Overview
The GE IS220PRTDH1A, also cataloged as the IS220PRTDH1A Resistance Temperature Input Module, operates as a dedicated hardware component for RTD signal acquisition within the GE Mark VIe control system. The module receives resistance temperature detector signals, performs analog-to-digital conversion, and transfers measured temperature data through the I/O pack interface.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IS220PRTDH1A |
| Brand | General Electric (GE) |
| Product Type | Resistance Temperature Input Modules |
| Series | Mark VIe Speedtronic |
| Origin | USA |
| Weight | 0.35 kg |
| Dimensions | 6 x 12.8 x 8.3 cm |
| Power Consumption | Supplied by 28 VDC nominal input |
| Input Type | RTD resistance temperature input |
| RTD Compatibility | PT100 (IEC-751), PT1000 |
| Number of RTD Channels | 8 isolated RTD input channels per I/O pack |
| Extended Channel Capacity | Up to 16 RTD inputs with compatible TRTD terminal boards |
| Wiring Configuration | 2-wire, 3-wire, and 4-wire RTD connection |
| Excitation Current | 1 mA |
| A/D Converter Resolution | 14-bit |
| Channel-to-Channel Isolation | 250 V AC/DC |
| Overvoltage Protection | +/-30 V continuous |
| Maximum Lead Resistance | 15 ohm |
| Power Supply Voltage | 28 VDC nominal |
| Tariff Code | 8537101190 |
GE Industrial Control Interface Characteristics
The IS220PRTDH1A operates as an RTD acquisition interface within the GE Mark VIe I/O architecture. It converts resistance variations from temperature sensors into digital measurement values through a 14-bit A/D converter. In addition, the module supports individual channel configuration for 2-wire, 3-wire, and 4-wire RTD connections, allowing compensation of lead resistance effects during temperature measurement.
Furthermore, the module incorporates channel-to-channel isolation rated at 250 V AC/DC. This isolation structure separates individual measurement circuits and reduces interference between field wiring channels. The module also provides 1 mA excitation current for connected RTD sensors and accepts PT100 and PT1000 detector inputs.
The Mark VIe platform uses modular I/O packs for signal processing and communication. Therefore, the IS220PRTDH1A works with compatible terminal boards to expand RTD input capacity and maintain signal routing between field devices and controller hardware.
Frequently Asked Questions
Q: What RTD wiring methods does the IS220PRTDH1A support?
A: The IS220PRTDH1A supports 2-wire, 3-wire, and 4-wire RTD connections. Each channel can be configured according to the connected sensor wiring method.
Q: How does the module process RTD temperature signals?
A: The module applies a 1 mA excitation current to the RTD element, measures resistance changes, and converts the analog signal through a 14-bit A/D converter.
Q: Does the IS220PRTDH1A provide electrical isolation between channels?
A: Yes. The module provides channel-to-channel isolation rated at 250 V AC/DC and includes continuous overvoltage protection up to +/-30 V.
Field Installation Guidelines
- Install the IS220PRTDH1A within the designated GE Mark VIe I/O pack assembly according to system hardware documentation.
- Use shielded RTD wiring where required by the site electrical environment to reduce electromagnetic interference.
- Connect RTD leads according to the selected 2-wire, 3-wire, or 4-wire configuration before system commissioning.
- Separate RTD signal cables from high-voltage power cables and high-current switching conductors.
- Verify terminal board compatibility before connecting external RTD sensors.
- Confirm sensor polarity, wiring continuity, and insulation condition before applying the 28 VDC module supply.
- Maintain proper grounding practices for cable shields and cabinet assemblies according to plant electrical standards.
