Manual

© EA Elektro-Automatik in 2022, this information is subject to change without notice 6933200840_manual_elr_10000_2u_3kw_en_02
3.10. 8 Trapezoidal function
The following parameters can be congured for a trapezoidal function:
Parameter Range Description
Amplitude (A) 0...(rated value of U or I - |offset|) Amplitude of the signal to be generated
Offset (O) 0... (UNom - Amplitude) or 0...
(INom - Amplitude)
Offset, based on the foot of the trapezium
Time t1 0.1 ms...36,000,000 ms Time for the positive slope of the trapezoidal wave signal.
Time t2 0.1 ms...36,000,000 ms Time for the top value of the trapezoidal wave signal.
Time t3 0.1 ms...36,000,000 ms Time for the negative slope of the trapezoidal wave signal.
Time t4 0.1 ms...36,000,000 ms Time for the base value (=offset) of the trapezoidal wave signal
Schematic diagram: Application and result:
Offset
t
U,I
Amplitude
t1t2 t3 t4
Offset
t
U,I
Amplitude
t1t2 t3 t4
Same as with other functions the generated signal can be applied to the
set value of voltage (U mode) or to the current (I mode). The slopes of the
trapezium can be varied by adjusting the times for rise and fall separately.
The periodic duration and repetition frequency are the result of the four
adjustable time values. With suitable settings the trapezium can be
deformed to two triangular or two rectangular pulses. It has, therefore,
universal use.
3.10.9 DIN 40839 function
This function is based on the curve dened in DIN 40839 / EN ISO 7637 (test impulse 4), and is only applicable to voltage.
It shall replicate the progress of automobile battery voltage during engine starting. The curve is divided into 5 parts (see
diagram below) which each have the same parameters. The standard values from the DIN are set already as default values
for the ve sequences.
The following parameters can be congured for the single sequence points or the entire function:
Parameter Range Seq Description
Start 0...U
Nom
1-5 Start voltage of the ramp in part 1-5 (sequence point)
Uend 0...U
Nom
1-5 End voltage of the ramp in part 1-5 (sequence point)
Time 0.1 ms...36,000,000 ms 1-5 Time of the ramp
Cycles 0 / 1...999 - Number of times to run the entire curve (0 = infinite)
Time t1 0.1 ms...36,000,000 ms - Time after cycle before repetition (cycle <> 1)
U(Start/End) 0...U
Nom
- Voltage setting before and after the function run
I/P 0...I
Nom
/P
Nom
- Set values of current and power