IS220PHRAH1A, REV F - HART Enabled Analog I/O Module

SPECIFICATIONS:

Part Number: IS220PHRAH1A
Revision: REV F
Manufacturer: General Electric
Series: Mark VIe Speedtronic
Functional Designation: HART Analog Input/Output Pack (PHRA)
Number of channels: 12 channels per terminal board (10 AI, 2 AO)
Input span: 4–20 mA dc, ±5 V dc, (Inputs 1-8)
Input converter resolution: 16-bit analog-to-digital converter
Scan time: Normal scan 5 ms (200 Hz)
Measurement accuracy: Better than 0.1%
Noise suppression on inputs: 3 Hz, 6 Hz, 12 Hz
Common mode rejection: 60 dB at 60 Hz
Common mode voltage range: ±5 V
Output converter: 14-bit D/A
Output load: 800 Ω for 4–20 mA output
Size: 8.26 cm high x 4.19 cm
Technology: Surface-mount
Temperature: -30 to 65°C
Availability: In Stock
Manual: GEH-6721_Vol_II V

FUNCTIONAL DESCRIPTION:

IS220PHRAH1A, REV F is an HART Enabled Analog I/O Module manufactured and designed by General Electric as part of the Mark VIe Series used in Distributed Turbine Control Systems. The Highway Addressable Remote Transducer (HART) Enabled Analog I/O pack (PHRA) provides the electrical interface between one or two I/O Ethernet networks and an analog input/output terminal board. The PHRA contains a BPPx processor board common to the distributed I/O packs and an acquisition board specific to the analog input function. The I/O pack is capable of handling up to 10 analog inputs, the first eight of which can be configured as ±5 V inputs, or 4-20 mA current loop inputs. The last two inputs can be configured as ±1 mA or 4-20 mA current inputs. The load termination resistors for current loop inputs are located on the terminal board, and voltage is sensed across these resistors by the PHRA. The PHRA also includes support for two 4-20 mA current loop outputs. In addition, in 4-20 mA mode, the PHRA can relay HART messages between HART-enabled field devices and an Asset Management System (AMS). These HART-enabled field devices can be connected through any of the inputs or outputs. Input to the I/O pack is through dual RJ-45 Ethernet connectors and a 3-pin power input. Output is through a DC-62 pin connector that connects directly with the associated terminal board connector. Visual diagnostics are provided through indicator LEDs.

INSTALLATION:

• Securely mount the desired terminal board.
• Directly plug one PHRA I/O pack into the terminal board connector.
• Mechanically secure the I/O pack using the threaded studs adjacent to the Ethernet ports. The studs slide into a mounting bracket specific to the terminal board type. The bracket location should be adjusted such that there is no right-angle force applied to the DC-62 pin connector between the I/O pack and the terminal board. The adjustment should only be required once in the service life of the product.
• Plug in one or two Ethernet cables, depending on the system configuration. The pack will operate over either port. If dual connections are used, the standard practice is to connect
• ENET1 to the network associated with the R controller.
• Apply power to the pack by plugging in the connector on the side of the pack. It is not necessary to remove power from the cable before plugging it in because the I/O pack has inherent soft-start capability that controls current inrush on power application.

ANALOG INPUT HARDWARE:

The PHRA accepts input voltage signals from the terminal board for all 10 input channels. The analog input section consists of an analog multiplexer block, several gain and scaling selections, and a 16-bit analog-to-digital converter (DAC). The inputs can be individually configured as 5V scale signals, depending on the input configuration. The terminal board provides a 250 Ohms burden resistor when configured for current inputs, yielding a 5 V signal at 20mA. These analog input signals are first passed through a second-order, passive, low-pass filter network with poles at 12.5Hz and 48.3Hz. Voltage signal feedback from the analog output circuits and calibration voltages are also sensed by the PHRA analog input section.

ANALOG OUTPUT:

The PHRA includes two 4-20 mA analog outputs capable of 18 V compliance. A 14-bit DAC commands a current reference to the current regulator loop in the PHRA that senses current both in the PHRA pack and on the terminal board. Analog output status feedback for each output includes:

• Current reference voltage
• Individual current (output current sourced from within the PHRA)
• Total current (as sensed from the terminal board)

HART HARDWARE:

All inputs and outputs on the PHRA are HART-enabled. This means there are 12 individual HART channels, with 10 channels for the analog inputs and two channels for the outputs. These 12 channels are served by a pair of HART modems so that each modem is associated with six HART channels. Inputs 1 through 5 and output 1 are multiplexed down to HART modem A. Inputs 6 through 10 and output 2 are multiplexed down to HART modem B. The number of active channels a modem is serving greatly impacts the HART data update time. If one of the six channels served by a HART modem is active, the modem is dedicated to a single field device and, under normal operating conditions, ToolboxST data associated with this device is updated roughly once per second. If all six channels are in use, roughly eight seconds will pass between updates.

WHY BUY FROM WOC:

World of Controls is a specialized global authority in the lifecycle extension of GE Mark VIe ecosystems, providing the IS220PHRAH1A, REV F in both UNUSED and REBUILT conditions to eliminate operational latency. Our quality-assurance protocol involves extensive multi-channel HART signal injection testing, precision DAC/ADC feedback mapping, and full dual IONet link stress evaluations. By partnering with WOC, you secure hardware for peak performance, reinforced by 24/7 technical consultation and accelerated global logistics.

FREQUENTLY ASKED QUESTIONS:

What is GE IS220PHRAH1A, REV F?

The IS220PHRAH1A, REV F, is a HART-enabled Analog Input/Output Pack (PHRA) within General Electric's Mark VIe Speedtronic line. It interfaces with 10 analog field inputs and drives 2 analog outputs, while simultaneously processing bidirectional digital HART communication data for asset management systems.

How many analog output channels does the PHRA pack have, and what is their capability?

It features 2 analog output channels operating across a 4–20 mA range with an 18 V maximum compliance voltage, making it capable of driving precise current-based control signals over a wide array of field actuators.

How does the output loop tracking mechanism function within this unit?

The internal current regulator loop measures output performance in three distinct areas: the DAC target command voltage, the individual internal current sourced inside the pack, and the total loop current at the terminal board interface for advanced fault protection.

What type of field input combinations can be configured on the first eight channels?

Channels 1 through 8 are highly versatile and software-configurable to accept either standard 5 VDC voltage signals or 4–20 mA current loops.