GE IS220YDOAS1A Safety Discrete Output I/O Pack
Delivery time 3 days
Product origin New/used
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The IS220YDOAS1A is a safety-grade discrete output I/O module from the GE Mark V
The IS220YDOAS1A is a safety-grade discrete output I/O module from the GE Mark VIeS series. It is specifically designed for safety interlocking and emergency shutdown control of critical equipment such as gas turbines and steam turbines, meeting SIL (Safety Integrity Level) requirements. It is a core output component of the Mark VIeS safety control system.
I. Model and Series Positioning
Model: IS220YDOAS1A
Series: Mark VIeS (Speedtronic Safety Control System)
Type: Safety Discrete Output I/O Pack
Manual: GEH-6721
II. Core Functions
Safety-grade Relay Output: Provides 12 independent safety relay outputs for driving critical actuators such as solenoid valves, trip coils, and safety indicator lights.
Dual-channel Ethernet Communication: Two I/O Ethernet ports support redundant networks, ensuring reliable transmission of control commands.
Status Feedback and Diagnostics: Built-in 12-channel relay/coil monitoring and 3-channel fuse status feedback for real-time monitoring of output circuit health. Sequence of Events (SOE): Millisecond-level event timestamps accurately record the timing of output actions, facilitating fault tracing.
Safety Redundancy Architecture: Supports TMR (Triple Module Redundancy) configuration; single module failure does not affect system safety.
Self-Diagnostic Function: Power-on self-test (RAM, Flash, processor, network port), continuous online diagnostics, and triggers safety alarms upon anomalies.
III. Key Technical Parameters
Output Channels: 12 safety relay outputs
Response Time: Approx. 6ms (command to output action)
Communication Interface: 2 × 10/100 Mbps Ethernet (I/O network)
Physical Interface: DC-37 pin connector (connects to output terminal block)
Status Indicators: 18 LEDs (channel status, network, fault, power)
Operating Temperature: -30°C ～ +65°C
Dimensions: Approx. 3.25" × 1.65" × 4.78"
Weight: Approx. 1.5 lbs (0.68 kg)
Software Compatibility: ControlST V06.01+, ToolboxST
IV. System Architecture and Accessories
Accessories: Safety-grade discrete output terminal block (provides relay wiring, fuse, and field circuit interfaces)
Redundancy Configuration:
Single Redundancy (Simplex): 1 module
Triple Redundancy (TMR): 3 modules, achieving 2-out-of-3 voting to meet the highest safety level
Host System: Mark VIeS controller, Speedtronic safety control platform
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