IC695ALG106 Isolated Input Module PACSystem RX3i

Product Overview

The IC695ALG106 is a high-precision 6-channel isolated analog input module engineered for the PACSystem RX3i platform, originally manufactured by GE Intelligent Platforms (GE Fanuc) and currently produced under Emerson Automation. Designed for process architectures requiring high noise immunity, each channel of the IC695ALG106 is software-configurable for bipolar and unipolar voltage spans (±10V, 0–10V, ±5V, 0–5V, 1–5V) as well as current loops (0–20 mA, 4–20 mA, ±20 mA) without physical hardware jumper adjustments.

Featuring an onboard 16-bit analog-to-digital converter (ADC), the module updates all channels at a rapid 1 ms scan rate and formats process values into IEEE 32-bit floating-point or 16-bit integer registers in 32-bit fields. Operating in RX3i backplane environments with CPU firmware version 5.0 or later, it draws 230 mA @ 5 Vdc and 320 mA @ 3.3 Vdc from the rack, alongside an isolated external 24 Vdc supply requirement (500 mA max @ 19.2–30 Vdc). Configured seamlessly via Proficy Machine Edition (version 5.6 SP11 or later), it provides per-channel digital filtering from 8 Hz to 1000 Hz to optimize noise rejection against measurement latency.

Key Features and Benefits

• Individual Channel-to-Channel Isolation: Complete galvanic channel isolation prevents ground loops and crosstalk across mixed voltage/current loops.
• Flexible Signal Range Configuration: Per-point software setup for ±10V, 0–10V, ±5V, 0–5V, 1–5V, 0–20 mA, 4–20 mA, and ±20 mA.
• High-Resolution 16-Bit ADC Conversion: Delivers 0.1% baseline calibration accuracy at 25°C (0.2% over full temperature span).
• Selectable Digital Filtering Options: Independent 8 Hz, 12 Hz, 16 Hz, 40 Hz, 250 Hz, and 1000 Hz filter settings match process dynamics.
• Robust Fault Protection Circuitry: Continuous overvoltage protection up to ±35 Vdc and overcurrent protection up to ±35 mA.
• High-Speed 1 ms Scan Execution: Constant 1 ms analog updating independent of digital filter frequency selections.

Technical Specifications

Detailed mechanical, electrical, and operational parameters for the IC695ALG106 are structured below:

Target Equipment and Application Scenarios

• Precision pressure transmitter, flowmeter, and RTD/TC signal conditioning loop monitoring.
• Heavy industrial processing plants subject to severe ground potential variations between sensor points.
• Turbine control systems, power generation skids, and continuous chemical reactor automation.
• Upgrading legacy GE Fanuc Series 90-30 I/O racks to PACSystem RX3i universal backplanes.

Diagnostic Capabilities and Fault Analysis

The IC695ALG106 provides extensive hardware self-diagnostics transmitted directly to the RX3i CPU status tables. In 4–20 mA and 1–5V operational modes, open-circuit fault detection triggers within 1 second maximum, generating a channel-specific fault flag in the PAC software. Additionally, the module continuously monitors external 24 Vdc supply status, high/low range limits, and overrange conditions, enabling real-time maintenance alerts before process variable corruption occurs.

Global PLC Spare HUB's Insight & Field Experience

When engineering loop response times with the IC695ALG106, remember that while the internal multiplexer update rate is fixed at 1 ms, total step-response latency depends heavily on your selected digital filter cutoff frequency. Selecting an 8 Hz filter yields a settling time of 127 ms for maximum noise attenuation, whereas a 1000 Hz filter drops settling time to 0 ms for fast-acting closed-loop pressure or flow control.

Always verify that external 24 Vdc power applied to the module remains strictly within the 19.2 to 30 Vdc operating envelope under full 500 mA load conditions. Insufficient supply voltage under load can trigger false open-circuit diagnostic alarms or cause intermittent ADC conversion resets on current loop channels.

Compliance, Shipping, and Warranty Terms

• Package Contents: 1 x New original IC695ALG106 analog input module sealed in factory antistatic packaging.
• Warranty Protection: Covered by a comprehensive 12-month replacement warranty effective from invoice date.
• Global Logistics: Express dispatch within 24–48 hours via top-tier couriers including DHL, FedEx, and UPS.

Frequently Asked Questions (FAQ)

Question: How does changing the software digital filter setting impact channel conversion speed on this hardware?

Answer: The channel update scan remains locked at 1 ms regardless of filter choice, but digital filter selection alters signal settling time—from 127 ms at 8 Hz down to 0 ms at 1000 Hz.

Question: Can I wire both current transmitters and voltage transmitters simultaneously to different channels on the same card?

Answer: Yes, because every point is individually isolated and software-configurable, mixed voltage and current field devices can be wired side-by-side.

Question: What specific CPU firmware and programming software versions are required to run this RX3i module?

Answer: The CPU must run firmware Version 5.0 or higher, and configuration requires Proficy Machine Edition Version 5.6 SP11 or later.

Question: What continuous voltage and current overloads can the channel inputs withstand without permanent damage?

Answer: Input channels feature continuous overload protection rated up to ±35 Vdc for voltage ranges and ±35 mA for current loops.

Question: Is internal backplane power sufficient to energize field loops connected to this analog card?

Answer: No, the card requires an isolated external 24 Vdc power source (19.2 to 30 Vdc) drawing up to 500 mA to power the input conversion circuitry.

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