This analog output module delivers precise control signals to field actuators in ABB distributed control systems. The ABB IMASO01 provides eight configurable channels that generate either 4–20 mA current or 0–10 V voltage outputs. Its slave design responds directly to commands from AC 800M controllers through the S800 backplane bus.
Key Technical Specifications
| Parameter | Details |
|---|---|
| Model | ABB IMASO01 |
| Product Type | Analog Slave Output Module |
| Dimensions (W x H x D) | 45 mm x 120 mm x 130 mm |
| Weight | 0.38 kg |
| Number of Outputs | 8 channels (individually configurable) |
| Output Signal Types | 4–20 mA (current) or 0–10 V (voltage) |
| Resolution | 12 bits (0.1 % of full scale) |
| Accuracy | ±0.2 % of span at 25 °C |
| Load Impedance | ≤ 600 Ω (current mode), ≥ 2 kΩ (voltage mode) |
| Isolation Voltage | 1,500 V AC (channel-to-bus) |
| Update Time | 10 ms per channel (cyclic) |
| Bus Interface | S800 I/O backplane connector |
| Power Consumption | 70 mA at 24 V DC (from backplane) |
| Operating Temperature | 0 °C to +55 °C |
| Protection Class | IP20 |
| Field Wiring | Removable screw terminal block (28–12 AWG) |
Output Architecture and Signal Flexibility
The ABB IMASO01 offers eight channels with individual software configuration for current or voltage output modes. Its 12-bit resolution delivers smooth analog control for proportional valves, variable speed drives, and positioning systems. A 10 ms update time per channel ensures responsive actuator adjustments in closed-loop applications. Furthermore, the slave architecture synchronizes output updates with controller scan cycles for deterministic performance.
Mechanical Design and Installation Convenience
This analog slave module occupies one slot in the S800 I/O rack and shares the 45 mm width of the platform family. Its 0.38 kg weight reduces stress on backplane connectors and simplifies module handling. A removable screw terminal block accepts 28 to 12 AWG conductors, streamlining field wiring and future modifications. LED indicators on the front panel display each channel’s output status and module operational state.
Load Driving Capabilities and Output Protection
The ABB IMASO01 drives loads up to 600 Ω in current mode and maintains stable output above 2 kΩ in voltage mode. Internal short-circuit protection limits fault current and prevents damage to output drivers during wiring errors. The module also incorporates over-temperature shutdown to protect internal circuitry during extreme conditions. Built-in diagnostic functions detect open-load conditions and report faults to the controller for rapid response.
Isolation Performance and Noise Rejection
This output module provides 1,500 V AC isolation between output channels and the backplane bus, breaking ground path disturbances. Galvanic isolation prevents control signal corruption from high-voltage transients in motor control cabinets. The design minimizes cross-talk between adjacent channels, maintaining output integrity in multi-loop systems. Additionally, output filtering reduces EMI emissions that could interfere with sensitive measurement instruments.
System Compatibility and Application Domains
The ABB IMASO01 communicates directly with AC 800M controllers through the S800 backplane for reliable command execution. It integrates seamlessly with 800xA automation platform and Compact Control Builder engineering tools. Consequently, this analog output module serves chemical dosing systems, damper controls, pump speed regulation, and precision heating applications effectively.
Details
| Weight | 0.38 kg |
|---|---|
| Dimensions | 45 × 130 × 120 mm |
