UMG 505: NETWORK ANALYSIS AND MAXIMUM DEMAND CONTROL


APPLICATION:
UMG 505 is a universal measuring device suitable for measurement, storage and supervision of electrical parameters in low and medium networks. The measurement is designed for single and three phase system with (or) without Neutral Conductor. With the Emax program, it is possible to reduce the real power maximum by a short term disconnection of consumers or the connection of generators. Further, the system allows a time based switching of power by the integrated weekly time controller.

Possible applications are:
Supervision and control of electrical quantities in energy distribution.
Measured value transducer for PLC.

SALIENT FEATURES
High measuring accuracy
Indication of: Voltage, Current, Neutral Current, kW ,KVA, Power Factor, Frequency, kWh, kvarh, THDU, THDI and Individual Harmonics from 1st Order to 20th Order etc.
Harmonic Analyzer 1-20 Harmonics V and A
4 Analogue outputs
4 Digital inputs
5 Digital outputs
Weekly time controller
Maximum demand controller
RS232 / RS485 / LON
LON* / Modbus RTU
Summer / Wintertime Changeover

OPERATION:
UMG 505 Device measures and digitizes the effective values of Voltages and Currents in a network. Two random tests are carried out in each second. From these scanned values, the microprocessor calculates the electrical quantities.

STORAGE:
Peak Values, Lowest Values and Programmed Data are saved in a Battery Buffered Memory. Selected values and net breakdown and return are saved in the Ring Buffer with date and time.

MEMORY:
Memory is divided into three areas. Event Memory, Maximum & Minimum Storage and Ring Buffer. All Emax monthly peak values are saved for each months for all tariffs.

EVENT MEMORY:
In the event memory, the following events can be saved with date and time :

Deletion of the event Limit Violations
Changing of the digital inputs
Breakdown and return of the auxiliary voltage
Changing of the digital Emax outputs
Breakdown and return of the measuring voltage

o 9999 events can be saved. The reading out is possible with the programming and reading out software PSW505 and a PC only.

RING BUFFER :
For the storage in the ring buffer, the following values can be selected :-

Mean values of the measuring values
The fixed energy meters.
Reset of Emax measuring period.

The possible storage time for saving the mean values of U1, U2, U3, I1, I2, I3, P1, P2, P3 over an averaging time of 15 minutes is about one year. Six windows can be programmed for saving measured values. An upper and lower threshold can be selected, and data are saved within or out of these thresholds.

SUMMER - / WINTER TIME CHANGE OVER:
The following possibilities are at your option:
OFF – No change over.
ON – Own change over times.
EU – listed change over, based on the procedure of the European community.

MEASURED VALUE INDICATION / ROTATION:
The excellent LCD display in combination with the function keys displays the selected measured values (actual-, lowest-, peak-, and mean values). With the UMG 505 up to three measured values can be indicated simultaneously, and up to 140 data fields can be created individually by the software PSW505. For the measured value rotation, a changing time of 1 .. 9999 seconds can be set along with a selection of the measured values.

DIGITAL INPUTS:
The 4 optical inputs are assigned to the internal inputs 1 .. 4, and all in all, the UMG 505 has 20 internal inputs. To the internal inputs 5 .. 12, the 8 inputs of the LONbus interface (option) are assigned, and to the internal inputs 13 .. 20, the 8 inputs of the Modbus interface (option) are assigned. The condition of the digital inputs 1 .. 4 can be read via the serial interface.
Each of the 20 internal inputs can be assigned to one of the 5 input channels. Each of the input channels can change over an energy meter, reset the Emax time, synchronize the internal clock or select another target value for the Emax program.
Two of the digital inputs can be combined by AND, and the result can be assigned to an input channel. To each of the digital inputs 1 .. 4, an event counter is assigned. If a function, except pulse valency, is assigned to a digital input 1 .. 4, all changes at the input are saved with date and time.

Digital Inputs: The digital input 4 can be used as pulse input for real energy measurement (max. 10 Hz).

EMAX TARGET VALUE:
For the Emax program, up to 5 target values are programmable. A target number is assigned to each target (1-5). Via the target number, the change over is carried out. The target number can be selected via the internal switching clock or via the digital inputs of the UMG 505.

DIGITAL OUTPUTS:
The device has 5 digital transistor outputs. These outputs are depicted on display with out1 up to out5. Each of the outputs can be assigned to a data source. 6 different data sources are at option:
Limit – outputs.
Time controlled outputs.
Emax digital outputs.
LON-Bus (Option)
Energy Meter
Each data source can be assigned to one output only. If an output is assigned to an energy meter, the output works as a pulse sender. The signals of all data sources, except energy meters, can also be inverted.


SUPERVISION OF LIMITS:
For the supervision of limits, 5 threshold outputs can be programmed. To each threshold output, up to three comparators (A, B, C) can be assigned. For each comparator the following can be programmed:
2 limits and 2 measured values or
2 limits and 1 measured value or
1 limit and minimum disconnection time.

Threshold violations are saved in the event memory with date and time, and can be given out at a digital output by choice.

PULSE OUTPUTS:
The five digital outputs in the UMG 505 can be used as pulse outputs. The minimum pulse width is 50 ms and maximum frequency is 10 Hz.

WEEKLY TIME CONTROLLER:
The time controller of the UMG 505 has 100 time channels. Each time channel depicts a period of time. The time channel is depicted by a connection and a disconnection time. The connection and disconnection time is described by day, hour and minute.

Each time control channel can control a time control output, an Emax target and an energy meter simultaneously.

In the programming of the digital outputs, a time control output can be assigned to a digital output.

EMAX DIGITAL OUTPUTS:
The Emax program controls up to 5 Emax digital outputs. A priority 0 .. 9 can be assigned to each Emax digital output.

Parameters:
Priority 0 .. 9 (0=OFF)
Emax digital outputs 1 .. 5
Connection power 0 W .. 9999MW
Minimum connection time 20 .. 9999seconds
Minimum disconnection time 20 .. 9999seconds

ANALOGUE OUTPUTS:
The UMG 505 has 4 analogue outputs. The analogue outputs have a common ground and are separated galvanically against the other inputs and outputs of the UMG 505. For the operation of the analogue outputs an external auxiliary voltage of 20 Volts up to 30 V DC is needed.
As sources for the analogue outputs, the following entities can serve :
Measured values
The internal Emax analogue outputs 1 .. 4 andValues, which are given over Modbus interface to the UMG 505.


EMAX ANALOGUE OUTPUTS :
UMG 505 has got 5 digital and 4 Emax outputs internally. Each of the internal Emax analogue outputs can be assigned to an external analogue output. If a generator should be controlled by an Emax analogue output, the internal Emax analogue output cannot be assigned to an “analogue output’ only, but also to a “digital output”. The “digital output” is active, whenever the calculated current of the controlling Emax analogue output is bigger than 0mA. Therefore the “Digital output” can be used as starting signal for generator control. For the Emax analogue outputs, the following parameters can be set:

Description Setting Range
Priority 0 .. 9 (0=OFF)
EMAX Analogue output 1 .. 4
Maximum connection power 0 W .. 9999 MW
Minimum connection power 0 W .. 9999 MW
Consumers  
Max-Spare power 0 W .. 9999 MW
Run Up Time 10 .. 9999 Sec.
Generator  
Minimum run time 0 .. 9999 minutes
Handling Time 0 .. 99 seconds



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