Purchase now: Allen-Bradley 1756-OV32E High-Density Sinking Output Module
Atlantechdrives provides you the 1756-OV32E, a high-density 32-point DC sinking output module with integrated electronic protection. This module allows you to manage double the amount of field devices in a single chassis slot compared to standard modules, making it the perfect choice for high-volume manufacturing lines and dense control cabinets where space optimization is paramount.
- Outputs: 32 Sinking DC points (NPN)
- Density: 32 points per single-slot module
- Protection: Internal Electronic Fusing
- Voltage: 10-31.2V DC
- RTB Required: 36-pin 1756-TBCH or 1756-TBS6H
Maximizing Chassis Space with the 1756-OV32E
The 1756-OV32E is engineered for modern high-performance architectures. By packing 32 NPN (sinking) outputs into one module, it significantly reduces the cost-per-point of your I/O system. This high density is especially beneficial in automotive, beverage bottling, and sorting applications where many low-current sensors and actuators must be managed by a single rack. Despite its density, the 1756-OV32E does not sacrifice safety; it features group-based electronic fusing that protects the module from overcurrent events. The module communicates status bits for each point to the backplane, allowing your HMI to show exactly which output is active or faulted, improving diagnostic clarity in large-scale systems.
Installation Advice: Managing 36-Pin Wiring Bundles
Wiring 32 outputs into a single terminal block is a significant task. You must use the 36-pin 1756-TBCH (screw) or 1756-TBS6H (spring) terminal block. We recommend using 22 AWG wire with thin-walled insulation to ensure the wiring bundle can be neatly routed within the RTB housing. Because this is a sinking module, all 32 devices will share a common positive potential in the field; ensure your positive power distribution is robust enough to handle the cumulative current. For maintenance, clearly label each wire pair; troubleshooting a 32-point block without markers can lead to significant delays during a production outage.
Maintenance and Heat Dissipation Strategies
High-density modules like the 1756-OV32E generate more heat than 8-point or 16-point modules. It is critical to ensure that the ControlLogix chassis has adequate vertical clearance for air convection. In high-density racks, avoid placing the 1756-OV32E directly next to high-power processors like the L85E if possible. Periodically check the «Module Info» tab in Studio 5000 to monitor for any thermal warnings. Maintaining a clean environment and ensuring the cabinet’s filters are changed regularly will prevent dust buildup from trapping heat within the module’s 32 output transistors, ensuring a long and reliable service life.
FAQs
Q: Does the 1756-OV32E have per-point fusing?
A: No, the OV32E uses group fusing to manage its 32 points within the thermal and space constraints of the module.
Q: Can I use this with 12V DC loads?
A: Yes, the module supports a voltage range from 10V to 31.2V DC.
Do you need more references from this brand? Explore our full catalog of Allen-Bradley here.
For high-density sinking DC requirements, this 32-point card is technically compatible with any 1756-A17 17-slot large chassis.
