6RL SERIES OPERATION MANUAL
SECTION 7: REMOTE PROGRAMMING
Entire Contents Copyright
2018 by Adaptive Power Systems, Inc. (APS) • All Rights Reserved • No reproduction without written authorization from APS.
6RL Series Regenerative DC Load Operation Manual
Page 168 of 204
No. Command
Description
21
VOLT˽0
Set voltage to 0 V, so the unit can clearly operate in current control mode
22
CURR˽88
The current peak of this example is calculated as 80 A, so we set 110%,
means 88 A
23
POW˽MAX
Power to max, independent from the model
The function generator is now configured and sequence 12 is set up. You may start to
function generator now and control it remotely:
No. Command
Description
24
INP˽ON OUTP˽ON
Switch the DC input resp. DC Input of your unit on
25
FUNC:GEN:WAVE:STAT˽RUN
Start the function with RUN. After 60 s, the function will stop.
26
FUNC:GEN:WAVE:STAT˽STOP
Stop/abort function run. The DC input/output will remain on at first
and can be switched off with the dedicated command, if necessary
27
FUNC:GEN:SEL˽NONE
Parameter NONE will leave function generator mode
7.12.18.3
Command Sequence for the XY Generator
Configuration and loading of table data for XY generator is very similar to the procedure of
the arbitrary generator. Let’s say you want to make the DC input current of an electronic
load react to the input voltage. This is were the XY generator suits well with its IU function.
The IU table with its data determines the current to draw from the source for the entire
input voltage range (0...125% U
Nom
), which is resolved in 4096 values. With this you can
define everything you want, like for example the current to remain 0A below a certain input
voltage threshold. The desired current curve could be created in Excel or similar tools and
exported as CSV file. Because the measurement range for the reference value is defined as
0...125%, but for the depending value it is only 0...100%, the 100% for the depending value
is already at table entry 4096/1.25 = 3276.
There is furthermore a global power limitation, so the unit cannot make 100% voltage at
100% current. When creating the table in Excel or similar, it might help to add another two
columns (which are later not exported to CSV, of course). One column, where the
referenced value is distributed between 0....125% nominal value over the 4096 entries, and
another where the power is calculated for every entry (P = U * I), to find out which of the
entries could not be physically realized by the unit.
Caution!
It is not advisable to have big value differences between two or a group of
consecutive table entries. Rather use values that make voltage/current change
“softly”.
No.
Command
Description
1
FUNC:GEN:SEL˽IU
Select the IU function for the XY generator use: I = f(U). By sending this
command the unit will switch to function generator mode
2
FUNC:GEN:XY:LEVEL˽0
Select table entry 0 for writing
3
FUNC:GEN:XY:DATA˽0
Write a current value to the table entry, here: 0 A (random value)
...
8192
FUNC:GEN:XY:LEVEL˽4095
Select table entry 4095 for writing
8193
FUNC:GEN:XY:DATA˽120
Write a current value to the table entry, here: 120 A (example)
8194
FUNC:GEN:XY:SUBMIT
Submit all data
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