Allen-Bradley 1771-ID16 A Isolated Input Module

Allen-Bradley 1771-ID16-A is a 16-channel isolated input module for PLC-5 systems that accepts nominal 120 V ac/dc input signals. Each of the 16 inputs is galvanically isolated and supports AC inputs in the 74–138 V range at 47–63 Hz or DC inputs in the 105–138 V range, with a nominal 120 V input. Nominal input current is 12.4 mA at 50 Hz or 14.9 mA at 60 Hz per channel for 120 V AC, and 2.5 mA per channel for 120 V DC; on-state minimums are 74 V AC or 105 V DC with 6.0 mA (AC, 47–63 Hz) or 2.0 mA (DC). Off-state maximums are 45 V AC or 66 V DC, with off-state currents of 4 mA (AC, 45 V) or 0.8 mA (DC, 63 V). Input delay is 1.0 ms for both Off-to-On and On-to-Off, with selectable AC delays of 9 ms or 18 ms (DC uses 9 ms). Input impedance is at least 9.3 kΩ (AC, 47 Hz) or 6.9 kΩ (AC, 63 Hz) and 75 kΩ off / 48 kΩ on for DC; power dissipation ranges from 0.3 W to 7.0 W depending on state.