Description
IS220PPROS1B 336A5026ADP22 – Emergency Turbine Protection I/O Pack is available in stock which ships the same day.
IS220PPROS1B 336A5026ADP22 – Emergency Turbine Protection I/O Pack comes in UNUSED as well as REBUILT condition.
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IS220PPROS1B 336A5026ADP22 Other names:
Interface board IS220PPROS1B 336A5026ADP22
IS220PPROS1B 336A5026ADP22 module
Analog module IS220PPROS1B 336A5026ADP22
Product Description
The IS220PPROS1B 336A5026ADP22 is a Turbine specific I/O module. It is designed to provide a direct interface to specific turbine field devices. This setup eliminates or reduces much of the previously needed instrumentation needed to make the connection to field devices, and also improves running reliability and reduces long term maintenance. The IS220PPROS1B 336A5026ADP22 typically works with the TREAH_A terminal board and is used in Aeroderivative Turbine Emergency trip applications. The component can connect to either barrier or box type terminal blocks. The IS220PPROH1A has field wiring restrictions for voltage sensing that limits cable length to 1,000 feet of 18 AWG wiring. It is important to note the IS220PPROH1A cannot be auto-reconfigured when swapping a BPPB P-Pack with a BPPC P-Pack.
The IS220PPROS1B 336A5026ADP22 is built with a front faceplate that is marked with the component id number and several LED indicators. These are placed on the front faceplate in pairs. The first pair is labeled PWR/ATTN, the second LINK/TxRx and ENET 1, and the third LINK/TxRx and ENET2. A final component is located at the bottom of the faceplate; this is labeled IR Port.
The IS220PPROS1B 336A5026ADP22 accepts three speed signals. This includes deceleration, acceleration, and overspeed. The component also has hardware implemented overspeed. The pack monitors the status and operation of selected trip boards through a set of comprehensive feedback signals. The pack supports TMR and simplex back up protection.
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The IS220PPROS1B 336A5026ADP22 is built with a high speed processor and two fully independent 10/100 Ethernet ports. The pack has a hardware reset circuit and watchdog timer. Temperature is monitored by an internal sensor.
FUNCTIONAL DESCRIPTION:
IS220PPROS1B is an Emergency Turbine Protection I/O Pack manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Control Systems. A backup Overspeed protection system with a backup check for generator synchronization to a utility bus is provided by the Emergency Turbine Protection I/O pack (PPRO) and related terminal boards. They also serve as the primary control’s independent watchdog. Three triple modular redundant (TMR) PPRO I/O packs mounted to a separate simplex protection (SPRO) terminal board make up a typical protection system. Each SPRO is connected to the designated emergency trip board by a cable with DC-37 pin connections on both ends:
TREG: Gas Turbine Emergency Trip Terminal Board.
TREL: Large Steam Turbine Emergency Trip Terminal Board.
TRES: Small/Medium Steam Turbine Emergency Trip Terminal Board.
TREA: Turbine Emergency Trip Terminal Board.
A single-board TMR protection system using three PPRO I/O packs is possible in a different configuration. The PPRO connects to the control modules via Ethernet for IONet communications. The primary and backup trip systems for the Mark* VIe control are integrated at the trip terminal board level. The Turbine Primary I/O pack, PTUR, which uses a primary trip board, provides primary protection (TRPG, TRPL, TRPS, TRPA). The PPRO I/O pack operates a backup trip board to provide backup protection (TREG, TREL, TRES, TREA).
PPRO can handle three different types of speed signals, including hardware-implemented Overspeed, acceleration, deceleration, and basic Overspeed. The pack keeps an eye on the primary control’s performance and can check the primary speed to make sure everything is running normally.
Through a broad range of feedback signals, PPRO keeps track of the status and functionality of the chosen trip board. PPRO will trip the backup trip relays on the trip board and initiate a trip on the primary control if a fault is found. The principal control action has no bearing on the pack and is completely independent of it.

COMPATIBILITY:
Direct mounting on SPRO or TREA is supported by PPROH1A. It is cable-compatible with TREG, TREL, and TRES when placed on SPRO.
SIMPLE MAIN CONTROL:
The Mark VIe trip board TRES supports simplex backup protection. The controller IONet has one PPRO network port. All Mark VIe backup trip boards, TREG, TREL, TREA, and TRES, feature TMR backup protection. In this setup, the controller IONet is connected to one port on each of the three PPRO I/O packs.
DUAL MAIN CONTROL:
The Mark VIe trip board TRES supports simplex backup protection. The R controller is connected to the network first when this setup is used. The S controller is accessible via the second network connection. Then, PPRO is in charge of overseeing the performance of both controllers. The pack trips if either controller fails, or both controllers fail, according to PPRO.
INSTALLATION:
The Mark VIe SPRO or TREA terminal board accepts the PPRO’s direct mounting. Cables with DC-37 pin connections on both ends are necessary between the SPRO board and the chosen trip terminal board when placed on an SPRO board. The following are the installation steps:
Install the SPRO or TREA terminal board firmly. If SPRO is used, mount the chosen trip terminal board.
If TREA is not utilized, connect a cable with DC-37 pin connections on both ends between SPRO and the chosen trip terminal board.
Directly connect three PPRO modules to TREA or one PPRO module to each SPRO.
PPRO’s threaded posts, which are situated on either side of the Ethernet ports, should be slid into the openings in the mounting bracket for the terminal board.
To ensure a tight fit between the PPRO’s DC-62 pin connector and the terminal board, adjust the bracket’s position. Secure the mounting bracket firmly.
Only one adjustment should be necessary during the lifespan of the product. Lock PPRO in place by firmly tightening the nuts on the threaded posts.
Depending on the setup of the machine, connect either one or two Ethernet wires. The PPRO module chooses the appropriate operation over either port and is not sensitive to Ethernet connections.
Connect the module’s power connector, which is located on its side, to power it up. The I/O module has a built-in soft-start feature that regulates current levels when used.
To customize the module as needed, use the ToolboxST* program.
OPERATION:
The I/O pack or module function-specific acquisition board is connected to the processor board. The soft-start circuit ramps up the voltage available on the processor board when input power is applied. The processor reset is turned off and the local power supply is turned on in order. After finishing self-test routines, the processor loads application code from flash memory that is particular to the I/O pack or module type. To verify that the application code, acquisition board, and terminal board are correctly matched, the application code reads the board ID information. When there is a good match, the processor makes an effort to start Ethernet connections by asking for a network address.
The whole circuitry required to enable the I/O pack to function from one or two Ethernet inputs is contained in the processor application code. Both network pathways are constantly active when two Ethernet inputs are used. The I/O pack or module operation will not be hampered by a failure of either network, and the functioning network connection will reveal the failure. Compared to a traditional hot-backup system, where the second port is only used when the primary port fails to function, this configuration is more fault tolerant. The processor’s Ethernet ports automatically negotiate between half-duplex and full-duplex operation at speeds between 10 MB/s and 100 MB/s. Each Mark VIe Ethernet I/O pack or module shares a processing board. It has the following in it:
A fast CPU with flash memory and RAM.
Two connectorized, totally independent 10/100 Ethernet ports.
A hardware reset circuit and watchdog timer.
A temperature sensor inside.
LEDs that display status.
The capacity to read IDs on other boards through electronic means.
An input power connector with a current limiter and a soft start.
Local power supplies, with monitoring and sequencing.
Frequently asked questions:
How to check the price and supply situation of IS220PROS1B?
Please call+86 18030177759 to contact the Industrial Control Sales Consultant: Carrey for sales or to request a quote.
What payment methods do you accept?
Bank transfer is the preferred payment method. If you need more payment methods, please contact us.
How to package circuit boards when shipping from Xiongba Industry?
The parts are placed in the anti-static packaging and safely packed in the anti-static box, which is padded with anti-static foam to protect the electrical components.
All products on this website are special products, and market prices have been fluctuating,
The specific customer service quotation shall prevail, as the product is a new one and the traps are not real,
Please confirm the model, product, price, and other detailed information with customer service before placing an order. The website has been used,
New for sale, please contact the website( https://www.weikunfadacai1.com/ )Customer service communication.
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II. Core Functions (Key Differences from IS220PPRAS1B)
IS220PPROS1B Specialized Overspeed Emergency Trip (Simplified Safety Protection Type)
Multi-channel MPU Magnetoresistive Speed Acquisition (3 Independent Speed Measurement Channels)
Connects to the turbine shaft magnetoelectric speed probe; hardware circuitry calculates speed in real time; independent hardware overspeed determination; response ≤5ms; can still execute tripping even in main control system crashes or communication interruptions; a crucial backup channel for power plant triple overspeed protection.
Emergency Trip Hard Logic Interlock
Acquires data from external tripping hard contacts (manual shutdown, shaft displacement, vibration, oil pressure protection); internal hardware relay circuit directly outputs tripping commands, cutting off the main steam valve and fuel valve.
Simplified Synchronization Interlock Backup Verification
Only performs grid-connected overspeed interlocking; lacks complete synchronization voltage and frequency regulation logic (this is the biggest difference from PPRAS1B).
Onboard Safety Self-Diagnosis
Channel disconnection/short circuit detection, 24V power supply monitoring, watchdog WDOG, relay circuit self-test, direct display of fault indicator lights, and recording of trip event codes uploaded to ControlST.
Dual Redundant IONet 100Mbps Ethernet
Dual RJ45 network ports ENET1/ENET2, redundant bus for interaction with the controller, HMI, and fault diagnosis system to protect status.
Comparison of IS220PPRAS1B (General-Purpose All-Round Protection Card, model mentioned above)
PPRAS1B: Full-function protection, complete synchronous grid connection, multiple circuit interruption, overspeed, vibration, and oil temperature parameter processing;
PPROS1B: Overspeed-specific simplified version, omitting complete synchronous regulation logic, lower cost, only for backup overspeed + emergency interruption, mostly used in triple overspeed redundancy configurations of units.
III. Key Hardware Electrical Parameters
Parameter Item Standard Specifications
Backplane Power Supply DC24V
Speed Measurement Input 3-channel MPU magnetic pulse speed measurement channel
Output Circuit Trip relay output (28V DC, 7A)
Communication Dual-channel 100Mbps IONet Ethernet
Operating Temperature -30℃ ~ +65℃
Humidity 5%~95% Non-condensing
Protection Rating IP20 (Rack Mounting)
Dimensions Height 14.3cm × Width 23.1cm, Weight 0.45kg
Redundant Architecture Supports single-card, tri-mode redundant TMR configuration
Certifications UL, CE, ATEX Zone 2 explosion-proof (Ex nA IIC T4 Gc)
MTBF ≈ 410,000 hours, long-term power plant design
Accompanying Manual GEH-6721L Mark VIe I/O Hardware Manual
IV. Panel Indicator Light Definitions (Quick Reference for On-Site Inspection)
RUN: Always on during normal module operation; off = card failure / no power supply
WDOG: Watchdog fault light; on = program crash, hardware malfunction
OSPD: Overspeed alarm light; always on when overspeed threshold is triggered
ESTP: Emergency trip status light; remains on after unit tripping
SYNC: Synchronization interlock status (interlocking function only, no adjustment)
ATN: Communication fault alarm; illuminates when single/dual network disconnection
Dual network port LINK/ACT: Flashing during network connection and data interaction
V. Terminal and Interface Layout
Right panel: Dual RJ45 Ethernet ports (IONet redundant communication), grounding bolt
Bottom terminal interface: High-density DB connector; external connections:
MPU speed probe 3 signal sets
External tripping input hard contact
Trip relay power output circuit
Back panel: Mark VIe standard rack hot-swappable gold fingers, 24V power supply + system bus from the backplane
VI. Typical Application Scenarios
9FA/7FA heavy-duty gas turbines and thermal power steam turbines: Mark VIe control cabinet with triple overspeed protection redundancy channels;
Combined cycle power plants, self-owned power plants, and chemical turbine compressor units: backup safety tripping;
TMR triple redundancy safety system as standard, each protection rack is equipped with 1-3 PPROS1B for independent overspeed backup.
VII. Supply and Maintenance Key Points
Lifecycle: Original manufacturer has discontinued production; new original, refurbished, and salvaged spare parts are available on the market.
Replacement Compatibility: Physically compatible with the IS220PPRAS1B in the same rack, but logical functions are not directly interchangeable. After replacement, overspeed settings must be reinstalled and MPU speed channels must be calibrated.
Common Fault Points
Loose network port connectors; excessive 24V power supply voltage drop on the backplane.
MPU speed measurement channel disconnection; probe gap misalignment causing false overspeed.
Internal trip relay contacts oxidation, resulting in a broken tripping circuit.
Supporting Software: GE ControlST, used for installing protection logic, reading tripping history, and channel calibration.
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