DKG-255 User Manual Firmware V-1.0
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Cables of section 1.5mm² or higher should be used for battery and actuator connections (terminals A-B-
C-D). The section needs to be increased with long cable lengths.
The signal connections on terminals E-F-G-H-J should be twisted or shielded for the entire length of the
cable. The shield should be grounded at one end only. The other end of the shield should be left
unconnected in order to avoid current flowing through it.
The gap between the magnetic speed sensor and the ring gear teeth should not be less than 0.50mm
(0.020”). The usual way of adjusting the gap is backing up the sensor ¾ turn after touching the ring gear
teeth.
The magnetic speed sensor voltage should be at least 1.5 VAC RMS during cranking.
If the alternator voltage is used for speed detection, an AC voltage of 300V or below can be directly
connected to terminals E-F.
Do not rely exclusively on the governor controller-actuator
system for engine overspeed protection. An additional
overspeed shutdown means controlling the fuel solenoid
should be installed on the engine.
THE UNIT IS NOT FUSED. Use external fuse for battery
positive (terminal C) Install the fuse as nearly as possible to
the unit.
The fuse rating should be 16 Amps.
1.3 Wiring the Unit
