User manual

57
Instruction Manual
PSI 8000 3U HS PV Series
EN
Date: 10-28-2011
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
= U/I/R Contrary to U/I/P mode, the resistance set value
is adjustable here and power is only dened as a
limit (only with unlocked option „internal resistance
control“)
Attention! Activating the U/I/R operation mode will automatically
set the photovoltaics mode (PV) to „disabled“.
Note: 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 company where the power supply has also
been purchased. The serial number of the unit is required when
purchasing the option, because the unlock code is related to it.
In U/I/R operation mode you can add an adjustable internal
resistance 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:
U
set
= (U
0
- I
act
•Ri)
|
Iset, Pset
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
Output on OT Default: auto ON
=OFF The power supply output remains switched
off, even if 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
overtemperature shutdown limit. The error
 OT (overtemperature) is then displayed
as a warning.
= ON The power supply output remains on and will
provide voltage as long as at least one of the
power stages keeps working.
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: restore
= 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 1.500 200
2:
10.00 10.00 1.200 250
-:
0.00 0.00 1.500 500
-:
0.00 0.00 1.500 800
* Resistance values (red) only with unlocked option U/I/R. The unit changes,
depending on the model, between Ω and kΩ
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. Also see section 7.4.