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About the device
5. Installation
5.1
Visual check
After receipt, the unit has to be checked for signs of physical
damage. If any damage can be found, the unit may not be
operated. Also contact your dealer immediately.
5.2
Mains connection
The mains connection is done with the included mains
cord.
The plug is a 10A mains plug after IEC 20. The mains
cord has a length of about 1.5m and a cross section of x
0.75mm².
The unit is fused with a 5 x 20mm safety fuse (M0.6A),
which is accessible at the rear side
5.3
Terminal DC input
The load input is located at the front side of the device. The
connection to any feeding source is done here by Büschel
plugs or screw&clamp. Always take care for correct polarity!
Only DC voltages allowed!
The input is not fused. In order to prevent damages by the
feeding source always observe the nominal values of the
electronic load! If necessary, install an extra fuse between
load and source, especially when discharging batteries.
The cross section of the load cables depend on the current
input. We recommend to use:
at 60A:
2 x 6mm² or at least 1 x 16mm²
at 25A:
2 x 1mm² or at least 1 x 4mm²
per cable (flexible wire).
The inputs "+" und "-" are not grounded, so that one of them
may be grounded, if necessary.
Attention! When grounding one of the input poles al-
ways check if one of the output poles of the source (eg.
power supply) is also grounded. This could result in a
short-circuit!
Attention! Notice the potential shift of the input poles
when using series connection! Grounding is hereby
only recommended at the pole with the lowest potential
against ground.
© 2008, Elektro-Automatik GmbH & Co. KG
5.4
Terminal AUX (remote sense)
The remote sense feature is wired at terminal AUX. See
section „6.11 Functions of terminal System Bus" for more
information.
In order to compensate voltage drops over the load cables
(max. 1.1V per line) between feeding source and consumer,
the load can measure the voltage at the source via the re-
mote sense input poles at the terminal AUX and regulates
accordingly. The connection is done, with correct polarity, at
the rear side of the device at the terminal AUX, at pin 1 (+
Sense) and pin 4 (–Sense). Recommended cross section:
0,2mm
– 2,5mm
flexible wire with cable end sleeves.
2
2
!
(+) Sense must only be connected to (+) output
and (–) Sense must only be connected to (–) out-
put of the feeding source. Else both device might
get damaged.
The terminal also leads out a trigger signal via the pins TRIG
and GND. More information about the trigger signal in section
„6.7. Level A/B (Pulsed operation)".
5.6
Interface card slot
The unit can be equipped with an optional interface card.
The slot to insert the card is located at the rear side. Further
information about the interface cards can be found in section
9.
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