Application options A wide range of integrated HVAC options can be fitted in the drive: General purpose I/O option (MCB IOI) 3 digital inputs, 2 digital outputs, 1 analog current output, 2 analog voltage inputs. Adds 3 relay outputs 3 PtIOOO/NilOOO inputs, 3 analog voltage outputs nected to supply, control and option Battery back-up for Real Time Clock Sensor input card Sensor input card for motor protec- Brake chopper option: Connected to an external brake resis- tor, the built-in brake chopper limits the load on the intermediate circuit when the motor acts as a generator. Mains Disconnect Switch...