EAFAccPlsQty,EARAccPlsQty,ERFAccPlsQty andERVAccPlsQty of the energy meteringfunction and then the pulse counter can be set-up to present the correct values by scaling inthis function. Pulse counter values can then be presented on the local HMI in the same wayand/or sent to the SA (Substation Automation) system through communication where thetotal energy then is calculated by summation of the energy pulses. This principle is good forvery high values of energy as the saturation of numbers else will limit energy integration toabout one year with 50 kV and 3000 A. After that the accumulation will start on zero again.17.2.3 Setting guidelines SEMOD175556-4 v6The parameters are set via the local HMI or PCM600.The following settings can be done for the energy calculation and demand handling functionETPMMTR:GlobalBaseSel: Selects the global base value group used by the function to define (IBase),(UBase) and (SBase).Operation:Off/OnEnaAcc:Off/On is used to switch the accumulation of energy on and off.tEnergy: Time interval when energy is measured.tEnergyOnPls: gives the pulse length ON time of the pulse. It should be at least100 ms whenconnected to the Pulse counter function block. Typical value can be100 ms.tEnergyOffPls: gives the OFF time between pulses. Typical value can be100 ms.EAFAccPlsQty andEARAccPlsQty: gives the MWh value in each pulse. It should be selectedtogether with the setting of the Pulse counter (PCGGIO) settings to give the correct total pulsevalue.ERFAccPlsQty andERVAccPlsQty : gives the MVArh value in each pulse. It should be selectedtogether with the setting of the Pulse counter (PCGGIO) settings to give the correct total pulsevalue.For the advanced user there are a number of settings for direction, zero clamping, max limit,and so on. Normally, the default values are suitable for these parameters.1MRK 511 358-UEN A Section 17Metering403Application manual
