IC200ALG320: A Cost-Effective Path to Reliable Analog Control
Industrial teams often face a tough choice: replace an entire control system or find a drop-in analog output module that restores performance without the capital hit. The IC200ALG320 from GE Fanuc’s VersaMax series solves that problem. This 4-point analog current output module delivers 4-20 mA signals with 12-bit resolution and a 0.3 ms maximum update rate. It was formerly manufactured by GE Intelligent Platforms and is now under Emerson Automation. For plants running legacy VersaMax I/O, this module protects your existing investment.
Key Specifications That Drive Cost Efficiency
The IC200ALG320 provides four single-ended current-sourcing outputs. Each channel generates a nominal 4-20 mA signal with 12-bit analog resolution, translating to fine control over modulating valves, dampers, and variable frequency drives. The 0.3 ms update rate supports responsive closed-loop control without overspending on a faster controller. Accuracy is 0.3% typical and ±1% maximum at full scale, which reduces product waste in batching and blending applications.
Power flexibility is another cost saver. The module accepts an external supply of 18-30 VDC or 9.6 to 15 VDC, so you can often reuse existing field power instead of buying new supplies. Current consumption is 240 mA maximum, and current draw is 50 mA maximum. Two LEDs—FLD PWR and OK—give immediate status feedback, cutting troubleshooting time and labor costs.
| Specification | Value |
|---|---|
| Part Number | IC200ALG320 |
| Brand / Series | GE Fanuc / VersaMax |
| Outputs | 4 analog current-sourcing outputs |
| Output Signal | 4-20 mA nominal |
| Analog Resolution | 12 bits |
| Update Rate | 0.3 ms maximum |
| External Power Supply | 18-30 VDC; 9.6 to 15 VDC |
| Current Consumption | 240 mA maximum |
| Current Draw | 50 mA maximum |
| Accuracy (Full Scale) | 0.3% typical, ±1% maximum |
| Wiring Configuration | Single-ended |
| Output Grouping | Single group |
| Diagnostics | Loss of user side power |
| Output Default | Hold last state; 4 mA |
| LEDs | 2 |
Where the IC200ALG320 Pays for Itself
In water treatment, the module controls chemical dosing pumps via 4-20 mA signals. The 12-bit resolution ensures precise dosing, reducing chemical waste and compliance penalties. The 0.3 ms update rate keeps pace with flow changes, avoiding over-treatment costs.
In HVAC and building automation, the IC200ALG320 drives damper actuators and valve positioners. The hold-last-state jumper prevents costly uncontrolled conditions during power interruptions. The 4 mA default option gives a safe fallback, protecting equipment and avoiding emergency repair bills.
For OEM machine builders, this module supports signal re-transmission to panel meters, data loggers, or signal splitters. You avoid buying separate signal conditioners, cutting panel costs and wiring labor. The single-ended wiring configuration simplifies installation, reducing commissioning time.
Installation and Setup for Minimal Downtime
The IC200ALG320 installs as part of a VersaMax distributed I/O network. It requires backplane power and an external field supply within the specified voltage ranges. Because it is a single-group output module, you wire all four channels to one common reference. Keep field wiring separated from high-voltage lines to reduce noise. Verify the external power supply polarity before energizing. The two LEDs help you confirm field power and backplane power immediately after power-up.
Maintenance and Long-Term Reliability
Inspect the module periodically for loose terminal connections and dust buildup. The IC200ALG320 has no moving parts, so wear is minimal. However, the external power supply and field wiring are common failure points. Use the loss-of-user-side-power diagnostic to catch field power issues early. The hold-last-state feature prevents process upsets during CPU stoppage, but you should test this behavior during scheduled shutdowns. Following these practices extends module life and lowers total cost of ownership.
Compatibility and Integration
The IC200ALG320 integrates with VersaMax PLC and remote I/O systems. It communicates through the backplane to the CPU or network interface unit. The module works with a wide range of analog final elements, including modulating valves, positioners, VFDs, and signal isolators. If you are replacing a failed module, confirm the part number and series match your existing VersaMax rack.
Selection Guide: What to Verify Before Buying
Before ordering the IC200ALG320, confirm your system uses VersaMax I/O and that you need 4-20 mA current outputs. Check that your field power supply falls within 18-30 VDC or 9.6 to 15 VDC. Verify you have four available output channels and single-ended wiring compatibility. SpareTechPLC supplies this module and can help you confirm fit. Please verify current lifecycle status and availability with SpareTechPLC before ordering.
Frequently Asked Questions
What is the output signal range of the IC200ALG320?
The module provides a nominal 4-20 mA output signal on each of its four channels.
Can the IC200ALG320 hold its last output state during a fault?
Yes. A jumper allows outputs to hold their last state or default to 4 mA when the CPU stops or a module fault occurs.
What external power supply does the IC200ALG320 require?
It requires an external supply of 18-30 VDC or 9.6 to 15 VDC.
How many LEDs does the IC200ALG320 have and what do they indicate?
It has two LEDs: FLD PWR shows field power presence, and OK shows backplane power.
Is the IC200ALG320 still in production?
The module was formerly produced by GE Intelligent Platforms and is now under Emerson Automation. Please verify current lifecycle status and availability with SpareTechPLC.
