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Phone: +86 16626708626Description
3. Key Technical Specifications
| Parameter | Value |
| Number of Channels | 8 analog outputs |
| Output Voltage Ranges | ±10 VDC, 0 to 10 VDC |
| Output Current Ranges | 0 to 20 mA, 4 to 20 mA |
| Resolution | 15-bit (voltage mode) / 16-bit (current mode) |
| Update Rate | 8 ms (all 8 channels) |
| Absolute Accuracy | ±0.1% of full scale @ 25°C (voltage and current) |
| Isolation Rating | 250 VAC continuous / 1,500 VDC for 1 minute (field-to-logic) |
| External Power Requirement | 24 VDC nominal (20 to 30 VDC) |
| Backplane Current Draw | 360 mA @ 5 VDC (maximum) |
| Output Load Impedance | Voltage: > 2,000 Ω / Current: < 850 Ω @ 24 V (0 to 600 Ω default) |
| Status Indicators | 1 Green LED (Module OK), 1 Amber LED (External Power Present) |
| Terminal Block Type | Removable 20-terminal connector block (IC694TBB032 or IC694TBS032) |
4. Product Introduction & Supply Chain Strategy
The GE IC694ALG392 is a high-density, 16-bit analog output module designed to command variable speed drives, control valves, paper mill actuators, and positioners in PACSystems RX3i and late-generation Series 90-30 automation setups. Delivering 8 highly precise, isolated channels configurable for voltage (\pm10 VDC, 0 to 10 VDC) or current (0 to 20 mA, 4 to 20 mA) operation, this module updates all active outputs within an 8-millisecond cycle. Its high-resolution scaling profile ensures smooth, deterministic tracking for highly sensitive chemical, water treatment, and power processes.
From a procurement perspective, keeping this module in stock as a “New Surplus” asset is vital for protecting mature legacy systems. While the PACSystems RX3i platform continues to support active setups, securing unused spares through traditional channels can be slow and costly. Relying on refurbished analog cards is a significant risk; old operational amplifiers and digital-to-analog converters (DACs) are highly prone to calibration drift and thermal noise, which can cause field valves to hunting or jitter. Investing in verified New Surplus stock protects your Total Cost of Ownership (TCO) by ensuring immediate drop-in compatibility, pristine calibration, and zero run-time wear.
- IC694ALG392
- IC694ALG392
5. Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Turn off all main power sources feeding the PLC chassis and the external 24 VDC field power loop.
- Wear an ESD-grounded wrist strap connected to the clean metal surface of the control cabinet.
- Document or back up the current configuration hardware parameters in Proficy Machine Edition.
Stage 2: Removal
- Loosen the retaining screws on the removable terminal block (IC694TBB032) on the front of the module.
- Swing the pre-wired terminal block away from the module body without disconnecting the field wiring.
- Pinch the upper and lower plastic release tabs on the card housing and pull the module straight out of the slot along the guide rails.
Stage 3: Installation (Clone & Seat)
- Inspect the rear edge connector pins on the new IC693ALG392/IC694ALG392 to ensure they are straight and debris-free.
- Slide the module into its designated slot in the RX3i Universal Backplane (or 90-30 main/expansion rack).
- Apply firm, even pressure until the plastic tabs click securely into place.
- Align and push the pre-wired terminal block back onto the front of the card, then tighten the securing screws.
Stage 4: Power-On & Testing
- Restore main line voltage to the PLC rack and turn on the external 24 VDC field power supply.
- Verify the MODULE OK LED turns solid green and the EXT PWR LED lights up amber. If the OK LED flashes, verify the backplane seating or check for configuration errors in your software.
- Use a high-quality multimeter in series with the current loops to verify that analog command signals (4 to 20 mA) scale correctly when forced from your programming environment.
6. Firmware/Software Versions & Upgrade Notes
- Software Tool Compatibility: The IC694ALG392 is configured using Proficy Machine Edition (version 5.0 or later). It is not supported by legacy Logicmaster 90 or VersaPro.
- CPU Compatibility: When installed in a PACSystems RX3i backplane, the system CPU should be running firmware version 3.0 or higher to ensure full feature compatibility and accurate diagnostic reporting.
- Hardware Suffixes: The module is directly backward-compatible with older, equivalent IC693-series analog cards (such as the IC693ALG392). The IC694 model features a revised internal design that improves thermal dissipation and provides superior immunity to high-frequency electromagnetic interference (EMI).
7. Frequently Asked Questions (FAQ)
- Q: Is this IC694ALG392 module completely brand new, or is it a refurbished unit?
- A: This is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. These cards are unused, zero-runtime units sourced from surplus capital projects or factory spares reserves. Each module is structurally inspected and repackaged in ESD-safe packaging before leaving our facility.
- Q: Why should I choose a New Surplus unit when refurbished ones are cheaper?
- A: Our pricing reflects the cost of securing genuine New Surplus inventory globally. It may be 20-30% higher than a refurbished gamble, but it is substantially less than OEM list prices, and it buys you 100% peace of mind. Refurbished analog cards often suffer from drift in their digital-to-analog converters (DACs) due to heat aging. Buying New Surplus ensures long-term calibration accuracy and reliability.
- Q: Can I configure some channels for voltage and others for current on the same module?
- A: Yes. The IC694ALG392 allows you to configure each of its 8 channels independently. You can run voltage loops (e.g., 0 to 10 VDC) on some channels while running standard current loops (e.g., 4 to 20 mA) on the remaining channels, all within the same physical module.
- Q: What happens if the external 24 VDC loop power supply fails?
- A: If external 24 VDC power is lost or drops below acceptable operating thresholds, the amber EXT PWR LED on the front of the module will turn off, and the card will report an “External Power Failure” fault to the CPU. The analog outputs will automatically drop to their configured default states (such as 0 mA or lower limit).
- Q: Is this IC694-series module compatible with standard Series 90-30 PLC backplanes?
- A: Yes, in most cases. While the IC694 series was designed primarily for the newer PACSystems RX3i platform, the IC694ALG392 can be installed in standard late-generation Series 90-30 backplanes. However, you must use modern programming software (Proficy Machine Edition) to configure the hardware slot mapping.
- Q: What kind of warranty coverage is provided with this module?
- A: This module comes with our standard, comprehensive 1-year replacement warranty. If you encounter any structural or functional issues within 12 months, we will immediately provide a replacement unit to minimize your operational downtime.
