GE Fanuc IC694ALG223-DB PACSystems RX3i Analog Input Module
Manufacturer: GE Fanuc
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Part Number: IC694ALG223-DB
Condition：New with Original Package
Product Type: Analog Input Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
GE Fanuc IC694ALG223 PACSystems RX3i Analog Input Module
The GE Fanuc IC694ALG223-DB, also cataloged as the IC694ALG223 analog input module, operates as a dedicated hardware component for acquiring current signal inputs from field transmitters and sensors within PACSystems RX3i backplane racks.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC694ALG223-DB (Base Model: IC694ALG223) |
| Brand | GE Fanuc |
| Origin | USA |
| Weight | 0.51 kg (1.13 lbs) |
| Dimensions | Standard RX3i Single-Slot Module Form Factor |
| Operating Temp | 0 deg C to 60 deg C |
| Power Consumption | 120 mA at 5 VDC (backplane bus load), 65 mA at 24 VDC (external field supply) |
| Number of Channels | 16 Current Input Channels |
| Input Signal Ranges | 0-20 mA, 4-20 mA (Normal), 4-20 mA (Enhanced) |
| Analog Resolution | 12-bit / 16-bit (4 uA/bit for 4-20 mA; 5 uA/bit for 0-20 mA) |
| Measurement Accuracy | +/-0.25% of full scale at 25 deg C (+/-0.5% over full operating temperature range) |
| Input Impedance | 250 ohms |
| Channel Update Rate | 13 ms |
| Isolation Barrier | 1500 V RMS channel-to-backplane |
| External Field Supply | 20 VDC to 30 VDC (24 VDC nominal) |
| Low Pass Filter Response | 19 Hz |
| Diagnostic Functions | Open-wire detection, overrange and underrange reporting |
Deterministic Backplane & Analog Signal Processing
Engineers integrate the GE Fanuc IC694ALG223-DB card into RX3i backplane slots to convert incoming process signals into digital values while maintaining steady backplane bus communication velocity. The onboard signal conditioner applies a 19 Hz low-pass filter across all 16 current loops to reject industrial electrical noise without introducing scan jitter to the primary CPU. Internal analog-to-digital converters execute continuous diagnostic checks to ensure firmware flash compatibility and maintain deterministic sample updates across complex control architectures.
Frequently Asked Questions
Q: Does the module require an external 24 VDC power supply to process analog loops?
A: Yes, in addition to drawing 120 mA from the 5 VDC backplane bus, the module requires an external user-supplied 20 VDC to 30 VDC supply (65 mA draw) to power the internal input signal conditioning circuits.
Q: How does the channel diagnostics function detect field wiring disruptions?
A: The module constantly monitors loop current; when operating in 4-20 mA mode, any current dropping below the minimum threshold triggers an open-wire fault bit in CPU configuration memory and updates the front panel status LEDs.
Field Installation Guidelines
Technicians must seat the module into an available RX3i backplane slot with system power turned off. Field wiring for all 16 analog channels must use shielded twisted-pair cables, grounding the shield drain wire at a single enclosure point to eliminate ground loop interference. Ensure the external 24 VDC power conductors remain within specified voltage limits (20 to 30 VDC) to maintain analog-to-digital conversion accuracy.