Allen Bradley 1756-OB8I Individually isolated digital DC output module

FAQ

Q1: What is the function of the 1756-OB8I module?
It provides 8 individually isolated DC output channels for controlling field devices in ControlLogix systems.

Q2: What voltage range does this module support?
It operates within 10 – 30 V DC, suitable for standard 12 V and 24 V DC systems.

Q3: How much current can each output handle?
Each channel can supply up to about 2 A at 30 °C, with derating at higher temperatures.

Q4: Does each output have isolation?
Yes, each output channel is individually isolated, improving protection and reducing electrical interference.

Q5: What type of loads can it control?
It can drive relays, solenoids, contactors, and other DC loads.

Q6: Does it require an external power supply?
Yes, an external DC power supply (typically 24 V DC) is required for field outputs.

Q7: What are the switching response times?
Typical switching times are up to ~1 ms for ON and ~2 ms for OFF transitions.

Q8: What are the physical size and weight?
The module measures about 300 mm × 38.1 mm × 111.25 mm and weighs approximately 0.30 kg.

1756-OB8I Allen Bradley

We will use wear-resistant cartons to seal the boxes, and take photos for your confirmation before sealing. We will pack the boxes only after confirmation.

For express delivery, we will use DHL, UPS, TNT, FedEx and EMS.

Please rest assured that we have a deep cooperation with express delivery companies and can ensure that your goods are delivered to you in good condition.