The GE Fanuc IC200ALG264, also cataloged as the IC200ALG264 15-Point Analog Current Input Module, operates as a dedicated hardware component for single-ended current signal acquisition within VersaMax I/O platforms. The module processes 15 analog current channels configured in a single group, converting 0-20 mA or 4-20 mA signals into 15-bit digital values for backplane transmission to the main CPU.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC200ALG264 |
| Brand | GE Fanuc |
| Origin | USA |
| Weight | 0.50 lbs (0.23 kg) |
| Dimensions | Single slot VersaMax footprint |
| Operating Temp | 0 deg C to 60 deg C |
| Power Consumption | 100 mA maximum at 5 VDC from PLC backplane |
| Number of Channels | 15 single-ended inputs (1 group) |
| Analog Resolution | 15 bits |
| Input Ranges | 0-20 mA, 4-20 mA |
| Digital Resolution | 0.5 uA (4-20 mA), 0.625 uA (0-20 mA) |
| Input Impedance | 100 Ohms |
| Filter Response | 24 Hz +/-20% (3dB corner frequency) |
| Update Rate | 7.5 ms maximum |
| Isolation | 250 VAC continuous, 1500 VAC for 1 minute |
| Diagnostic Features | Loss of internal power, open wire detection (4-20 mA mode) |
Backplane Bus Communication Velocity & Firmware Flash Compatibility
The module executes high-speed serial data exchanges over the VersaMax backplane bus, completing full 15-channel data updates within a maximum cycle time of 7.5 ms. Field signals pass through dedicated Analog-to-Digital Converter (ADC) circuits with hardware 24 Hz low-pass filtering, suppressing ambient electrical transients before writing 15-bit digital outputs directly to CPU memory tables. Range execution operates via terminal hardware jumpers; removing the jumper selects default 4-20 mA processing, while installing the jumper configures 0-20 mA operation without requiring firmware re-flashing.
Frequently Asked Questions
Q: How is the input range switched between 4-20 mA and 0-20 mA?
A: Signal range selection is determined physically by the terminal jumper configuration. Leaving the terminal jumper uninstalled configures 4-20 mA operation, whereas installing the jumper sets the module to 0-20 mA operation.
Q: Does open wire diagnostic detection function in both signal range modes?
A: No, open wire detection is active only when operating in the 4-20 mA mode. Loss of internal power diagnostics remains active in both operating modes.
Q: Is channel-to-channel isolation provided on the 15 input channels?
A: No, all 15 single-ended channels belong to a single common group and share the same return potential, providing group isolation of 250 VAC continuous to the backplane, but no isolation between individual channels.
Field Installation Guidelines
- Mount the module chassis firmly onto a standard DIN rail or panel plate within the VersaMax rack alignment.
- Ensure system power is disconnected before seating the module into its corresponding terminal carrier interface.
- Wire field transmitters to the 15 single-ended channel terminals, ensuring sensor power supplies match loop compliance requirements.
- Set hardware jumpers on the terminal block base according to the targeted input signal format (uninstalled for 4-20 mA, installed for 0-20 mA).
- Terminate input cable shields at a dedicated system grounding bar to maintain noise immunity and backplane signal integrity.
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