User manual

Page 37
EA Elektro-Automatik GmbH
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Germany
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www.elektroautomatik.de
[e-mail]
ELR/ELM 5000 Series
3.8 The sequence generator
3.8.1 Introduction
The built-in sequence generator is able to create a progress of U, I and P over time.
Thisprogressisbasedon100freelycongurablesequencepoints,whichbuildasequence.Congurationofthe
sequence and handling of the sequence run can be done manually or via remote control. The entire sequence is
stored in the load module unit and the single sequence points can be selected, edited and run in an arbitrary number.
Furthermore, the sequence can be saved to or loaded from an USB stick via the front side USB port. This allows
for quick switching of multiple different sequences, which can be edited or created on a PC due to the open se-
quenceleformat(CSV).
3.8.2 Method of operation
Thepointsofaconguredsequenceareprocessedonebyone,switchingtothenextpointaftertheadjusted
time has elapsed, setting values of the next point in a step. It means, there is no linear progression between two
points and thus the resulting curve is rectangular. It is not possible to generate ramps, however, it is possible to
use very small steps in amplitude and time to achieve a stairway shaped progression which is similar to a ramp
(see examples below, Figure 15).
The user can select any number of sequence points (1-100) to run by setting a start and end point. They are pro-
cessed in ascending order and without delay. The selected points form a block. This block can be repeated 1-999
timesorinnitely,untiltherunstopsautomaticallyorbymanualinteraction.
Examples for possible sequence progressions (P = point of a sequence):
Start
P1
P2
P3
P4
St op
t
U, I, P
Start
P1
P2
P3
P4
St op
t
U, I, P
P5
Figure 13 - Simple sequence with equal periods Figure 14 - Simple sequence with varying period
Start
P51
P52
P53
St op
t
U, I, P
Figure 15 - Sequence with simulated ramp of 50 steps