1756-IA16, 1756-IA16K ControlLogix 120V AC input module Technical Specifications - 1756-IA16, 1756-IA16K Attribute 1756-IA16, 1756-IA16K Inputs 16 (8 points/group) Voltage category 120V AC 50/60 Hz Operating voltage range(1) 74…132V AC, 47…63 Hz Input delay time (screw to backplane) Off to On On to Off Hardware delay: 10 ms max + filter time