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.

Conzerv EM6400NG+

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.

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.

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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).

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Conzerv EM6400NG+

Table of Contents
Safety precautions......................................................................................	9
Introduction................................................................................................	10
Meter overview.........................................................................................	10
Meter features..........................................................................................	10
Feature summary .....................................................................................	10
Measured parameters...............................................................................	12
Energy ...............................................................................................	12
Demand.............................................................................................	12
Instantaneous.....................................................................................	12
Power quality......................................................................................	12
Data display and analysis tools..................................................................	13
Power Monitoring Expert .....................................................................	13
Power SCADA Operation ....................................................................	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
RS-485 wiring.....................................................................................	18
Pulse output.............................................................................................	19
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

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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
VTand CTconsiderations..........................................................................	57
Example calculations ................................................................................	58

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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

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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.

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Introduction

Introduction

Meter overview

The EM6400NG+ series meters are digital meters that offer comprehensive 3- phase 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 15th order for voltage and current.

•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.

	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 1
	Class 0.5S	Class 0.5S
		Class 0.2
Accuracy Class for VARh	2.0	2.0
	1.0	1.0
Sampling rate per cycle	64	64
Current:

•Per-phase and 3 phase average

•Calculated neutral current

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Introduction

Parameter

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:

•Active power (kW) - Phase wise and total

•Apparent power (kVA) - Phase wise and total

•Reactive power (kVAR) - Phase wise and total

3 Phase unbalance

Demand parameters (kW, kVA, kVAR, I)

•Last demand

•Present demand

•Predictive demand

•Peak demand: Timestamp for peak demand 1

Energy: kWh, kVAh, kVARh (4 Quadrant)

•Delivered (Import / Forward)

•Received (Export / Reverse)

Meter On hours

Load Run hours

Power Interruptions

THD:

•Voltage L-N per phase

•Voltage L-L per phase

•Current per phase

Individual Harmonics 1

Min / Max with timestamp 1

•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

Retrofit (RtFt)

For configuring legacy communication data models

	Conzerv EM6400NG+
EM6400NG+ POP	EM6400NG+ RS-485
True PF	True PF
	Displacement PF 1
Current	Current
	Voltage 1
(no timestamp)
Delivered	Delivered
Received	Received
	Total 1
	Net 1
	Last cleared (Old) 1
—
—	Up to 15th odd harmonics
—

—
POP	RS-485 Modbus RTU
—

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

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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.

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

Instantaneous

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 15th harmonic for all voltage and current inputs.

The following power quality measurements are available:

•Individual odd harmonics up to 15th order (voltage and current, per phase)

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

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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™ Power Monitoring Expert online help for instructions on how to add your device into its system for data collection and analysis.

Power SCADA Operation

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:

•System supervision

•Real-time and historical trending, event logging

•PC-based custom alarms

See the EcoStruxure™ Power SCADA Operation online help for instructions on 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

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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
	display.
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

The back of your meter supports various power system connections.

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Hardware references

Conzerv EM6400NG+

AAuxiliary power supply (control power) terminals (L+, N-)

BInput voltage terminals (V1, V2, V3, VN)

CRetainer clip

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

ERS-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.

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Conzerv EM6400NG+						Hardware references
Power system	Meter setting		Symbol	Direct connect maximum (UL / IEC)		# of VTs (if
description	Display	Display		Installation	Installation	required)
	(meter)	(communication)		category III	category II
Single-phase 2-	1P.LN	1PH 2Wire L-N		≤ 277 V L-N	≤ 347 V L-N	1 VT
wire line-to-
neutral
Single-phase 2-	1P.LL	1PH 2Wire L-L		480 V L-L	600 V L-L	1 VT
wire line-to-line
Single-phase 3-	1P.3L	1PH 3Wire L-L		≤ 277 V L-N / 480	≤ 347 V L-N / 600	2 VT
wire line-to-line		with N		V L-L	V L-L
with neutral
3-phase 3-wire	3P.3L	3PH 3Wire		480 V L-L	600 V L-L	2 VT
Delta		Ungrounded Delta
ungrounded
3-phase 3-wire		3PH 3Wire Corner		480 V L-L	600 V L-L	2 VT
Delta corner		Grounded Delta
grounded
3-phase 3-wire		3PH 3Wire		480 V L-L	600 V L-L	2 VT
Wye ungrounded		Ungrounded Wye
3-phase 3-wire		3PH 3Wire		480 V L-L	600 V L-L	2 VT
Wye grounded		Grounded Wye
3-phase 3-wire		3PH 3Wire		480 V L-L	600 V L-L	2 VT
Wye resistance-		Resistance
grounded		Grounded Wye

3-phase 4-wire	3P.4L	3PH 4Wire	240 V L-N / 480 V
open Delta		Center-Tapped	L-L
center-tapped		Open Delta

240 V L-N / 480 V 3 VT L-L

N

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Hardware references

Conzerv EM6400NG+

Power system	Meter setting
description	Display	Display
	(meter)	(communication)
3-phase 4-wire		3PH 4Wire
Delta center-		Center-Tapped
tapped		Delta

3-phase 4-wire	3PH 4Wire
ungrounded Wye	Ungrounded Wye

3-phase 4-wire	3PH 4Wire
grounded Wye	Grounded Wye

3-phase 4-wire	3PH 4Wire
resistance-	Resistance
grounded Wye	Grounded Wye

Symbol

N

N

N

Direct connect maximum (UL / IEC)		# of VTs (if
Installation	Installation	required)
category III	category II
240 V L-N / 480 V	240 V L-N / 480 V	3 VT
L-L	L-L

≤ 277 V L-N / 480	≤ 347 V L-N / 600 3 VTor 2 VT
V L-L	V L-L

≤ 277 V L-N / 480	≤ 347 V L-N / 600 3 VTor 2 VT
V L-L	V L-L

≤ 277 V L-N / 480	≤ 347 V L-N / 600 3 VTor 2 VT
V L-L	V L-L

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

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.

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Hardware references

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.

	C
-
+	+

120

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

CCommon. 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.

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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.

D1-

(61)

≤40 V

≤20 mA

D1+

(60)

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Display and meter setup

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.

		Conzerv EM6400NG+
	%
	%
		%
A	Phase measurements	VL-N, VL-L, I, kVA, kW, kVAR,
		PF, VTHD, ITHD

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
		energy, and Reactive energy
G	Navigation key	To navigate up
H	OK	Enter key
		To toggle between
		measurement parameters
I	Energy pulsing LED (Red)
	Heartbeat / communications LED (Green)
J	x 1000 indicator
K	System measurements	Vavg, kVA, F, Iavg, kW, In, PFavg,
		kVAR, Iunb

LED indicators

The LED indicators alert or inform you of meter activity.

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Display and meter setup

Conzerv EM6400NG+

A

B

Alarm / energy pulsing LED (Red)

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

Press and hold for 2 seconds.

Press and hold for 2 seconds.

Description

To navigate down the list of items.

To move cursor to the left.

To navigate up the list of items.

To move cursor to the right.

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