Voltage, current and mixed input models
UE20 analog input modules provide differential signal measurement with 16-bit resolution, magnetic isolation, reverse protection and fault diagnostics. U models measure voltage, I models measure current, and UE20-4AI-UI-16 supports configurable voltage or current measurement.
| Model | Input type | Channels | Process data | System feed current |
|---|
| UE20-4AI-U-16 | Voltage | 4 | 8 bytes | <260mA |
| UE20-8AI-U-16 | Voltage | 8 | 16 bytes | <400mA |
| UE20-4AI-UI-16 | Voltage/current | 4 | 8 bytes | <14mA |
| UE20-4AI-I-16 | Current | 4 | 8 bytes | <260mA |
| UE20-8AI-I-16 | Current | 8 | 16 bytes | <400mA |
Input ranges and measurement performance
| Characteristic | U models | I models | UE20-4AI-UI-16 |
|---|
| Voltage ranges | 0 to +5V; -5V to +5V; 0 to +10V; -10V to +10V | Not applicable | 0 to +5V; -5V to +5V; 0 to +10V; -10V to +10V |
|---|
| Current ranges | Not applicable | 0-20mA or 4-20mA, configurable | 0-20mA or 4-20mA; voltage/current ranges configurable |
|---|
| Input resistance | >500kΩ | 100Ω | >500kΩ in voltage mode; 100Ω in current mode |
|---|
| Precision | 0.20% | 0.20% | 0.20% |
|---|
| Temperature coefficient | Not specified | ±50ppm/K maximum | Not specified |
|---|
| Characteristic | All models |
|---|
| Signal type | Differential |
|---|
| Signal connection | Two-wire |
|---|
| Resolution | 16 bits |
|---|
| Conversion time | <1ms |
|---|
| Reverse protection | Supported |
|---|
| Isolation | Magnetic isolation |
|---|
| Fault diagnostics | Supported |
|---|
Spring terminal connections
| Characteristic | 4-channel models | 8-channel models |
|---|
| Connection method | Spring terminal blocks | Spring terminal blocks |
|---|
| Conductor cross-section | 0.2-2.5mm² | 0.2-1.5mm² |
|---|
| AWG conductor range | AWG28-AWG14 | AWG28-AWG16 |
|---|
| Stripping length | 8-9mm | 8-9mm |
|---|
Supply, mounting and environment
| Characteristic | All models |
|---|
| Operating voltage | 24V DC, +20%/-15% |
|---|
| Height × width × depth | 100mm × 12mm × 68mm |
|---|
| Mounting | 35mm DIN rail |
|---|
| Ingress protection | IP20 |
|---|
| Operating temperature | -10°C to +55°C |
|---|
| Storage temperature | -20°C to +85°C |
|---|
| Relative humidity | 5-95%RH, non-condensing |
|---|