Schneider Electric EM6400NG+ User Manual

Conzerv EM6400NG+

User Manual

NHA2768503-05
01/2021

www.se.com

Legal Information

The Schneider Electric brand and any trademarks of Schneider Electric SE and its
subsidiaries referred to in this guide are the property of Schneider Electric SE or its
subsidiaries. All other brands may be trademarks of their respective owners.

This guide and its content are protected under applicable copyright laws and
furnished for informational use only. No part of this guide may be reproduced or
transmitted in any form or by any means (electronic, mechanical, photocopying,
recording, or otherwise), for any purpose, without the prior written permission of
Schneider Electric.

Schneider Electric does not grant any right or license for commercial use of the guide
or its content, except for a non-exclusive and personal license to consult it on an "as
is" basis. Schneider Electric products and equipment should be installed, operated,
serviced, and maintained only by qualified personnel.

As standards, specifications, and designs change from time to time, information
contained in this guide may be subject to change without notice.

To the extent permitted by applicable law, no responsibility or liability is assumed by
Schneider Electric and its subsidiaries for any errors or omissions in the informational
content of this material or consequences arising out of or resulting from the use of the
information contained herein.

Safety information

Important information

Read these instructions carefully and look at the equipment to become familiar
with the device before trying to install, operate, service, or maintain it. The
following special messages may appear throughout this manual or on the
equipment to warn of potential hazards or to call attention to information that
clarifies or simplifies a procedure.

The addition of either symbol to a “Danger” or “Warning” safety label indicates
that an electrical hazard exists which will result in personal injury if the
instructions are not followed.

This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that accompany this symbol to avoid possible
injury or death.

Conzerv EM6400NG+

DANGER

DANGER indicates a hazardous situation which, if not avoided, will result in

death or serious injury.

Failure to follow these instructions will result in death or serious injury.

WARNING

WARNING indicates a hazardous situation which, if not avoided, could result
in death or serious injury.

CAUTION

CAUTION indicates a hazardous situation which, if not avoided, could result in

minor or moderate injury.

NOTICE

NOTICE is used to address practices not related to physical injury.

Please note

Electrical equipment should be installed, operated, serviced and maintained only
by qualified personnel. No responsibility is assumed by Schneider Electric for any
consequences arising out of the use of this material. A qualified person is one who
has skills and knowledge related to the construction, installation, and operation of
electrical equipment and has received safety training to recognize and avoid the
hazards involved.

NHA2768503-05 3

Conzerv EM6400NG+

Notices

FCC

This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at
his own expense.

The user is cautioned that any changes or modifications not expressly approved
by Schneider Electric could void the user’s authority to operate the equipment.

This digital apparatus complies with CAN ICES-3 (A) /NMB-3(A).

4 NHA2768503-05

Table of Contents

Safety precautions ......................................................................................9

Introduction ................................................................................................10

Meter overview......................................................................................... 10

Meter features..........................................................................................10

Feature summary .....................................................................................10

Measured parameters...............................................................................12

Data display and analysis tools..................................................................13

Meter configuration...................................................................................13

Hardware references................................................................................ 14

Meter types .............................................................................................. 14

Supplemental information..........................................................................14

Panel meter .............................................................................................14

Tamper-resistant cover ............................................................................. 15

Meter mounting ........................................................................................15

Meter wiring .............................................................................................15

Direct connect voltage limits ......................................................................15

Balanced system considerations................................................................17

Serial communications..............................................................................17

Pulse output............................................................................................. 19

Conzerv EM6400NG+

Energy ...............................................................................................12

Demand .............................................................................................12

Instantaneous.....................................................................................12

Power quality...................................................................................... 12

Power Monitoring Expert ..................................................................... 13

Power SCADA Operation .................................................................... 13

RS-485 wiring..................................................................................... 18

Display and meter setup ..........................................................................20

Display overview ......................................................................................20

LED indicators.......................................................................................... 20

Energy pulsing LED ............................................................................21

Heartbeat / serial communications LED ................................................21

Button functions ....................................................................................... 21

Meter screen menus ................................................................................. 22

Display screen menus .........................................................................22

Setup screen menus ........................................................................... 24

Demand .............................................................................................30

Communications setup........................................................................ 32

Setting up the password ......................................................................32

Setting up date and time......................................................................33

Diagnostics (Diag) screen menus......................................................... 33

Clear screen menus ............................................................................35

Lock / Unlock...................................................................................... 37

Remote meter setup ................................................................................. 38

Overview ................................................................................................. 38

ION setup ................................................................................................ 38

RS-485 port setup .................................................................................... 38

Using a serial communications converter to set up RS-485 .................... 38

NHA2768503-05 5

Conzerv EM6400NG+

Meter setup through RS-485 .....................................................................39

Meter configuration using ION setup .......................................................... 39

Viewing meter data ...................................................................................40

Viewing meter data from the display ...........................................................40

Using ION Setup to view or modify configuration data.................................. 41

Using software to view meter data..............................................................41

Power Monitoring Expert ........................................................................... 42

Power SCADA Operation .........................................................................42

Modbus command interface ......................................................................42

Measurements and calculations ............................................................. 43

Meter initialization.....................................................................................43

Real-time readings ................................................................................... 43

Energy measurements..............................................................................43

Quadrant based VARh ..............................................................................43

Min/max values ........................................................................................44

Power demand .........................................................................................44

Power demand calculation methods ..................................................... 44

Block interval demand .........................................................................44

Synchronized demand......................................................................... 45

Thermal demand ................................................................................45

Current demand .......................................................................................46

Predicted demand............................................................................... 46

Peak demand ..................................................................................... 47

Timer.......................................................................................................47

Power quality .............................................................................................48

Harmonics overview ................................................................................. 48

Total harmonic distortion %........................................................................48

Harmonic content calculations ............................................................. 48

THD% calculations..............................................................................48

Displaying harmonics data ........................................................................ 48

Maintenance and upgrades..................................................................... 50

Maintenance overview .............................................................................. 50

Troubleshooting LED indicators .................................................................50

Meter memory..........................................................................................50

Meter battery............................................................................................50

Viewing firmware version, model and serial number ....................................51

Firmware upgrades................................................................................... 51

Firmware upgrade using DLF3000 .......................................................51

Technical assistance .................................................................................52

Verifying accuracy..................................................................................... 53

Overview of meter accuracy ...................................................................... 53

Accuracy test requirements .......................................................................53

Verifying accuracy test ..............................................................................54

Required pulses calculation for accuracy verification testing ........................ 55

Total power calculation for accuracy verification testing ...............................56

Percentage error calculation for accuracy verification testing ....................... 56

Accuracy verification test points.................................................................56

Energy pulsing considerations ...................................................................57

VT and CT considerations..........................................................................57

Example calculations ................................................................................ 58

6 NHA2768503-05

Conzerv EM6400NG+

Typical sources of test errors .....................................................................59

Power and power factor ...........................................................................60

Power and power factor ............................................................................ 60

Current phase shift from voltage ................................................................60

Real, reactive and apparent power (PQS)................................................... 60

Power factor (PF) ..................................................................................... 61

Power factor sign convention ...............................................................61

Power factor min/max convention.........................................................62

Power factor register format................................................................. 63

Specifications ............................................................................................65

NHA2768503-05 7

Safety precautions Conzerv EM6400NG+

Safety precautions

Installation, wiring, testing and service must be performed in accordance with all
local and national electrical codes.

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

• Apply appropriate Personal Protective Equipment (PPE) and follow safe
electrical work practices. See NFPA 70E, CSA Z462 or other local
standards.

• Turn off all power supplying this device and the equipment in which it is
installed before working on or in the equipment.

• Always use a properly rated voltage sensing device to confirm that all power
is off.

• Follow guidelines in the Wiring section of the related Installation Sheet.

• Assume communications and I/O wiring are hazardous live until determined
otherwise.

• Do not exceed the maximum ratings of this device.

• Do not short secondary terminals of Voltage Transformer (VT).

• Do not open secondary terminals of Current Transformer (CT).

• Ground secondary circuit of CTs.

• Do not use the data from the meter to confirm power is off.

• Replace all devices, doors and covers before turning on power to this
equipment.

Failure to follow these instructions will result in death or serious injury.

NOTE: See IEC 60950-1 for more information on communications and I/O

wiring connected to multiple devices.

WARNING

UNINTENDED OPERATION

• Do not use this device for critical control or protection of persons, animals,
property or equipment.

Failure to follow these instructions can result in death, serious injury, or
equipment damage.

WARNING

POTENTIAL COMPROMISE OF SYSTEM AVAILABILITY, INTEGRITY, AND
CONFIDENTIALITY

• Change default passwords/passcodes to help prevent unauthorized access
to device settings and information.

• Disable unused ports/services and default accounts, where possible, to
minimize pathways for malicious attacks.

• Place networked devices behind multiple layers of cyber defenses (such as
firewalls, network segmentation, and network intrusion detection and
protection).

• Use cybersecurity best practices (for example: least privilege, separation of
duties) to help prevent unauthorized exposure, loss, modification of data and
logs, interruption of services, or unintended operation.

Failure to follow these instructions can result in death, serious injury, or
equipment damage.

NHA2768503-05 9

Conzerv EM6400NG+ Introduction

Introduction

Meter overview

The EM6400NG+ series meters are digital meters that offer comprehensive 3­phase electrical instrumentation and load management facilities in a compact and
rugged package.

The EM6400NG+ meters offer value for the demanding needs of your energy
monitoring and cost management applications. All meters in the EM6400NG+
series range comply with Class 1, Class 0.5S, or Class 0.2 accuracy standards
and feature high quality, reliability and affordability in a compact and easy to install
format.

Meter features

The EM6400NG+ meter supports many features, a few of the features are listed
below:

• LED display screen: Intuitive self-guided navigation using three buttons LED
display, with three lines of concurrent values. Two columns of LEDs given on
the either side of the meter’s front panel indicate the parameter name being
displayed.

• Energy accounting and balancing.

• Measurement of both True PF and Displacement PF.

• EM6400NG+ POP (Class 1 and 0.5S) and RS-485 (Class 1, 0.5S, and 0.2)
models.

• THD% and individual harmonics up to 15

• Active, reactive, and apparent energy readings.

• Min/Max values of instantaneous parameters with timestamp.

• Cybersecurity: The meter supports the disabling of RS-485 port through front
panel keys to prevent unauthorized access. Toggle the RTU devices in case
of limited availability of nodes in software system.

• Suppression current: The meter can be configured to disregard the
measurement of induced / auxiliary load current in the circuit (can be set from
5 to 99 mA).

You can use the meter as a stand-alone device, but its extensive capabilities are
fully realized when used as part of an energy management system.

th

order for voltage and current.

For applications, feature details and the most current and complete specifications
of the EM6400NG+ meters, see the EM6400NG+ technical datasheet at www.se.

com.

Feature summary

Parameter EM6400NG+ POP EM6400NG+ RS-485

Accuracy Class for Wh Class 1

Class 0.5S

Accuracy Class for VARh 2.0

1.0

Sampling rate per cycle 64 64

Current:

• Per-phase and 3 phase average

• Calculated neutral current

10 NHA2768503-05

✔ ✔

Class 1

Class 0.5S

Class 0.2

2.0

1.0

Introduction Conzerv EM6400NG+

Parameter EM6400NG+ POP EM6400NG+ RS-485

Voltage:

• V L-N - per-phase and 3 phase average

• V L-L - per-phase and 3 phase average

✔ ✔

Power Factor

• Per phase and 3 phase total

Frequency

Power:

True PF True PF

Displacement PF

✔ ✔

✔ ✔

• Active power (kW) - Phase wise and total

• Apparent power (kVA) - Phase wise and total

• Reactive power (kVAR) - Phase wise and total

3 Phase unbalance Current Current

Voltage

Demand parameters (kW, kVA, kVAR, I)

• Last demand

✔

(no timestamp)

✔

• Present demand

• Predictive demand

• Peak demand: Timestamp for peak demand

Energy: kWh, kVAh, kVARh (4 Quadrant)

• Delivered (Import / Forward)

• Received (Export / Reverse)

1

Delivered

Received

Delivered

Received

Total

1

Net

Last cleared (Old)

Meter On hours

—

✔

Load Run hours

Power Interruptions

1

1

1

1

THD:

✔ ✔

• Voltage L-N per phase

• Voltage L-L per phase

• Current per phase

Individual Harmonics

1

Min / Max with timestamp

1

—

—

Up to 15th odd harmonics

✔

• V L-L average

• V L-N average

• Current average

• Frequency

• Active power, Total

• Apparent power, Total

• Reactive power, Total

• Power factor, Total

RTC

—

✔

Communication POP RS-485 Modbus RTU

Retrofit (RtFt)

—

✔

For configuring legacy communication data models

1. Indicates features that can be read through communication only.

NHA2768503-05 11

Conzerv EM6400NG+ Introduction

Measured parameters

Energy

The meter provides bi-directional, 4-quadrant, Class 1 / Class 0.5S / Class 0.2
accurate energy metering.

The meter stores all accumulated active, reactive and apparent energy
parameters in non-volatile memory:

• kWh, kVARh, kVAh (delivered)

• kWh, kVARh, kVAh (received)

• kWh, kVARh, kVAh (delivered + received)

• kWh, kVARh, kVAh (delivered - received)

NOTE: Based on the energy scale selection, when any of energy parameters
overflow at 999999999.999 all energy parameters value resets.

Demand

The meter provides last, present, predicted, and maximum (peak) demand values,
and a timestamp when the maximum (peak) demand occurred.

Instantaneous

The meter supports standard demand calculation methods, including sliding block,
fixed block, rolling block, thermal and synchronized.

Peak demand registers can be reset manually (password protected).

Demand measurements include:

• W, VAR, VA demand total

• Amps demand average

The meter provides highly accurate 1-second measurements, average values,
including true RMS, per phase and total for:

• Per phase and average voltage (line-to-line, line-to-neutral)

• Per phase and average current, and neutral current

NOTE: Neutral current is calculated.

• Per phase and total power (VA, W, Var)

• Per phase and average for true and displacement power factor

• System frequency

• Per phase and maximum of all three for voltage unbalance and current
unbalance

Power quality

The meter provides complete harmonic distortion metering, recording, and real­time reporting, up to the 15

The following power quality measurements are available:

• Individual odd harmonics up to 15

• Total harmonic distortion (THD%) for current and voltage (displays line-to-line
or line-to-neutral, based on selected system configuration)

12 NHA2768503-05

th

harmonic for all voltage and current inputs.

th

order (voltage and current, per phase)

Introduction Conzerv EM6400NG+

Data display and analysis tools

Power Monitoring Expert

EcoStruxure™Power Monitoring Expert is a complete supervisory software
package for power management applications.

The software collects and organizes data gathered from your facility’s electrical
network and presents it as meaningful, actionable information via an intuitive web
interface.

Power Monitoring Expert communicates with devices on the network to provide:

• Real-time monitoring through a multi-user web portal

• Trend graphing and aggregation

• Power quality analysis and compliance monitoring

• Preconfigured and custom reporting

See the EcoStruxure
how to add your device into its system for data collection and analysis.

Power SCADA Operation

™

Power Monitoring Expert online help for instructions on

EcoStruxure™Power SCADA Operation is a complete real-time monitoring and
control solution for large facility and critical infrastructure operations.

It communicates with your device for data acquisition and real-time control. You
can use Power SCADA Operation for:

See the EcoStruxure
how to add your device into its system for data collection and analysis.

Meter configuration

Meter configuration is performed through the display or through ION Setup.

ION Setup is a meter configuration tool that can be downloaded for free at

www.se.com.

See the Conzerv EM6400NG Load Manager topic in the ION Setup online help or
in the ION Setup device configuration guide. To download a copy, go to

www.se.com and search for ION Setup device configuration guide.

• System supervision

• Real-time and historical trending, event logging

• PC-based custom alarms

™

Power SCADA Operation online help for instructions on

NHA2768503-05 13

Conzerv EM6400NG+ Hardware references

Hardware references

Meter types

The EM6400NG+ series is available in one physical form factor.

Commercial Reference Description

METSEEM6400NGPOCL1 Class 1 panel mount meter with pulse output and integrated display.

METSEEM6400NGPOCL5 Class 0.5S panel mount meter with pulse output and integrated

METSEEM6400NGRSCL1 Class 1 panel mount meter with RS-485 and integrated display.

METSEEM6400NGRSCL5 Class 0.5S panel mount meter with RS-485 and integrated display.

METSEEM6400NGRSCL2 Class 0.2 panel mount meter with RS-485 and integrated display.

Supplemental information

This document is intended to be used in conjunction with the installation sheet that
ships in the box with your device and accessories.

See your device’s installation sheet for information related to installation.

See your product’s catalog pages at www.se.com for information about your
device, its options and accessories.

You can download updated documentation from www.se.com or contact your local
Schneider Electric representative for the latest information about your product.

Panel meter

display.

The back of your meter supports various power system connections.

14 NHA2768503-05

Hardware references Conzerv EM6400NG+

A Auxiliary power supply (control power) terminals (L+, N-)

B Input voltage terminals (V1, V2, V3, VN)

C Retainer clip

D Input current terminals [A1(S1, S2), A2 (S1, S2), A3 (S1, S2)]

E RS-485 communications/POP terminals (D1+, D0-)

F Protective cover

Tamper-resistant cover

The tamper-resistant cover helps prevent tampering with the meter’s voltage and
current measurement inputs.

The tamper-resistant cover encloses the terminals, the conductor fixing screws
and a length of the external conductors and their insulation. The covers are
secured by tamper-resistant meter seals.

The meter’s tamper-resistant cover must be installed by a qualified installer.

Meter mounting

For mounting instructions and safety precautions, see the installation sheet that
was shipped with your device

You can also download the latest copy at www.se.com.

Meter wiring

For wiring instructions and safety precautions, see the meter installation sheet that
was shipped with your meter.

You can also download the latest copy at www.se.com.

Direct connect voltage limits

You can connect the meter’s voltage inputs directly to the phase voltage lines of
the power system if the power system’s line-to-line or line-to-neutral voltages do
not exceed the meter’s direct connect maximum voltage limits.

The meter's voltage measurement inputs are rated by the manufacturer for up to
277 V L-N / 480 V L-L. However, the maximum voltage allowed for direct
connection may be lower, depending on the local electrical codes and regulations.
As per installation category II / III the maximum voltage on the meter voltage
measurement inputs should not exceed 277 V L-N / 480 V L-L for CAT III and 347
V L-N / 600 V L-L for CAT II.

If your system voltage is greater than the specified direct connect maximum
voltage, you must use VTs (voltage transformers) to step down the voltages.

NHA2768503-05 15

Conzerv EM6400NG+ Hardware references

N

Power system
description

Single-phase 2­wire line-to­neutral

Single-phase 2­wire line-to-line

Single-phase 3­wire line-to-line
with neutral

3-phase 3-wire
Delta
ungrounded

Meter setting Symbol Direct connect maximum (UL / IEC) # of VTs (if

required)
Display
(meter)

1P.LN 1PH 2Wire L-N

1P.LL 1PH 2Wire L-L

1P.3L 1PH 3Wire L-L

3P.3L 3PH 3Wire

Display
(communication)

with N

Installation
category III

Installation
category II

≤ 277 V L-N ≤ 347 V L-N 1 VT

480 V L-L 600 V L-L 1 VT

≤ 277 V L-N / 480
V L-L

≤ 347 V L-N / 600
V L-L

2 VT

480 V L-L 600 V L-L 2 VT

Ungrounded Delta

3-phase 3-wire
Delta corner
grounded

3-phase 3-wire
Wye ungrounded

3-phase 3-wire
Wye grounded

3-phase 3-wire
Wye resistance­grounded

3PH 3Wire Corner
Grounded Delta

3PH 3Wire
Ungrounded Wye

3PH 3Wire
Grounded Wye

3PH 3Wire
Resistance
Grounded Wye

480 V L-L 600 V L-L 2 VT

480 V L-L 600 V L-L 2 VT

480 V L-L 600 V L-L 2 VT

480 V L-L 600 V L-L 2 VT

3-phase 4-wire
open Delta
center-tapped

3P.4L 3PH 4Wire

Center-Tapped
Open Delta

240 V L-N / 480 V
L-L

240 V L-N / 480 V
L-L

3 VT

16 NHA2768503-05

Hardware references Conzerv EM6400NG+

N

N

N

Power system
description

3-phase 4-wire
Delta center­tapped

3-phase 4-wire
ungrounded Wye

3-phase 4-wire
grounded Wye

Meter setting Symbol Direct connect maximum (UL / IEC) # of VTs (if

Display
(meter)

Display
(communication)

3PH 4Wire
Center-Tapped
Delta

3PH 4Wire
Ungrounded Wye

3PH 4Wire
Grounded Wye

Installation
category III

240 V L-N / 480 V
L-L

≤ 277 V L-N / 480
V L-L

≤ 277 V L-N / 480
V L-L

Installation
category II

240 V L-N / 480 V
L-L

≤ 347 V L-N / 600
V L-L

≤ 347 V L-N / 600
V L-L

required)

3 VT

3 VT or 2 VT

3 VT or 2 VT

3-phase 4-wire
resistance­grounded Wye

3PH 4Wire
Resistance
Grounded Wye

Balanced system considerations

In situations where you are monitoring a balanced 3-phase load, you may choose
to connect only one or two CTs on the phase(s) you want to measure, and then
configure the meter so it calculates the current on the unconnected current
input(s).

NOTE: For a balanced 4-wire Wye system, the meter’s calculations assume
that there is no current flowing through the neutral conductor.

Balanced 3-phase Wye system with 2 CTs

The current for the unconnected current input is calculated so that the vector sum
for all three phases equal zero.

Balanced 3-phase Wye or Delta system with 1CT

≤ 277 V L-N / 480
V L-L

≤ 347 V L-N / 600
V L-L

3 VT or 2 VT

The currents for the unconnected current inputs are calculated so that their
magnitude and phase angle are identical and equally distributed, and the vector
sum for all three phase currents equal zero.

NOTE: You must always use 3 CTs for 3-phase 4-wire center-tapped Delta or
center-tapped open Delta systems.

Serial communications

The meter supports serial communications through the RS-485 port. Up to 32
devices can be connected on a single RS-485 bus.

NHA2768503-05 17

Conzerv EM6400NG+ Hardware references

+

-

120 Ω

C

+

-

In an RS-485 network, there is one master device, typically an Ethernet to RS-485
gateway. It provides the means for RS-485 communications with multiple slave
devices (for example, meters). For applications that require only one dedicated
computer to communicate with the slave devices, an RS-232 to RS-485 converter
can be used as the master device.

RS-485 wiring

Connect the devices on the RS-485 bus in a point-to-point configuration, with the
(+) and (-) terminals from one device connected to the corresponding (+) and (-)
terminals on the next device.

NOTE:

Straight-line topology only. Loop or ring topology is not supported.

Resistor is an optional accessory that you can order separately. To terminate a
series, it is recommended to use a 120 Ω / 0.5 W resistor.

RS-485 cable

Use a shielded 2 wires or 1 twisted pair RS-485 cable to wire the devices. Use the
twisted pair to connect the (+) and (-) terminals.

RS-485 terminals

C Common. This provides the voltage reference (zero volts) for the data plus and data minus

signals

Shield. Connect the bare wire to this terminal to help suppress signal noise that may be
present. Ground the shield wiring at one end only (either at the master or the last slave
device, but not both.

-

Data minus. This transmits/receives the inverting data signals.

+

Data plus. This transmits/receives the non-inverting data signals.

NOTE: If some devices in your RS-485 network do not have the C terminal,
use the bare wire in the RS-485 cable to connect the C terminal from the
meter to the shield terminal on the devices that do not have the C terminal.

RS-485 maximum cable length

The total distance for devices connected on an RS-485 bus should not exceed
900 m (2953 ft).

RS-485 network configuration

After you have wired the RS-485 port and powered up the meter, you must
configure the serial communications port in order to communicate with the meter.
Each device on the same RS-485 communications bus must have a unique
address and all connected devices must be set to the same protocol, baud rate,
and parity (data format).

NOTE: To communicate with the meter using ION Setup, you must set the
serial site and all connected devices in the RS-485 network to the same parity
setting.

18 NHA2768503-05

Hardware references Conzerv EM6400NG+

D1+

≤40 V

≤20 mA

D1-

(60)

(61)

Pulse output

The meter is equipped with one pulse output port (D1+, D0-).

You can configure the pulse outputs for use in the following application:

• Energy pulsing applications, where a receiving device determines energy
usage by counting the k_h pulses coming from the meter’s pulse output port.

One pulse output can handle voltage less than or equal to 40 V DC (20 mA
maximum). For higher voltage applications, use an external relay in the switching
circuit.

NHA2768503-05 19

Conzerv EM6400NG+ Display and meter setup

Conzerv EM6400NG+

%

%

%

Display and meter setup

Display overview

The display lets you use the meter to perform various tasks such as setting up the
meter, displaying data screens, or performing resets.

LED indicators

A Phase measurements V

B Demand measurements DM, PrsDM, PrdDM, MD

C RTC Date and time

D Negative indicator

E Navigation key To navigate down

F Energy readings Apparent energy, Active

G Navigation key To navigate up

H OK Enter key

I Energy pulsing LED (Red)

J x 1000 indicator

K System measurements V

Heartbeat / communications LED (Green)

, V

, I, kVA, kW, kVAR,

L-N

L-L

THD

, kVA, F, I

avg

unb

, I

THD

, kW, In, PF

avg

PF, V

energy, and Reactive energy

To toggle between
measurement parameters

kVAR, I

avg

,

The LED indicators alert or inform you of meter activity.

20 NHA2768503-05

Display and meter setup Conzerv EM6400NG+

A Alarm / energy pulsing LED (Red)

B Heartbeat / serial communications LED (Green)

Energy pulsing LED

The EM6400NG+ meter has an energy pulsing LED that can be configured for
energy pulsing.

This LED flashes at a rate proportional to the amount of energy consumed. This is
typically used to verify the meter’s accuracy.

NOTE: EM6400NG+ meter does not support alarm function.

Heartbeat / serial communications LED

The heartbeat / serial communications LED blinks to indicate the meter’s
operation and serial Modbus communications status.

The LED blinks at a slow, steady rate to indicate the meter is operational. The LED
flashes at a variable, faster rate when the meter is communicating over a Modbus
serial communications port.

You cannot configure this LED for other purposes.

NOTE: A heartbeat LED that remains lit and does not blink (or flash) can
indicate a problem. In this case, power down the meter and reapply power. If
the LED still does not blink or flash, contact Technical Support.

Button functions

The meter supports single press and combination press functions of the buttons.

Symbol Description

To navigate down the list of items.

To move cursor to the left.

Press and hold for 2

seconds.

To navigate up the list of items.

To move cursor to the right.

Press and hold for 2

seconds.

NHA2768503-05 21