Download DLM600W_Video_Script_Rev-2

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Hi, my name is Edward Guillergan and I’m one of AMETEK
Programmable Power’s Applications Engineers. I’m here to provide an
overview of one of our company’s flagship DC programmable power
supplies, the Sorensen DLM600W series.
The Sorensen DLM600W series of programmable power supplies is
designed to provide continuous variable output voltage and current for
a broad range of applications in a compact 1U high, half rack wide
chassis.
Our agenda will be providing you with an overview of the unit with
regards to the specification, control, capability, power on, functional
check and application.
-Located underneath the unit is the power supply
label which conveys the characteristics of the unit
such as the input voltage, input current, input
frequency, output power, and other electrical
specifications. For the Serial #, the first 4 digits
indicate the year and week of the manufacturing
date of the unit. This info is important with regards
to warranty status.
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-This is the standard front panel of the DLM600W model
series. We are showing the DLM40-15 version. This
designation indicates the unit range of 0-40V and 0-15A.
There is a variety of voltage/current combinations ranging
up to 300V max and 75A max at 600W output. Analog
programming/monitoring for voltage/current comes
standard. Remote interface options also available include
optically isolated analog programming/monitoring for
voltage/current, GPIB/RS232, and ethernet/RS232.
-This is the rear panel of the unit. The output portion
is protected by a safety cover. The output terminal
configuration will vary depending if the unit is low
voltage (5-60V) or high voltage (80-300V).
-This particular unit has the GPIB/RS232 remote
interface.
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-As far as remote interfaces go, a standard unit
comes with the analog programming/monitoring.
You can also have the GPIB/RS232 option,
which I just showed you, the ethernet/RS232
option, and the optically isolated analog
programming/monitoring. Note that you can only
choose one of these options as they cannot be
combined.
-Use a power cord with the unit for the AC input
connection. The DLM600W model series has a
universal auto ranging AC input at 90-132V and
180-265V.
-For the time being, make sure there aren’t any
connections on the rear panel other than the
power cord. Now we’re ready to power up the
unit.
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-The front panel control consists of the Power On/Off button. Once
you press the button, the power supply will execute a boot up routine
for about 7 seconds and as you can see, all the LEDs are lit up with the
fans running at maximum speed.
-At this point, you can now start using the unit. I will go through
further details and examples conveying the functions of the unit.
-After being booted up, this conveys the default settings of the unit
shipped straight from the factory.
-These are the Voltage (1) and Current (2) knobs. They are 10 turn
potentiometers. Since we don’t have a load connected at the moment,
make sure you set at least a small amount of current before you start
increasing the voltage so you can see a voltage output.
-Before we turn the output on, we’ll set our Voltage
and Current limit values using the front panel knobs.
If we press and hold the V/I (Voltage/Current)
Preview button, we can see what our output will be
when we turn on the output.
-As you can see from the DC VOLTS and DC AMPS
display, we have set the voltage to 25V and the
current limit to 15A. The actual output will vary
depending on what your load is.
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-Next, we’ll configure the Over Voltage Protection.
The OVP Set is an adjustable potentiometer which
you can configure using an insulated flathead
screwdriver.
-The default factory setting of the OVP is 110% of the
rated voltage of the unit, in our case, 44V. You can
configure it between 5-110% of the power supply
voltage rating.
-You can preview the set point value by pressing and
holding the OVP Preview button while adjusting.
We’ll configure the OVP set point to 30V.
-I will now power down the unit and set up a 2.4 ohm
load.
-We’ll then again power up the unit and turn on the
output by pressing the Output button. As you can see,
since we have a 2.4 Ohm load, our actual output is 25V
and 10.43A.
-We’ll increase the voltage to test out the OVP set point
we set earlier at 30V.
-As you can see, once the load starts drawing 30V, the
OVP fault will activate causing the output to go to zero
and OVP LED indicator to light up. The OVP function is
helpful to protect loads not specced to handle certain
voltages.
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-Other LED indicators on the front panel include the FAULT
LED. It can trigger from either over temperature shutdown,
logic supply fault, cooling fan fault, or the other fault
summaries listed in the manual.
-The REM LED activates when you’re controlling the unit via
remote interface (analog, GPIB/RS232, ethernet/RS232).
-The EXT OFF LED activates when a shutdown signal is sent
via remote interface (analog, GPIB/RS232, ethernet/RS232).
This is an indicator to the user that the unit was shutdown
remotely.
-There’s also a LOCAL(REMOTE) button which will allow you
to switch between Local and Remote interface control.
-The DLM600W model series has 2 modes, constant voltage
(CV) and constant current (CC). You can switch between
modes continuously without interruption of the output.
-Now I’ll show you an example of how the constant voltage
(CV) and constant current (CC) operates. Which ever mode
you’re in, it is indicated through the VOLTAGE (1) or
CURRENT (2) LED on the front panel.
-I still have my 2.4 ohm load set up at the output. Before I
turn on the output, I will set my voltage to 23V and my
current limit to 10A. I check the value using the V/I
(Voltage/Current) PREVIEW button. Now, I can turn the
output on using the OUTPUT button.
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-As you can see, with the output on, my voltage is 23V
and my current is 9.59A due to my 2.4 ohm load.
-Anytime the load draws less then what I set my current
limit to, 10A, the unit is in constant voltage mode which
is indicative by the VOLTAGE (1) LED being lit up.
-Now I will increase my voltage and the current will
change as well with reference to the 2.4 ohm load.
-Once my unit starts to draw what I set my current limit
to, 10A, it will then switch to constant current mode as
indicative by the CURRENT (2) LED being lit up.
-I have given you a basic intro to the Sorensen
DLM600 model series.
-Prior to use with your application, please
reference the operation manual for safety
instruction, wiring requirements, specifications,
protection diodes, remote/local sense,
remote/local programming.
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For more information, please visit our website at
www.programmablepower.com
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