DKG-309 User Manual V-02
(11.05.2009)
- 44 -
When the AC mains fails, the engine starts to run but the unit gives START FAIL alarm and
then the engine stops:
-The generator phase voltages are not connected to the unit. Measure the AC voltage between
terminals
GEN L1-L2-L3
and
Generator Neutral
at the rear of the unit while the engine is running. A
fuse protecting the generator phases may be failed. A misconnection may be occurred. If everything
is OK, turn all the fuses off, and then turn all the fuses on, starting from the DC supply fuse. Then test
the unit again.
The unit is late to remove engine cranking:
-The generator voltage rises lately. Also the generator remnant voltage is below 20 volts. The unit
removes starting with the generator frequency, and needs at least 20 volts to measure the frequency.
If this situation is to be avoided, the only solution is to add an auxiliary relay. The coil of the relay will
be between BATTERY (-) and charging alternator D+ terminal. The normally closed contact of the
relay will be connected serially to the unit's START output. So the starting will also be removed when
the D+ pulls to battery positive.
The unit is inoperative:
Measure the DC-supply voltage between terminals 19 and 22 at the rear of the unit. If OK, turn all the
fuses off, then turn all the fuses on, starting from the DC supply fuse. Then test the unit again.
Programming mode can not be entered:
The program lock input disables programming mode entry. Disconnect the program lock input from
battery negative before modification. Do not forget to make this connection again to prevent
unauthorized program modifications.
Some program parameters are skipped:
These parameters are reserved for factory setting and cannot be modified.
AUTO led flashes and the genset does not run when mains fail:
The unit is in Weekly Schedule
OFF
time. Please check date and time setting of the unit. Please
check also Weekly Schedule program parameters.
