The Verasys system supports a centralized demand shed for user-specified zones. A predefined binary input (BI) on an input output module (IOM) is used to trigger the load shed. All zones that have load shed enabled, shift their setpoints by a user-specified amount. You can also set an adjustable rate limit which controls how quickly the setpoint changes from its current setpoint to its shed setpoint in either direction. The setpoint shift occurs during occupied and standby modes.