GE IS200EDFFH2A IS200EDFFH2AAA | Printed Circuit Board

Core Function and System Role

The GE IS200EDFFH2A monitors DC feedback signals from field devices. Specifically, this board reads multiple 4-20 mA transmitter outputs. Moreover, it distributes loop power to each connected sensor. The IS200EDFFH2AAA variant includes individual channel filtering for noisy environments.

Technical Specifications Overview

This printed circuit board features eight independent analog input channels. Each channel accepts 4-20 mA signals from two-wire transmitters. Furthermore, the board provides 24 Vdc loop power for each input.

Parameter	Specification
Part Number	IS200EDFFH2A / IS200EDFFH2AAA
Type	Printed Circuit Board / Analog Input Module
Analog Inputs	8 Channels, 4-20 mA
Resolution	16 Bits (65536 Counts)
Accuracy	±0.2% of Span
Loop Power	24 Vdc ±10%, 25 mA per Channel
Input Impedance	250 Ω
Response Time	<50 ms
Channel Isolation	500 Vdc between Channels
Status Indicators	8 Green LEDs
Power Supply	24 Vdc ±15%
Connector Types	2 x 50-pin D-sub, 2 x Terminal Blocks
Dimensions (W x H x D)	195 x 115 x 28 mm
Weight	0.62 kg
Onboard Energy Storage	8 x 100 µF, 35V Capacitors

Connector Layout and Component Count

The board uses two terminal blocks for field wiring connections. For instance, block TB1 handles channels 1 through 4. Meanwhile, block TB2 manages channels 5 through 8. Two 50-pin D-sub connectors route digitized signals to the controller. The IS200EDFFH2AAA adds six filter capacitors for noise reduction.

Energy Storage and Signal Integrity

This printed circuit board includes local capacitance for stable loop power. Specifically, eight 100 µF capacitors filter the 24 Vdc supply. Therefore, the board provides clean power to field transmitters. Additionally, onboard LED indicators show each channel’s loop status. For example, a green LED illuminates when a valid 4-20 mA loop is active. An off LED indicates an open circuit or transmitter failure.

Diagnostic Features and Fault Detection

The board continuously checks each channel for open or shorted loops. Consequently, it detects transmitter failures within 100 milliseconds. Moreover, the GE IS200EDFFH2A IS200EDFFH2AAA includes loop current verification for each channel. This feature confirms that transmitters operate within the 4-20 mA range. An onboard status register reports all channel health to the main controller.

Maintenance and Hot Replacement

You can replace this printed circuit board without powering down the turbine. Thus, mean time to repair remains under ten minutes. The board stores no configuration data locally. Therefore, you simply install the replacement and resume normal DC feedback monitoring.

Industrial Applications

This printed circuit board works inside GE Mark VI control cabinets. For reliable GE analog input processing, the IS200EDFFH2A and IS200EDFFH2AAA deliver exceptional performance. They provide accurate 4-20 mA interfacing for steam and gas turbine pressure and flow transmitters.