6RL SERIES OPERATION MANUAL
SECTION 7: REMOTE PROGRAMMING
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2018 by Adaptive Power Systems, Inc. (APS) • All Rights Reserved • No reproduction without written authorization from APS.
6RL Series Regenerative DC Load Operation Manual
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Now it is advised to also define the set values which are not affected by the table, else the
function would run without any effect. It means, if you load a UI table, the voltage is set
from values in the table, but current and power are static and the values you can adjust for
U, I and P in normal operation are not effective here.
For an IU table, voltage and power are static. You can set the static values to any value you
like, but in order for the static set values not to interfere in the UI or IU function execution,
it is recommended to set both to maximum:
No.
Command
Description
8195
VOLT˽MAX resp. CURR˽MAX
Set voltage, for an IU function, respectively current, for an UI function,
to maximum
8196
POW˽MAX
Power to max, independent from the model
After this, the function generator is configured and the IU table is loaded. Now the
function can be started by remotely controlling the generator.
No.
Command
Description
8197
INP˽ON OUTP˽ON
Switch the DC input resp. DC Input of your unit on
8198
INP˽OFF OUTP˽OFF
Switch the DC input resp. DC Input of your unit off to make the function
stop
8199
FUNC:GEN:SEL˽NONE
Parameter NONE selects no function generator type and leaves the
function generator mode
7.12.18.4
Command Sequence to Generate a Rising Ramp
Before you can configure the arbitrary generator for a ramp, it is necessary to think about
the best way to achieve the ramp generation. It is important to keep in mind that the
arbitrary generator stops at the end of the function run, unless you set the repetition to
infinite. After a stop, the DC Input remains switched on. In case of a ramp, this is wanted,
because the end value shall usually remain set for time x. However, the unit will go to static
mode again, setting the static set values of U, I and P. The static values also apply for the
period before the function run and when the DC Input/input is already switched on.
The stop action and the static values are thus a little problematic for the ramp function.
Why? Supposed that you wanted to have a DC load generate a ramp starting from 0 V. The
static value for U (voltage) would then be set to zero. But after the function stop, the unit
would also set 0 V and the voltage would drop from whatever value has been set during the
function run. Conclusion: the static value of voltage has to part of the function.
In order to achieve this, the function has to consist of two parts: one for the rising or falling
ramp and the other for the static value. This can be done using two sequence points of the
arbitrary generator.
Assumption: the ramp shall start from 0 V and rise to 50 V within 6 seconds. The end voltage
shall remain constant for 3 minutes (the time can be varied at will). We are going to use
sequence points 1 and 2. Remote control is already active, we only need to configure. Since
the ramp will make the voltage rise linearly, using only the DC part of a sequence point, the
parameters for the AC part (indexes 0 - 4) should be set to zero, in order to avoid
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