The Allen-Bradley 1734-IB8 is a compact 8-channel sinking digital input module for the POINT I/O distributed I/O platform. It accepts 24V DC field inputs (10-28.8V DC range) with an on-state current of 2-5 mA per channel. Each channel provides channel-to-backplane basic insulation at 50V continuous and features a configurable input filter from 0 to 63 ms for debouncing. At only 12 mm wide and 31.8 g, it maximizes panel density. Compatible with ControlLogix, CompactLogix, and Micro800 controllers, the 1734-IB8 is typically deployed in packaging machinery, conveyor control, valve monitoring, limit switch detection, and general-purpose discrete sensing applications where space is at a premium.
Frequently Asked Questions
Q: Is the 1734-IB8 a sinking or sourcing input module?
A: It is a sinking input module — the field device supplies 24V DC to the input terminals when active.
Q: How much current does each input channel draw?
A: Each channel draws 2-5 mA at the rated input voltage (typically 4 mA at 24V DC).
Q: What terminal base is required for the 1734-IB8?
A: It requires a 1734-TB or 1734-TBS removable terminal base, sold separately.
Q: Can I configure the input filter delay?
A: Yes, the input filter is configurable from 0 to 63 ms (in addition to the fixed 0.5 ms hardware filter).
Q: What is the maximum operating temperature?
A: -20°C to 55°C (-4°F to 131°F) in horizontal DIN rail mounting.
Q: Is the module suitable for hazardous locations?
A: Yes, it carries ATEX Zone 2 and Class I Division 2 certifications.
Q: What is the width of the module?
A: Only 12 mm wide, making it one of the most compact 8-channel input modules available.
