The IS230PCAAH1A is an analog input I/O module used in the GE Mark VIe control system.

 It is used to collect the on-site analog signals and transmit them to the controller, such as the Mark VIe or Mark VIE system. 

It features high precision, industrial-grade anti-interference capability and system redundancy support, and is widely used in GE's gas turbines, 

steam turbines, compressors and power plant automation systems. Its input signal types include current input (4-20mA, 0-20mA) and voltage input (±5V, ±10V), 

depending on the configuration of the I/O Terminal Board. 

The number of channels of this module is usually 10 to 20 analog input channels, and it also depends on the type of terminal board connected.

 It communicates with the controller via the IONet network via redundant Ethernet and is powered by the backup power supply of the I/O Terminal Board, 

typically 28 VDC

SPECIFICATIONS

Part Number: IS230PCAAH1B
Manufacturer: General Electric
Series: Mark VIe
Product Type: I/O Module
Number of Inputs: 25
Number of Outputs: 4-20 mA
Analog 0-10 V DC Inputs: ±0.50%
LVDT Excitation Monitor Input: ±1.00%
Servo Driver Output: ±3.50%
Power Supply Input Voltage: 28Vdc±5%
Size: 33.02cm high x17.8 cm wide
Technology: Surface-Mount
Operating Temperature: -30 to 65oC
Availability: In Stock
Product of Origin: U.S.A
Manual: GEH-6721L

FUNCTIONAL DESCRIPTION

IS230PCAAH1B is a Core Analog I/O Module manufactured and designed by General Electric as part of the Mark VIe Series used in distributed control systems. A sizable amount of the analog signal I/O needed to run a gas turbine is provided by the Core Analog (PCAA) module and related Core Analog (TCAS and TCAT) terminal board. Thermocouple, 4-20 mA current loop, seismic, linear variable differential transformer (LVDT) excitation and inputs, pulse rate, and servo coil outputs are all provided by PCAA and TCAT. In simplex, dual, and TMR systems, PCAA is applicable. To one, two, or three linked PCAA modules, a single TCAT terminal board fans signal inputs. In addition to the terminals on PCAA and TCAT, a nearby JGPA board also has shield ground and 24 V field power connectors.

OPERATION:

The PCAA module is a physical assembly made up of four different circuit boards. Because it is challenging to narrow down a failure to a specific board, the module is thought of as the least replaceable component. Individual boards cannot be replaced with the module.

Fig 2: PCAA Board Relationship Diagram

Each Mark VIe Ethernet I/O pack or module shares a processing board. It has the following in it:

• A quick processor with RAM and flash memory is number one.
• Two plugs for entirely independent 10/100 Ethernet ports
• Hardware reset and watchdog timer circuit
• A sensor for internal temperature
• LEDs that indicate the status
• The capacity to read IDs on other boards and electronic identification
• An input power connector with a current limiter and a gentle start

• Local power supplies, which also include monitoring and sequencing

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