AHD 418
Central Unit for Bow Thruster Control for Fixed Propeller
The central unit AHD 418 is a microprocessor-controlled device comprising all required in and outputs for control and monitoring of the power section of a bow thruster, consisting of a 3-phase-asynchronous motor (slip-ring rotor) with fixed propeller. The central unit is installed in power section resp. in the control cabinet of the bow thruster.
Product Features
- Profile module for installation on standard profile rails in consoles, control panels or control cabinets
- Degree of protection IP 20
- Weight approx. 0.7 kg
- Power supply 24 V DC +30%/-25%
- Current consumption max. 0.3 A
- Serial communication with up to 4 control units AHD 419
- Direct control of direction, stage and interstage contactors including feedback monitoring
- Control of 3 main stages (70%, 85%, 100%) and up to 6 interstages
- Fan control and monitoring
- Monitoring of motor current and of winding temperatures in the motor
- Monitoring of oil level of motor
- Check of contactor control voltage (circuit breaker)
- Controllable direct-locking of 100-percent-stage
- High rating of relay for contactor control; the demand for auxiliary contactors is only required in exceptional cases
- Integrated LED-status indications for all in and outputs, as well as most important alarms (over current and excess temperature) in central unit AHD 418