The Allen-Bradley 1734-OB8 is a POINT I/O 8-channel digital DC sourcing (PNP) output module rated at 1.0A per output channel (3.0A max per module) at 24V DC. Each output features 0.2V max on-state voltage drop, 0.5 mA max off-state leakage, and 0.1 ms output signal delay for fast-switching applications. Electronic protection handles 2A surge current for 10 ms. The module provides 50V continuous reinforced insulation (tested at 2500V DC) and supports RIUP hot-swapping with ADR (Auto Device Replacement). Applications include controlling 24V DC solenoids, relays, indicator lights, contactors, and other industrial actuators in distributed automation systems using EtherNet/IP, ControlNet, or DeviceNet communication adapters.
**Q: What is the maximum current per output on the 1734-OB8?**
A: Each output channel supports up to 1.0A, with a maximum module total of 3.0A across all 8 channels.
**Q: Is the 1734-OB8 compatible with inductive loads like solenoids?**
A: Yes, the module can drive inductive loads. External surge suppression (flyback diodes) is recommended for inductive loads to protect the output transistors.
**Q: Can I hot-swap the 1734-OB8 while the system is running?**
A: Yes, the module supports RIUP (Removal and Insertion Under Power) for hot-swap replacement without system shutdown.
**Q: What is the difference between the 1734-OB8 and 1734-OB8S?**
A: The 1734-OB8S is the safety-rated version (POINT Guard I/O) designed for functional safety applications up to SIL 2/PLd. The standard 1734-OB8 is for general-purpose control.
