The GE IC693ALG392, also cataloged as the IC693ALG392 Analog Current/Voltage Output Module, operates as a dedicated hardware component for digital-to-analog signal conversion within Series 90-30 and PACSystems RX3i networks.
| Parameter | Specification |
|---|---|
| Model | IC693ALG392 |
| Brand | GE Fanuc / General Electric |
| Origin | Factory standard |
| Weight | 0.26 kg (0.56 lbs) |
| Dimensions | Single-slot chassis occupancy |
| Operating Temp | 0 to 60 deg C (Standard industrial environment) |
| Power Consumption | 260 mA at 5 VDC (from backplane bus) |
| Channel Density | 8 single-ended channels |
| Voltage Output Range | 0 to +10 V (unipolar), -10 to +10 V (bipolar) |
| Current Output Range | 0 to 20 mA, 4 to 20 mA |
| Update Rate | 8 msec (all 8 channels synchronized) |
| Max Output Load | 5 mA |
| Resolution | 15 to 16 bits (range dependent) |
| Isolation | Optical isolation between field side and logic side |
The module interfaces directly with the host chassis backplane, compressing eight independently configurable single-ended analog channels into a single mechanical slot. To maintain backplane bus communication velocity and prevent signal degradation during high-density I/O scaling, the internal logic subsystem utilizes dedicated registers to synchronize digital-to-analog conversion pipelines. The module refreshes all eight channels simultaneously within a fixed 8 msec update cycle, executing real-time deterministic command updates from the CPU while maintaining optical galvanic separation to prevent field-side transients from corrupting backplane data lines.
Q: Does the module support live removal or hot-swapping during PLC operations?
A: No. When installed in a standard Series 90-30 chassis, hot-swapping is strictly prohibited and power to the rack must be disconnected. When utilized within a PACSystems RX3i platform, insertion and removal under power are limited by the specific backplane electrical limits and host controller firmware compatibility.
Q: How are individual channel configurations changed between current and voltage modes?
A: Channel selections (such as 4-20 mA or -10 to +10 V) are entirely software-configured through the programming software environment (e.g., Proficy Machine Edition). No physical jumpers or hardware switches on the module housing require manual adjustment.
Q: What is the deterministic behavior of the analog outputs if the host CPU stops executing?
A: Upon loss of backplane bus communication or a CPU stop state, the module transitions its output channels to their configured default safety states, either forcing them to the low end of their scale or holding the last valid converted value.
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