The IS220YTURS1A belongs to GE's Mark VIeS safety-certified platform. This turbine protection I/O module plugs into TTUR or TRPA terminal boards. You will find it managing critical turbine functions like speed monitoring, flame detection, and trip relay outputs. Furthermore, the pack supports Modbus communication for seamless integration. Its robust design makes it suitable for demanding power generation environments.
Part Number: IS220YTURS1A
Manufacturer: General Electric (USA)
Series: Mark VIeS
Product Type: Primary Turbine Protection I/O Module
Power Requirements: Power to contacts is 125 V dc. Input voltage accepts 120V AC with an operating range of 90V to 265V AC. Output voltage ranges from 5V to 24V DC.
Channels & Signals: The module features 6 channels. It handles four speed sensor inputs, bus and generator voltage inputs, shaft voltage and current signals, eight flame sensors, and outputs to the main breaker.
Communication Protocols: The IS220YTURS1A supports Modbus for easy integration with plant control networks.
Environmental Ratings: Operating temperature spans 0°C to 60°C. However, the ambient temperature rating from original documentation is -30°C to +65°C. Relative humidity tolerates 5% to 95% non-condensing.
Physical Dimensions: Size measures 3.4 x 6.37 inches (86 x 162 mm). Weight is 2.00 lbs (0.91 kg).
Mounting: The IS220YTURS1A mounts on a DIN-rail for quick installation.
The IS220YTURS1A serves as a primary turbine protection I/O pack within the Mark VIeS safety system. Its main job is to interface between one or two IONets and a primary protection terminal board.
Speed Sensor Inputs: The pack provides an interface for up to four passive, magnetic speed inputs. Frequency range spans from 2 to 20,000 Hz. This wide range supports various turbine speed monitoring applications.
Flame Detection: Voltage pulses above 2.5 V generate a logic high. The pulse rate gets measured in a counter over a configurable time (multiple of 40 ms). Importantly, the safe state is the presence of flame. Therefore, this module is not intended for applications where detected flame is the unsafe state.
ETD Interface: The IS220YTURS1A contains relays for interfacing with electrical trip devices (ETD). This feature enables safe turbine shutdown during fault conditions.
Trip Relay Outputs: When using TRPA terminal boards, the system provides two solid-state primary trip relays. These relays ensure rapid disconnection during overspeed or other dangerous events.
The IS220YTURS1A works with several terminal boards from GE. Each board offers different safety I/O types:
| Terminal Board | Safety I/O Type |
|---|---|
| TTURS1C | Primary turbine protection |
| TRPAS1A | 4 speed inputs |
| TRPAS2A | 8 flame inputs |
| TRPGS1B | 3 monitored trip relay outputs |
| TRPGS2B | 1 E-stop |
As an alternative to TTUR, three IS220YTURS1A packs can plug directly into a TRPA terminal board. In this arrangement, TRPA holds four speed inputs per pack. However, this setup does not support bus voltage, generator voltage, shaft signals, flame sensors, or main breaker output. Consider your application requirements carefully before choosing the TRPA configuration.
Proper testing ensures reliable turbine protection. Follow these guidelines when validating the IS220YTURS1A:
Speed Input Testing: Vary input signals and compare them to the reference signal. The system should track changes accurately within specified tolerances.
Flame Detector Testing: Observe the presence of flame using a Geiger-Muller detector. The IS220YTURS1A should register flame presence correctly.
E-Stop Testing: Actuate the emergency stop input and observe the primary trip relays dropping out. This test confirms proper safety circuit operation.
Fault Tolerance Testing: Remove power or communications from one I/O pack in a hardware fault-tolerant channel. The system must maintain the required output without interruption.
Before each test case, verify that there are no diagnostic faults on the IS220YTURS1A under test. Any expected diagnostic faults must be detailed in the acceptance criteria. Additional unexpected faults require full explanation before test acceptance.
Follow these steps to install the IS220YTURS1A correctly:
First, power down the entire rack system. Next, mount the compatible terminal board (TTUR or TRPA) onto the DIN rail. Then, slide the IS220YTURS1A pack onto the terminal board connectors. Press firmly until the locking mechanism engages fully. Finally, connect your field wiring to the terminal board according to the pinout diagram in manual GEH-6721P.
For best results, use shielded cables for speed sensor and flame detector inputs. Ground the shield only at the panel end. Keep signal wires separated from high-power AC cables to prevent electrical noise interference.
First, the IS220YTURS1A offers certified safety performance for turbine protection applications. Second, it handles multiple critical functions in one compact pack. Third, Modbus support simplifies integration with existing plant systems. Finally, GE's Mark VIeS platform is trusted worldwide in power generation facilities.
1 x IS220YTURS1A Primary Turbine Protection I/O Module
1 x Anti-static protective bag
1 x Installation quick guide (pinout reference)
2 x DIN-rail mounting clips
Note: Terminal boards, cables, certificates, and warranty documents are not included.
All orders ship via premium global carriers. Your IS220YTURS1A will be sent using FedEx, UPS, or DHL. Most in-stock items leave our warehouse within 24 hours. You will receive a tracking number by email once the carrier picks up your parcel.
1. Is the IS220YTURS1A compatible with the original Mark VI system?
No, the IS220YTURS1A is designed specifically for Mark VIe and Mark VIeS systems. It will not work with the older Mark V or Mark VI platforms. Always verify your system version before purchasing.
2. What happens if a speed sensor fails during turbine operation?
The IS220YTURS1A provides redundant speed inputs for fault tolerance. If one sensor fails, the remaining sensors continue to provide protection. The system will generate a diagnostic alert for maintenance.
3. Can I use the IS220YTURS1A with TRPA for flame detection?
No, the TRPA configuration does not support flame sensor inputs. For flame detection, you must use the TTUR terminal board. The IS220YTURS1A requires TTUR to access all eight flame input channels.
4. How do I configure the flame detection time base on this module?
You configure the flame detection time base using GE's ToolboxST software. The time base is a multiple of 40 ms. Navigate to the IS220YTURS1A configuration panel and adjust the parameter marked (CFG) in the manual.
5. What is the maximum cable length for speed sensor inputs?
For passive magnetic speed sensors, keep cable lengths under 300 meters (985 feet). Longer runs may introduce signal attenuation or noise. Use twisted-pair shielded cable for the IS220YTURS1A speed inputs to maintain signal integrity.
| Brand Name | General Electric |
| Model No. | IS220YTURS1A |
| Product Type | Primary Turbine Protection I/O Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
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