The Allen-Bradley 1734-OB8 is a 8-channel sourcing digital output module for the POINT I/O platform. Each solid-state MOSFET output channel delivers up to 0.5A at 24V DC (10-28.8V range), with a total module capacity of 4.0A across all channels. The module provides 1500V AC isolation between channels and backplane with less than 1 ms response time. Compact and reliable, it is used for driving solenoids, indicator lights, relays, contactors, and small actuators in packaging machines, material handling, HVAC control, and discrete machine automation. Its IP20 rating and DIN rail mounting make it suitable for control cabinet deployment.
Frequently Asked Questions
Q: What type of output does the 1734-OB8 use?
A: It uses solid-state MOSFET sourcing outputs — the module supplies 24V DC to the load when active.
Q: What is the maximum current per channel and for the whole module?
A: 0.5A per channel, with a total module limit of 4.0A across all 8 channels combined.
Q: Do I need an external power supply for the outputs?
A: Yes, field power must be supplied externally through the terminal base (1734-TB or 1734-TBS).
Q: What is the response time?
A: ≤ 1 ms for both ON and OFF transitions.
Q: Is the 1734-OB8 suitable for inductive loads like solenoids?
A: Yes, but external suppression diodes are recommended for inductive loads to protect the MOSFET outputs.
Q: What is the operating temperature range?
A: -20°C to 60°C (-4°F to 140°F).
