2 - Fagor Automation

ON
STATUS
DISPLAY
Other elements
Besides the various connectors, the front panel of these power supplies
has other elements that are mentioned next.
Status display
The 7-segment status display shows the system start-up sequence as
well as the possible errors and warnings that could come up. For further
detail, see the section < turning the module on > at the end of this chapter
and go to appendix A "Error messages at the RPS power supplies" to
interpret the errors and/or warnings displayed.
DC BUS command voltage selector switches
The two dip-switches located on top of the status display may be used to
program the DC BUS voltage to a particular value. The possible combinations
are:
VP5 V DC 625 V DC 600 V DC 675 V DC
ON
F. H2/40
Bus voltage selector switches.
Example.
ON
(1) (2)
(3) (4)
It represents the moving element of each switch.
Note. If the selected configuration is the - option 1 -, i.e. both switches
ON, the value of the bus voltage will be the one set by the user in
parameter VP5 of the RPS. By default, this value is 650 V DC.
Let's suppose that the mains voltage is 460 V AC. The voltage that the
DC BUS can supply is 1.41x460 = 650 V DC. Therefore, we must select a
switch setting like figure F. H2/40 - option 4 -, because any of the other
settings generates a BUS voltage lower than 650 V DC and the purpose
is to be able to raise the BUS voltage higher than the one mains can provide.
See the note below for switch configuration - option 1 -.
If the mains voltage is 430 V AC. The voltage that the DC BUS can supply
is 1.41x430 = 608 V DC. Therefore, we must select a switch setting
that sets a bus voltage higher than this value; i.e. either the one given by -
option 2 - or the one given by - option 4 - of figure F. H2/40. Any of these
two settings would be valid. See the note below for switch configuration -
option 1 -.
Clarifying note
In the conclusions drawn from these examples, the configuration - option
1 - has been ignored because the bus voltage depends on the value set
in parameter VP5. This parameter admits values between 500 V DC and
750 V DC and by default it is assigned a voltage of 650 V DC.
Considering that it has been set to its default value (650 V DC), this
switch configuration could also be set in both cases of this example.
For further information on parameter VP5 contact Fagor Automation S.
Coop.
ON
ON
Power supplies
POWER SUPPLIES
Regenerative regulated power supplies 2.
DDS
HARDWARE
Ref.1209
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