PQ Plus UMD 701 Operating Manual
Operating Manual for
UMD 701
Short version 2.0
Contents
1
General Description 1
2
Operating the Meter 2
2.1 Safety requirements when using UMD 701
2.2 Installation of the instrument
2.2.1 Supply voltage
2.2.2 Measured voltage
2.2.3 Measured currents
2.2.4 Communication peripherals
2.2.5 Outputs and inputs
2.3 Downloading data to PC
2.4 Energy meter readings
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2
3
3
3
4
4
5
6
6
3
Technical Specifications 7
3.1 Basic Parameters
3.2 Measured Quantities
4
Maintenance, Service, Warranty 11
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7
8
1
1 General Description
The UMD 701 is specially designed for monitoring of energy and power quality in advanced power systems and
smart grids. It is intended to be used mostly for DIN rail mounting. This display-less design with multiple
communication options is suitable for a wide spectrum of automation tasks in modern buildings, distributed
power generation, remote supervision of the infrastructure and also remote load management. Absence of local
panel controls (display and keyboard) limits possibilities for hostile user interaction. To protect the actual
setup and collected data each instrument can be locked by a custom pin. Inputs and outputs can be custum
programmed for basic local control applications. It uses standard RS-485 serial line for communication with
remote control systems. Optionally it can be equipped with other communication peripherals such as secondary
RS-485 or M-Bus communication line, or USB, WiFi and Ethernet interface.
It is equipped with one voltage input and two, four or eight current inputs. The instrument can be also
supplied with for current transformers with X/100 mA ratio, for special Hall probes (to measure DC or AC+DC
currents) with ➧4 V output, or Sxxx and Pxxx option for external through-hole or clamp-on current sensors for
direct measuring up to 2400 A nominal current according to the type of the current transformer.
Warning !
The X/100mA, Sxxx and Pxxx, X/➧4 V options are specially designed to be used only in
combination with provided external current sensors which are supported with the respective option.
The UMD 701 is available in several configurations according to the customer requirements1. See the ordering
scheme on figure 1.
1
Complete and most up to date list of optional and other accessories are available on request from the device vendor.
2
Instrument model
UMD = Universal Meassering Device
Measuring inputs
1 voltage + 8 current inputs
Auxiliary power supply
U = 75 V ÷ 275 VAC, 75 V ÷ 35O VDC
Current inputs
X/1OOmA = 1OOmA AC (indirect measurement
Optional digital output
pulse output
Optional peripheral
two digital inputs
Optional expanding module
E = Ethernet interface
UMD 701
Figure 1: Schematics of the UMD 701 ordering options and variants. It includes special codes for proper current
and voltage rating options.
2 Operating the Meter
2.1 Safety requirements when using UMD 701
Warning !:
protection of persons and property against injury and electric shock.
❼
The device must be operated by a person with all required qualifications for such work and this person
must know in detail the operation principles of the equipment listed in this description!
❼
When the device is being connected to the parts which are under dangerous voltage it is necessary to comply
When working with the instrument it is necessary to perform all necessary measures for the
with all the necessary measures to protect users and equipment against injury with electrical shock.
❼
Person, performing the installation or maintenance of the instrument must be equipped with and must use
personal protective clothing and tools.
❼
If the analyzer is used in a manner not specified by the manufacturer, the protection provided by the
analyzer may be impaired.
3
58
21.5 10
60.6
30.3
106
UMD
UMD 701
X/4V
001
03
2014
99.8
90
45
62
❼
If the analyzer or its accessories appear to be impaired or not functioning properly, do not use it and send
it in for repair.
2.2 Installation of the instrument
Natural air circulation should be provided inside the distribution board cabinet, and in the instrument’s neighborhood. Especially underneath the instrument, no other instrumentation that is source of heat should be installed
or the temperature value measured may be influenced. A connection
2
mm
in case of all screw terminals.
wire’s
maximum cross section area is 2.5
The UMD 701 is primarily intended for DIN-rail mounting. Dimensions of the instrument are on figure 2.
There are also positions marked with dash dot lines of holes for wall-mounting with three screws.
Figure 2: Dimensions of the UMD 701 analyzer.
2.2.1 Supply voltage
Power supply voltage (options in ch. 3) must be connected to the terminals X1 and X2 via a circuit breaking
device (power switch – see installation diagram on figure 3). It has to be located left to the instrument and
reachable by the operator. The circuit breaking device must be identified as the equipment power disconnection
switch. A circuit breaker of the nominal value 1 A is a convenient circuit breaking device. Its function and
position has to be clearly identified (symbols
galvanically isolated from internal circuits.
2.2.2 Measured voltage
The measured voltage is connected to the terminal L1. Connect the neutral wire to the terminal N. Voltage
measurement inputs are connected with internal circuits over high impedance.
It is suitable to protect the measured voltage lines for example with 1A fuses of the required rating. Measured
voltages can also be connected via instrument voltage transformers. A connection cable maximum cross section
area is 2.5
2
mm
for voltage terminals.
‘0’
and
‘I’
acc. to IEC EN 61010-1). Internal power supply is
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