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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.

Hardware Specifications

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

Industrial Control and Network Determinism

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.

Frequently Asked Questions

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.

Field Installation Guidelines

  • Terminal Block Maintenance: Use the integrated jack screws on the 40-terminal front block to engage or disengage the wiring bundle interface cleanly. Ensure all field wiring pairs match the terminal designations on the module door card insert.
  • Expander Port Serial Interconnection: When linking IC697ALG440 or IC697ALG441 expander sub-modules to the expansion port, enforce the maximum limit of seven expanders per base converter to prevent synchronization timeouts and timing jitter.
  • Shield Grounding Infrastructure: Shielded twisted-pair (STP) cabling must be applied to all voltage and current sensor inputs. Terminate the overall drain wires at the chassis master earthing bar, keeping signal cables isolated from parallel high-voltage AC motor lines.

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