The GE IC695ALG708 is an 8-channel universal analog input module engineered for seamless integration within the GE PACSystems RX3i control platform. Designed to operate within the IC695 series backplane architecture, this module serves as a critical signal acquisition node in layered industrial automation systems — bridging field-level instrumentation with the CPU’s real-time data processing engine. Rather than functioning as a standalone component, the IC695ALG708 is purpose-built to enhance system consistency, expand I/O capacity, and support long-term maintainability across complex control architectures in manufacturing, power generation, petrochemical processing, water treatment, and mining applications.
Within a fully configured PACSystems RX3i rack, the IC695ALG708 occupies a universal I/O slot on the IC695CHS016 or IC695CHS012 backplane, receiving power from the IC695PSA040 or IC695PSD040 power supply module and communicating directly with the IC695CPE330 or IC695CPE302 CPU over the high-speed RX3i backplane bus. This tight integration eliminates the latency and signal degradation associated with remote I/O architectures, making the module ideal for closed-loop control applications where analog feedback accuracy is critical to process stability.
Product Specification Table
| Parameter |
Specification |
| System Role |
Analog Signal Acquisition — I/O Layer |
| Compatible Platform |
GE PACSystems RX3i (IC695 Series) |
| Number of Channels |
8 Channels, Universal (Voltage / Current) |
| Input Range |
±10V, 0–10V, 0–20mA, 4–20mA (software configurable) |
| Resolution |
16-bit |
| Isolation |
Channel-to-channel and channel-to-backplane isolation |
| Backplane Compatibility |
IC695CHS016, IC695CHS012 |
| Power Consumption |
Supplied via RX3i backplane bus |
| Operating Temperature |
0°C to 60°C |
| Communication |
RX3i high-speed backplane bus (direct CPU integration) |
| Configuration Tool |
Proficy Machine Edition (PME) |
| Mounting |
Universal I/O slot, IC695 backplane |
| Warranty |
warranty terms confirmed during quotation — Tested & Verified Before Shipment |
System Compatibility Notes
The IC695ALG708 achieves its full value when deployed as part of a coordinated PACSystems RX3i architecture. In a typical system configuration, the IC695CPE330 CPU manages scan cycle execution and data table updates, while the IC695ALG708 feeds real-time analog values — temperature, pressure, flow, or level — directly into the CPU’s reference table at each scan. This tight coupling supports deterministic control loops essential for process-critical applications.
On the power layer, the IC695PSA040 AC power supply or IC695PSD040 DC power supply provides stable backplane voltage, ensuring that analog signal conditioning circuits within the IC695ALG708 operate within specified accuracy tolerances. Voltage fluctuations at the power layer directly affect analog measurement quality, making power supply selection a key architectural decision when deploying this module.
For systems requiring expanded I/O capacity beyond a single rack, the IC695ALG708 can be deployed across multiple racks connected via the IC695LRE001 local expansion module or through PROFINET-based remote I/O using the IC695PNC001 PROFINET Controller. This allows engineers to distribute analog acquisition points across large process areas while maintaining centralized CPU control. In redundant CPU architectures using the IC695CPE330 with the IC695RMX128 redundancy memory exchange module, the IC695ALG708 continues to deliver analog data to both primary and secondary CPUs, supporting bumpless switchover during fault conditions.
At the human-machine interface layer, analog values acquired by the IC695ALG708 are typically visualized through QuickPanel+ HMI terminals or third-party SCADA systems connected via the IC695ETM001 Ethernet module. This end-to-end data path — from field sensor through the IC695ALG708, across the backplane bus, through the CPU, and out via Ethernet to the HMI — represents the complete signal flow that system architects must validate during commissioning.
Industrial Application Notes
In manufacturing and discrete production environments, the IC695ALG708 is commonly used to monitor servo drive feedback signals, hydraulic pressure transducers, and temperature sensors on assembly lines. Its 16-bit resolution supports precise quality control measurements where analog accuracy directly affects product conformance.
In power generation and electrical substation applications, the module acquires current transformer (CT) and potential transformer (PT) secondary signals for protection relay logic executed in the PACSystems RX3i CPU. The channel isolation architecture prevents ground loop interference — a critical requirement in high-voltage environments.
In petrochemical and refinery process control, the IC695ALG708 handles 4–20mA signals from pressure transmitters, flow meters, and level sensors distributed across hazardous process areas. Its compatibility with HART-capable field devices (via external HART multiplexers) extends its utility in asset management architectures.
In water and wastewater treatment facilities, the module supports continuous monitoring of dissolved oxygen, pH, turbidity, and flow rate — all critical parameters for regulatory compliance and process optimization. The module’s operating temperature range and backplane isolation make it suitable for both indoor control room installations and field-mounted enclosures.
In mining and metallurgical operations, the IC695ALG708 is deployed in conveyor control systems, crusher monitoring panels, and smelter process control racks where analog signal integrity under electrically noisy conditions is paramount. The RX3i backplane architecture’s inherent noise immunity supports reliable operation in these demanding environments.
Product Compatibility FAQ
Q1: Is the IC695ALG708 compatible with both IC695CHS016 and IC695CHS012 backplanes, and can it coexist with digital I/O modules in the same rack?
Yes. The IC695ALG708 occupies any universal I/O slot in both the 16-slot IC695CHS016 and 12-slot IC695CHS012 backplanes. It can coexist with digital input modules such as the IC695MDL654, digital output modules such as the IC695MDL764, and other analog modules in the same rack. Slot assignment is configured in Proficy Machine Edition (PME), which automatically maps each module’s I/O references into the CPU’s data table. No hardware jumpers are required for slot configuration.
Q2: How does the IC695ALG708 behave in a redundant PACSystems RX3i CPU architecture, and does it require special configuration for bumpless switchover?
In a redundant CPU configuration using the IC695CPE330 and IC695RMX128 redundancy memory exchange module, the IC695ALG708 continues to supply analog data to the active CPU. During a switchover event, the redundancy module synchronizes the I/O data table between primary and secondary CPUs, allowing the newly active CPU to resume control without interrupting analog acquisition. No special module-level configuration is required for the IC695ALG708 itself — redundancy behavior is managed entirely at the CPU and redundancy module level through PME configuration.
Q3: What does the warranty terms confirmed during quotation cover, and what is the recommended maintenance approach for long-term deployments?
Every IC695ALG708 supplied by ZYPLC is covered by a warranty terms confirmed during quotation against manufacturing defects and functional failures under normal operating conditions. Each unit undergoes functional testing and calibration verification prior to shipment. For long-term deployments, we recommend maintaining one spare IC695ALG708 per active rack as part of a preventive maintenance inventory strategy. Module replacement requires only slot removal and PME hardware configuration download — no field calibration is required, as channel configuration is stored in the CPU project file. Our technical support team is available to assist with commissioning, fault diagnosis, and warranty claims throughout the warranty period.
