Product overview
EL34xx
27
Version: 1.5
Fig. 18: Representation of the power quality factor calculation
As can be seen for the time value 120, the calculation method is chosen in such a way that even very short
voltage drops cause a clear signal deflection.
The value above which the power supply is to be regarded as "sufficiently good" is strongly dependent on the
connected application. The more sensitive the application, the higher the minimum limit value of the PQF
should be.
To adapt the power quality factor to your mains supply, enter the nominal voltage and frequency in CoE
object "
0xF801 PMX Total Settings PQF [
". This can also be done via the "Settings" tab, which
summarizes all the important terminal setting options in a user-friendly manner.
Voltage zero crossing
The EL3443 and EL3453 have the ability to determine the exact time of a voltage zero crossing. However, in
order for this to be transmitted to a higher-level controller in a meaningful manner, the controller and the
EtherCAT Terminal must have the same time base. Using distributed clocks technology, an EtherCAT
system provides such a common time base (for details see
). In order to be able
to use these, the EL3443 must be in "DC synchronous" mode and the EtherCAT master must support the
corresponding function.
Once these basic requirements have been met, the EL3443 and EL3453 provide the DC time of the
penultimate zero crossing. In order to facilitate exact determination of the fundamental wave, the voltage
signal to be evaluated must first be filtered, which inevitably entails a delay. In addition to the time of the
voltage zero crossing, the EL3453 also determines the respective current zero crossings.
Statistical evaluation
In addition to the cyclic data, the EL34xx terminals also produce statistical evaluations over longer periods
(can be set in the CoE: "
" is set to 15 minutes. The clock available for this purpose in the terminal can not only be read out via
the CoE object "
Содержание EL34 Series
Страница 1: ...Documentation EL34xx 3 phase energy and power measurement terminals 1 5 2019 09 05 Version Date ...
Страница 2: ......
Страница 52: ...Mounting and wiring EL34xx 52 Version 1 5 Fig 35 Other installation positions ...
Страница 58: ...Mounting and wiring EL34xx 58 Version 1 5 EL3453 LEDs and connection Fig 40 EL3453 LED s ...
Страница 92: ...Commissioning EL34xx 92 Version 1 5 Fig 86 Incorrect driver settings for the Ethernet port ...
Страница 103: ...Commissioning EL34xx 103 Version 1 5 Fig 105 EtherCAT terminal in the TwinCAT tree left TwinCAT 2 right TwinCAT 3 ...
Страница 130: ...Commissioning EL34xx 130 Version 1 5 Fig 147 Process Data tab SM3 EL3443 ...
Страница 131: ...Commissioning EL34xx 131 Version 1 5 Fig 148 Process Data tab SM3 EL3453 ...
Страница 132: ...Commissioning EL34xx 132 Version 1 5 Fig 149 Process Data tab SM3 EL3483 ...
Страница 160: ...Commissioning EL34xx 160 Version 1 5 Index F802 PMX Guard Settings ...
Страница 183: ...Commissioning EL34xx 183 Version 1 5 Index F802 PMX Guard Settings ...
Страница 205: ...Commissioning EL34xx 205 Version 1 5 Index 1C13 TxPDO assign ...
Страница 214: ...Commissioning EL34xx 214 Version 1 5 Index F802 PMX Guard Settings ...
Страница 242: ...Commissioning EL34xx 242 Version 1 5 Index 1C13 TxPDO assign ...
Страница 259: ...Application examples EL34xx 259 Version 1 5 7 Application examples ...