GE IS420YDIAS1B Mark VIeS Discrete Contact Input Module
Manufacturer: GE Fanuc
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Part Number: IS420YDIAS1B
Condition：New with Original Package
Product Type: Discrete Input Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
GE IS420YDIAS1B Mark VIeS Discrete Contact Input Module
The IS420YDIAS1B is a discrete contact input I/O pack manufactured by General Electric for the Mark VIeS Functional Safety System. Designated by the YDIA functional code, this module acquires and monitors up to 24 discrete contact signals from field devices, interfacing them directly with system safety logic via dual RJ-45 Ethernet ports.
Signal Conditioning and Safety Isolation
To preserve signal integrity within industrial environments, the module uses optocouplers and isolated power circuitry to provide 1500 V optical isolation between field inputs and system logic. Input channels feature a 4 ms hardware filter time constant to attenuate electrical noise and transient interference. It supports dry contact signals across 24 V DC, 48 V DC, or 125 V DC voltage levels depending on the connected terminal board.
Real-Time Diagnostics and Architecture
Equipped with a common processor board and dedicated discrete-input acquisition circuitry, the module continuously performs power-up self-tests, input excitation voltage tracking, and input response verification. Sequence of Events (SOE) recording operates at a 1 ms sampling resolution for precise fault analysis. The unit connects via a DC-37 terminal board interface, supporting simplex, dual, and Triple Modular Redundancy (TMR) architectures.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | IS420YDIAS1B |
| Brand | GE |
| Product Series | Mark VIeS Functional Safety System |
| Functional Designation | YDIA |
| Product Type | Discrete Contact Input I/O Pack |
| Number of Input Channels | 24 discrete contact inputs |
| Input Signal Type | Dry contact / discrete signals |
| Supported Input Voltage Levels | 24 V DC, 48 V DC, or 125 V DC (terminal-board dependent) |
| Input Isolation | 1500 V optical isolation |
| Hardware Input Filter | 4 ms time constant |
| Sequence of Events (SOE) | Supported (1 ms sampling resolution) |
| Communication Interfaces | Dual RJ-45 Ethernet ports |
| Terminal Board Interface | DC-37 connector |
| Power Supply | 24/28 V DC I/O Pack power |
| Maximum Power Consumption | 6.8 W |
| Redundancy Support | Simplex, dual, TMR |
| Mounting | Mounts directly on compatible Mark VIeS terminal board |
| Operating Temperature | -40 deg C to +70 deg C (-40 deg F to +158 deg F) |
| Storage Temperature | -40 deg C to +85 deg C (-40 deg F to +185 deg F) |
Frequently Asked Questions
Q: What input voltages does the IS420YDIAS1B module accept?
A: The module accepts dry contact input signals at 24 V DC, 48 V DC, or 125 V DC, depending on the specific terminal board configured with the unit.
Q: What redundancy configurations are supported by this I/O pack?
A: The IS420YDIAS1B supports simplex, dual, and Triple Modular Redundancy (TMR) topologies when paired with compatible terminal board hardware and system configurations.