
SLC 32 Point Digital Output Module
The Allen-Bradley 1746-OV32 is an SLC500 High-density Discrete output module. This module supports sink wiring configuration and delivers a nominal voltage rating of 24VDC with applicable voltage range of 5-50VDC. Each channel provides an output current rating of 0.50A at 30 Deg. Celsius and 0.25 A at 60 Deg. Celsius. The surge current per channel is 1.0A for 10 ms at 30° C which may be repeated every One (1) second. When operated at 60 Deg. Celsius, the surge current remains the same however, the repeatability is increased to Two (2) second interval per surge.
Application Areas

1. Industrial automation production line control
1746-OV32 is widely used in various types of automated production lines, such as packaging machinery, assembly lines and material conveying systems, with its high-density configuration of 32 relay outputs. The module can simultaneously control multiple solenoid valves, motor starters and indicator lights to achieve multi-station collaborative operations. In the food packaging industry, its stable relay output characteristics can ensure the precise synchronization of filling, sealing and labeling processes. In a customer case, the production line efficiency increased by 15% after the module was adopted.
2. Electrical transformation of traditional equipment
As an expansion module of the SLC 500 system, 1746-OV32 is an ideal choice to replace old relay control cabinets. Its modular design can be directly connected to the existing 24V DC actuator, greatly reducing the difficulty and cost of transformation. In the machine tool automation upgrade project, the module simplified the original complex hard-wired circuit through logic programming, reducing the equipment failure rate by 40%, while retaining the original actuators to achieve an economical and efficient intelligent transition.
3. Logistics sorting and conveying system
In the field of logistics automation, the 32 independent outputs of 1746-OV32 can efficiently control the push rods, diverters and conveyor belt motors of the sorting machine. Its relay contacts support load currents up to 2A and can directly drive small and medium-power actuators. A certain express sorting center uses this module to control 10 sorting ports, and dynamically allocates parcel routes through PLC programming, with a sorting accuracy of 99.2%. At the same time, the module's LED channel status indication function greatly facilitates on-site maintenance.
Technical specifications
| Module Type | Digital DC Sinking output |
| Series | SLC 500 |
| Part Number/Catalog No. | 1746-OV32 |
| Brand | Allen-Bradley |
| No. of output | 32; Sinking output |
| Nominal Output Voltage | 24 VDC |
| Output Voltage range | 5-50 VDC |
| Output Current at 30 Deg. C. | 0.50A |
| Output Current at 60 Deg. C. | 0.25A |
| Signal Delay, ON transition | 0.1 ms |
| Signal Delay, OFF Transition | 1.0 ms |
| Backplane Current | 0.190A |
| Thermal Dissipation per channel | 0.172 Watts |
| Thermal Dissipation, min. | 0.95 Watts |
| Thermal Dissipation, total. | 6.45 Watts |
| Electronic Protection | No |
| Voltage Range | 5-50 Volts DC |
| Outputs | 32 |
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