GE IS220PRTDH1A PRTD Resistance Temperature Detector Input I/O Pack

Description

Hardware & Electrical Specifications

‑ Model：IS220PRTDH1A ‑ Part Number：IS220PRTDH1A ‑ Module Type：PRTD RTD Temperature Input I/O Pack ‑ Mounting：Installed in Mark VIe I/O pack rack ‑ Power supply：24 VDC backplane power, operating range 22.8‑28.6 VDC ‑ Input channels：8 galvanic‑isolated RTD input channels; supports Pt100, Pt1000, Cu100 sensors; software selectable 2‑wire / 3‑wire / 4‑wire wiring mode ‑ Measurement range：‑200 ℃ ~ +850 ℃, resolution 0.01 ℃, typical accuracy ±0.1 ℃ at 0 ℃ ‑ Sampling mode：4 Hz normal scan (50/60 Hz power‑line noise rejection), optional 25 Hz fast scan mode ‑ Communication interfaces：  • Dual redundant 100 Mbps RJ45 IONet Ethernet ports for controller communication  • DC‑37‑pin connector for connection to matching RTD terminal boards ‑ Compatible terminal boards：SRTDH1A, TRTDH1A series RTD terminal boards ‑ PCB treatment：Conformal coated for dust‑moisture‑corrosion resistance ‑ On‑board protection：ESD protection, surge suppression, 2500 VAC galvanic isolation between field side and control logic side; open‑circuit / short‑circuit detection for RTD sensor loops, built‑in hardware self‑diagnosis circuit ‑ Compatibility note：Cannot run standalone; must match Mark VIe I/O pack rack, main controller and corresponding SRTD/TRTD terminal boards; full temperature‑loop simulation test mandatory after replacement.

Environmental Specifications

‑ Operating temperature：‑30 ℃ ~ +65 ℃ ‑ Storage temperature：‑40 ℃ ~ +85 ℃ ‑ Relative humidity：5%‑95% non‑condensing ‑ Installation location：Indoor turbine control cabinet ‑ EMC compliance：IEC 61000‑6‑2 ‑ Certifications：CE, UL Class I Div 2 hazardous location certification

Mechanical Data

‑ Weight：approx 0.38 kgExcellent … ‑ Dimension：Standard Mark VIe I/O pack module form‑factor ‑ Handling note：ESD‑sensitive PCB; precision analog temperature acquisition circuit, anti‑static wrist‑strap mandatory during handling ‑ Terminal tightening torque：0.6‑1.0 N·m

Main Functions

1. Acquire resistance signal from field RTD temperature sensors such as bearing RTD, stator winding RTD and process temperature sensors.
2. Execute excitation current drive, signal conditioning, A/D conversion and resistance‑to‑temperature linearization calculation.
3. Detect RTD sensor open‑circuit, short‑circuit and wiring faults, upload fault diagnostic information.
4. Transmit real‑time temperature measurement values and channel fault alarms to Mark VIe main controller via redundant IONet bus.
5. Continuous self‑diagnosis for module hardware, analog circuit and communication link, report module failure alarm status.
6. LED status indication:   ‑ Green LED：PWR / Module power supply normal   ‑ Yellow LED：LINK / IONet communication activity indicator   ‑ Red LED：ATTN / module fault or sensor‑loop abnormality alarm

Installation & Wiring Requirements

1. Cut off I/O pack rack power supply before replacement. Hot‑swap is forbidden. Strict anti‑static protection when handling PCB board.
2. Insert module into designated slot of I/O pack rack, lock module latch to ensure reliable backplane contact.
3. RTD sensor wiring strictly follow GE Speedtronic Mark VIe hardware manual; use shielded twisted‑pair cable for temperature signal, separate from high‑power cables, connect shielding to dedicated protective ground terminal.
4. Complete protective grounding according to GE system specification.
5. After replacement: verify IONet communication, configure sensor type and wiring mode, perform temperature‑loop calibration test and channel fault simulation test.
6. Replacement note: For TMR triple‑redundant system application, hardware consistency and firmware‑version matching shall be verified; full temperature‑loop simulation test mandatory before unit put‑into‑service.