Allen-Bradley 1734-IA4 Digital AC Input Module

Allen-Bradley 1734-IA4 is a POINT I/O digital input module that provides four 120 V AC, non-isolated, sinking input channels. Each channel accepts standard 120 VAC input signals from devices such as switches or sensors, with a common return shared across all four inputs. The module requires an external 120 V AC power supply (nominal 120 V, 60 Hz; operating range 85–132 V, 47–63 Hz) and communicates with the POINT I/O bus via the POINTBus, drawing up to 75 mA at 5 V DC. Power dissipation is up to 0.50 W at 132 V AC; isolation voltage is not specified for field-to-bus on this non-isolated IA4 variant. For mounting, the IA4 is open style and designed for DIN mounting with bases such as 1734-TB, 1734-TBS, 1734-TOP, or 1734-TOPS. Module dimensions are 2.21 in. long × 0.47 in. wide × 2.97 in. high and it weighs about 1.09 oz. The four inputs are non-isolated and configured as sinking inputs, making this module suitable for reading discrete 120 VAC signals in a Rockwell Automation control system via the POINT I/O network.