DATAKOM DKG-705 User’s Manual
705_USER.doc
- 4 -
1.2 Mounting the Unit
The unit is designed for panel mounting. The user should not be able to access parts of the unit
other than the front panel.
Mount the unit on a flat, vertical surface. The unit fits into a standard panel meter opening of 188x140
millimeters. Before mounting, remove retaining steel springs from the unit, then pass the unit through the
mounting opening. The unit will be maintained in its position by the steel springs.
The DKG-705 is factory set for 24V-DC operation. If the unit is used in a 12V-DC system, the 12V
jumper terminals must be short-circuited.
Do not operate a 12V-DC unit with a 24V-DC system. This
may cause the destruction of the unit. Always disconnect
the voltage selector jumper of a stocked unit.
The engine body must be grounded for correct operation of the unit. Otherwise incorrect voltage and
frequency measurements may occur, resulting in faulty operation of the genset.
The output of the current transformers shall be 5 Amperes. The input current rating of the current
transformers may be selected as needed (between 50/5 and 5000/5 amps). Current transformer outputs shall
be connected by separate cable pairs from each transformer, to related DKG-705 inputs. Never use common
terminals or grounding. The power rating of the transformer should be at least 5 Watts. It is recommended to
use 1% precision transformers.
If analogue sensors (e.g. temperature, oil pressure, oil temperature or fuel level) are connected to
DKG-705, it is not possible to use auxiliary displays. If temperature or oil pressure displays are already present
on the generator control panel, do not connect the sensors to the DKG-705. The unit is factory programmed
for VDO type sensors. However if a different type of sensor is to be used, it is possible to recalibrate the unit.
The calibration process will be explained later in this document.
The programmable digital inputs are compatible with both
‘normally open’
and
‘normally closed’
contacts, switching either to
BAT-
or
BAT+
.
The charge alternator connection terminal provides also the excitation current, thus it is not necessary
to use an external charge lamp.
