I/O modules

The GE IC697ALG321 analog input module captures four independent process signals. This unit weighs 0.38 kg and measures 17.5 cm x 10.2 cm x 2.5 cm. It provides 4 analog input channels for the Series 90-70 system. The module contains one 16-bit ADC and four signal conditioning circuits. For energy storage, it includes two 100µF tantalum capacitors. Therefore, the GE IC697ALG321 maintains input stability during brief power interruptions.

Technical Specifications

The table below lists all verified parameters for the GE IC697ALG321. Use this data for your system integration planning.

Analog Input Features

Each of the four channels accepts either voltage or current signals. The GE IC697ALG321 allows you to configure each input independently. Therefore, you can mix sensor types on the same module. The 16-bit ADC delivers high resolution for precise measurements. Consequently, this module suits applications requiring fine process control.

Signal Conversion Performance

The conversion time reaches 10 milliseconds for each active channel. Thus, the module scans all four inputs within 40 milliseconds. The overall accuracy stays within ±0.1% of the full scale. Hence, the GE IC697ALG321 provides reliable and repeatable data. The input impedance sits at 1 MΩ for voltage mode. For current mode, it drops to 250 Ω for proper loop operation.

Power and Energy Storage

The GE IC697ALG321 draws 180 mA from a 5V DC supply. Additionally, it requires 60 mA from a 24V DC supply for field power. Hence, the total power consumption equals 2.34W. The two 100µF capacitors provide 12 milliseconds of hold-up time. This short backup protects input values during minor voltage sags.

Installation and Connectivity

You can mount the GE IC697ALG321 into any Series 90-70 I/O slot. The module occupies one slot in the backplane. The 37-pin D-sub connector handles all four input wirings. For voltage signals, use twisted-pair cables with one wire grounded. For current loops, a simple two-wire cable works perfectly. The GE IC697ALG321 works seamlessly with the RMS-TSG-TZ-C static trip unit.

Environmental Durability

This analog input module operates reliably from 0°C to +60°C. It also withstands 95% relative humidity without condensation. The module survives vibration up to 2g from 10 to 150 Hz. Therefore, the GE IC697ALG321 suits most industrial control rooms perfectly.

Details