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| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model | DSAI146 |
| Order number | 3BSE007949R1 |
| Product type | Analog input unit |
| Product family | S100 I/O |
| Input sensor type | Pt100 resistance temperature detector (RTD) |
| Sensor connection | 3-wire |
| Measuring channels | 31 |
| Reference channels | 1 |
| Measurement ranges | −100 to +320°C, −40 to +40°C, or −200 to +640°C |
| Resolution | 12 or 13 bits + sign |
| Electrical isolation | Galvanic isolation between channel and system |
Core Product Summary
It provides 31 measuring channels and one reference channel, allowing multiple temperature signals to be collected through a single input module within a compatible ABB control installation.
The DSAI146 supports documented measurement ranges of −100 to +320°C, −40 to +40°C, and −200 to +640°C, with a resolution of 12 or 13 bits plus sign. Galvanic isolation separates the input channels from the system. When selecting this module for maintenance or replacement, engineers should check the complete order number, installed S100 I/O configuration, Pt100 sensor wiring, configured measurement range, and controller hardware and software requirements.
ABB Advant Master -S100 I_O System
ABB S100 I/O System
Combined Analog Input/Output Module
| Input/Output Signal | Technical Specifications | Model |
|---|---|---|
| 0 to +10 V / 0 to +20 mA | 8 single-ended analog input channels and 8 analog output channels; 12-bit resolution for both inputs and outputs | DSAX 110A1 |
Digital Input Modules
| Input Voltage | Channels and Technical Specifications | Model / Connection Unit |
|---|---|---|
| 24 V DC | 32 channels in 4 groups; optoisolated; readable by scanning or interrupts | DSDI 110AV12 / DSTD 190V1 |
| 24 V DC | 32 channels in 4 groups; optoisolated; readable by scanning or interrupts; screw-terminal connection option | DSDI 110AV12 / DSTD 150A |
| 24 V DC | 32 channels in 4 groups; optoisolated; readable by scanning or interrupts; galvanically isolated connection option | DSDI 110AV12 / DSTD 195 |
| 24/48 V DC | 32 channels in 4 groups; optoisolated; readable by scanning or interrupts | DSDI 110AV12 / DSTD 196P |
| 48 V DC | 32 channels in 4 groups; optoisolated; readable by scanning or interrupts; screw-terminal connection options | DSDI 120AV12 / DSTD 190V1 or DSTD 150A |
| 110 V DC or 120 V AC | 32 channels in 4 groups; optoisolated; readable by scanning or interrupts | DSDI 110AV12 / DSTD 197 |
| 230 V AC | 32 channels in 4 groups; optoisolated; readable by scanning or interrupts | DSDI 110AV12 / DSTD 198 |
Digital Output Modules
Relay Outputs
Output voltage: 24–250 V AC or DC
| Model / Configuration | Output Type | Switching and Load Specifications |
|---|---|---|
| DSDO 115A / DSTD 108P | 32 relay channels | Maximum load current: 3 A; minimum load current: 0.1 A at 24 V DC or 2.5 VA AC. Maximum breaking capacity: 720 VA AC at cos φ > 0.4; 44 W DC at L/R < 40 ms. |
| DSDO 115A / DSTD 108LP | 32 relay channels | Maximum load current: 200 mA; minimum load current: 1 mA; listed load rating: 0.05 VA. Maximum breaking capacity: 5 VA AC at cos φ > 0.4; 5 W DC at L/R < 40 ms. |
Transistor Outputs
Output voltage: 24 V DC
| Model / Configuration | Channels | Output Type | Maximum Current |
|---|---|---|---|
| DSDO 115A | 32 | Short-circuit-protected transistor outputs | 500 mA |
| DSDO 115A / DSTD 109P | 32 | Short-circuit-protected transistor outputs | 2 A |
