Emerson C695ALG628 (commonly cataloged as IC695ALG628) – PACSystems RX3i Analog I/O Module for Industrial Control

From my experience with PACSystems RX3i installations, the C695ALG628 designation is typically used for an Emerson/GE analog I/O module in the RX3i family (most distributors list it as IC695ALG628). It’s designed for multi-channel analog signal handling in control panels where stable, low-noise measurements and long lifecycle support really matter. If you’re standardizing on RX3i racks, this module slots straight into the backplane, giving you clean integration with existing CPUs, power supplies, and networking cards.

Order Placement Process and Guarantees

Key Features

• RX3i Backplane Integration – Installs directly into PACSystems RX3i racks, so commissioning is straightforward and spares are easy to manage.
• Industrial Analog Ranges – Typically supports common voltage and current ranges (such as 0–10 V and 4–20 mA) used across process and machine control.
• Stable, Low-Noise Conversion – Designed for reliable readings in electrically noisy cabinets; grounding and shielding practices really pay off with this series.
• Scalable Channel Density – Suits multi-loop panels where you want higher channel counts per slot to save cabinet space.
• Diagnostics & Alarming – You might notice that input fault, over/under-range, and open-loop checks simplify troubleshooting during start-up.
• Field-Wiring Flexibility – Uses a removable terminal block (RTB style), which in many cases speeds up panel assembly and replacement.

Technical Specifications

Application Fields

This module is a good fit when you need stable, multi-loop analog handling on a proven PLC platform:

• Water & wastewater – flow, level, pressure and dosing control on RX3i skids
• Power & energy – balance-of-plant analog monitoring, fuel handling, cooling circuits
• Oil & gas – separator skids, pump stations, tank farms with mixed 4–20 mA and voltage signals
• Food & beverage – temperature loops and CIP skids, where tight repeatability is expected
• OEM machinery – compact panels needing higher channel density in one slot

One thing I appreciate is how it keeps commissioning simple in brownfield upgrades—drop into the RX3i rack, map channels in the existing project, and you’re typically up and running without rewiring the cabinet layout.

Advantages & Value

• Reliability – Stable readings in noisy environments; proven lifecycle support in many plants.
• Compatibility – Native with RX3i CPUs, racks, and engineering tools—no extra interface hardware.
• Cost Efficiency – Higher channel density reduces rack count, wiring time, and cabinet footprint.
• Serviceability – Removable terminal blocks and onboard diagnostics cut mean-time-to-repair.
• Support & Spares – Widely stocked; easy to carry a like-for-like spare for critical loops.

A packaging OEM told us their maintenance team swapped one of these modules in under 20 minutes, including a quick input sanity check—no project edits needed beyond channel scaling.

Installation & Maintenance

• Panel & Rack – Mount in a PACSystems RX3i rack; keep adequate clearance for airflow. Avoid placing high-frequency VFD cables in parallel with analog runs.
• Wiring – Use shielded twisted pair for analog; terminate shields at a single-point ground. Follow the module’s RTB pinout to separate voltage and current channels.
• Power & Grounding – Stable cabinet grounding is key. In many cases, tying analog common to the clean reference ground reduces drift.
• Calibration & Checks – Periodically verify with a traceable calibrator; spot-check 4–20 mA loops for load and loop integrity after panel changes.
• Firmware – If applicable, keep the CPU project and module firmware aligned with your site standard to avoid nuisance diagnostics.
• Environment – Operate within the rated temperature; maintain cabinet ventilation and keep humidity non-condensing.

Supporting Components (Typical RX3i Pairings)

• RX3i CPU modules (e.g., IC695CPU3xx series) for control logic and project execution
• RX3i power supplies (e.g., IC695PSD040) sized for your rack’s total load
• RX3i racks/backplanes (e.g., IC695CHS012) to accommodate current and future I/O
• Networking cards where needed, such as IC695ETM001 (Ethernet) or IC695PNC001 (PROFINET Controller)
• Removable terminal blocks (RTB) for field wiring; keep a spare on hand for fast changeouts

Quality & Certifications

• CE and UL markings are standard for RX3i modules in most regions
• RoHS-compliant construction in many markets
• Manufacturer’s warranty: 12 months (365 days) from shipment

If you need us to confirm the exact channel mix and ranges for your specific C695ALG628/IC695ALG628 sub-variant, share your I/O list or existing RX3i bill of materials and we’ll validate compatibility before you place the order.