Power Quality Monitoring
Power Quality Monitoring Power Quality Monitoring
▼Chapter 3Data collection instrumentProData ® data loggerThe ProData ® data logger is suitable for collecting data and recordingmeter values, operating conditions and process data. The datacan be used for analysing energy consumption, operating hours orfor monitoring switch conditions and faults in buildings andcompanies etc. The alarm for faults or limit value violations takesplace through the relay outputs, the analogue modem or field bus.Main featuresThe collection and recording of meter values, operatingconditions and process data16 digital inputs64 bit counter128 programmable comparatorsRS232, RS485, modem, LON, Modbus or Modbus-master1 analogue input1 temperature input2 relay outputsIncluding GridVis software▼Data recordingThe analogue measurement values can be recorded in set time intervals (1 sec ...12h) as minimum, average and maximum values. In theset time intervals (1 sec ...12h), the difference between the overall meter readings and the meter reading at the last recording time is shown.Condition changes to the inputs can be provided with a time stamp (1 sec resolution) and collected. Various internal events (e.g. failure andreturn of the electricity supply) are registered. Condition changes to the programmable limit values/alarm triggers can be recorded as anevent with a time stamp. All recorded values and events are recorded in a ring buffer. This consists of 430KB and is sufficient for 3 monthsif the digital counters are recorded every 15 minutes.Application example –photovoltaicUMG 96 UMG 96UMG 96 UMG 96S0-OutputS0-OutputS0-OutputS0-OutputPT100LiYcY 4x0,5Maximal 100mPSTNSolar intensity measurement107
ProData ®Analogue inputs1 analogue input 0 (4) – 20mA, -20/20mA programmable1 input for temperature sensor: PT100, PT200, PT500, PT1000, NTC10k or KTY83The measurement values can be read through Modbus. The temperature measurement value and the scaled 20mA measurement values areavailable through LON.Relay outputs2 internal relay outputs (change over contact)31 decentralised relay outputs (optional)The relay outputs can be used as: Threshold monitoring, alarm contact and annual time switch. The ProData ® can handle inModbus-master operation up to 31 de-centralized outputs.Digital inputs16 digital inputs can be used as: An overall pulse counter at each input – maximum frequency 50Hz, 64 bit counter Pulse meter with automatic resetting in set time intervals between 1 sec and 12 hours orexternal synchronisation with automatically saved meter reading at the last reset Collection of all switch-on and shutdown times for each input e.g. operating hourmeter/service intervals. Resolution: 1 sec, maximum time >100 years Monitoring function for switch-on and shutdown times Frequency measurement on each input for monitoring flow quantities, power etc.The stated measurement values can be read through the Modbus. The overall meter readings are available as 32 bit values throughLON. The digital inputs (4x4) can be set as pulse (S0 interface) or as signal inputs using jumpers.Threshold comparatorThe ProData ® has 128 programmable comparators. These compare the input value with the upper and lower thresholds (with hysteresis)and check whether the value is within or beyond of the two threshold levels. The result can be linked to another comparator resultusing a logical link (AND, OR, NOT). Various actions can be taken depending upon the result. Switch-on and shutdown delays canbe programmed separately.Every internal available measurement value or register contents can be used as an input value for a comparator. In the Modbus-masteroperation, a measurement value or register of a slave unit can be read and used as an input value.The following actions are possible: Switch on or switch off relay output or LED Switch on relay output or LED for a programmable time Set internal status marker Write the comparator result in a register of a Modbus slave Record event in the ring buffer Alarm through an analogue modem, text message through a GSM modemThe internal status flags (4 pcs) can be read out through LON. The relays and LEDs can be switched through LON as well.108
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▼Chapter 3Data collection instrumentProData ® data loggerThe ProData ® data logger is suitable for collecting data and recordingmeter values, operating conditions and process data. The datacan be used for analysing energy consumption, operating hours orfor monitoring switch conditions and faults in buildings andcompanies etc. The alarm for faults or limit value violations takesplace through the relay outputs, the analogue modem or field bus.Main featuresThe collection and recording of meter values, operatingconditions and process data16 digital inputs64 bit counter128 programmable comparatorsRS232, RS485, modem, LON, Modbus or Modbus-master1 analogue input1 temperature input2 relay outputsIncluding GridVis software▼Data recordingThe analogue measurement values can be recorded in set time intervals (1 sec ...12h) as minimum, average and maximum values. In theset time intervals (1 sec ...12h), the difference between the overall meter readings and the meter reading at the last recording time is shown.Condition changes to the inputs can be provided with a time stamp (1 sec resolution) and collected. Various internal events (e.g. failure andreturn of the electricity supply) are registered. Condition changes to the programmable limit values/alarm triggers can be recorded as anevent with a time stamp. All recorded values and events are recorded in a ring buffer. This consists of 430KB and is sufficient for 3 monthsif the digital counters are recorded every 15 minutes.Application example –photovoltaicUMG 96 UMG 96UMG 96 UMG 96S0-OutputS0-OutputS0-OutputS0-OutputPT100LiYcY 4x0,5Maximal 100mPSTNSolar intensity measurement107