Overview
The Emerson 5X00622G01 is a 16-channel RTD input electronics module for the Ovation distributed control system. It processes resistance signals from resistance temperature detectors (RTDs) and converts them into digital measurement data for controller processing. The module uses 14-bit conversion and supports six resistance ranges, with open-wire, overrange, and controller-access watchdog indications for channel and communication diagnostics.
RTD Input and Measurement
The 5X00622G01 accepts resistance-based temperature measurement signals across 16 input channels. It supports six resistance ranges from 31.25 ohm to 2000 ohm, allowing the input assembly to accommodate different RTD measurement configurations.
Furthermore, the module uses a 14-bit analog-to-digital conversion process and samples channels at 50 ms in both 50 Hz and 60 Hz operating modes. Its specified measurement accuracy is +/-0.10% of span at 99.7% confidence. The maximum allowable lead resistance is 100 ohm per lead.
Diagnostics and Electrical Protection
The module provides diagnostic indications for open-wire conditions and overrange measurements. These indications help maintenance personnel distinguish input wiring faults from measurements outside the configured range. In addition, a controller-access watchdog monitors bus communication, with a specified timeout of 1.5 s +/-20%.
The electrical withstand ratings provide isolation between input channels and between channels and logic. Both ratings specify +/-1000 V DC for 1 minute, while normal-mode rejection reaches 60 dB typical at 50 Hz or 60 Hz +/-1 Hz.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 5X00622G01 |
| Brand | Emerson |
| Product Type | 16-Channel RTD Input Electronics Module |
| System | Ovation DCS |
| RTD Input Channels | 16 |
| Channel Sampling Interval | 50 ms at 50 Hz and 60 Hz |
| Resistance Ranges | 31.25, 125, 250, 500, 1000, 2000 ohm |
| Conversion Resolution | 14 bits |
| Power Supply Voltage | 24 VDC nominal |
| Minimum Supply Voltage | 21 VDC |
| Maximum Supply Voltage | 25 VDC |
| Typical Power Consumption | 3.87 W |
| Measurement Accuracy | +/-0.10% of span at 99.7% confidence |
| Maximum Lead Resistance | 100 ohm per lead |
| Channel-to-Channel Withstand | +/-1000 V DC peak for 1 minute |
| Channel-to-Logic Withstand | +/-1000 V DC for 1 minute |
| Normal-Mode Rejection | 60 dB typical at 50 Hz or 60 Hz +/-1 Hz |
| Bus Watchdog Timeout | 1.5 s +/-20% |
| Diagnostic Indications | Open-wire, overrange, controller-access watchdog |
| Operating Temperature | 0 to 60 deg C |
| Storage Temperature | -40 to +85 deg C |
| Relative Humidity | 0 to 95%, non-condensing |
| Stock | 1 unit |
Frequently Asked Questions
Q: How many RTD input channels does the Emerson 5X00622G01 support?
A: The 5X00622G01 supports 16 RTD input channels. It processes resistance signals for temperature measurement and uses 14-bit conversion.
Q: Which resistance ranges does the 5X00622G01 support?
A: The module supports six resistance ranges: 31.25, 125, 250, 500, 1000, and 2000 ohm. The required range should match the connected RTD measurement configuration.
Q: What diagnostic functions does this RTD input module provide?
A: It provides open-wire and overrange indications, along with a controller-access watchdog. These functions help identify input wiring problems, out-of-range measurements, and bus communication issues.
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