Voltage and current output selection
UE20 analog output modules provide four or eight differential channels. Choose a U model for voltage output or an I model for current output. Each has 16-bit resolution, magnetic isolation, reverse protection and fault diagnostics.
| Model | Output | Channels | Process data | Typical bus current at 5V DC |
|---|
| UE20-4AO-U-16 | Voltage | 4 | 8 bytes | 230mA |
| UE20-8AO-U-16 | Voltage | 8 | 16 bytes | 400mA |
| UE20-4AO-I-16 | Current | 4 | 8 bytes | 285mA |
| UE20-8AO-I-16 | Current | 8 | 16 bytes | 500mA |
Output ranges and load selection
| Characteristic | Voltage models | Current models |
|---|
| Configurable output ranges | 0 to +5V; -5V to +5V; 0 to +10V; -10V to +10V | 0-20mA or 4-20mA |
|---|
| Load impedance for selection | >5kΩ | <500Ω |
|---|
| Precision | 0.10% | 0.10% |
|---|
| Temperature coefficient | Not specified | <20ppm; temperature interval 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 |
|---|
System power and terminal wiring
The analog modules draw their operating power from the internal 5V bus. The 24V field circuit is separate. Use the model-specific typical bus currents above when assessing the I/O station power budget; they are not maximum-current ratings.
| Characteristic | All models |
|---|
| Internal bus supply | 5V DC nominal; 4.75-5.25V DC |
|---|
| Field circuit voltage | 24V DC, +20%/-15% |
|---|
| Connection method | Spring terminal blocks |
|---|
| Conductor cross-section for installation | 0.2-1.5mm² |
|---|
| AWG conductor selection | AWG28-AWG16 |
|---|
| Stripping length | 8-9mm |
|---|
Mounting and environmental limits
| Characteristic | All models |
|---|
| Height × width × depth | 100mm × 12mm × 68mm |
|---|
| Mounting | 35mm DIN rail |
|---|
| Ingress protection | IP20 |
|---|
| Operating temperature for application | -10°C to +55°C |
|---|
| Storage temperature for application | -20°C to +60°C |
|---|
| Operating relative humidity | 5-95%RH, non-condensing |
|---|
| Storage relative humidity | Below 90%RH, non-condensing |
|---|
