The Allen-Bradley 1769-OB32T is a high-performance discrete output module from the 1769 Compact I/O family. For starters, this module provides thirty-two (32) sourcing output channels with a nominal 24 Volts DC operating voltage. Specifically, it is designed for use with CompactLogix controllers and MicroLogix 1500 systems, occupying just a single slot in the chassis. Meanwhile, its high-density terminated design makes it particularly valuable for applications requiring substantial current per channel. Therefore, this module delivers exceptional output capability without compromising panel space efficiency.
To begin with, this module operates within a voltage range of 10.2 to 26.4VDC, with a nominal rating of 24VDC. In addition, it delivers fast output response times, featuring an OFF to ON delay of just 0.5 ms and an ON to OFF delay of 0.4 ms. Moreover, the 1769-OB32T draws 220 mA at 5.1 Volts from the backplane. Notably, the off-state leakage current is an extremely low 0.1 mA at 26.4V DC, which effectively prevents false triggering of sensitive loads. For instance, this minimal leakage is especially beneficial when driving high-impedance solid-state inputs.
Furthermore, the continuous current per point is rated at an impressive 2.0 A, making this module suitable for driving higher-power field devices. Similarly, the maximum continuous current per module reaches 4.0 A, with a surge current rating of 2.0 A for 10 ms repeatable every 2 seconds. Additionally, the maximum on-state voltage drop is only 0.3 VDC at 0.5 A, ensuring efficient power delivery to connected loads. Consequently, the module's maximum power dissipation is 1.10 W, with thermal dissipation rated at 4.76 W, requiring adequate ventilation within the control enclosure.
First, this output module features IEC Class 2 reinforced insulation, offering robust protection against electrical faults. Besides that, the 1769-OB32T provides reliable isolation between output channels and the system bus. For field wiring connections, however, this module requires a separate 1769-RTBN18 replacement terminal block. Likewise, you will need a 1769-RL1 door label and a 1769-RD door for proper identification and protection. Therefore, these accessories are available as individual ordering kits, not included with the module itself.
Next, the power supply distance rating for the 1769-OB32T is eight (8) modules. In other words, this rating defines the maximum allowable distance between this module and the power supply within the CompactLogix assembly. Exceeding this distance, however, may compromise system performance and configuration validity. For this reason, larger systems that require additional power can benefit from supplementary I/O power supplies. For example, you can strategically install additional power along the backplane to qualify the assembly and maintain proper control system operation.
Turning to physical dimensions, the 1769-OB32T measures approximately 118 x 35 x 87 mm (4.65 x 1.38 x 3.43 inches). Moreover, it has a lightweight design, weighing only 0.51 pounds (230 grams). In terms of wiring, the module supports solid copper wire sizes from 22 to 14 AWG and stranded wire from 22 to 16 AWG, with a recommended terminal torque of 0.68 N-m. Furthermore, its operating temperature ranges from 0 to 60 °C, with storage temperatures from -40 to 85 °C. The module also withstands vibration of 5g at 10 to 500 Hz and operating shock up to 30g, ensuring reliable performance in demanding industrial environments.
When installing the 1769-OB32T, the process is relatively straightforward. First, ensure the system power is disconnected before any installation work begins. Next, mount the module on a standard DIN rail or directly onto a panel using the integrated mounting tabs. After that, secure the module by engaging the DIN rail latches firmly into place. Following this, connect the field wiring to the 1769-RTBN18 removable terminal block, observing correct polarity for sourcing outputs. Finally, reapply power and configure the module within your programming software. For optimal performance, always adhere to the power supply distance rating of 8 modules and observe proper environmental specifications.
1 x Allen-Bradley 1769-OB32T output module
1 x 1769-RL1 door label
1 x 1769-RD door
Installation instructions leaflet
Note: The 1769-RTBN18 removable terminal block is not included and must be ordered separately.
All orders are shipped via FedEx, UPS, or DHL with reliable tracking services. Please contact our sales team for shipping lead times and freight charges.
Q1: Is the 1769-OB32T compatible with MicroLogix 1500 controllers?
A1: Yes, the 1769-OB32T works seamlessly with both CompactLogix controllers and MicroLogix 1500 systems as a local or expansion I/O module.
Q2: What is the maximum current I can draw per output channel?
A2: The maximum continuous current per point is 2.0 A, significantly higher than standard output modules. Always observe the 4.0 A per module total limit.
Q3: Does this module come with the removable terminal block?
A3: No, the 1769-RTBN18 terminal block is sold separately. You will need to order it as an individual kit.
Q4: Can I install this module more than 8 slots away from the power supply?
A4: No, the power supply distance rating is 8 modules. Exceeding this limit may cause configuration issues and is not recommended.
Q5: What is the difference between the 1769-OB32 and the 1769-OB32T?
A5: The 1769-OB32T offers higher current capacity (2.0 A per point vs 0.5 A), faster OFF delay (0.4 ms vs 1.0 ms), and lower leakage current (0.1 mA vs 1.0 mA), making it suitable for more demanding applications.
| Brand Name | |
| Model No. | 1769-OB32T |
| Product Type | Output Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
