Product Overview
When you need dependable discrete output control in a compact form factor, the Allen-Bradley 1790-T0V16X delivers. This 24V DC 16-point sinking output module is part of the CompactBlock I/O family, designed to provide efficient, nonisolated switching for a wide range of industrial applications. Whether you are upgrading an existing control panel or building a new machine, the 1790-T0V16X offers the performance and reliability you expect from Allen-Bradley.
With 16 sinking outputs rated at 0.5 A per point and 4.0 A per common, this module handles moderate current loads with ease. The integrated DeviceNet power base simplifies wiring, while the photocoupler isolation protects your logic circuits from field-side transients. Choose the Allen-Bradley 1790-T0V16X for a robust, space-saving I/O solution.
Technical Specifications
The following table outlines the key electrical and mechanical characteristics of the Allen-Bradley 1790-T0V16X. These specifications are critical for ensuring proper integration into your control system.
| Parameter |
Value |
| Outputs per module |
16 points nonisolated, sinking |
| On-state voltage |
10V dc min, 24V dc nom, 28.8V dc max |
| On-state voltage drop |
0.5V dc max |
| On-state current |
1 mA min per channel |
| Off-state voltage |
28.8V dc max |
| Off-state leakage |
0.5 mA max |
| Output signal delay |
Off to On: 0.5 ms max, On to Off: 1.0 ms max |
| Indicators |
16 green status |
| Output current rating |
0.5 A max per output, 4.0 A max per common |
| Common type |
8 points/2 COM |
| DeviceNet power – supply voltage |
24V dc nom, 11…28.8V dc |
| DeviceNet power – power dissipation |
1.2 W max @ 28.8V dc |
| Field power – supply voltage |
24V dc nom, 10…28.8V dc |
| Field power – power dissipation |
6 mA @ 28.8V dc per point |
| Isolation |
I/O to logic: photocoupler isolation, 1250V ac rms |
| Wiring |
Terminal block (M3.0), screw torque: 7 lb-in max (use copper or copper-clad aluminum conductors) |
Performance and Reliability
The Allen-Bradley 1790-T0V16X is engineered for consistent performance in demanding industrial environments. Its fast output signal delay—0.5 ms off-to-on and 1.0 ms on-to-off—ensures responsive control in high-speed applications. The module's 16 green status indicators provide immediate visual feedback, simplifying diagnostics and reducing downtime.
Built with photocoupler isolation rated at 1250V ac rms, the 1790-T0V16X protects your controller from electrical noise and transient surges. This robust design minimizes the risk of damage, extending the module's service life and lowering your total cost of ownership.
Applications
The 1790-T0V16X is ideal for a variety of discrete control tasks, including:
- Machine tool control – Actuate solenoids, relays, and indicator lights in CNC machines and automated assembly lines.
- Material handling – Control conveyor motors, diverters, and sortation equipment with reliable on/off switching.
- Packaging machinery – Manage filling, sealing, and labeling operations where precise timing is essential.
Each application benefits from the module's compact design and easy integration with DeviceNet networks, making it a versatile choice for both new installations and retrofits.
Installation and Wiring
Proper installation ensures optimal performance. Follow these guidelines when mounting the 1790-T0V16X:
- Mount the module on a standard DIN rail or panel, ensuring adequate clearance for heat dissipation.
- Use copper or copper-clad aluminum conductors for all field wiring. Tighten terminal block screws to a maximum torque of 7 lb-in to prevent loose connections.
- Verify that the supply voltage stays within the specified range (11…28.8V dc for DeviceNet power, 10…28.8V dc for field power) to avoid damage.
- Check the polarity of the DC supply before powering up. Incorrect polarity can damage the module.
Maintenance and Longevity
The 1790-T0V16X requires minimal maintenance, but periodic inspections help ensure long-term reliability:
- Inspect terminal connections for tightness every six months, especially in high-vibration environments.
- Keep the module free from dust and debris. Use dry compressed air to clean the enclosure and terminal block.
- Monitor the status LEDs. If any output fails to activate, check the field wiring and load conditions before replacing the module.
By following a simple preventive maintenance schedule, you can maximize the uptime of your machinery and avoid costly unplanned downtime.
Compatibility and Integration
The Allen-Bradley 1790-T0V16X is part of the CompactBlock I/O family and is designed to operate on DeviceNet networks. It communicates seamlessly with Allen-Bradley controllers that support DeviceNet, such as CompactLogix and ControlLogix platforms when paired with a DeviceNet scanner module. This integration allows you to monitor and control the outputs from your central PLC or DCS.
Selection Guide and Purchasing Advice
Before purchasing the 1790-T0V16X, confirm the following:
- Verify that your control system supports DeviceNet communication. If not, consider using a gateway or a different I/O module.
- Check the output current requirements of your loads. The module provides 0.5 A per output and 4.0 A per common—ensure your loads do not exceed these limits.
- Ensure the field power supply voltage is within the 10…28.8V dc range.
When sourcing industrial automation parts, trust PLC Source PRO for genuine, high-quality components. Our inventory includes a broad range of Allen-Bradley modules and spares to support your operations.