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GE IC670ALG330 Output Module
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- Part Number: IC670ALG330
- Brand: Honeywell
- Type: Output Module
- Dimensions: 4x18.5x12.7cm
- Country of Origin: USA
- Barcode: 8537101190
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Additional Specifications
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Product Description
The GE Fanuc IC670ALG330, also cataloged as the IC670 Analog Output Module, operates as a dedicated hardware component for continuous variable signal generation within Field Control I/O stations. The sub-assembly drives 8 single-ended current source outputs natively at the hardware tier to actuate control valves, variable speed drives, and analog chart recorders across modular expansion frameworks.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC670ALG330 |
| Brand | GE Fanuc Emerson |
| Origin | USA |
| Weight | 0.56 lbs (0.26 kg) |
| Wiring Configuration | Single-ended |
| Series | Field I/O control |
| Channel Density | 8 Current Source outputs |
| Signal Type | Analog Current (Sourcing) |
| Output Signal Nominal | 0 to 20 mA |
| Output Signal Range | 0.0 to 20.48 mA |
| Digital-to-Analog Resolution | 16 bits (0.3125 uA per count maximum resolution) |
| Magnitude Data Size | 14 bits |
| Linearity | 1 LSB resolution value |
| Update Time | 1.5 ms typical per channel |
| Output Load Capacitance | 2000 pF maximum |
| Output Load Inductance | 0.5 H maximum |
| Open Wire Threshold | 1.0 mA minimum, 3.5 mA maximum |
| Dielectric Isolation Limit | 1500 VAC for 1 minute / 250 VAC continuous (to ground and logic) |
| Nominal Supply Voltage | 24 VDC typical (18 to 30 VDC allowable range, 10% maximum ripple) |
| BIU Power Consumption | 85 mA maximum current drawn from Bus Interface Unit backplane |
| External Power Consumption | 250 mA maximum drawn from external supply (all 8 outputs at 20 mA) |
| Status Diagnostics | 1 LED indicator (Steady = OK, Flashing = Fault, Off = No Power/Fatal) |
| Product Type | Analog Output Modules |
Industrial Control & Drive Communications
- Backplane Bus Communication Velocity and Signal Scaling The onboard Digital-to-Analog Converters (DAC) receive digital registers scaled in engineering units from the local Bus Interface Unit (BIU) via the passive parallel backplane structure. The internal processing logic parses incoming data words, applies stored flash-memory calibration configurations, and updates all 8 analog channel current tracks within a typical 1.5 ms execution window to preserve deterministic control loop velocities.
- I/O Density Scaling and Fault State Containment The module integrates intelligent hold-last-state parameters configurable per channel. If a backplane power drop occurs, the module watchdog timer expires, or no data packets are received from the BIU within the timeout period, the hardware automatically locks the active current outputs to their last valid value, dropping DAC operational resolution from 16 bits to 14 bits to maintain output stability during network recovery windows.
Frequently Asked Questions
Q: What technical fault diagnostics trigger an alarm flag on the IC670ALG330?
A: The internal processing architecture continually validates output loop continuity. The hardware generates distinct diagnostic alarm registers and passes error codes across the backplane bus to the BIU when encountering under-range signals, over-range exceptions, or an open-wire field fault where current falls below the 1.0 to 3.5 mA threshold.
Q: Can the module calibration parameters be recovered if the configuration becomes corrupted?
A: Yes, the module features on-board non-volatile flash memory that archives the factory calibration data baselines. Users can clear custom field scaling parameters via configuration commands to restore the module directly to its factory-calibrated current output settings.
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