CONZERV DigitAN EM6400 User manual

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EM 6400 User Manual v03.02. – d12
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CONTENTS
1. GENERAL...........................................................................................................5
1.1. CUSTOMER SERVICE AND SUPPORT................................................................... 5
1.2. PRODUCT WARRANTY...................................................................................... 5
1.3. LIMITATION OF WARRANTY ............................................................................. 5
1.4. STATEMENT OF CALIBRATION .......................................................................... 5
1.5. DISCLAIMER .................................................................................................... 5
2. OVERVIEW ........................................................................................................7
2.1. PHYSICAL DESCRIPTION ................................................................................... 8
2.2. FRONT PANEL .................................................................................................. 8
2.2.1. The Indicators..........................................................................................9
2.2.2. The Keys ..................................................................................................9
2.2.3. Here’s an example to try:.......................................................................11
3. QUICK START GUIDE....................................................................................12
3.1. EM 6400 TECHNICAL SPECS........................................................................... 12
3.1.1. Measurements with EM 6400 DigitAN series..........................................13
3.1.1.1. Accuracy....................................................................................... 14
3.1.2. Auxiliary Power Supply..........................................................................14
3.1.3. Front Panel Display...............................................................................14
3.1.4. Installation & Input Ratings...................................................................14
3.1.5. Environmental Conditions......................................................................15
3.1.6. Safety Construction................................................................................15
3.1.7. Dimensions & Shipping..........................................................................15
3.2. DISPLAY PARAMETERS WITH THE EM 6400 DIGITAN METERS ......................... 16
3.3. KEYPAD OPERATION ...................................................................................... 17
3.3.1. Auto-Scroll.............................................................................................22
3.3.2. Default Display (View) Page – Only in v03.02.11 & v03.02.12 EM6436 &
EM6433...........................................................................................................22
3.3.3. TURBO key ............................................................................................22
3.4. PROG MENU –SETUP .................................................................................... 23
3.4.1. Enter PROG Menu in Edit Mode............................................................23
3.4.2. Enter PROG Menu in View (read – only) mode ......................................24
3.4.3. Enter PROG Menu on Power ON...........................................................24
4. ENTIRE LIST OF PROG MENU – SETUP PARAMETERS ........................25
4.1. EDIT SET PARAMETERS IN PROG MENU......................................................... 26
4.1.1. Edit and accept setup .............................................................................26
4.1.2. To save the new value to setup................................................................26
4.1.3. Clear INTG and MD...............................................................................27
4.1.4. Energy Integrator...................................................................................28
4.1.4.1. Integrator Overflow...................................................................... 28
4.2. SUMMARY ..................................................................................................... 28
5. AC POWER MEASUREMENT .......................................................................29
5.1. THREE-PHASE SYSTEMS ................................................................................. 29

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5.2. CONSUMPTION &POOR PF............................................................................. 30
5.3. “3D” KVA MEASUREMENT ............................................................................ 30
6. MECHANICAL INSTALLATION...................................................................31
6.1. INSTALLATION PROCEDURE ............................................................................ 33
6.1.1. Panel Mounting for New Installations ....................................................33
6.1.1.1. Location and Mounting considerations...................................... 33
6.1.1.2. Usage ........................................................................................... 33
6.1.1.3. Panel Considerations and Environment.................................... 33
6.1.1.4. Viewing......................................................................................... 34
6.1.1.5. Mounting....................................................................................... 34
7. ELECTRICAL INSTALLATION....................................................................35
7.1. AUXILIARY (CONTROL)POWER SUPPLY ......................................................... 36
7.2. PTS AND CTS................................................................................................. 36
7.2.1. PT, CT Wiring........................................................................................36
7.3. VOLTAGE SIGNAL CONNECTIONS ................................................................... 37
7.3.1. PT Connections...................................................................................... 37
7.3.2. Selecting the Voltage Fuses....................................................................37
7.4. CURRENT SIGNAL CONNECTIONS.................................................................... 37
7.4.1. CT Connections......................................................................................38
7.4.2. CT Polarity ............................................................................................38
7.4.3. CT Connection Reversal.........................................................................39
7.5. SETUP –SYSTEM TYPE ................................................................................... 39
7.6. PHASE LABELS ............................................................................................... 39
7.7. CONNECTION DIAGRAMS................................................................................ 39
7.7.1. EM 6400 Rear Panel..............................................................................39
7.7.2. Three Phase 3 Wire Delta ......................................................................40
7.7.3. Three Phase 4 Wire Star (Wye) ..............................................................41
7.7.4. Single phase connection ......................................................................... 42
8. COMMUNICATION INSTALLATION..........................................................43
8.1. RS-485.......................................................................................................... 43
8.2. REPEATERS .................................................................................................... 44
8.3. FACTORY SETTINGS ....................................................................................... 45
8.4. MODBUS REGISTERS ...................................................................................... 45
8.4.1. Parameters not available on Display......................................................46
9. APPENDIX........................................................................................................46
10. KEY FACTOR FOR SUCCESS .....................................................................48
11. FAQ’S...............................................................................................................55
11.1. NOMENCLATURE.................................................................................... 55
11.2. INSTALLATION........................................................................................ 56
11.3. DISPLAY INDICATIONS.......................................................................... 57
11.4. SETUP........................................................................................................ 59
11.5. SIM (SIMULATION)MODE........................................................................... 61
11.6. AUTO SCROLL ......................................................................................... 61
11.7. TURBO PARAMETERS (FAVOURITE PAGES) ...................................... 62
11.8. DEFAULT DISPLAY PAGE .............................................................................. 62

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11.9. INTEGRATORS......................................................................................... 63
11.10. FEATURES .............................................................................................. 64
11.11. COMMUNICATION ................................................................................ 66
11.12. GENERAL................................................................................................ 67

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1.GENERAL
1.1.Customer Service and Support
Questions? Difficulties? We’re here to help. Customer service and support is available via
email at [email protected]. Please include the model, serial number and a description
with which we can re-create the problem at our Support Centre. You can shorten this time by
also including necessary settings, the wiring diagram and the particular readings, which
uniquely identify the problem.
Toll free phone support is available in some countries. For the latest phone number list please
visit www.conzerv.com
1.2.Product Warranty
CONZERV warrants all products to be free from defects in material, workmanship and title and will be
of the kind and quality specified in CONZERV’s written description in the manual. The foregoing shall
apply only to failures to meet said warranties, which appear within one year from the date of shipping.
During the warranty period, CONZERV will, at its option, either repair or replace any product that
proves to be defective. Please see the LIMITED WARRANTY CERTIFICATE provided with the
product for further details.
1.3.Limitation of Warranty
This warranty does not apply to defects resulting from unauthorized modification, misuse or
use for any reason other than electrical power monitoring.
OUR PRODUCTS ARE NOT TO BE USED FOR PRIMARY OVER-CURRENT
PROTECTION. ANY PROTECTION FEATURE IN OUR PRODUCTS IS TO BE
USED FOR ALARM OR SECONDARY PROTECTION ONLY.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR
IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF MERCHANABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. CONZERV SHALL NOT BE LIABLE
FOR ANY PENAL, INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES
ARISING FROM ANY AUTHORIZED OR UNAUTHORIZED USE OF ANY
CONZERV PRODUCT. LIABILITY SHALL BE LIMITED TO THE ORIGINAL
COST OF THE PRODUCT SOLD.
1.4.Statement of Calibration
Our instruments are inspected and tested in accordance with specifications published by an independent
testing facility. The accuracy and calibration of our instruments are traceable to the National Institute
of Standards and Technology through equipment that is calibrated at planned intervals by comparison
to certified standards.
1.5.Disclaimer
The information presented in this publication has been carefully checked for reliability; however, no
responsibility is assumed for inaccuracies. The information contained in this document is subject to
change without notice.

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Blank pages for notes

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2.OVERVIEW
The EM 6400 DigitAN are digital power meters that offer comprehensive three-phase
electrical instrumentation and load management facilities in a compact and rugged package.
To get the best out of your investment, we suggest that you take a few moments to review this
manual. This chapter contains the main operating instructions. The remaining chapters
explain the installation and setup steps before the meter is ready for use.
The EM 6400 DigitAN is a universal meter. Before use, please program the SYS
(measurement system configuration), PT and CT ratios through the front panel keys.
Otherwise, it will read your system incorrectly. Other settings such as communication
parameters must also be programmed as needed.
CONZERV stands behind your EM 6400 DigitAN meter with complete User Support and
Service. If the need arises, please do not hesitate to contact us at [e-mail].
Figure 2.1: The EM6400 DigitAN - multi-function load manager

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2.1.Physical Description
FRONT: The front panel has 3 rows of 4 digits / characters each, with auto scaling “K” kilo,
“M” Mega and “--” minus indications. The “kilo” and “Mega” indications lit together show
Giga readings. The Load bar graph to the right of the display gives the indication of
consumption in terms of the % A Load with respect to the FS selected. Five smart-keys make
navigating the parameters very quick and intuitive for viewing data and configuring (Setup)
the EM 6400.
REAR: The voltage and current terminals and the communication port are located on the
back of the meter. CAUTION: These contain hazardous voltages during operation and
must be operated only by qualified and authorized technicians.
2.2.Front Panel
The front panel contains the following indicators and controls:
•Three rows of alphanumeric displays, 4 digits each that display three RMS parameters
simultaneously, or one energy parameter. The displayed readings update every second.
•For each row: Kilo, Mega (Kilo + Mega = Giga) indicator and a Negative (-) indicator.
•Load bar, which gives a unique analog indication of % loading (% FS CT Pri).
•Five keys to scroll through the display page.
The EM 6400 solves the problem of tiny cluttered indicators by prominently displaying the
parameter name right on the large, alphanumeric readouts. For the first time in a panel meter,
the parameter name is as clearly readable as the value. The name will be displayed for 2
seconds as well as each time you press a key and then the Value for 8 seconds. This method
also allows programmable phase soft-Labels in the EM 6400 DigitAN meters. You can
choose from 123 (Factory setting), ABC, RYB, PQR or RST.
Figure 2.2: The EM 6400 front panel with display and keypad

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2.2.1.The Indicators
Table 2.1: Kilo, Mega and Negative Indicators
M
Mega: When lit, indicates that the reading is in Mega, (10^6). 10,000 K is shown
as 10.00 M. 1.0 M is displayed as 1000 K.
When Kilo and Mega are both glowing, the reading is in Giga (10^9). 10,000 M is
shown as 10.00 G. 1.0 G is shown as 1000 M.
-
Neg: -When lit, indicates that the reading is negative Per IEEE 100 and industry
standard practice by meter-men, the following are Negative:
•When the flow of watts is forward: Capacitive (Leading) VARs & PF are
negative.
•When the flow of watts is reverse: Inductive (Lagging) VARs & PF and Watts
are negative.
KKilo: When lit, indicates that the reading is in Kilo (10^3). 10,000 is displayed as
10.00 K. 1.0 K is shown as 1000.
Table 2.2: Giga, Mega (M), Kilo (K) & Decimal Point Scaling
RMS Reading Indicator
Less than 0.001 K, M OFF, displays “0.000”
Less then 9999 K, M OFF
Above 9999 K ON, M OFF
Above 9999 k M ON, K OFF
Above 9999 M Giga (K + M indicators ON)
Upto 9999G Giga
Above 9999G Display shows “Hi” for positive numbers, “Lo” for negative numbers
RMS readings are four digits. Energy readings have eight digits, including four additional
fractional digits. The maximum number the meter handles is 9,999 G for RMS and energy
values.
This means that the energy readings of the meter will overflow at 3 values of kWh or kVAh
(selectable through PROG menu - Setup) depending upon the PT and CT ratios programmed.
See Table 3.4 “Integrator Overflow Value”.
2.2.2.The Keys
Operating the meter is easy using the five smart keys to navigate through the Keypad
Operations Table. The display pages “expand” as you go right, much like the directory or
explorer “tree” displayed on any computer. The display shows where you’re headed.
Table 2.3: The Key pad operation table
Right Key:
•Go forward into sub-parameter pages.
•During Edit Setup values, select next (right side) digit.
Left Key:
•The Opposite of the right key.
•Go back towards to the main parameter pages. Going left past “PROG”
requires code entry to enter PROG menu (Setup and Clear)
•During Edit Setup, selects previous (left side) digit
•Exits from Edit mode, back to the PROG menu - Setup.

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Up Key:
•Scroll up through display pages at the same level, within the same
function.
•Continuous pressing for 3 seconds initiates limited auto-scroll (within the
same function). Press any key to return to manual scrolling.
•While editing, increases the value of the blinking digit during edit.
Typically while changing the meter setup settings.
Down Key:
•The opposite of the up key.
Scroll down through other display pages at the same level, through all
functions.
•Continuous pressing for 3 seconds initiates the full auto-scroll mode,
through all functions. Press any key to return to manual scrolling.
•While editing, decreases the value of the blinking digit during edit.
TURBO Key:
•The TURBO key scrolls through the following pages: RMS (home page),
VLL, A, PF VLN, A, F VA, W, VAR W, VAR, PF PF1, PF2, PF3,
V1,'2,'3 A1, A2, A3 VA.d, R.d, T.R, MD, HR VAh
Wh R.VAh R.Wh t.VAh t.Wh. . This gives simple one-touch access
to the most commonly used parameters, even for unskilled operators. “One
Touch” does not operate in the PROG menu – Setup.
Note EM6436, TURBO key scrolls through the following pages:
RMS (home page), VLL, A, PF VLN, A, F A, W, PF PF1, PF2, PF3
Wh and Run hours
EM 6433, TURBO key scrolls through the following pages:
RMS (home page), A, W Wh and Run hours
•If you’re lost, the TURBO key is a quick way to get back to the RMS
home page.
•Continuous pressing for 3 seconds initiates auto-scrolling through the above
TURBO pages.
•During the power up, if the TURBO key is pressed, meter will go in to
PROG menu - Setup. This is the simplest way to enter in to the setup.
The parameter name is displayed every 8th second for 2 seconds, as well as the first time you
press a key. At this point press the next key immediately to scroll to the next page you
want to see. If you are not sure which page you’re watching, one press of any key will
immediately identify the name. Pressing the key again immediately takes you to the next
page.
The meter menus and displays are organized as below. Navigating with the EM 6400 is very
easy and intuitive. For full details, see the Keypad Operations Table and the Meter Function
Map. The left-most column (RUN, CLR, SET) constitutes the “PROG menu”. Press the key
in the direction you want to go. Display shows where you’re headed.
Press the key that takes you in the desired direction.

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2.2.3. Here’s an example to try:
Table 2.4: Menu and Display Map
Take a quick look at what the keys do
PROG
RMS
RUN
SET
Navigation Concept
CODE
y
VLN
A
F
VLL
A
PF
V12
23
31
Let us take an example to understand the actions of the front panel keys in the RUN menu.
This example will explain how you can navigate from the ‘RMS’ page to the ‘VLN A F’
page, back to ‘RMS’ and then to ‘PROG’ in EM 6400
Step1: From the RMS page use the RIGHT key . The display shows ‘VLL A PF’.
The RIGHT key can be used to go forward into sub-parameter pages.
Step2: Now press the DOWN key .
You can scroll down through other pages at the same level using the DOWN key. The
display shows ‘VLN A F’. Congratulations you have successfully navigated from
‘RMS’ to ‘VLN’.
Step3: To return to ‘RMS’ press the LEFT key .The display shows ‘RMS’.
Using the left key you can go back towards to the main parameter pages from the
subparameter pages.
Going Left past ‘PROG’ requires CODE entry to enter PROG menu (Setup and Clear).
Step4: Now press UP key .
The display shows ‘PROG’. Congratulations you have successfully navigated to the
PROG page.
Using the UP key you can scroll up through all the display pages at the same level and
within the same function.

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3. Quick Start Guide
3.1.EM 6400 Technical Specs
The EM 6400 DigitAN series is a high-accuracy, low cost, ultra-compact, power and energy
meter that offers ISO 9001 quality, accuracy and functional flexibility and MODBUS RTU
communications capability. The standard unit flush-mounts in a DIN 96 cutout and conforms
to UL and CE safety requirements.
The EM 6400 DigitAN series is designed for retrofit application such as replacement of
existing analog meters and is also usable as a stand-alone meter in custom panels, PDUs,
switchboards, switchgear, UPS’s, generator sets, MCCs systems etc.
The EM 6400 DigitAN series provides easy communication to PLCs, DCS, BMS and other
systems through the use of Modbus RTU communications on RS 485, with isolation voltage
minimum 2kV for 1 minute, from other circuits.
The EM 6400 DigitAN series of meters are configurable & user programmable through the
front panel.
Measures true RMS electrical parameters. 1 Second update
Wh accuracy: Class 1.0 as per IEC 62052-11 and 62053-21, class 0.5S is optional as per IEC
62052-11 and 62053-22 and ANSI C12.20.
Impulse: 6 kV IEC 60060 1.2 µS/50 µS.
Surge withstand as per IEEE C37.90.1: 2002 (ANSI), Burst as per IEEE 62.41: 1991 (ANSI)
Fast Transient: > 4kV IEC 61000-4-4 Level 4
ESD IEC 61000-4-2
Emission meets CISPR 22
Power 4 Quadrants, Energy 2 Quadrant. Provides 3D power computation for kVA
Color -coded load bar graph for the quick analog estimation of consumption from a
distance without touching any keys.
Patented alphanumeric display for easy readability.

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3.1.1.Measurements with EM 6400 DigitAN series
The EM 6400 DigitAN can measure, locally display and remotely transfer over MODBUS RTU, the
following electrical parameters over the input range with an accuracy of Class 1.0 or better for Volts
and Amps, Power and Energy functions, Class 0.5 is optional:
Table 2.4a: Measurements with EM 6400 DigitAN series meters
Parameters EM
6459 EM 6433 EM 6434 EM 6436 EM 6400
True RMS voltage phase to neutral and
3phase average •••
True RMS voltage phase to phase and
3phase average •••
True RMS current per phase and 3phase
average ••••
Frequency •••
Power Factor ••••
Real Power and Energy ••••
Reactive Power and Energy ••
Apparent Power and Energy ••
OLD Real Power and Energy ••••
OLD Reactive Power and Energy ••
OLD Apparent Power and Energy ••
Import/Export Parameters (Ordering
Option) - VAh, Wh, VARh (Ind and
Cap), Run hours, On hours,
Interruptions
•
Demand Parameters (Ordering
Option)
(W/VA Demand, Rising Demand,
Maximum Demand, Maximum Demand
Time, Time remaining)
•
Total Harmonic Distortion (Ordering
Option)
(V1%, V2%, V3%, A1%, A2%, A3%)
•
Note: This document is applicable for:
All models - v03.02.12.
EM6400, EM6459, EM 6434 – v03.02.02.
EM 6436, EM 6433 – v03.02.11.
The EM 6400 provides all single phase (per-phase) Real, Apparent, Reactive Power and
Power Factor values. Positive (Inductive) and Negative (Capacitive) Reactive Energy is
separately accumulated for Lead / Lag analysis. OLD Energy values for VAh, Wh, VARh, -
VARh is available.

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3.1.1.1.Accuracy Table 2.5: Accuracy Table
Class 1.0 (standard) and Class 0.5 (ordering option)
Accuracy
Measurement Class 1.0 Class 0.5
Voltage LN, per phase 1.0 0.5
Voltage LL, per phase 1.0 0.5
Voltage LN, avg 1.0 0.5
Voltage LL, avg 1.0 0.5
Amp, per phase 1.0 0.5
Amp, avg 1.0 0.5
Amp, phase angle per phase 2º 1º
Frequency 0.1 0.1
Real power, (kW) per phase & total 1.0 0.5
Reactive power, (kVAR) per phase & total 2.0 1.0
Apparent power, (kVA) per phase & total 1.0 0.5
Active energy, (kWh) import/export 1.0 0.5
Reactive energy, (kVARh) (Ind / Cap) 2.0 1.0
Apparent energy, (kVAh) 1.0 0.5
•Note 1: Additional error of 0.05 % of full scale for meter input current below 100 mA.
•Note 2: PF error limit is same as W error limit in %.
3.1.2.Auxiliary Power Supply
The meter needs a single-phase ac or dc control supply to power its internal electronics.
Auxiliary power supply range: 44 to 300V ac dc.
Burden (load) < 3 VA (auxiliary supply)
3.1.3.Front Panel Display
•Brilliant 3 lines 4 digit (digit height 14.2 mm) per line, patented high readability alpha
numeric LED display with auto scaling capability for Kilo, Mega, Giga.
•The display provides the user access to all phase Voltages (phase to neutral and phase to
phase), Currents (per phase and total), Watts, VARs, VA, Power Factor, Frequency and
kWh, kVAh and kVARh.
•The EM 6400 displays total volts, amps and frequency simultaneously.
•Load bar graph for the indication of the consumption in terms of %A avg.
•Easy setup through keys located on the faceplate for common configuration parameters.
•Password protection on setup parameters.
3.1.4.Installation & Input Ratings
•Auto-ranging voltage inputs should allow direct connection up to 347 VLN /600 VLL ac
systems (no PTs required up to 600 VLL phase to phase).
•Supports (field configurable) direct 4-Wire Star (Wye), 3-Wire Star (Wye), 3- Wire Delta
configurations and single phase via Star (Wye) Phase 1.
•3-phase voltage and current inputs
oVolts: 48 to 347 Vac Phase–Neutral, 80 to 600 Vac Phase-Phase,
Overload – Continuous 600 VLL with full accuracy, 750 VLL Max, Hz. 50 / 60
oAmps: 20 mA to 6 A, Overload: 10 A continuous, 50 A for 3 seconds
oField configurable for 5 A or 1 A secondary CTs
oBurden (Load): Less than 0.2 VA per Volt / Ampere input
oFrequency: 50 / 60 Hz 45 to 65 Hz

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3.1.5.Environmental Conditions
•Sealed dust-proof construction. Meets IP51 for the front panel
•Temperature operating: – 10 to 60 °C, (14 to 140 oF)
Storage: – 25 to 70 °C, (-13 to 158 oF)
•Humidity : Below 5% to 95%, non-condensing
3.1.6.Safety Construction
•Self-extinguishable V0 plastic, double insulation at accessible areas.
•Pollution Degree II
•Measurements Category III
3.1.7.Dimensions & Shipping
•Basic unit installed depth 80 mm behind bezel with 92x92 mm panel cutout, flush mount.
The Protection cover affixed over the rear terminal block extends the depth to 82 mm.
•Bezel dimension 96 x 96 mm. Panel Cutout 92 x 92 mm
•Weight 400 gms approx Unpacked, 500 gms approx shipping
See Chapter 5: Mechanical Installation.

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3.2.Display parameters with the EM 6400 DigitAN meters
The EM 6400 can measure, locally display and remotely transfer over MODBUS RTU, the
following parameters
Parameter EM
6459 EM 6433 EM 6434 EM 6436 EM 6400
V LL VLN
V12 V21 V31 V1 V2 V3 •••
A
A1 A2 A3 ••••
F •••
%L - Amps ••
%Unbal - Amps ••
PF
PF1 PF2 PF3 ••••
%A FS
Analog colour coded load bar • • •••
RPM ••
A0 Phase Angle
A01 A02 A03••
W
W1 W2 W3 ••••
VA
VA1 VA2 VA3 ••
RMS
VA
R
VAR1 VAR2 VAR3 ••
V%1 V%2 V%3
THD
A%1 A%2 A%3
Demand W or VA
Rising demand
Time remaining
MD Maximum demand
DM
Hr MD occurred
Wh ••••
VAh ••
VARh ••
-VARh ••
Run hours •••
ON hours •
INTG
Interruptions •
Wh
VAh
VARh
-VARh
INTG WITH I/E
Run hours
Wh ••••
VAh ••
VARh ••
-VARh ••
OLD
Run hours •••
NOTE
•= Standard Features
= Ordering Option
Note: This document is
applicable for:
All models - v03.02.12.
EM6400, EM6459, EM 6434 –
v03.02.02.
EM 6436, EM 6433 –
v03.02.11.

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The EM 6400 displays:
•Voltage:
Three voltage measurements line-to-line: 1-2, 2-3, 3-1 and average,
Three voltage measurements line-to-neutral: 1-4, 2-4,3-4 and average.
•Current: Three current measurements phase-wise: 1, 2, 3, one average current of all three
phases and three current phase angles Ao
1, Ao 2, Ao 3w.r.t. the corresponding voltage line-
neutral vector.
•Phase wise load in %: Three currents in % of the FS (%A FS).
•Unbalanced load in %
•Frequency: Measured from whichever phase is active.
•RPM: Measures the speed of the generator.
•Power: VA, W, VAR. per phase and total. PF per phase and 3phase. Per-Phase W
readings provide a quick CT Polarity Check. A negated W phase reading indicates CT
reversal.
•Energy: VAh, Wh, +VARh (Ind), -VARh (Cap), Run Hrs, On Hrs, Supply Interruptions
(outage)
•Energy (OLD): VAh, Wh, +VARh (Ind), -VARh (Cap)
•% Average Load Bar graph: Load bar graph indicates consumption in terms of %Aavg.
Now you can quickly estimate the load by viewing the display without operating any
keys. The bar graph consists of 12 segments. Each segment indicates a load of 10% of CT
primary.
•Kilo, Mega, Giga indication for the above parameters.
3.3.Keypad Operation
Figure 3.1 shows a flowchart of Key Operations
Then, follow these simple steps:
•First take a quick look at what the Keys do. Try the simple example (table 2.4)
•Now, try getting around to other parameters, by moving up, down, right and left. The
readings are organized as display pages to the right of “RMS” and “INTG”.
oThe “Kilo”, “Mega” and “Negative” Indicators are automatic. “Kilo” and “Mega”
light up together to show “Giga”.
•You cannot go left into the PROG menu (“RUN”) unless you enter a enter code
•Once in the PROG menu (“RUN”), you can go down to “CLR” or “SET”. Going right
though the “CLR” page allows you to clear the integrator. Similarly, keep going right
through “SET” to program the meter settings. When done:
oGo Left all the way back to the PROG menu
oGo Up to “RUN”
oGo Right into RMS to view the display pages again.

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Figure 3.1: The Display Flow Chart EM 6400, EM 6434 and EM 6459 v03.02
INTG
Wh
PROG
V 12
23
31
RUN
V LN
A
F
SET
RMS V LL
A
PF
PF1
2
3
V 1
2
3
A 1
2
3
L% 1
2
3
A
0
1
2
3
UNB
RPM
F
VA1
2
3
W 1
2
3
VAR1
2
3
PF1
2
3
V12
23
31
PF1
2
3
VA
W
VAR
W
VAR
PF
THD
V
00
1
2
3
A
00
1
2
3
DM VAd
Rd
TR
MD
HR
VAh
VARh
-VARh
Run.h
R.Wh
REV
R.VAh
R.VAR
-R.VAR
R.run
DIAG
W
VAR
PF
CLR
V12 = RMS voltage phase1-2
V23 = RMS voltage phase 2-3
V31 = RMS voltage phase 3-1
RUN = This menu has all the display pages. You can scroll
through the display pages using the front panel keys
A
0
1 = Current phase angle of phase 1 in degrees
A
0
2 = Current phase angle of phase 2 in degrees
A
0
3 = Current phase angle of phase 3 in degrees
SET= This menu has the entire PROG menu. The user
programmable parameters are listed here
RMS = RMS value display pages are in sub level
VLL = Phase – Phase voltage average
A = Current average
PF = Power Factor average
VLN = Phase – Neutral voltage average
A = Current average
F = Frequency in Hz
V1 = RMS voltage phase1-neutral
V2 = RMS voltage phase2-neutral
V3 = RMS voltage phase3-neutral
A1 = RMS current phase1
A2 = RMS current phase 2
A3 = RMS current phase 3
L1% = % of load phase 1
L2% = % of load phase 2
L3% = % of load phase 3
UNB = % of unbalanced load
RPM = Source RPM . Poles programmed in PROG
Menu
F = Frequency in Hertz
VA = Volt – amperes total
W = Watts total
VAR = VAR total
VA1 = Volt – amperes, phase 1
VA2 = Volt – amperes, phase 2
VA3 = Volt – amperes, phase 3
W1 = Watts, phase 1
W2 = Watts, phase 2
W3 = Watts, phase 3
VAR1 = VAR, phase 1
VAR2 = VAR, phase 2
VAR3 = VAR, phase 3
W = Watts total
VAR = VAR total
PF = PF total
PF1 = Power factor, phase 1
PF2 = Power factor, phase 2
PF3 = Power factor, phase 3
THD = Total Harmonic Distortion
V
00
1 = Voltage THD, phase 1
V
00
2 = Voltage THD, phase 2
V
00
3 = Voltage THD, phase 3
A
00
1 = Current THD, phase 1
A
00
2 = Current THD, phase 2
A
00
3 = Current THD, phase 3
DM = Demand
VAd = VA demand (Wd = W demand selectable
through PROG Menu)
Rd = Rising demand
TR = Time remaining
MD = Maximum demand
INTG = Integrator, accumulated readings are displayed
in sub level
VAh = Volt-ampere hours
Wh = Watt hours. If watts is -ve, Vah, VARh, Wh,
-VARh do not integrate
VARh = VAR hours, inductive
-VARh = -ve VAR hours, capacitive
1

EM 6400 User Manual v03.02. – d12
19
DIAG D1
D7
PROG
SET
R.Wh
REV
R.VAh
R.VAR
-R.VAR
R.run
t.Wh
TOT
t.VAh
t.VAR
-t.VAR
t.run
ON.h
INTR
Wh
OLD VAh
VARh
-VARh
R.Wh
O.REV
R.VAh
R.VAR
-R.VAR
t.Wh
O.TOT
t.VAh
t.VAR
-t.VAR
VLL
A
PF
CLR
-VARh = -ve VAR hours, capacitive
Run.h = Run hours, Total hours the load was
ON, accumulates when the load current is
REV = Reverse energy (energy export)
R.VAh = Volt-ampere hours (export)
R.Wh = Watt hours (export)
R.VAR = VAR hours, inductive (export)
-R.VAR = -ve VAR hours, capacitive (export)
R.Run = Run hours, Total hours the meter was
running with reverse enrgy flow (export)
TOT = Total (import + export)
t.VAh = Total Volt – ampere hours (Import +
Export)
t.Wh = Total Watt-hours (Import + Export)
t.VAR = Total VAR-hours, Inductive (Import +
Export)
-t.VAR = Total Negative VAR-hours, Capacitive
t.run = Run hours, Total hours the meter was
running with reverse enrgy flow (export)
ON.h = ON hours. Total hours the meter was
ON. Accumulates if auxiliary supply is present
(irrespective of input signals).
INTR = Auxiliary interruption. Accumulates
the auxiliary interrupt
VAh = Old Volt – ampere hours (Import)
Wh = Old Watt-hours (Import)
VARh = Old VAR-hours, Inductive (Import)
-VARh = Old Negative VAR-hours, Capacitive
O.REV = Old reverse energy (Export)
R.VAh = Old Volt – ampere hours (Export)
R.Wh = Old Watt-hours (Export)
R.VAR = Old VAR-hours, Inductive (Export)
-R.VAR = Old Negative VAR-hours, Capacitive
(Export)
O.TOT = Old total energy (Import + Export)
t.VAh = Total Old Volt – ampere hours (Import
+ Export)
t.Wh = Total Old Watt-hours (Import + Export)
t.VAR = Total Old VAR-hours, Inductive
(Import + Export)
-t.VAR = Total Old Negative VAR-hours,
DIAG = Represents diagnostic pages. The values
contained in these pages are for factory testing
OLD = The energy values stored in the integrator
will be transferred to OLD register when the
Integrator is cleared (manually or due to overflow)
CLR = Clears the INTG values
1

EM 6400 User Manual v03.02. – d12
20
Figure 3.1: The Display Flow Chart EM 6433 v03.02.11 & v03.02.12
W1
2
3
A1
2
3
A
W
Wh
Run.h
Wh
Run.h
D1
D7
PROG
RUN = This menu has all the display pages. You can scroll through
the display pages using the front panel keys
RMS = RMS value display pages are in sub level
A = Current average
W = Watt total
A1 = RMS current phase1
A2 = RMS current phase 2
A3 = RMS current phase 3
W1 = Watts, phase 1
W2 = Watts, phase 2
W3 = Watts, phase 3
INTG = Integrator, accumulated readings are displayed in sub
level
Wh = Watt hours. Wh integrates always in the forward
direction irrespective of the direction of flow of current for
Star(Wye) mode
Run.h = Run hours, Total hours the load was ON,
accumulates when the load current is present.
DIAG = represents diagnostic pages. The values
contained in these pages are for factory testing only
A
W
RUN
SET
CLR
SET
CLR
PROG
DIAG
RMS
INTG
OLD
DIAG
CLR = Clears the INTG values
OLD = The energy values stored in the integrator will be
transferred to OLD register when the Integrator is cleared
(manually or due to overflow
Wh = Old Watt hours
Run.h = Old Run hours
Run.h