The B825–016 24 Vdc (True High) input module consists of a single group of 16 independent inputs. The B825–016 senses and converts switched input signals into logic voltage levels used by the PLC.
The module provides 16 inputs that share an external power supply. Inputs can be received from push buttons, limit and proximity switches, and other 24 Vdc sources. Input voltages are sensed by comparing the incoming voltage against a fixed threshold. The threshold is a function of the user–supplied field voltage.
Following is a simplified schematic of the B825–016 24 Vdc (True High) input module.
