IS230SAIIH2A - Simplex Isolated Analog Input/Output Terminal Board

TECHNICAL SPECIFICATIONS:

Part Number: IS230SAIIH2A
Manufacturer: General Electric
Series: Speedtronic Mark VIe
Input span, transmitters: 1 - 5 V dc
Functional Acronym: SAII
Product Type: Isolated Analog Input/Output Terminal Board
Hardware Revision: REV A
Number of Channels: 12
Maximum lead resistance: 15 Ohms
Outputs: 24 V dc
Redundancy Configuration: Simplex (S-Type)
I/O Pack Interface: One high-density DC-62 pin connector matching PAIC pack
Terminal Blocks: Two rows of 24-point pluggable Euro-style blocks
Analog Inputs: 10 isolation channels (supporting 0-20 mA or 4-20 mA)
Analog Outputs: 2 channels (supporting 0-20 mA or 4-20 mA)
Loop Power Voltage: 24 V DC nominal tracking
Circuit Board Protection: High-grade Conformal PCB Coating
Technology: Surface Mount
Ambient Operating Temperature: -30°C to +65°C (-22°F to +149°F)
Repair Lead Time: 3–5 Business Days
Size: 15.9 cm high x 17.8 cm wide (6.25 in x 7.0 in)
Availability: In Stock / Repair & Exchange Available
Country of Origin: United States
Manual: GEH-6721_Vol_II V

FUNCTIONAL DESCRIPTION ABOUT IS230SAIIH2A:

The IS230SAIIH2A is a Simplex Isolated Analog Input/Output Terminal Board designed and manufactured by General Electric for the Speedtronic Mark VIe control platform. The Simplex Analog Input (SAII) terminal board is a compact analog input terminal board that accepts 10 analog inputs, offers two analog outputs, and connects to the PAIC. The I/O pack plugs into the D-type connector and communicates with the controller over Ethernet. The 10 analog inputs accommodate 2-wire, 3-wire, 4-wire, or externally powered transmitters. Each analog input feature point isolates when configured for externally powered devices. Each analog input has an isolator in the circuit with a rating of 1500 V rms. The two analog outputs are 0-20 mA, but one can be jumper-configured to 0-200 mA current when used with a PAICH2. High-density Euro-block type terminal blocks are used. An on-board ID chip identifies the SAII to the PAIC for system diagnostic purposes.

ANALOG INPUT DATA ISOLATION & CONDITIONING:

The primary hardware layer manages up to 10 isolated analog input channels configured to interface with current transmitters. The board processes standard 0-20 mA and 4-20 mA current loops from field instrumentation, such as pressure transducers, flow gauges, and temperature transmitters. Every input path passes through an independent isolation block that dampens common-mode noise and breaks ground loops, optimizing the accuracy of analog-to-digital conversions performed when the signals migrate through the 62-pin connection interface to the PAIC I/O pack.

TRANSMITTER LOOP DRIVE & INTERFACING:

To sustain remote transmitter operation, the board distributes integrated 24 V DC loop excitation power across the termination points. The electrical power distribution traces are equipped with localized overcurrent protection, containing field wiring short-circuits to the affected loop without dropping the voltage rails of adjacent instrumentation paths. This arrangement preserves continuous signal integrity for the remaining operational channels during field faults.

INSTALLATION:

The SAII, plus a plastic insulator, mounts on a sheet metal carrier that then mounts on a DIN-rail. Optionally, the SAII plus insulator mounts on a sheet metal assembly and then bolts directly to a cabinet. There are two types of Euro-block terminal blocks available as follows:

• SAIIH1 has a permanently mounted terminal block with 48 terminals
• SAIIH2 has a right-angle header accepting a range of commercially available pluggable terminal blocks, with a total of 48 terminals

OPERATION:

24 V dc power is available on the terminal board for all the transmitters (transducers). There is a choice of current or voltage inputs using jumpers. One of the two analog output circuits is 4-20 mA, and the other can be jumper-configured for 4-20 mA or 0-200 mA. There is only one PAIC connection, so the terminal board cannot be used for TMR applications as with TBAI.

WHY PARTNER WITH WORLD OF CONTROLS:

World of Controls provides the industry's most dependable logistics and technical infrastructure for critical turbine control networks. We maintain an extensive inventory of genuine OEM replacement parts for GE Distributed control setups, minimizing operational downtime during emergency outages. Every item, from certified unused surplus to fully rebuilt industrial components, is subjected to strict simulation profiling in our advanced electronics lab and is supplied with a comprehensive product warranty. Our global engineering support network operates 24/7 to deliver troubleshooting advice, component replacement guidance, and component testing evaluations. Contact the WOC sales team directly via phone or email for current pricing, hardware availability, or repair quotes.

FREQUENTLY ASKED QUESTIONS:

What is the GE IS230SAIIH2A?

The IS230SAIIH2A is a Simplex Isolated Analog Input/Output Terminal Board designed for the Mark VIe control system. It provides a compact field termination module that collects isolated analog input transmitter signals and routes analog commands to external modulating devices.

What is the exact terminal point capacity of the terminal boards?

The board features a total termination capacity of 48 connection points. These points are structurally organized into two rows of 24-point pluggable Euro-style box connector strips. This modular setup allows field technicians to disconnect entire wiring blocks quickly during maintenance without altering individual field wires.

How many independent overspeed pickup channels are built into the board hardware?

There are 0 overspeed channels built into this specific board layout because it is dedicated strictly to analog current loops. Rotational frequency tracking and mechanical overspeed calculations are instead delegated to turbine protection boards like the STUR series. This module handles process inputs and output control currents.

What is the continuous voltage input range for the potential transformer synchronization circuits?

There are 0 potential transformer tracking elements configured on this module, as it does not participate in generator-to-grid auto-synchronization loops. The hardware interface handles 4-20 mA current signaling loops rather than raw high-voltage AC phase waveforms. Synchronization metrics are routed through dedicated turbine protection boards.

How many pins are configured on the primary and auxiliary cable connection headers?

The board incorporates a main 62-pin right-angle connector and contains 0 auxiliary 37-pin headers. The single 62-pin cable interface is engineered to dock a companion PAIC Analog I/O pack directly over the terminal footprint. This direct arrangement channels digitized millivolt values over the internal IONet fabric without relying on secondary cabling.