ETI ENA33LCD Troubleshooting guide

ENA33LCD
Universal multifunction meter
User and service manual
version 0.4

Content
1 Introduction................................................................3
2 Safety instructions......................................................3
3 Front and rear panel..................................................3
4 Measured parameters................................................4
5 Installation..................................................................4
6 Connection.................................................................5
6.1 Supply volta e.............................................................6
6.2 Volta e measurin inputs............................................6
6.3 Current measurin inputs............................................6
6.4 RS485..........................................................................6
6.5 Network type................................................................7
7 Confi uration.............................................................7
7.1 P_1 General menu.......................................................7
7.1.1 Utr – volta e measurin transformer..................8
7.1.2 Itr – current measurin transformer....................8
7.1.3 System frequency...............................................8
7.1.4 Real-time clock...................................................8
7.1.5 PAS – password..................................................8
7.1.6 rES – factory settin ............................................8
7.2 Menu P_2....................................................................8
7.2.1 Communication interface RS485........................9
7.3 P_3 Firmware version and ener y counters reset.....10
8 Normal monitorin mode..........................................10
8.1 Monitorin screens.....................................................11
8.2 Max, Min and AVG values..........................................13
9 Power monitor software...........................................13
9.1 Device confi uration..................................................13
9.2 Date and time............................................................13
9.3 RS485 interface.........................................................13
9.4 Lo in of measured parameters into SQL...............15
9.5 Tariff settin ...............................................................15
9.6 Modbus re isters.......................................................16
9.7 Firmware update........................................................16
10 Technical features..................................................17

1 Introduction
ENA33LCD is an universal measuring instrument with high accuracy class, great sampling rate 25.6 k z (50 z), various
input / output combinations and other features. Instrument is designed for measuring of electrical parameters in low voltage
and high voltage grids for 2, 3, 4 line and TN, TT grids. RS485 interface communication interface uses Modbus RTU
protocol.
2 Safety instructions
Instrument comply the standard EN 61010-1: Safety requirements for electrical equipment for measurement, control, and
laboratory use.
• Installation of the instrument can be done by qualified and authorised person only.
• Instrument should not be installed in the environment with increased humidity and close to explosive gases.
• Use the instrument in accordance instructions written in the user manual.
•Before the disconnection of CT measuring circuits assure that terminals of CT are short circuited.
•Installation and connection changes can be done without supply voltage only.
• Do not apply supply voltage, measuring voltage and current higher that allowed.
3 Front and rear panel
Picture 1: Front panel
key for enterin menu, parameters, av , max / min
values ESC key for cancellin or return
cursor key for movin up in menu and value
increase cursor key for movin down in menu and value decrease
active recordin into on board Flash memory active relay outputs
active di ital outputs ▲symbolize maximum values
▼symbolize minimum values AVG symbolize avera e values

4 Measured parameters
Universal multifunction meter ENA33LCD is designed for measurement and monitoring of electrical parameters in 1 and 3
phase of LV and V networks. Instrument architecture is based on fast 32 bits microprocessor which provides high
computing power to assure the device being according the norm IEC 61000-4-30.
arameter L1 L2 L3 L1-L2 L2-L3 L3-L1 ΣL1-L3 Max Min AVG Measuring range Displayed range Accuracy
Phase volta e ● ● ● ● ● ● 10 ... 600 V 0 ... 1 MV ±0.2 %
Line volta e ● ● ● ● ● ● 18 ... 1000 V 0 ... 1 MV ±0.2 %
Frequency ● ● ● ● 40 ... 70 Hz 40 ... 70 Hz 10 mHz
Current ● ● ● ● ● ● ● 0.01 ... 6 A 0 ... 1 MA ±0.2 %
cosφ ● ● ● ● ● ● 0.01 L ... 0.01 C 0.01L ... 0.01C ±1 %
Power factor ● ● ● ● ● ● 0.01 L ... 0.01 C 0.01L ... 0.01C ±1 %
THDU L-N ● ● ● ● ● ● 0 ... 999 % 0 ... 999 % ±5 %
THDU L-L ● ● ● ● ● ● 0 ... 999 % 0 ... 999 % ±5 %
Under and over deviation L ● ● ● ● ● ●
Under and over deviation L-L ● ● ● ● ● ●
Volta e unbalance u2, u0 ● ● ●
THDI ● ● ● ● ● ● 0 ... 999 % 0 ... 999 % ±5 %
TDD ● ● ● ● ● ● 0 ... 999 % 0 ... 999 % ±5 %
Volta e harm. (up to 40th) ● ● ● 0 ... 999 % 0 ... 999 % cl. 1
Current harm. (up to 40th) ● ● ● 0 ... 999 % 0 ... 999 % cl. 1
Volta e, current asymmetry ● ● ● 0 ... 100 % 0 ... 100 % 0.3 %
K-factor ● ● ●
Current unbalance i2, i0 ● ● ● 0 ... 99.9 % 0 ... 99.9 % cl. 1
Active power ● ● ● ● ● ● ● 0 ... 15.3 kW 0 ... 999 MW ±0.4 %
Reactive power ● ● ● ● ● ● ● 0 ... 15.3 kvar 0 ... 999 Mvar ±0.4 %
Apparent power ● ● ● ● ● ● ● 0 ... 15.3 kVA 0 ... 999 MVA ±0.4 %
Distortion power ● ● ● ● ● ● ● ±0.5 %
Active ener y +/- ● ● ● ● 0 ... 999 GWh 0 ... 999 GVh cl. 0.5
Reactive ind. ener y +/- ● ● ● ● 0 ... 999 Gvarh 0 ... 999 Gvarh cl. 2
Reactive cap. ener y +/- ● ● ● ● 0 ... 999 Gvarh 0 ... 999 Gvarh cl. 2
Temperature -40 … +125°C 1°C
5 Installation
ENA33LCD is prepared for wall mounting in the fixed switch boards. In order to assure well ventilation, instrument has to be
installed vertically. Instrument is fixed into switchboard wall by two clips that are placed on the device at the bottom and top.

Picture 2: Dimensions
In order to assure well ventilation, instrument 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.
6 Connection
Value and type of auxiliary supply voltage has to be in accordance with rear device label. Standard auxiliary supply voltage is
85 .. 265 VAC. Supply units are designed for system frequency 50 z or 60 z. Measuring inputs should be connected via
sufficient protection like for example fuses or CB (2 – 10 A) place close to the instrument for easy maintenance. Measuring
inputs of current has to be connected indirectly via measuring transformers with ration xx/5A or xx/1A.
Picture 3: Device connection at TN-C network
ENA33LCD
Not available with ENA 33LCD

6.1 Supply voltage
Supply voltage is required to operate the ENA33LCD. 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 has to be connected using a fuse. Use a fuse (6 A type gG or MCB 6A
C).
6.2 Voltage measuring inputs
Instrument has four voltage measuring inputs with input impedance 4 MΩ suitable for measurement according the category
CATIII 600 V.
Each voltage measuring input have to be connected via circuit breaker or switch and fuse (10 A characteristic C) which are
placed close to the device.
Notice
ENA33LCD is not designed for measuring of DC voltage!
ENA33LCD is not designed for usage in SELV grids!
Notice
If the voltage measuring inputs are connected over the voltage measuring transformers the power of measuring transformer
power must e at appropriate level. Voltage measuring inputs have 5 mW self consumption. Recommendation from
measuring transformer producers is to have loaded voltage measuring transformer on 70% of maximum power for the est
accuracy.
6.3 Current measuring inputs
Instrument has three current measuring inputs for indirect measurement via current measuring transformers, either ../5A
or ../1A ratio. CT ratio is freely adjustable from an instrument or via PC software.
Warning
Current inputs maximum permanent capa ility is 10 A.
Important
Before opening the current circuit e sure that measuring terminals of current transformer are connected together.
6.4 RS485
The ENA33LCD has built-in one RS485 interface supporting Modbus RTU protocol. Connection of the RS485 bus to the
device is on the separate terminal by two wires A and B. Shielding is not required.
Note
ENA33LCD does not have uilt-in termination resistor. If the instrument is at the end of the RS485 us it should e
terminated y 120 Ω resistor.
RS485 interface is fully galvanic insulated from the supply circuits and measuring circuits.

6.5 Network type
ENA33LCD is designed for various connections according to the grid type or measurement needs. Network settings defines
the types network system in which the instrument is connected. In the following table are shown all possible connection
variants that can be defined in the device menu.
3-ph connection in gri TN-C-S (TN-C) 3-ph connection in gri TN-C-S without N
1-ph connection
7 Configuration
Before usage of the ENA33LCD instrument it is necessary set several parameters essential for correct operation of the
instrument in the different type of installations.
ENA33LCD device can be configured from panel screen for most of the essential parameters. Configuration menu is divided
to the two sub-menus for device fundamental settings and menu for communication interfaces settings. Enter the
configuration menu by pressing the button SET for at least 5 seconds.
For moving in the menu use cursor keys ▲ and ▼. Key ▲ is normally used for circle moving in the menu. Parameters
setting is activated by pressing the key SET. Changing the parameter setting is done by cursor keys ▲ and ▼, confirmation
of newly set parameter value by key SET. Key ESC cancels setting or move back to higher menu or back to normal
operation.
Most of the device parameter and functions can be enabled and configured only by PC and software PMS.
arameter Description
P_1 Main confi uration menu
P_2 Communication interface confi uration
P_3 Information about firmware version, ener y counter reset
7.1 _1 General menu
In the general menu P_1 gather fundamental settings of an instrument. Table beneath shows all available parameters with
factory setting and possible setting range. In order to move in between particular parameters the cursor button ▲ is used.
ENA33LCD ENA33LCD
ENA33LCD

Editing and storing the parameter is activated by button SET. Modification of parameter is done by buttons ▲▼. Pressing
button ESC returns to level back or cancel setting in case it was not saved by button SET.
arameter Description Factory setting Setting range
bcl Display back-li ht bri htness ON ON, OFF, 20 - 100%
Utr primary / secondary volta e (transformer ratio of U) 230 / 230 1...750000
Itr primary / secondary current (transformer ratio of I) 5 / 5 1...750000
Fr Grid nominal frequency 50 Hz 50 or 60 Hz
Y-- Year settin 09 09 ... 99
M-- Month settin 01 01 ... 12
D-- Date settin 01 01 ... 31
h-- Hour settin 00 00 ... 23
M-- Minute settin 00 00 ... 59
PAS Password OFF 3 di its
rES Reset to factory settin
7.1.1 Utr – voltage measuring transformer
If voltage measuring transformers are used then it is important set primary voltage and secondary voltage of used transformer.
If there is no voltage transformer used then factory setting can remain.
7.1.2 Itr – current measuring transformer
Instrument is designed for indirect current measurement. For correct function it is important set primary and secondary
current of used CT.
Notice
Measuring input for current is sensing current in range 10 mA till 6 A. Maximum current transformer ratio is 7500 / 5 A.
7.1.3 System frequency
ENA33LCD is designed for measurement in grids with 50 z or 60 z system frequency. If the system is 60 z frequency it
is important to set for correct measurement.
7.1.4 Real-time clock
Versions of ENA33LCD with communication interface are equipped by
internal real time clock and calendar. Setting of the time and date is
available in configuration menu by editing parameters visible on the two
screens.
Moving cursor on the parameter by key ▼ and pressing SET enters the
setting. First screen in order is date setting (Year / Month / Day) and after
pressing the key ▲ the second screen of time setting ( our / Minute) will
appear.
7.1.5 AS – password
Device is possible to be protected against unauthorized configuration changes by three digit password. Entering the parameter
PAS and activating the password setting by key SET opens definition of the first number of password. By key ▲ number is
defined while key ▼ moves cursor to another digit. Password is confirmed by key SET. Erasing the password is possible by
setting the 000.
7.1.6 rES – factory setting
In case of need it is possible return ENA33LCD back to factory setting. In the second configuration menu P_2 there is a
parameter rES. Activating that parameter by button SET device turns back tot factory setting including the real time clock.
7.2 Menu _2
Second configuration menu related to the communication interface RS485 setting.
arameter Description Factory setting Setting range
Id Unique identification number in RS485 network 0 0 ... 255
bd Communication speed of RS485 interface 9.6 kBd 9.6 / 19.2 / 38.4 / 57.6 / 115 kBd
PAr RS485 interface parity --- --- (none), _o_ (odd), _E_ (even)
St Stop-bit 1 1 / 2

7.2.1 Communication interface RS485
Instrument can have communication interface RS485 for connection into PC or another device.
•Id – unique number that identifies instrument in the RS485 network
•bd – communication speed between ENA33LCD and converter (PC)
•Par – communication control via parity, that is as default inactive
•St – number of stop bit
Notice
Communication configuration of the device and convert, PC or other device has to e the same on oth sides.

7.3 _3 Firmware version and energy counters reset
In the menu P_3 are information about firmware version, parameter FIr and hardware version - parameter VEr.
In this menu it is also possible reset all energy counters. By buttons ▲ and ▼ set particular tariff. Press and hold button SET
which will reset the energy counter.
8 Normal monitoring mode
After supply voltage connection is the instrument in normal monitoring mode when measure and show electrical parameters.
Measured parameters are logically sorted and displayed in the group of particular screens.