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- Exciter Main I/O Board
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Product: IS200EMIOH1A
Brand / Series / Model Classification
| Item | Description |
|---|---|
| Brand | GE (General Electric) / GE Fanuc |
| Series / Product Line | EX2100 Excitation Control System (also used in Mark VI turbine / exciter control, main I/O / EMIO board) |
| Model | IS200EMIOH1A — Exciter Main I/O Board (EMIO) |
Product Description
The IS200EMIOH1A is the main input/output board (I/O board) for the exciter control system. It is a core module that interfaces with multiple terminal boards (such as ECTB, EACF, EXTB, EPCT) to collect and drive signals in high‑reliability exciter / turbine control systems. It handles contact inputs, PT (potential transformer) and CT (current transformer) signals, relay drivers (both pilot trip and output relays), and gate pulse signals via the backplane to other modules (e.g. ESEL, EGPA). It is typically a double‑height, single‑slot VME‑style board, designed to be robust, redundant, and maintainable.
Technical Parameters / Specifications
These parameters are compiled from multiple sources; some may be approximate; final values should be confirmed with manufacturer datasheet.
| Parameter | Value |
|---|---|
| Operating Voltage (Input) | 24 V DC |
| Output Voltage | ≈ 5 V DC (logic / driver supply) |
| Operating Temperature Range | −40 °C to +85 °C |
| Dimensions | approx. 9.25 in × 6.5 in (≈ 235 mm × 165 mm) |
| Weight | approx. 2 lbs (≈ 0.91 kg) |
| Board Type | Double‑height, single‑slot VME / backplane module |
| Main I/O Interfaces | Inputs/outputs from terminal boards: contact inputs, PT/CT signals, relay drivers, output relays; gate‑pulse outputs to ESEL, then to EGPA |
| LED Indicators | 2 LEDs on front panel: Power, Status / Operating status |
| Power Consumption | approx. 5–10 W (depending on configuration and load) |
| Environmental / Reliability | Designed for industrial / turbine environment; supports redundancy / fault‑tolerant control; robust against interference; good ambient environment tolerance |
Applications
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Used in excitation control systems in turbine / generator control (gas turbines, steam turbines, combined cycle plants)
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Main I/O board collecting signals (PT / CT), contact inputs, and driving relays; essential for controlling the exciter system’s field / de‑excitation functions
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Employed in control systems that require high reliability, redundancy, fast response, and accurate signal routing
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Applicable in power plants, electrical generation / utility grid, heavy industry, where precise control of generator excitation and protection is needed
Advantages / Key Strengths
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Centralized Signal Hub: Handles many crucial I/O signals from multiple terminal boards, reducing wiring complexity and centralizing control.
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Fail‑safe / Redundancy Ready: Designed for use in systems with redundancy (master/slave controllers or triple processor redundancy), enhancing reliability.
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Robust Design: VME / backplane module built for high durability; tolerates broad operating temperature; robust against industrial electrical noise.
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Efficient Footprint: Despite supporting many I/O functions, occupies only one slot, double height; efficient use of panel / rack space.
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Quick Diagnostics: Front‑panel LEDs for power and status help in field diagnostics; known board type, well documented; makes maintenance more straightforward.
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Seamless Integration: Integration with EX2100 / Mark VI systems; standard preservation of form‑factor and backplane interfaces; well‑understood signal flows (through ECTB, EACF, EXTB, EPCT, ESEL, EGPA, etc.).
Brand & Series
-
Brand: General Electric / GE Fanuc
-
Control System Family: EX2100 Excitation Control System (also used in Mark VI / Exciter control environments)
-
The EMIO board is one of the primary I/O boards in this series.
Related / Same‑Series or Relevant Models
Here are 5 models in the same EX2100 / exciter control / turbine control I/O board family or related modules, with key parameters for comparison.
| Model | Function / Use | Key Parameters |
|---|---|---|
| IS200EGDMH1A | Field Ground Detector Module (EGDM) – detects ground / leakage faults in the excitation field circuits | Size ~9″ × 6″ × 1.5″; Weight ~0.467 kg; measures AC/DC field ground; fast response (<10 ms); works with EXAM module; temp range ‑30 to +65 °C |
| IS200EXAMH1A | Attenuator Module (EXAM) – measures and attenuates voltage from the ground path to feed EGDM for ground detection | Input voltage ranges; compatible with EGDM; rack / backplane slot; environmental rating similar; behaves as analog front‑end for ground path voltage |
| IS200DSPXH1DBD | DSP / Controller module – presumably handling control logic, communications, signal processing in EX2100 systems | Higher power consumption; interfaces to EMIO, EGPA, etc.; size double height; weight about 0.8‑1.2 kg depending on variant; temperature tolerant |
| IS200EGPAG1B | Parameter / Alarm / Gauge Board – monitors parameters, generates alarms, status indicators; works with EMIO and other I/O | Several analog and digital I/O channels; LED indicators; driver’s outputs; board size compatible; weight approx ~1 kg; temp endurance typical industrial range |
| IS200EISBH1A | Bus Receiver / Interface Board – for communication with system backplane or I/O bus, receiving signals from terminal boards or other subsystems | Communication ports; signal conditioning; board‑level installation; environmental specifications similar; used wherever communication / signal bus is needed |
Popular Models from Same Brand (GE / GE Fanuc) Outside Exactly this Board
Here are 5 well‑known / widely used models from GE / GE Fanuc, useful for comparison or alternative / complementary modules.
| Model | Function / Use | Key Parameters |
|---|---|---|
| IC200MDL650 | Discrete Input Module for PLC systems: handling many on/off inputs | 32 discrete inputs; 24 V DC input; module weight ~0.3‑0.6 kg; standard PLC module size; industrial temp rating |
| IC693CPU315 | PLC CPU Controller Module – main logic processor, program execution, communication | Multiple network ports; memory for user program; scan rate; weight ~1‑1.2 kg; includes power supply for CPU; standard industrial operating temp range |
| IS220PDIOH1A | Packaged I/O module with local processing; high channel count I/O for distributed control | Many digital/analog input and outputs; Ethernet or other protocol connectivity; size larger module; weight ~1‑2 kg; robust construction |
| IS215PMVPH1A | Turbine Control Card / Monitoring Module – monitors turbine parameters, sensors, etc. | High sensor input count; analog input resolution; integrated diagnostics; board module size; weight approx ~1 kg; temp range industrial |
| DS200FSAAG2ABA | Analog Signal Input / Output Module – for high precision analog sensor signals (temperature, pressure, etc.) | Analog channels; resolution (12‑16 bit); input range; isolation; size and weight typical analog module; environmental sealing as needed |
FAQ (10 Questions & Answers)
Here are ten commonly asked questions about IS200EMIOH1A, with straightforward, field‑practical answers.
QA1
Q: What is the board’s physical size and rack‑slot requirement?
A: It occupies a single slot, double‑height VME/backplane board. Physical dimensions are about 9.25 inches × 6.5 inches (≈ 235 mm × 165 mm) and weighs about 2 lbs (≈ 0.9 kg).
QA2
Q: What signals does the EMIO board manage?
A: It manages contact inputs, PT (voltage transformer) and CT (current transformer) signals, relay driver outputs (pilot trip relays, output relays), and it also sends gate pulses via the backplane to subsequent modules (e.g. ESEL, EGPA).
QA3
Q: What is the supply voltage required?
A: The input supply is nominally 24 V DC, which powers the board’s logic and driver circuits.
QA4
Q: What is the operating temperature range?
A: Typically, the board can operate from about −40 °C to +85 °C, depending on manufacturer / specific version, ensuring it can handle demanding industrial environments.
QA5
Q: How does the EMIO board interact with redundancy or multiple controllers?
A: In redundant or fault‑tolerant setups, multiple controllers / boards operate in parallel or in backup mode. EMIO receives and sends signals through the backplane, and its status is managed by master/slave or redundant processor structure. Any failure in one board can be voted out or substituted by another in a redundant configuration.
QA6
Q: What diagnostic indicators are available on the board?
A: There are typically two LEDs on the front panel: one for Power (to show whether the board is powered correctly) and another for Status (to show operating condition / fault / OK).
QA7
Q: How much power does it consume?
A: Power draw is moderate; approximately 5–10 W depending on signal load and function.
QA8
Q: What happens if a PT or CT input fails or is open circuit?
A: The EMIO board may detect abnormal signal levels, the control system may note the signal failure, and based on system configuration, may generate alarms, default to safe state, or disable certain functions, depending on logic in controller and redundancy.
QA9
Q: Is the board backwards compatible or replaceable without extensive re‑wiring?
A: Generally yes: since the board fits the standard backplane slot and is designed for the EX2100 / Mark VI system suite, its connectors and layout follow standard form factor; replacing a failed board often requires minimal rewiring as long as the other terminal boards and system are intact.
QA10
Q: What maintenance or handling precautions are needed?
A: Before handling: ensure power is off and backplane is de‑energized; use anti‑static precautions; ensure correct seating in slot; verify signal connectors and wiring are secure; check environmental conditions (temperature, humidity) are within specification; monitor LEDs after power‑up to verify correct operation.
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