AHD 501

Central unit for bow thruster control with fixed propeller

The AHD 501 central unit is a microprocessor-controlled device and includes all inputs and outputs required to control and monitor the power section of the bow thruster, consisting of a three-phase asynchronous engine (slip ring rotor) with attached fixed propeller. The central unit is installed on the power unit or in the control cabinet of the bow thruster. The device works together with up to 4 AHD 502 operating panels.

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Control and monitoring module for bow thrusters with three-phase asynchronous motor
Module housing for installation on standard mounting rails in desks, consoles, control panels or control boxes
Protection class IP 20
Weight approx. 0.7 kg
24 V DC power supply +30%/-25%
Power consumption max. 0.5 A
CAN bus data communication with up to 3 AHD 502 control units
Direct control of turnaround, level and intermediate shooters, including
Feedback check
Control of the 3 main stages (70%, 85%, 100%) and up to 6 intermediate stages
Fan control and monitoring
2-phase monitoring of motor current (galvanically isolated) and winding temperatures in the motor
Engine oil level monitoring
Control of the contactor control voltage (circuit breaker)
Controllable direct lock at 100 percent level
High load capacity of the relays to control the contactors; the use of auxiliary contactors is only necessary in exceptional cases
3 integrated LED status display for power supply, fault and alarm
USB diagnostic interface for service, configuration and status messages. All essential parameters can be queried or configured on site.

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