Beckhoff EL3413-0000, Documentation

Page: 137 / 200

Commissioning
EL34x3 137 Version: 4.4
Sample 2
To delete the energy values of all channels manually enter 0024
hex
in index 0xFB00:01 [
}
153] .
5.5.2.2 PM Inputs Channel 1/2/3
STATUS
The following useful status information for the respective channel can be read in with the “STATUS”
structure.
• Overvoltage (voltage is greater than 415 V)
• Undervoltage (voltage is smaller than 5 V)
• Overcurrent (current is 1.1x greater than the full scale value)
• Phase sequence cw (clockwise-rotating field)
• Phase sequence ccw (counter-clockwise rotating field)
• Missing zero crossing
• TxPDO State
• TxPDO Toggle
Current
Cyclic measurement of the current of the respective phase.
Voltage
Cyclic measurement of the voltage of the respective phase.
Active power
Cyclic measurement of the active power of the respective phase.
Index
Indicates which parameter the “VariantValue” is currently measuring.
VariantValue
There are several parameters behind the VariantValue. It is possible to read in the following values for the
respective channel.
• the apparent power
• the reactive power
• the energy
• the power factor λ
• the frequency
• the negative energy
• the angle α of the respective phase to phase L1
The individual parameters are switched over with the help of the respective cyclic output variable “Index”.
Interpretation of output values
For time-averaged output values such as RMS values, a markedly longer change of the output
value compared to the measuring cycle time can occur in the event of steep signal changes.