IS200PHRAH1A - HART Enabled Analog I/O Module

SPECIFICATIONS:

Part Number: IS200PHRAH1A
Manufacturer: General Electric
Series: Mark VIe
Product Type: HART Enabled Analog I/O Module
Number of channels: 12
Input span: 4-20 mA
Technology: Surface Mount
Input Converter Resolution: 16-bit
Output Converter: 14-bit
Common Mode Voltage Range: ±5 V
Maximum Lead Resistance: 15Ω
Analog output current: 0-20 mA
Operating temperature: -30 to 65 °C
Size: 8.26 cm high x 4.19 cm
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States
Manual: GEH-6721D

FUNCTIONAL DESCRIPTION:

IS200PHRAH1A is a HART Enabled Analog I/O Module manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Control Systems. An electrical link between one or two I/O Ethernet networks and an analog input/output terminal board is provided by the Highway Addressable Remote Transducer (HART) Enabled Analog Input/Output (PHRA) pack. This pack includes an acquisition board tailored to the analog input function as well as a processor board that is shared by all Mark VIe distributed I/O packs.

The first eight analog inputs of the pack can be set up as 5 V inputs or 4-20 mA current loop inputs, and the pack can handle up to 10 analog inputs in total. It is possible to set up the final two inputs as 4-20 mA or 1 mA current inputs. On the terminal board are the load termination resistors for the inputs of the current loop, and the PHRA senses the voltage across these resistors. Two outputs for 4-20 mA current loops are supported by the PHRA as well. The PHRA may also relay HART messages between field devices equipped with HART and an asset management system when operating in 4-20 mA mode (AMS). Any inputs or outputs are available for connecting these HART-capable field devices.

INSTALLATION:

• Directly connect one PHRA I/O pack to the connector on the terminal board.
• Use the threaded studs next to the Ethernet ports to mechanically secure the pack. The studs slip into a mounting bracket made for the particular style of the terminal board.
• It is important to position the bracket such that the DC-62 pin connector between the terminal board and the pack is not subjected to a straight-angle force. Only one adjustment should be necessary during the lifespan of the product.
• Depending on the setup of the machine, connect either one or two Ethernet wires. Either port will allow the pack to function. When using dual connections, it is customary to link ENET1 to the network connected to the R controller.
• Connect the connector on the side of the pack to a power source to power the battery. Because the I/O pack has an inherent soft-start feature that regulates current inrush on power application, it is not essential to turn off the power before plugging the cable in.
• If necessary, set up the I/O pack using the ToolboxST program. See also the section on auto-reconfiguration.

OPERATION:

The processor board connects to an acquisition board specific to the I/O pack function. Upon application of input power, the soft-start circuit ramps up the voltage available on the processor board. The local power supplies are sequenced, and the processor reset is removed. The processor completes self-test routines and then loads application code specific to the I/O pack type from flash memory. The application code reads board ID information to ensure the correct matching of the application code, acquisition board, and terminal board. With a good match, the processor attempts to establish Ethernet communications, starting with the request of a network address. The address request uses the industry standard dynamic host configuration protocol (DHCP) and the unique identification read from the terminal board. After Ethernet initialization, the processor programs the on-board logic, runs the application and enables the acquisition board to begin operation. The processor board is common to all Mark VIe Ethernet I/O packs or modules. It contains the following:

• High-speed processor with RAM and flash memory
• Two fully independent 10/100 Ethernet ports with connectors
• Hardware watchdog timer and reset circuit
• Internal temperature sensor
• Status-indication LEDs
• Electronic ID and the ability to read IDs on other boards
• Input power connector with soft start/current limiter
• Local power supplies, including sequencing and monitoring

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 terminal board provides a 250 burden resistor when configured for current inputs yielding a 5 V signal at 20 mA. These analog input signals are first passed through a second-order, passive, low-pass filter network with poles at 12.5 Hz and 48.3 Hz. Voltage signal feedback from the analog output circuits and calibration voltages are also sensed by the PHRA analog input section.

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FREQUENTLY ASKED QUESTIONS:

What is the HART Enabled Analog I/O Module and its primary function?

The HART Enabled Analog I/O Module is an advanced interface component designed for integration into GE Distributed Control Systems. It facilitates seamless communication between analog input/output terminal boards and one or two I/O Ethernet networks.

What are the key specifications of the module?

This module features 12 channels with an input span of 4-20 mA and an analog output current range of 0-20 mA. It operates using surface mount technology and provides a 16-bit input converter resolution and a 14-bit output converter.

What types of analog inputs and outputs does the module support?

The module supports 10 analog inputs, with the first eight configurable as either 5 V inputs or 4-20 mA current loop inputs. The final two channels can be used as either 4-20 mA or 1 mA current inputs.