Step Function; Step Count; Entering Stepping Mode Value - Ametek Amrel PLA Series Operation Manual

STEP FUNCTION

The eLoad provides 256 points for self-pro gramming capability for which parameters can be programmed in the Menu
function. This feature allows the users to create a mini program and automate the control of the eLoad without the need
of computer, GPIB, USB, ETHERNET or RS -232 communication interface. The user is able to set Pro gramming Points,
Loop Number, Step Mode and Time Duration (dwell time).
At the Meter Mode, press the STEP key. This will lead eLoad to its step entry menu. Press the STEP menu button to
select between time duration (dwell time) and step value for each step number. To change value and time duration for
each step press and hold the encoder to select and clear to exit. Turn the encoder to increment/decrement the step
number.
After configuring each step, the step sequence will need to be defined. Two parameters will determine the behavior of the
overall step cycle. Under MENU → LOAD CONTROL → STEP PARAM. , there are two parameters, (STEP) COUNT
and (STEP) MODE.

STEP COUNT

COUNT is the number of loops the step program will be repeated. The stepping function provides loop control with
COUNT, which instructs the eLoad to repeat the stepping function, based on the COUNT. For instance, if the COUNT is
set to 10 and the eLoad will cycle the desired steps 10 times. If the COUNT is infinity, then eLoad will cycle the stepping
infinitely.
To configure the Step Count parameter, Press the "Menu/Local" key press ENTER, then use the encoder  to select the
STEP PARAM. function then the "ENTER" key. Turn the encoder  to select the Step COUNT then press the
"ENTER" key twice to enter the value or use the encoder  to increment or decrement the value. Press the "ENTER"
key to confirm the selection. Press "CLEAR" key to exit from the STEP Configuration Menu.
STEP MODE
MODE provides selection to the different types of step operation: STEP, STEP AUTO, and STEP ONCE.
1. Step will initiate step operation without a trigger signal and repeat until end of the loop number.
2. Step Auto will wait for a *TRG command or TRIG (via PC SCPI command) or front panel trigger to initiate the
step operation and will end at the end of the loop number.
3. Step Once will activate one step for every trigger signal received.
To configure the Step MODE parameter, Press the "Menu/Local" key press ENTER, then use the encoder  to select
the STEP PARAM. function then the "ENTER" key. Turn the encoder  to select the Step MODE then press the
"ENTER" key. Different step MODE selections will appear, select the appropriate choice using the encoder  and
press "ENTER"" to confirm the selection. Press the "ENTER" key to confirm the selection. Press "CLEAR" key to exit
from the STEP Configuration Menu.
ENTERING STEP MODE VALUES
Example:
The test application requires (3) steps to be performed in the Step Mode with the following criteria. Step (1) in the CC
mode with 5 amps for 800 ms, step (2) in the CC mode with 10 amps for 400 ms, and step (3) in the CC mode with 50
amps for 200 ms.
Note: CC Mode has 3 ranges. Therefore, if stepping values are in the manual high range, main level value must be set to
high range or switch to auto range to cover all current step entries.
Choose the STEP transient mode by toggling the Step Parameters selection to Step via the Menu → Load Control ->
1.
Step Parameters. Press enter to choose the menu selection and turn the encoder  to select the STEP transient
mode and press ENTER key to confirm.
M470039-01 REV-F Page 88