Allen-Bradley 1790D-T0B16 CompactBlock LDX DeviceNet Digital Output Base Block
The 1790D-T0B16 is a 24 VDC 16-point digital sourcing output base block from Allen-Bradley's CompactBlock LDX I/O platform. Featuring integrated DeviceNet network connectivity and removable terminal blocks, it converts digital control signals into 24 VDC outputs for solenoids, relays, indicator lights, and actuators.
Sourcing Digital Output Architecture
The 16 output channels provide sourcing (PNP) operation, driving connected load devices by switching 24 VDC positive voltage directly to each field output terminal. Built-in electronic protection guards the internal circuitry against overcurrent and short-circuit conditions, while LED status indicators display local channel state and communication health.
Integrated DeviceNet Connectivity and Address Configuration
Featuring an integrated DeviceNet network port, the base block operates directly as a node on standard fieldbus networks. Network node addresses (0 to 63) are selected via hardware rotary switches or configured digitally over the network using RSNetWorx for DeviceNet software. The unit supports automatic baud rate detection for 125 kbps, 250 kbps, and 500 kbps communication speeds.
Mechanical Design and Bus Expansion
Built as an IP20 open-style module, the 1790D-T0B16 installs on standard 35 mm DIN rails or directly onto flat panel surfaces. It includes an integrated expansion connector that allows connection to CompactBlock LDX expansion modules, expanding total local I/O channel density without requiring extra DeviceNet network addresses.
Specifications
| Parameter | Specification |
|---|---|
| Model | 1790D-T0B16 |
| Brand | Allen-Bradley |
| Product Family | CompactBlock LDX |
| Module Type | DeviceNet Digital Output Base Block |
| Number of Outputs | 16 points, sourcing (PNP) |
| Nominal Output Voltage | 24 VDC |
| Operating Voltage Range | 10.2 to 26.4 VDC |
| Output Current | 0.5 A per channel max (4 A per module max) |
| Network Interface | DeviceNet (built-in) |
| Communication Rates | 125 kbps, 250 kbps, 500 kbps (Autobaud) |
| Node Address Configuration | Rotary switches (0–63) or software configuration |
| Termination Type | Screw terminals |
| Enclosure Rating | IP20 |
| Mounting | DIN Rail or Panel Mount |
| Operating Temperature | 0 to 55 deg C (32 to 131 deg F) |
| Storage Temperature | -40 to 85 deg C (-40 to 185 deg F) |
| Isolation | 1250 VAC rms between user power and DeviceNet |
| Dimensions | 52 x 104 x 42 mm (2.03 x 4.07 x 1.64 in) |
| Weight | 0.35 lbs (0.16 kg) |
Frequently Asked Questions
Q: What type of field loads can the 1790D-T0B16 drive directly? A: It drives 24 VDC loads up to 0.5 A per channel (sourcing/PNP), including solenoids, indicator lamps, small relay coils, and actuator signals.
Q: Can the 1790D-T0B16 connect to local expansion modules? A: Yes. The base block features an integrated expansion bus connector on the side, allowing it to interface directly with CompactBlock LDX expansion I/O modules on the same node.
Allen-Bradley 1790D-T0B16 CompactBlock LDX DeviceNet Digital Output Base Block
Allen-Bradley 1790D-T0B16 CompactBlock LDX DeviceNet Digital Output Base Block
The 1790D-T0B16 is a 24 VDC 16-point digital sourcing output base block from Allen-Bradley's CompactBlock LDX I/O platform. Featuring integrated DeviceNet network connectivity and removable terminal blocks, it converts digital control signals into 24 VDC outputs for solenoids, relays, indicator lights, and actuators.
Sourcing Digital Output Architecture
The 16 output channels provide sourcing (PNP) operation, driving connected load devices by switching 24 VDC positive voltage directly to each field output terminal. Built-in electronic protection guards the internal circuitry against overcurrent and short-circuit conditions, while LED status indicators display local channel state and communication health.
Integrated DeviceNet Connectivity and Address Configuration
Featuring an integrated DeviceNet network port, the base block operates directly as a node on standard fieldbus networks. Network node addresses (0 to 63) are selected via hardware rotary switches or configured digitally over the network using RSNetWorx for DeviceNet software. The unit supports automatic baud rate detection for 125 kbps, 250 kbps, and 500 kbps communication speeds.
Mechanical Design and Bus Expansion
Built as an IP20 open-style module, the 1790D-T0B16 installs on standard 35 mm DIN rails or directly onto flat panel surfaces. It includes an integrated expansion connector that allows connection to CompactBlock LDX expansion modules, expanding total local I/O channel density without requiring extra DeviceNet network addresses.
Specifications
| Parameter | Specification |
|---|---|
| Model | 1790D-T0B16 |
| Brand | Allen-Bradley |
| Product Family | CompactBlock LDX |
| Module Type | DeviceNet Digital Output Base Block |
| Number of Outputs | 16 points, sourcing (PNP) |
| Nominal Output Voltage | 24 VDC |
| Operating Voltage Range | 10.2 to 26.4 VDC |
| Output Current | 0.5 A per channel max (4 A per module max) |
| Network Interface | DeviceNet (built-in) |
| Communication Rates | 125 kbps, 250 kbps, 500 kbps (Autobaud) |
| Node Address Configuration | Rotary switches (0–63) or software configuration |
| Termination Type | Screw terminals |
| Enclosure Rating | IP20 |
| Mounting | DIN Rail or Panel Mount |
| Operating Temperature | 0 to 55 deg C (32 to 131 deg F) |
| Storage Temperature | -40 to 85 deg C (-40 to 185 deg F) |
| Isolation | 1250 VAC rms between user power and DeviceNet |
| Dimensions | 52 x 104 x 42 mm (2.03 x 4.07 x 1.64 in) |
| Weight | 0.35 lbs (0.16 kg) |
Frequently Asked Questions
Q: What type of field loads can the 1790D-T0B16 drive directly? A: It drives 24 VDC loads up to 0.5 A per channel (sourcing/PNP), including solenoids, indicator lamps, small relay coils, and actuator signals.
Q: Can the 1790D-T0B16 connect to local expansion modules? A: Yes. The base block features an integrated expansion bus connector on the side, allowing it to interface directly with CompactBlock LDX expansion I/O modules on the same node.
