Quick Overview
The GE IS220YTURS1A is a Primary Turbine Protection I/O Module. GE designed it for the Mark VIeS series. This module protects gas, steam, and wind turbines. It connects one or two IONets to a protection terminal board. Consequently, it keeps your turbine safe and running.
Key Features
6 channels for flexible I/O connections
Handles 4 speed sensor inputs (2 to 20,000 Hz)
Supports 8 flame sensors
Provides bus and generator voltage inputs
Includes main breaker output
Uses Modbus communication
DIN-rail mounting for easy installation
Safety-certified for primary turbine protection
Technical Specifications
Brand: General Electric (GE)
Model Number: IS220YTURS1A
Product Type: Primary Turbine Protection I/O Module
Series: Mark VIeS
Number of Channels: 6
Power to Contacts: 125 V dc
Input Voltage: 120V AC
Output Voltage: 5V to 24V DC
Operating Voltage Range: 90V to 265V AC
Signal Feedback: Analog 4-20mA
Communication: Modbus
Operating Temperature: 0°C to 60°C
Storage Temperature: -30°C to 65°C
Mounting: DIN-Rail
Weight: 2.00 lbs
Size: 3.4 in x 6.37 inch
Country of Origin: USA
Manual: GEH-6721P
Part Number Breakdown (IS220YTURS1A)
IS220 → Special assembly I/O pack (Mark VIe series)
YTUR → Functional abbreviation (Turbine I/O Pack)
S → Series grouping
1 → Conformal coating style
A → First functional revision
Compatible Terminal Boards
TTURS1C – Primary turbine protection type
TRPAS1A – 4 speed inputs
TRPAS2A – 8 flame inputs
TRPGS1B – 3 monitored trip relay outputs
TRPGS2B – 1 E-stop input
Safety & Protection Features
Speed monitoring – Up to 4 passive magnetic sensors (2 to 20,000 Hz)
Flame detection – Pulses above 2.5V create logic high
ETD TRPx relays – Interface for electrical trip devices
Two mounting options – TTUR board or three YTUR packs on TRPA board
Installation Guide
Mount on a standard DIN-rail.
Plug the module into a TTUR or TRPA terminal board.
Connect the IONet cables firmly.
Apply power between 90V and 265V AC.
Keep ambient temperature below 60°C.
Leave space for airflow around the module.
Testing & Maintenance Tips
Vary speed inputs and compare to reference signals.
Observe flame presence to test flame detectors.
Activate E-Stop and check PTRs drop out.
Remove power from one I/O pack to test fault tolerance.
Always clear diagnostics faults before each test.
Power Requirements
Minimum voltage: 27.4 V dc
Nominal voltage: 28.0 V dc
Maximum voltage: 28.6 V dc
Warranty & Shipping
Warranty: 12 months from delivery date.
Shipping carriers: FedEx, UPS, DHL.
Fast dispatch within 2 business days.
Typical Applications
Gas turbine primary protection
Steam turbine overspeed control
Wind turbine safety systems
Generator voltage and shaft current monitoring
Retrofit of older turbine control panels
Frequently Asked Questions (FAQ)
Q1: Can I use the IS220YTURS1A with a Mark V system?
No. This module works only with Mark VIeS series systems.
Q2: What happens if one I/O pack loses power?
The system keeps the required output. This is hardware fault-tolerant design.
Q3: How do I know if the flame detection is working?
Apply a voltage pulse above 2.5V. The logic goes high. Then measure the counter over 40 ms intervals.
Q4: What is the safe state for flame detection?
The safe state is flame presence. Do not use this module where no flame is the safe state.
Q5: Do you offer bulk pricing for multiple units?
Yes. Please contact us for volume discounts.
Buying Guide (Experience-based)
Check your terminal board type before ordering.
Need 4 speed inputs? Use TRPAS1A board.
Need 8 flame inputs? Use TRPAS2A board.
For trip relays, choose TRPGS1B or TRPGS2B.
Verify your system is Mark VIeS, not Mark VI.
Ask for the latest revision A for full performance.
Warranty covers 12 months. Keep your purchase receipt.
Choose FedEx for fast air delivery. UPS for ground. DHL for international.
Order spare modules to reduce downtime.
Contact Information Inquiries
For technical support or sales, message us on WhatsApp:
+86 158 8020 0923
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