The GE IS220PRTDH1B, also cataloged as the IS220PRTDH1B RTD Input Module, operates as a dedicated hardware component for multi-channel resistance thermal measurement processing within GE Mark VIe platforms. The unit digitizes field resistance signals across 10 independent channels directly to the dual IONet Ethernet backbone, interfacing Platinum, Copper, and Nickel sensors to the central controller.
| Parameter | Specification |
|---|---|
| Model | IS220PRTDH1B |
| Brand | GE |
| Origin | USA |
| Weight | 0.9 kg |
| Dimensions | 225 mm x 167 mm x 55 mm |
| Operating Temp | -30 to 65 deg C |
| Power Consumption | 12 W typical (18 to 32 VDC range, 28 VDC nominal) |
| Channel Count | 10 independent RTD channels |
| Supported RTDs | Pt 100 ohm, Pt 200 ohm, Pt 500 ohm, Pt 1000 ohm; Cu 10 ohm; Ni 120 ohm |
| A/D Resolution | 16-bit |
| Measurement Accuracy | +/-0.1% of full scale |
| Scan Rate | 10 ms per channel |
| Galvanic Isolation | 1500 VDC (field inputs to system logic) |
| Noise Rejection | >120 dB @ 50/60 Hz common mode; >60 dB normal mode |
| Communication | Dual Ethernet connectivity to Mark VIe IONet |
The IS220PRTDH1B executes high-resolution 16-bit A/D conversion at a 10 ms scan rate per channel, maintaining rapid backplane bus communication velocity across the dual 100 Mbps IONet infrastructure. Firmware flash compatibility ensures synchronized parameter scaling and automatic line resistance compensation across Platinum, Nickel, and Copper sensor profiles. Embedded 1500 VDC galvanic isolation combined with >120 dB common-mode noise suppression prevents signal degradation and ground potential shifts from compromising system control loops.
Q: Can the IS220PRTDH1B module be replaced while the system rack is powered?
A: Yes, the I/O pack supports live insertion and removal (hot-swapping) on the matching terminal board without disrupting adjacent system hardware or network communications.
Q: What mechanisms prevent line-resistance variations from affecting measurement accuracy?
A: The onboard measurement circuit utilizes internal lead-wire compensation processing across 3-wire and 4-wire RTD field configurations to neutralize wiring distance resistance errors.
Q: How does the pack communicate thermal data to the Mark VIe controllers?
A: The unit processes analog sensor signals locally and transmits digital engineering values across redundant 100 Mbps IONet Ethernet connections.
Mount the IS220PRTDH1B I/O pack directly onto the designated Mark VIe terminal board, securing the physical retention screws to ensure reliable ground contact. Route all RTD field wiring through shielded twisted-pair cables, maintaining strict separation from high-voltage power conduits to limit electromagnetic interference. Connect all cable shields to the terminal board grounding bus. Verify that both primary and secondary IONet Ethernet cables seat fully into their respective RJ45 ports before applying 28 VDC input power.
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