The GE IC697ALG230, also cataloged as the IC697ALG230 Base Converter Module, operates as a dedicated hardware component for analog signal acquisition and digitization within Series 90-70 PLC platforms. The unit processes up to eight differential analog inputs utilizing an integrated analog-to-digital converter circuit with hardware-level optical isolation to separate the field circuitry from the host backplane logic.
| Parameter | Specification |
|---|---|
| Model | IC697ALG230 |
| Brand | GE Fanuc Emerson |
| Origin | USA |
| Weight | 0.82 kg (1.81 lbs) |
| Dimensions | Single-slot rack width |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 4.0 W (0.8 A @ 5 VDC) |
| Number of Inputs | 8 differential channels (expandable to 120 max) |
| Input Signal Ranges | -10 VDC to +10 VDC, 4-20 mA (0.0 mA to 22.5 mA max) |
| Data Resolution | 16-bit channel configuration / 14-bit internal ADC |
| Fast Update Rate | 2.4 ms to 2.8 ms |
| Linearity | +/- 0.02% of full scale |
| Voltage Accuracy | +/- 0.01% of full scale, +/- 0.02% of value |
| Current Accuracy | +/- 0.05% of full scale, +/- 0.1% of value |
| Isolated Interface | 1500 VDC field-to-logic opto-isolation |
| Removable Connector | 40 pins terminal block with jack screw mechanism |
The IC697ALG230 uses dedicated backplane bus communication velocity protocols to ensure real-time transmission of digitized process values to the main processor. Through its physical expansion port interface, the module governs I/O density scaling profiles by controlling up to seven expansion units (IC697ALG440 or IC697ALG441), scaling total infrastructure density up to 120 inputs. Firmware flash compatibility enables individual low-pass filtering and per-channel CPU alarm interrupt routing, mitigating data collection jitter across high-density networks.
Q: Does the IC697ALG230 base converter module support hot-swapping while the rack is powered?
A: No. The Series 90-70 backplane requires total electrical isolation before hardware configuration adjustments. Upstream power feeding the +5 VDC logic bus must be disconnected before the module is extracted or inserted to prevent backplane bus errors or component degradation.
Q: How does the differential wiring configuration on the 40-terminal block mitigate field noise?
A: The differential architecture measures the signal voltage vector relative to two signal lines rather than a single shared ground reference. This configuration provides high common-mode rejection against external electromagnetic interference (EMI) on the 4-20 mA and +/- 10 VDC measurement loops.
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