The DKG-255 is a microprocessor-controlled digital speed control unit designed to control engine speed with fast and accurate response to load changes.
The DKG-255 connects to a proportional electric forward-acting actuator and a magnetic speed sensor. It is also capable of receiving a speed signal from the generator voltage, eliminating the need for an MPU. It controls a variety of motors in constant speed (isochronous) or sagging modes.
The DKG-255 offers programmable parameters for adjusting idle speed and rated speed settings. Fast IDLE mode is selected via an external switch.
The PID automatic speed control function controls the dynamic characteristics of the unit and ensures stable operation with most engine types.
The device can automatically adjust PID parameters, simplifying the programming process and improving the quality of dynamic response.
An external speed control potentiometer can be connected to the device to control the motor speed from a remote location.
The auxiliary speed control input allows voltage-controlled speed control for synchronization and load sharing.
If the device is not receiving the appropriate speed signal, the speed signal monitoring circuit will detect this and disable the drive output to prevent any damage.
The device is capable of delivering a drive current of up to 10 A. However, the output current limiting circuit will protect the device from short circuits or overloads at the output.
Protection against reverse battery connection and transient voltages is provided.
FEATURES: PID auto-tuning function Microprocessor controlled Operation from 12 and 24 V Capable of driving various motors Direct-acting drive output Fast and accurate response Initial fuel adjustment Speed ramp adjustment Overspeed alarm output Adjustable nominal and idle speed Isochronous and reduced operation Gain and stability adjustment External speed adjustment capability Synchronization and load sharing Switch mode output circuit Continuous output current 10 A Speed sensor fault detection Battery reverse voltage protection Output short circuit protection Rugged construction Enamel-protected electronic circuit Small dimensions (130x110x27 mm) Low cost
TECHNICAL SPECIFICATIONS:DC power supply range: 10.0 to 33.0 V DCCurrent consumption: max. 100 mA (drive not connected)Speed input range: 40 Hz to 8000 HzSpeed signal amplitude: 1.5 to 300 VAC-RMSSpeed signal input resistance: 2 MΩExternal speed control: 5 kΩ trimpot between terminals G and JExternal speed control range: ± 6% min at 3000 HzAuxiliary input (terminal M):Input voltage range: 0 to 10 VDCInput resistance: 150 kΩRegulation range: ±25% min at 3000 HzSpeed accuracy in steady state: ±0.2 scent control range: 1 to 5%min.Drive power: 10 A continuous maxOperating temperature: -20°C (-4°F) to 70°C (158°F). Storage temperature: -30°C (-22°F) to 80°C (176°F). Maximum humidity: 95% non-condensing. Dimensions: 130 x 110 x 27 mm (W x H x D) Weight: 350 g (approx.) Mounting: Any position, preferably vertical
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