Overview
Specification
| Category | Specification |
|---|---|
| Number of Channels | 8 fully isolated differential input channels |
| Compatible Controller | GE PACSystems RX3i, firmware 5.5 or higher |
| Configuration Software | PAC Machine Edition 5.8 or later |
| Input Types | RTD (Pt385, Pt391.6, Ni618, Ni672, NiFe518, Cu426) and resistance inputs |
| RTD Input Ranges | Pt385 & Pt391.6: 50–1000 ΩNi618: 100–1000 ΩNi672: 120 ΩNiFe518: 604 ΩCu426: 10–100 Ω |
| Resistance Input Ranges | 250 Ω, 500 Ω, 1000 Ω, 2000 Ω, 3000 Ω, 4000 Ω |
| Temperature Measurement | -200 °C to +850 °C (depending on RTD type) |
| Excitation Current | 0.238–1.654 mA per input (varies by type) |
| Input Configuration | 2-, 3-, or 4-wire selectable per channel |
| Input Data Format | 32-bit IEEE floating point or 16-bit integer |
| Sampling Rate | 120 ms update per channel |
| Accuracy (RTD) | ±0.3 °C to ±1.0 °C at +25 °C (depending on RTD type) |
| Accuracy (Resistance) | ±0.25 Ω to ±1.7 Ω at +25 °C |
| Repeatability | 0.05% of span over 30 seconds |
| Crosstalk | ≥70 dB at 120 ms update rate |
| Common Mode Rejection | 90–100 dB depending on filter and wiring |
| Filter Options | Programmable notch filters: 2.3 Hz to 28 Hz per channel |
| Alarm Features | High/Low alarm, user-defined dead band, open-circuit detection |
| Diagnostics | Watchdog, RAM Fail, Flash Fail |
| LED Indicators | Power, module status, channel fault LEDs |
| Isolation | Channel-to-channel isolation, field-to-backplane isolation |
| Environmental Protection | Conformal coating option available (IC695ALG508CA) for harsh environments |
| Hot-Swap Capability | Supports removal or insertion under power |
| Power Consumption | 200 mW nominal, 300 mW maximum per module |
| Dimensions | Standard RX3i I/O module form factor |
| Operating Temperature | 0 °C to 60 °C standard; -40 °C to +70 °C for CA version |
| Storage Temperature | -40 °C to +85 °C |
| Humidity | 5%–95% non-condensing |
| EMC Compliance | Meets IEC 61131-2 and relevant industrial EMC standards |
FAQ
Q1: Can this module measure both RTDs and resistances?
A1: Yes, each channel supports multiple RTD types and resistance inputs up to 4 kΩ.
Q2: Does it support 2-, 3-, and 4-wire RTDs?
A2: Yes, all channels can be configured for 2-, 3-, or 4-wire RTDs for accurate readings.
Q3: Can the module be replaced without powering down the system?
A3: Yes, it supports hot-swap removal and insertion under power.
Q4: What software is required for configuration?
A4: PAC Machine Edition 5.8 or later is required for full module configuration.
