Large Steam Turbines
TRES: Emergency trip terminal block for small and medium-sized steam turbines
Different configurations place three PPRO I/O packages directly on TREA for single board TMR protection systems. In order to communicate with the control module through IONet, PPRO includes an Ethernet connection.
Function Description
The I/O package contains two Ethernet ports, a power supply, a local processor, and a data acquisition board. This design simplifies or eliminates most of the instruments previously required to connect on-site equipment, while improving operational reliability and reducing long-term maintenance costs.
IS220PPRAS1B is used in aviation derived turbine emergency trip applications and is typically used in conjunction with TREAH terminal blocks. This component can be connected to barrier type or box type terminal blocks. For voltage sensing, this component has on-site wiring limitations, limiting cable length to 1000 feet for 18 AWG wiring. When switching from BPPB P-Pack to BPPC P-Pack, the component cannot be automatically reconfigured.
The front panel of this component is marked with the component ID number and many LED indicator lights. They are arranged in pairs on the front panel. PWR/ATTN is the first pair, LINK/TxRx and ENET2 are the second pair, and LINK/TxRx and ENET2 are the third pair. The last component is the IR port, located at the bottom of the panel.
This component is equipped with a high-speed processor and two completely independent 10/100 Ethernet ports. The kit also includes a hardware reset circuit and a watchdog timer. Built in sensors can track temperature.
Compatibility
The PPRO I/O package includes one of the following compatible BPPx processor boards:
PPROH1A is equipped with a BPPB processor board.
PPROS1B includes a BPPC processor board that is compatible with the ControlST software suite V04.07 and higher.
Simplex control
The Mark VIe control trip board TRES supports simplex backup protection.
The controller IONet has a PPRO network port.
All Mark VIe control backup trip boards, TREG, TREL, TREA, and TRES have TMR backup protection function. In this setup, each I/O packet is connected to a different (R, S, T) controller network.
Triple control
When using TMR main control, backup protection (two out of three operation) is supported. All Mark VIe control backup trip boards (TREG, TREL, TREA, and TRES) support this setting. In standard network configuration, the first PPRO I/O packet is connected to the R network, the second PPRO is connected to the S network, and the third PPRO is connected to the T network.
Frequently asked questions
What is IS220PPRAS1B ?
IS220PPRAS1B is a backup turbine protection (PPRO) I/O package developed by GE.
Is this component compatible with simplex and TMR systems?
Yes, the board is compatible with both simplex and TMR systems.
Can IS220PPRAS1B automatically reconfigure when switching from BPPB P-Pack to BPPC P-Pack?
Unable to automatically configure when switching from BPPB to BPPC P-Pack.
How to obtain the IS220PPRAS1B component?
Please contact the Industrial Control Sales Consultant: Carrey to understand the IS220PPRAS1B wiring board or other turbine control requirements.
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admin –
II. Core Functions
Steam Turbine/Generator Backup Overspeed Protection
Independently acquires signals from a reluctance speed probe. Overspeed is determined by a hardware circuit, independent of the main control CPU. Emergency tripping can still be executed in case of main controller failure, making it a crucial component of the power plant’s triple overspeed protection for steam turbines.
Unit Emergency Trip Logic Processing
Acquires external tripping signals (high vibration, high oil temperature, low oil pressure, manual shutdown, shaft displacement exceeding limits, etc., hard-contact points). Hardware logic interlocks and outputs tripping commands to quickly cut off fuel and main steam valves.
Synchronization and Grid Connection Protection Verification
Real-time monitoring of generator and grid voltage, frequency, and phase difference. In case of abnormalities, grid connection is blocked to prevent asynchronous impacts from damaging the unit.
Dual-Channel Redundant Industrial Ethernet Communication
Dual ENET1/ENET2 ports on the panel, redundant dual Tricon communication links, enabling real-time interaction with the Mark VIe controller, HMI, and fault diagnosis system to exchange protection status, alarms, and trip records.
Complete board self-diagnostics
Onboard WDOG watchdog, channel open/short circuit detection, power monitoring, fault indicator lights (SIL, OSPD, ESTP, RUN, SYNC), and uploads system fault codes for easy troubleshooting.
III. Key Electrical and Environmental Parameters
Parameter Item Specifications
Power Supply DC 24V System backplane power supply
Operating Temperature -30℃ ~ +65℃
Humidity 5%~95% Non-condensing
Protection IP20, rack-mounted
Communication Dual-channel 100Mbps Ethernet, ControlST bus
Installation Mark VIe standard rack-mount hot-swappable modules
Certifications UL, CE, ATEX Zone 2 explosion-proof certification
MTBF Over 400,000 hours, designed for long-term power plant operation
IV. Hardware Interface Layout
Front Panel Indicator Lights
SIL Safety Circuit, SYNC Synchronization, WDOG Watchdog, OSPD Overspeed, ESTP Emergency Trip, RUN Operating Status;
Dual Network Ports TWR LINK Network Status, ATN Fault Alarm, DXR Data Interaction.
Backplane Side
Dual Ethernet RJ45 ports for connecting to the system control bus;
Terminal Side
High-density DB-type interface for connecting external speed probes, trip hard contacts, and trip output relay circuits.
V. Typical Application Scenarios
Combined Cycle Power Plants: GE heavy-duty gas turbine (9FA/7FA, etc.) Mark VIe control system;
Thermal Power Steam Turbine Generator Sets: Steam turbine emergency trip and backup overspeed protection cabinet;
Cogeneration and Self-owned Power Plants: Generator grid connection safety interlock;
Industrial Drive Large Turbine Units: Compressor units and chemical turbine safety protection.
VI. Differentiation within the same series (IS220PPRAS1B vs IS220PPROS1B)
IS220PPRAS1B: General-purpose protection I/O, covering overspeed, interruption, and synchronizing functions;
IS220PPROS1B: Simplified emergency overspeed dedicated I/O, focusing on turbine overspeed backup protection, a subset of functions.
https://www.weikunfadacai1.com/product/is220ppras1b-protection-i-o-module-is220ppras1b/
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The IS220PPRAS1B is a dedicated I/O module for turbine emergency protection with an independent safety class. It is used in the TMR triple-redundant overspeed protection circuit to achieve backup overspeed protection independent of the main controller. It is a key hardware component for the unit’s ETS and overspeed protection (OPC/mechanical overspeed backup).
Differentiation within the same series:
IS220PPRAS1B (PPRA): Standard overspeed protection I/O, configured with 6 speed inputs.
IS220PPROS1B (PPROS): Enhanced protection I/O; channel definitions and terminal blocks differ, and they are not directly interchangeable.
II. Key Hardware Information
Supporting Terminal Block: TREA terminal block (module direct-insertion baseboard, DB50 interface for field signals)
Communication Interface: Dual network ports ENET1 / ENET2 → IONet (Mark VIE real-time Ethernet bus, dual redundant communication)
Speed Channels: 6 independent magnetoresistive speed sensor (MPU) inputs, acquiring shaft speed pulses.
Power Supply: Nominal DC24V
Operating Environment: -30℃ ~ +65℃; supports explosion-proof certification Ex nA IIC T4 Gc
Typical Architecture: A typical turbine protection system uses 3 IS220PPRAS1B units in a 2-out-of-3 TMR configuration. Overspeed protection to prevent single-point fault failure/false tripping
Onboard resources: Built-in high-speed processing unit, Flash+RAM; equipped with channel self-diagnosis and disconnection detection
III. Main Functions
MPU speed signal acquisition, pulse digitization, real-time speed calculation
Hardware-level backup overspeed judgment: Outputs emergency trip command when exceeding the set speed threshold (independent of the main CPU logic channel)
Speed increase/decrease rate (acceleration) monitoring
Channel fault diagnosis: Sensor disconnection, short circuit, and signal abnormality are reported to the controller
Protection status and trip signal hard-contact output, linked to ETS tripping circuit
Upload speed, protection status, and fault alarm to Mark VIe controller
IV. Typical Application Scenarios
Heavy-duty gas turbine and steam turbine generator sets (thermal power/combined cycle power plants)
Triple redundancy overspeed protection system (Backup Overspeed)
Mark VIeS SIL safety level control scheme
V. Maintenance Points
Spare parts interchange reminder IS220PPRAS1B ≠ IS220PPROS1B; the suffix letter (S1B) indicates the hardware version; when replacing, try to use the same version.
Key debugging points: The 6 MPU channels need to be assigned sensor numbers, speed proportional coefficients, and overspeed trip settings in the control configuration; the triple redundancy logic needs to be tested to ensure that the system does not falsely trip when a single card fails.
Common Fault Symptoms
ATT/FAIL Light On: Channel disconnection, poor contact on the baseboard, module hardware failure
SPEED Invalid: MPU wiring polarity, insufficient pulse amplitude, damaged terminal block TREA
Manual Reference Number: GEH-6721L (Mark VIe I/O Hardware Specification Manual)
VI. Simple Distinction Memorization
PPRA (IS220PPRAS1B): Standard 6-channel speed protection I/O, compatible with TREA baseboard
PPROS (IS220PPROS1B): Extended protection I/O, different terminal definitions and function sets; cannot be arbitrarily substituted.
https://www.weikunfadacai1.com/product/is220ppras1b-protection-i-o-module-is220ppras1b/