Reliance Electric 57409-D Analog Input Module

Reliance Electric 57409-D Analog Input Module is a two-channel, isolated analog input card for Reliance AutoMax PLC racks (M/N 57C409; documentation references J-3637). Each channel accepts input signals up to ±15 VDC and provides 12-bit per-channel conversion, with the isolated analog side powered by an internal DC-DC converter that supplies isolated +15 V and -15 V rails, while the inputs are isolated from the PLC logic common by 600 V. The module supports per-channel update rates from 0.5 ms to 32.767 s, with programmable input filters and 100% overrange capability; the two channels share a common that is isolated from the logic common. Physically, the module measures roughly 13.5 x 7.5 x 1 inches and weighs about 3 lb, designed to slot into AutoMax racks for reading analog voltages from process-control equipment, tachometers, potentiometers, and drive-control interfaces.