Digital guide
You are here:
GE IS420YAICS1B
Product Name: GE Mark VIeS Analog Input I/O Pack (YAIC Series)
Introduction: The IS420YAICS1B is a standalone Ethernet-type analog signal acquisition I/O pack belonging to the GE Speedtronic Mark VIe / Mark VIeS gas/steam turbine control system. It interfaces field analog signals from the terminal board and communicates bidirectionally with the controller BPPC main board, used for high-precision acquisition of process analog quantities such as pressure, temperature, vibration, and valve position.
Detailed content
Model Code Interpretation:
- IS420: Mark VIe new-generation I/O Pack module series
- YAIC: Analog Input Circuit (analog input processing unit)
- S: Standard Ethernet communication version
- 1B: Second-generation hardware revision (initial IS420YAICS1A cannot be mixed with 1B on the same terminal board)
Technical Specifications & Performance Parameters:
- Analog Input Channels: 10 isolated channels
- 2 universal current channels: ±1 mA, 4–20 mA transmitter support
- 8 universal voltage/current channels: ±5 V, ±10 V, 4–20 mA
- ADC Resolution: 16-bit high-speed ADC
- Measurement Accuracy: ±0.1% FS
- Channel-to-Ground Isolation: 500 VAC
- Communication: Dual RJ45 10/100M industrial Ethernet, redundant links with automatic failover
- Field Interface: DB37 high-density rear terminal connector to IS410STAISxx series analog terminal board
- Power: Supplied by Mark VIe rack backplane, typical consumption 5.3 W
- Dimensions: 82.6 mm H × 41.9 mm W × 121.6 mm D
- Operating Temperature: -40 °C to +70 °C (-40 to 158 °F)
- Storage Temperature: -40 °C to +85 °C
- Protection Grade: IP20 (cabinet-only installation)
- Compliance: GEH-6855 gas turbine control specification, full IEC 61000 industrial EMC
- Firmware Requirement: V05.01 or later; ControlST V06.01 or later
- Diagnostics: Panel LEDs indicate link communication, module run, ADC fault, and channel alarm; built-in hardware break detection for transmitter open/short circuits uploads alarms in real time
Functional Features: Dual-network redundant Ethernet communication with automatic failover; superior noise immunity with 60 dB CMR at 60 Hz; software-selectable filter cutoff frequencies (0.75, 1.5, 3, 6, or 12 Hz).
Application Scenarios: High-precision closed-loop control of steam turbines; process analog acquisition for gas/steam turbine units. Compatible with TMR configurations using three identical IS420YAICS1B packs on the same T-type terminal board.
Installation & Usage Notes: Install in Mark VIe rack. Ensure firmware and ControlST versions meet minimum requirements. Do not mix 1A and 1B revisions on the same terminal board. IP20 rating requires installation inside a control cabinet.
