BMR PLA44 Troubleshooting guide

PLA 44
Power quality analyzer
User and service manual
version 1.4
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Content
1. Front panel.................................................................3
2. Device description......................................................4
3. Installation..................................................................4
4. onnection.................................................................5
4.1. Supply voltage...................................................5
4.2. Measuring inputs...............................................5
4.3. RS485................................................................6
4.4. Ethernet.............................................................6
4.5. USB...................................................................6
4.6. Temperature sensor...........................................6
4.7. Digital inputs / outputs........................................6
5. Operation...................................................................6
5.1. Numeric.............................................................7
5.1.1. Flicker.................................................................7
5.2. Harmonics..........................................................7
5.3. Vectors...............................................................7
5.4. Bar-graphs.........................................................7
5.5. Scope.................................................................8
5.6. Events................................................................8
5.6.1. List of events.......................................................8
5.6.2. Rapid Voltage hange (RV ).............................9
5.6.3. List of transients..................................................9
5.6.4. Power cuts..........................................................9
6. Device settings.........................................................10
6.1. Language.........................................................10
6.2. Measurement...................................................10
6.2.1. Network type.....................................................10
6.3. Analyser...........................................................12
6.3.1. Date and time....................................................12
6.3.2. Reset.................................................................12
6.4. ommunication................................................12
6.4.1. Ethernet.............................................................12
6.4.1.1 Web server...........................................................13
6.4.1.2 Modbus T P.........................................................13
6.4.1.3 FTP server............................................................13
6.4.2. RS485...............................................................13
6.4.3. onnection of PLA44 to LAN with NAT server..14
6.5. Events setting..................................................15
6.6. Transients setting.............................................15
6.7. RV and Ripple control...................................16
6.8. Information.......................................................16
7. Firmware update......................................................17
8. Technical features....................................................18
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1. Front panel
Picture 1: Front panel description
1. – key for entering the menu and parameters
2. – cursor key for moving up in menu and parameter change to higher value
3. – cursor key for moving down in menu and parameter change to lower value
4. – ES key for canceling or return
5. – Fn (zoom) key change function of other buttons
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2. Device description
Power quality analyzer PLA44 is designed for measurement and monitoring of electrical parameters in 2, 3 and 4
conductor networks and in TN and TT grids. PLA44 power quality analyzer architecture is based on fast 32 bits RIS
microprocessor which provides high computing power to assure the device being fully according the norm IE
61000-4-30 class A.
Parameter L1 L2 L3 L4 L1-2 L2-3 L3-1 ΣL1-L3 ΣL1-L4 Max Min AVG Maxavg Measuring range Displaying range Accuracy
Phase voltage ● ● ● ● ● ● ● ● 10 ... 600 V 0 ... 1 MV ±0,1 %
Line voltage ● ● ● ● ● ● ● 18 ... 1000 V 0 ... 1 MV ±0,1 %
Frequency ● ● ● ● ● 40 ... 70 Hz 40 ... 70 Hz 10 mHz
urrent ● ● ● ● ● ● ● ● ● 0,001 ... 6 A 0 ... 1 MA ±0,1 %
cosφ ● ● ● ● ● 0,01 L ... 0,01 0,01L ... 0,01 ±1 %
Power factor ● ● ● ● ● 0,01 L ... 0,01 0,01L ... 0,01 ±1 %
THDU L-N ● ● ● ● ● ● ● ● 0 ... 99,9 % 0 ... 99,9 % ±1 %
THDU L-L ● ● ● ● ● ● ● 0 ... 99,9 % 0 ... 99,9 % ±1 %
THDI ● ● ● ● ● ● ● ● 0 ... 99,9 % 0 ... 99,9 % ±1 %
Harmonics of voltage ● ● ● ● 0 ... 99,9 % 0 ... 99,9 % lass 1
Group of interharmonics U ● ● ● ● 0 ... 99,9 % 0 ... 99,9 % lass 1
Group of harmonics U ● ● ● ● 0 ... 99,9 % 0 ... 99,9 % lass 1
Harmonics P ● ● ● ● 0 ... 99,9 % 0 ... 99,9 % lass 1
Harmonics Q ● ● ● ● 0 ... 99,9 % 0 ... 99,9 % lass 1
Harmonics I ● ● ● ● 0 ... 99,9 % 0 ... 99,9 % lass 1
Group of interharmonics I ● ● ● ● 0 ... 99,9 % 0 ... 99,9 % lass 1
Group of harmonics I ● ● ● ● 0 ... 99,9 % 0 ... 99,9 % lass 1
Short-term flicker ● ● ● ● ● 0 ... 20,0 Pst 0 ... 20,0 Pst lass A
Long-term flicker ● ● ● ● ● 0 ... 20,0 Plt 0 ... 20,0 Plt lass A
Under-voltage ● ● ● ● ● ● ● ● ● ● ● 0 ... 100 % 0 ... 100 % ±0,2 %
Over-voltage ● ● ● ● ● ● ● ● ● ● ● 0 ... 100 % 0 ... 100 % ±0,2 %
Unbalance U ● ● ● ● 0 ... 100 % 0 ... 100 % ±0,15 %
Neutral point displacement ● ● ● ● 10 ... 600 V 0 ... 1 MV ±0,2 %
K-factor ● ● ● ●
Unbalance I ● ● ● ● ±0,5 %
Transients ● ● ● ● 25 μs
Events ● ● ● ● 10 ms
Ripple control signal ● ● ● ● ● ● ● ● ● ● ●
Active power ● ● ● ● ● ● ● ● ● 0 ... 10,8 kW 0 ... 999 GW ±0,4 %
Reactive power ● ● ● ● ● ● ● ● ● 0 ... 10,8 kvar 0 ... 999 Gvar ±0,4 %
Apparent power ● ● ● ● ● ● ● ● ● 0 ... 10,8 kVA 0 ... 999 GVA ±0,2 %
Distortion power ● ● ● ● ● ● ● ● ● ±0,5 %
Active energy +/- ● ● ● ● 0 ... 999 GWh 0 ... 999 GVh 0,5S
Reactive ind. energy +/- ● ● ● ● 0 ... 999 Gvarh 0 ... 999 Gvarh lass 1
Reactive cap. energy +/- ● ● ● ● 0 ... 999 Gvarh 0 ... 999 Gvarh lass 1
Temperature ● ● ● ● ±1°
* for ideal sinusoidal curve of voltage and current
Table 1: Measured and displayed parameters
3. Installation
PLA44 is prepared for wall mounting in the fixed switch boards. In order to assure well ventilation, the PLA44 has to
be installed vertically. There has to be empty space at least 50 mm at the top and bottom and 20 mm at the sides.
PLA44 is fixed into switchboard wall by two clips that are placed on the device at the bottom and top.
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4. Connection
4.1. Suppl voltage
Supply voltage is required to operate the PLA44. The type and level of the necessary supply voltage is written on the
back label. Before applying the supply voltage, make sure that the voltage level and system frequency match the
details on the label. The connection cables for the supply voltage must be connected using a fuse. Use a fuse (6A
type ).
4.2. Measuring inputs
Voltage measuring inputs have to be connected via circuit breaker or switch and fuse (10 A) which are placed close
to the device. urrent measuring inputs have to be connected via current transformers, either ../5A or ../1A ratio.
Picture 2: Full device connection at TN-C network
N tice
If the voltage measuring inputs are connected over the voltage measuring transformers the power of measuring transformer
power must be at appropriate level. Voltage measuring inputs have 5mW self consumption. Recommendation from measuring
transformer producers is to have loaded voltage measuring transformer on 70% of maximum power for the best accurac .
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4.3. RS485
The PLA44 has built-in one RS485 interface supporting Modbus RTU protocol. onnection of the RS485 bus to the
device is on the separate terminal by two wires A and B. Shielding is not required.
PLA44 does not have built in any terminal resistor.
4.4. Ethernet
The configuration of Ethernet are defined by the network administrator and have to be set on the PLA44
correspondingly. If the network configuration is not known, the Ethernet cable should not be plugged into the device.
4.5. USB
Device has one USB interface of type B. USB interface is a standard HIT so there is no special driver needed to be
installed at P for activating the communication and data transfer.
4.6. Temperature sensor
Temperature sensor is connected directly to PLA44 inputs 20 and 21 according to the picture 2. The sensor is NT
type with resistance 10kΩ / 25° .
4.7. Digital inputs / outputs
The instrument is equipped with two opto-isolated transistor outputs inputs. The outputs working mode is fully
adjustable as an alarm output, remotely controlled output or pulse output.
Picture : input / output connection
5. Operation
PLA44 allows comfort operation by easy graphic Main menu which is divided to groups of related features and
functions. For the navigation in menu us the cursor buttons ▲ and ▼. To enter the selected menu or parameter press
button SET. Returning back to previous menu or parameter level press button ESC.
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5.1. Numeric
Menu Numeric contains measured parameters in numeric form. Parameters are grouped to separate screens
according logical order.
5.1.1. Flicker
Device calculates flicker according to the norm EN61000-4-15. It provides values for short-term flicker (10 minutes),
long-term flicker (2 hours).
5.2. Harmonics
5.3. Vectors
5.4. Bar-graphs
Voltage, current and power values can be shown in bar-graph form as well. Bar graphs have synchronized automatic
scale which is adjusted according to min and max displayed values to provide fast and clear comparison of measured
values in all phases.
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5.5. Scope
PLA44 shows scope of measured signal for voltage and current in all four phases. It is possible to select displayed
phase or phases by pressing the button SET and selecting the appropriate phase or phases. Escaping back from the
phase selection is by pressing the button ESC.
In order to show or hide curve of the phase or phases on graph press button SET and select the phase or phases.
5.6. Events
PLA44 captures and records voltage and current events as well as voltage transients. Detail information and signal
waveform are displayed on the device screen and also web-server (if enabled).
5.6.1. List of events
Last 50 events of each type are captured in the nonvolatile memory with information about the start and end of the
event and graph of the event. On the device screen the event graph can be displayed with all detail information.
There are following type of events recorded in the PLA44 memory.
Type f event Descripti n
Interruption Voltage interruption
DIP Under voltage
SWELL Over voltage
RV Rapid voltage changes
IMAX Over current
On the screen of Events list it is possible filter events according to their type. Press button Fn (Zoom) to apply
appropriate filter on list of events.
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By cursor buttons ▲ and ▼ move to event of your interest and pressing the button SET will display the event details.
Mowing the graph left or right use the buttons ▲ and ▼. In order to select the phase or phases to be shown on graph
press button SET and select the phase.
5.6.2. Rapid Voltage Change (RVC)
A Rapid Voltage hange (RV ) is an event characterized by a quick transition from one steady-state voltage to
another. Typically, RV events are counted for a period of one hour, or for each day.
If the change in voltage is sufficient to cross the dip threshold or the swell threshold, then the event shall not be
recorded as an RV event. It is a dip or a swell.
5.6.3. List of transients
PLA44 captures transients of voltage as short as 25 μs and keeps last 50 transients of each type in the nonvolatile
memory.
Type f event Descripti n
Different Transients started by differential threshold defined by zone
Absolute Transients started by threshold absolute value defined by set value of voltage
Waveform of transient event is possible be zoomed to the detail view by pressing the button Fn (Zoom). The detailed
zoom view can be moved forward and back by cursor buttons ▲ and ▼.
5.6.4. Power cuts
Power cuts of device supply voltage are recorded into the memory. Each recording is stored with date and time of
power cut start and end.
Last 15 supply voltage power cuts are captured in the nonvolatile memory.
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6. Device settings
PLA44 device can be configured from panel screen for most of the essential parameters. At main screen move to
parameter Setting to open device various configuration sub-menu. Some of the device parameter and functions can
be enabled and configured only by P and software PMS.
6.1. Language
Menu of PLA44 is localized to several languages. Default device language is English. Select the appropriate
language from the list and confirm it. Device menu will turn immediately to the selected language.
6.2. Measurement
Settings measurement gather all settings related to measuring circuits connection type, measuring transformers and
type of parameters calculation.
Parameter Descripti n Fact ry setting Setting range
Network type Defines the type of network and measuring circuit connection 4UN_4I chapter 6.2.1
Frequency Defines the nominal system frequency 50 Hz 45 ... 75 Hz
Udin Network nominal phase voltage 230 V 1V ... 750 kV
Idin Network nominal phase current 5 A 1A ... 750 kA
Voltage Tr Enable the usage of measuring voltage transformer No No / Yes
urrent Tr Enable the usage of measuring current transformer No No / Yes
Utr Primary and secondary voltage of measuring voltage transformer 230V / 230V 1 ... 750 kV
Itr Primary and secondary current of measuring current transformer 5A / 5A 1 ... 750 kA
Flicker Parameter of the nominal voltage and frequency for flicker calculation 230V - 50Hz 120/230V, 50/60Hz
Erase Max/Min Deletes all saved maximums and minimums of measured parameters No Yes / No
Averaging Type of averaging method Static Static / Sliding
Averaging period Time for averaging period setting 5s 1 ... 3600s
6.2.1. Network t pe
Defines the types network system in which the PLA44 is connected. The main connection diagram of PLA44 is
shown in chapter 4.2. In the following table are shown all possible connection variants that can be defined in the
device menu.
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6.3. Anal ser
Settings related to the device itself such as display parameters, colors, time, password protection and reset of all
settings.
Parameter Descripti n Fact ry settings Settings range
Display refresh Speed of display refreshing. The optimal setting is 5 cycles.
Brightness Brightness of display for operation while buttons are touched
Standby brightness Defines level of brightness when device is not pressed at any button
Standby time Time delay after that device turns to standby level of display brightness.
Password Four digit password for access to device settings menu
Date and time Device internal clock configuration sub-menu ►
olors olors template of particular voltages and currents of phases for graphs
Reset Reset device to the factory settings
6.3.1. Date and time
PLA44 corrects internal clock according to NTP servers while it is connected to Internet. NTP time synchronization
has always priority above the manual clock settings. lock synchronization by NTP is fully automatic and there is no
need to set anything.
The selection of closest NTP server is adjustable in software PMS. For the finding the closest NTP server refer to the
following link http://support.ntp.org/bin/view/Servers/StratumOneTimeServers.
Parameter Descripti n Fact ry settings Settings range
Device time Date and UT time in format for date YYYY.MM.DD and HH:MM for time.
UT time offset Time offset of the local time against to UT . Offset is set in seconds.
Daylight start Beginning of the summer time season
Daylight stop End of the summertime season
Daylight offset Time shift for summertime season
6.3.2. Reset
Reset device to the factory settings. All settings including communication interface configuration will be erase and set
to the factory settings.
6.4. Communication
6.4.1. Ethernet
Menu of settings related to Ethernet interface.
Parameter Descripti n Fact ry setting Setting range
Ethernet Enable or disable Ethernet interface Yes Yes / No
IP PLA44 IP address in the local network 192.168.001.201
Mask Mask of the Ethernet network 255.255.255.0
Gateway IP address of P or router used as a gateway to parent network 192.168.001.001
IP - public Public IP address of router 192.168.001.001
Web server Web-server settings advance menu ►
Modbus T P Modbus T P settings advance menu ►
FTP server FTP server settings advance menu ►
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6.4.1.1 Web server
Instrument has internal web-server for remote online monitoring via Internet or local network. Following table
describes settings related to web server configuration of PLA44.
Parameter Descripti n Fact ry setting Setting range
Web server Enable or disable web server Yes Yes/No
Web port Port on which the web-server is accessible 80 0 ... 3850
Web name User name for access to PLA44 device web-server admin
Web password Password for access to PLA44 device web-server 1234
Defines the. For standard access by any browser by setting only IP address without port value, it should be set on 80.
6.4.1.2 Modbus TCP
Parameter Descripti n Fact ry setting Setting range
Modbus T P Enable or disable Modbus T P feature Yes Yes / No
Modbus T P - port Defines the port on which the Modbus T P is accessible 80
6.4.1.3 FTP server
Parameter Descripti n Fact ry setting Setting range
FTP server Reference voltage level type Yes Yes / No
FTP port Port of the FTP service 21
FTP name User name for access to FTP server of PLA44 device admin
FTP password Password for access to FTP server of PLA44 device 1234
6.4.2. RS485
Settings related to RS485 interface with Modbus RTU protocol support.
Parameter Descripti n Fact ry setting Setting range
ID Unique identification number in RS485 network 0 0 ... 255
Transfer rate ommunication speed of RS485 interface is adjustable in speed 9,6 kBd 9,6 kBd ... 115 kBd
Parity RS485 interface parity odd odd / even
Stop bit RS485 interface stop-bit 1 1 / 2
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6.4.3. Connection of PLA44 to LAN with NAT server
If there is request for remote access (from Internet) to PLA44, which is place in the local network behind the router
with active NAT server, the following parameters configuration to be defined on the router.
For access to web server of PLA44 there has to be created port forwarding (virtual server):
•router public IP address:port 80 --> IP address of PLA44:port 80
For access to FTP server of PLA44 (needed for PMS software) there has to be created port forwarding (virtual
server):
•router public IP address:port 21 --> IP of PLA44:port 21
•router public IP address:port 50000...50005 --> IP of PLA44:port 50000...50005
N tice
Number of port of 80, 21 is possible change on router. Range of ports 50000 ... 50005 is fixed and it is not possible to
change it.
On the PLA44 device it is necessary set following parameters in:
•IP - public
•FTP: 21 (factory value)
•user name: admin (factory value)
•password: 1234 (factory value)
N tice
For communication with FTP server of PLA44 within local network is IP-public parameter set on the same as IP of the
device. For communication with FTP server of PLA44 from the internet is the IP-public parameter set on public IP obtained
from Internet provider.
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6.5. Events setting
Events captured by PLA44 are fully adjustable by the parameters described in the list beneath.
Parameter Descripti n Fact ry setting Setting range
Reference Reference voltage level type Udin Udin / Sliding
Pre Samples Number of recorded half periods Urms1/2 (10ms = 1) before event 10 0 ... 4000
Post Samples Number of recorded half periods Urms1/2 (10ms = 1) after event 150 0 ... 4000
Over-voltage ► Threshold 110% 100 ... 500%
Hysteresis 5% 1 ... 20%
Under-voltage ► Threshold 90% 1 ... 100%
Hysteresis 5% 1 ... 20%
Interruption ► Threshold 5% 1 ... 100%
Hysteresis 2% 1 ... 20%
Over-current ► Threshold 110% 100 ... 500%
Hysteresis 5% 1 ... 20%
Memory for capturing the samples of RMS curve is fixed on the maximum of 4000 samples. Definition of number Pre
and Post samples is limited by this maximum samples memory space.
6.6. Transients setting
Transient setting is defined by several parameters listed in table beneath.
Parameter Descripti n Fact ry setting Setting range
Pre Samples Number of recorded samples before the transient start 768 0 ... 8000
Post Samples Number of recorded samples after the transient start 768 0 ... 8000
Delay time Time delay before next transient recording after transient start 5s 1 ... 20 s
Increase value Increment value for transient insensitivity after recording start 10V 1 ... 750000 V
Difference ► Difference activation No YES / NO
Threshold difference setting 20% 1 ... 100%
Absolute ► Absolute activation NO YES / NO
Threshold absolute setting 110% 100 ... 500%
Memory for capturing the transients amplitude is fixed on the maximum of 8000 samples. Definition of number Pre
and Post samples is limited by this maximum samples memory space.
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6.7. RVC and Ripple control
The RV threshold (or thresholds) and the RV hysteresis are both set by the user according to the use.
Mains signaling voltage, called “ripple control signal” in certain applications, is a burst of signals, often applied at a
non-harmonic frequency, that remotely control industrial equipment, revenue meters, and other devices.
Parameter Descripti n Fact ry setting Setting range
RV threshold The RV threshold is a percentage of Udin 3,3% 1 ... 100%
RV hysteresis The RV hysteresis is a smaller percentage of Udin 1% 1 ... 20%
Ripple -control Adjustable by PMS 50 Hz 50 Hz ... 3 kHz
According to the norm the ideal settings is RV threshold on 3,5% of Udin and hysteresis on 1% of Udin.
6.8. Information
Information about the vendor and device firmware version.
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7. Firmware update
Device firmware can be updated when the new firmware is released. Visit the www.bmr-trading.co m for to verify
availability of new firmware. Firmware file is prepared as an exe file that is directly run on Windows P .
For the successful firmware update connect the PLA44 via Ethernet to P where the Update software will run. Enter
the IP address of the PLA44 and user name and password. Pressing button onnect will verify accessibility of PLA44
and prepare connection for firmware update start.
Imp rtant
While firmware is update device should be on the stable power suppl and Ethernet connection should not be removed.
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8. Technical features
Parameter Value
Supply voltage
230 VA , 50/60 Hz (+10%,-15%)
100 ... 230 V A / 100 ... 265 V D
24 V A /D
Power consumption <8 VA
Voltage measuring range L - N 10 ... 600 VA
Voltage measuring range L - L 18 ... 1000 VA
urrent measuring range 0,001 ... 6 A
Frequency measuring range 40 ... 70 Hz
lock accuracy < 1 s per day
Number of output / input 2
Output type NPN transistor free potential optical insulated
Maximum voltage for output usage 24 VD
Maximum output load capability 100 mA
Pulse length of pulse output 70 ms (10 ms minimum pause)
Input type optical insulated free potential
Maximum input voltage 24 VD
Maximum input consumption 10 mA
Voltage transformer ratio 1 ... 750 000
urrent transformer ratio 1 ... 750 000
Supply voltage power cuts memory 15 events
Sampling rate 40 kHz
Events trigger 10 ms
Data memory for measured parameters 1 GB
Display type and size VGA TFT 5,6”
Temperature input NT sensor 10 kΩ / 25°
ommunication port RS485 (optional) / Modbus RTU / 9,6; 19,2; 38,4 ... 115 kBd
Ethernet RJ45 / 10/100 Mbit
USB Type B
Over-voltage class 600 V ATIII
Pollution degree 2
Working ambient temperature limit -25° ... +60°
Front panel 144 x 144 mm
Panel cutout 136,5 x 136,5 mm
Site depth 75 mm
Weight 1350 g
Protection degree IP20 rear cover / IP54 front panel
Related standards IE 61000-4-30 class A, IE 61000-4-7, IE 61000-4-15, IE 61557-12
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