Description
Product Description
The IC694ALG220 is a 4-channel analog input module for the PACSystems RX3i platform, engineered for precise voltage and current signal acquisition. Each channel supports –10 V to +10 V voltage inputs, with the ability to accept 4–20 mA current inputs through jumper selection, providing versatile analog monitoring options.
Designed for high-speed, accurate measurements, the module features 1 ms per-channel conversion, 16-bit resolution, and factory calibration. It delivers strong noise immunity, with over 80 dB cross-channel rejection, making it ideal for monitoring process variables such as temperature, pressure, flow, and level. IC694ALG220 requires isolated +24 VDC when installed in a Universal Backplane and mounts easily in any RX3i I/O slot.
LED indicators provide quick diagnostic feedback. The module is not hot-swappable and should be powered down before removal.
Technical Specifications
| Parameter |
Specification |
| Model |
IC694ALG220 |
| Manufacturer |
GE Fanuc / Emerson |
| Product Line |
PACSystems RX3i |
| Product Type |
4-Channel Analog Voltage Input Module |
| Weight |
0.57 lbs |
| Number of Channels |
4 analog inputs |
| Voltage Input Range |
–10 V to +10 V |
| Current Input Option |
4–20 mA (jumper-selectable) |
| Input Impedance (Voltage) |
>9 MΩ |
| Input Resistance (Current) |
250 Ω |
| Conversion Speed |
1 ms per channel |
| Update Rate |
4 ms for all channels |
| Resolution |
16-bit 2’s complement |
| Accuracy Typical |
±10 mV / 40 μA |
| Accuracy Max |
±30 mV / 160 μA over temperature |
| Linearity |
High linearity with factory calibration |
| Power Consumption |
5 VDC: 27 mA, 24 VDC: 98 mA |
| External Power |
Isolated +24 VDC via TB1 if in Universal Backplane |
| Isolation |
250 VAC continuous, 1500 VAC 1 min (field ↔ backplane) |
| Operating Temperature |
0 °C to 60 °C |
| Storage Temperature |
–40 °C to 85 °C |
| Humidity |
5–95% non-condensing |
| Mounting |
RX3i rack (any I/O slot) |
| Terminal Type |
Screw-type terminal block |
| Shielding |
Twisted, shielded instrumentation cable supported |
| Indicators |
Module OK LED |
Key Features & Advantages
-
4 independent analog inputs, supporting voltage and current
-
High-speed 1 ms/channel conversion for real-time monitoring
-
Factory-calibrated for precise measurements
-
Strong noise immunity with >80 dB cross-channel rejection
-
LED status indicators for fast diagnostics
-
Flexible mounting in any RX3i I/O slot
Applications
-
Industrial process monitoring: temperature, pressure, flow, level
-
Signal acquisition in distributed control systems
-
Systems requiring mixed voltage and current inputs
-
Environments needing accurate, high-speed analog measurements
FAQ
Q: Can the module handle current inputs?
A: Yes, 4–20 mA current inputs are supported via jumper configuration.
Q: Is the module hot-swappable?
A: No, the IC694ALG220 must be powered down before removal.
Q: What is the maximum input voltage?
A: The module supports –10 V to +10 V per channel.
