User manual

45
© 2009, Elektro-Automatik GmbH & Co. KG
EN
Using the power supply
7.1 Deningoperationparameters
Setup operation mode +
The way of adjusting the set values, which operation mode is
used, how the unit shall react after the mains has restored or
the behaviour of the unit after an overtemperature error can be
conguredhere.
U/I/P or U/I/R operation mode
Setup op. mode Default: U/I/P
= U/I/P The power stage is controlled by voltage, current
and power set values (only models from 1kW and
with power regulation)
= U/I The power stage is controlled by voltage and current
(models up to 640W)
= U/I/R The power stage is controlled by voltage,current
and resistance set values and a settable, but not
adjustable power set value (only at unlock option
„internal resistance control“)
Notice: the U/I/R operation mode can only be used after it has
been unlocked in the Options menu. The unlock code can be
purchased at the sales company who sold the power supply. The
serial number of the unit is required to be told when purchasing
it, because the unlock code is related to it.
In U/I/R operation mode you can add an adjustable internal resi-
stance to this voltage source.
The voltage set value is related to the off-load voltage U
o
of the
power supply. The off-load voltage is reduced by the product of
I
act
 Ri
set
. The resulting voltage is calculated as follows:
Iset, Pset
U
set
= (U
0
- I
act
• Ri)
Clarication:
CR This is shown in the display while the internal resi-
stance control is active and U/I/R operation is set.
The internal resistance Ri
set
is displayed instead of the power
P
set
while U/I/R mode is active. However, the actual value of the
power is still displayed.
Reactivation after an overtemperature error
OT disappear Default: auto ON
=OFF
The power supply output remains switched off,
even if the the unit has already cooled down.
The error...
 OT (overtemperature) is displayed as an alarm.
= auto ON The power supply is automatically switched on
after the unit has cooled down below the over-
temperature shutdown limit. The error...
 OT (overtemperature) is then displayed as a warning .
Warnings as well as alarms are only deleted from the display after
they have been acknowledged (see also„6.13 Alarms, warnings
and signals“).
Output state after „power on“
Power ON Default: OFF
= OFF The power supply output remains switched off
after the mains voltage returns or after the unit
was switched on.
= restore The power supply output is set to the state it had
before a mains voltage loss occured or before the
unit was switched off. In case it was ON when the
unit was switched off, it will also be ON when the
unit is switched on again.
7.2 Predeningpresetlists
Preset List +
Youcanpredeneuptofourdifferentpresets.
No.
U[ V] I[ A] P[kW] R[Ω]
1:
0.00 0.00 1.500 20
2:
10.00 10.00 1.200 25
-:
0.00 0.00 1.500 50
-:
0.00 0.00 1.500 100
Resistance values (red) only at unlocked option U/I/R.
Power values (green) only at models
With the parameter Accept set value = from preset list you
can switch from the normal set values (eg. adjusted by the rotary
knob)tooneofthepredenedsetsorswitchbetweenprede-
ned sets. You can actually „jump“ between set values with this
option.