The Navitron NT990DSI is a microprocessor intelligent interface which provides galvanically isolated signal conversions between wheelhouse steering control elements (Autopilot & DP systems etc.) and single or dual loop solenoid operated rudder positioning systems.
Type Approved and Wheelmarked for use with Navitron NT951G/991G MK2 autopilot systems, the NT990DSI is equipped with electrically isolated inputs for demanded rudder position data received from most Navitron Autopilot types and various proprietary control system types.
Digital data received from Navitron Autopilot Control Units, or analogue (-10Vdc to +10Vdc) signal voltages received from proprietary Autopilots/DP systems etc, is converted within the NT990DSI to provide installation selectable single or independent dual channel outputs for the positional control and automatic stabilisation of single or split rudder systems.
Four solid state switch outputs (2 per channel) rated 5A/11-40Vdc are a standard feature of the NT990DSI and solenoid switchline polarity (common +ve / common -ve) is installation selectable.
