IS220PRTDH1B GE Mark VIe RTD Input Module

IS220PRTDH1B RTD Input Module – GE Mark VIe Series

Technical Specifications

• Brand: GE Energy
• Model: IS220PRTDH1B
• Category: RTD Input Module
• Series: Mark VIe
• Part Number: IS220PRTDH1B
• Product Type: RTD Input Pack
• Manufacturer: General Electric
• Power Supply: 0.24 A at 28 VDC
• RTD Input Range: 0 to 4.2 VDC at 10 mA
• Inputs: Up to 8 RTD channels
• Excitation Current: 10 mA DC multiplexed, not continuous
• Sample Rate: 4 times per second in normal mode
• Fast Sample Rate: 25 times per second in fast mode
• Ethernet Ports: 2 RJ-45 ports
• Ethernet Speed: Auto-negotiates 10 MB/s and 100 MB/s
• Duplex Mode: Auto-negotiates half-duplex and full-duplex
• Operating Temperature: -30 to +65 °C
• Base PCB Coating: Conformal coating
• Isolation: Galvanic isolation provided by the PRTD
• Maximum Cable Resistance: 15 ohms two-way
• Maximum RTD Distance: 300 meters (984 feet) from cabinet
• Compatible Terminal Boards: IS200TRTDH2D, IS200SRTDH1A, IS200SRTDH2A
• Accessory Total: 3 boards
• Product Origin: United States (USA)
• Availability: In stock

Functional Overview

• The IS220PRTDH1B interfaces one or two I/O Ethernet networks with an RTD input terminal board.
• It contains a shared processor board and an acquisition board for RTD input functions.
• The module connects to the terminal board through a DC-37 pin connector.
• A three-pin power input supplies the pack with 28 VDC at 0.24 A.
• Dual RJ-45 Ethernet connectors handle output and network communication.
• LED indicator lights provide visual diagnostics for easy troubleshooting.
• The pack supports simplex operation with one I/O pack and one or two network connections.
• Both Ethernet paths stay active when two network inputs are used.
• A failure on one network does not affect module operation and the working network reports the fault.
• This design offers greater fault tolerance than a traditional hot-backup system.

Analog Input Hardware and Measurement Performance

• The RTD terminal board provides eight three-wire RTD inputs to the PRTD input board.
• Each RTD can be grounded or ungrounded for flexible installation.
• The pack supplies a 10 mA DC multiplexed excitation current to each RTD.
• The A/D converter samples each signal and excitation current four times per second in normal mode.
• In fast mode, the sampling rate increases to 25 times per second.
• The time sample interval relates to the power system frequency for stable readings.
• Galvanic isolation in the RTD input circuit comes from the PRTD module.
• This isolation requires transient protection changes on the terminal board.
• The TRTDH1D board offers filtering compatible with the standard scan rate.
• The TRTDH2D board provides less filtering for the fast scan rate.
• An incompatibility report appears if the PRTD mounts on an earlier TRTD board.
• No physical damage occurs when this incompatibility is reported.

Processor and Ethernet Features

• The processor board links to an acquisition board dedicated to the I/O pack function.
• A soft-start circuit raises the voltage available on the processor board when power applies.
• Local power supplies turn on in sequence and the processor reset disables.
• After self-test routines, the processor loads application code from flash memory.
• The application code reads board ID information to confirm a correct match.
• The processor checks the application code, acquisition board, and terminal board.
• When the match is good, the processor tries to establish Ethernet communications.
• Ethernet initialization begins with a network address request using DHCP.
• The address request uses the terminal board’s unique identification.
• After Ethernet initialization, the processor programs on-board logic and runs the application.
• The acquisition board then begins operation under processor control.
• The processor application code contains all logic for one or two Ethernet inputs.

FAQ

• Q: What is the input range of the IS220PRTDH1B?
  A: The RTD input range is 0 to 4.2 VDC at 10 mA.
• Q: How many RTD inputs can this module accept?
  A: It accepts up to eight RTD inputs.
• Q: What is the operating temperature range?
  A: The module operates from -30 to +65 °C.
• Q: Which terminal boards work with this module?
  A: It works with IS200TRTDH2D, IS200SRTDH1A, and IS200SRTDH2A.
• Q: What is the normal sample rate?
  A: The normal sample rate is 4 times per second.
• Q: What is the fast sample rate?
  A: The fast sample rate is 25 times per second.
• Q: How far can the RTDs be from the cabinet?
  A: The RTDs can be up to 300 meters (984 feet) away.
• Q: Does this module support dual or TMR operation?
  A: No, the PRTD pack supports simplex operation only.

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