The B810–008 115 Vac output module converts logic signals used within the PLC into eight independent 115 Vac outputs. Each output is capable of driving a relay, pilot lamp, motor starter, solenoid, or any other load up to 2.0 A. The B810–008 is capable of 6 A/group of eight and handling 12 A/module. The module uses eight triac switches to control loads connected to an external power source. These switches are designed to withstand the high surge currents typical of industrial loads.
Following is a simplified schematic of the B810–008 115 Vac output module.
Zero-cross threshold switching is incorporated into each output circuit. Upon controller command, outputs switch on at the first line voltage zero-crossing, and switch off at the first load current zero-crossing.
Output status indicators are provided for each output circuit. These neon indicators will be on when a load is connected and the output is on, or when there is no connected load. These indicators are isolated from the triac output and require a separate lamp supply which is fused at 1/4 A. Blown fuse indicators are also provided for each output circuit. These indicators light (on) when the corresponding fuse has blown.
