Schneider Electric EM3555 User Manual

EM3555

Bi-Directional Compact Power and Energy Meter Installation Guide

ZL0093-0A 11/2011

EM3555

HAZARD CATEGORIES AND SPECIAL SYMBOLS

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11/2011

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 bulletin 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 follow this symbol to avoid possible injury or death.

DANGER

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING

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

PLEASE NOTE

FCC NOTICE

CAUTION

CAUTION indicates a potentially hazardous situation which, if not avoided, can result in minor or moderate injury.

CAUTION

CAUTION, used without the safety alert symbol, indicates a potentially hazardous situation which, if not avoided, can result in property damage.

NOTE: Provides additional information to clarify or simplify a procedure.

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.

This equipment has been tested and found to comply with the limits for a Class B 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 residential 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.

This Class B digital apparatus complies with Canadian ICES-003.

ZL0093-0A 11/2011

EM3555

Contents

CONTENTS

Safety Precautions .............................................................................................. 1

Installation Overview ........................................................................................... 1

Specications ...................................................................................................... 2

Introduction ......................................................................................................... 4

Parts of the EM Series ........................................................................................ 4

Dimensions ......................................................................................................... 5

Data Output ........................................................................................................ 6

Installation ........................................................................................................... 7

Supported System Types .................................................................................... 8

Wiring .................................................................................................................. 9

Wiring Diagrams ............................................................................................... 10

Control Power ....................................................................................................11

Fuse Recommendations ....................................................................................11

Wiring Notes ......................................................................................................11

Display Screen Diagram ................................................................................... 12

Quick Setup Instructions ................................................................................... 13

Solid State Pulse Output ................................................................................... 14

User Interface Menu Abbreviations Dened ..................................................... 15

User Interface for Data Conguration ............................................................... 16

Alert/Reset Information ..................................................................................... 18

User Interface for Setup .................................................................................... 19

RS-485 Communications .................................................................................. 21

Data Logging .................................................................................................... 22

Standard Modbus Default Settings ................................................................... 23

Modbus Point Map ............................................................................................ 24

Troubleshooting ................................................................................................ 41

China RoHS Compliance Information ............................................................... 41

i

EM3555 Contents

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ii

ZL0093-0A 11/2011

SAFETY PRECAUTIONS

INSTALLATION OVERVIEW

Safety Precautions

EM3555

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

• Follow safe electrical work practices. See NFPA 70E in the USA or

applicable local codes.

• This equipment must only be installed and serviced by qualied

electrical personnel.

• Read, understand, and follow the instructions before installing this

product.

• Turn off all power supplying equipment before working on or inside

the equipment.

• Always use a properly rated voltage sensing device to conrm power is

off.

• DO NOT DEPEND ON THIS PRODUCT FOR VOLTAGE INDICATION.

• Only install this product on insulated conductors.

• Install device in an appropriate electrical and re enclosure per local

regulations.

• ESD sensitive equipment. Ground yourself and discharge any static

charge before handling this device.

• Any covers that may be displaced during the installation must be

reinstalled before powering the unit.

• Do not install on the load side of a Variable Frequency Drive (VFD), aka

Variable Speed Drive (VSD) or Adjustable Frequency Drive (AFD).

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

NOTE: Observe correct CT orientation.

A. DIN Rail Mounting

B. Screw Mounting

The meter can be mounted in two ways: on standard 35 mm DIN rail or screw-mounted to the interior surface of the enclosure.

1. Disconnect and lock out power. Use a properly rated voltage sensing device to confirm power is off.

2. Attach mounting clips to the underside of the housing by sliding them into the slots from the inside. The stopping pegs must face the housing, and the outside edge of the clip must be flush with the outside edge of the housing.

3. Snap the clips onto the DIN rail.

4. To prevent horizontal shifting across the DIN rail, use two end stop clips.

1. Disconnect and lock out power. Use a properly rated voltage sensing device to confirm power is off.

2. Attach the mounting clips to the underside of the housing by sliding them into the slots from the outside. The stopping pegs must face the housing, and the screw hole must be exposed on the outside of the housing.

3. Use three #8 screws (not supplied) to mount the meter to the inside of the enclosure.

NOTE: For detailed instructions, please see the “Installation” section later in this guide.

1

EM3555 Specifications

SPECIFICATIONS

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Table 1 Specifications

Type Description

Measurement Accuracy

Real Power and Energy IEC 62053-22 Class 0.5S, ANSI C12.20 0.5%

Reactive Power and Energy IEC 62053-23 Class 2, 2%

Current 0.4% (+0.015% per °C deviation from 25°C) from 5% to

Voltage 0.4% (+0.015% per °C deviation from 25°C) from 90 V

Sample Rate 2520 samples per second, no blind time

Data Update Rate 1 sec

Type of Measurement True RMS; One to three phase AC system

Input Voltage Characteristics

Measured AC Voltage Minimum 90 V

Metering Over-Range +20%

Impedance 2.5 MΩ

Frequency Range 45 to 65 Hz

Input Current Characteristics

CT Scaling Primary: Adjustable from 5 A to 32,000 A

Measurement Input Range 0 to 0.333 VAC or 0 to 1.0 VAC (+20% over-range)

Impedance 10.6 kΩ (1/3 V mode) or 32.1 kΩ (1 V mode)

Control Power

AC 5 VA max.; 90 V min.;

DC* 3 W max.; UL and CE: 125 to 300 VDC

Ride Through Time 100 msec at 120 VAC

Output

Alarm Contacts N.C., static output; (30 VAC/DC, 100 mA max. @ 25°C,

Real Energy Pulse Contacts N.O., static output; (30 VAC/DC, 100 mA max. @ 25°C,

RS-485 Port 2-wire, 1200 to 38400 baud, Modbus RTU

Mechanical Characteristics

Weight 0.62 lb (0.28 kg)

IP Degree of Protection (IEC

60529)

Display Characteristics Back-lit blue LCD

Terminal Block Screw Torque 3.5 in·lb (0.4 N·m) nominal/4.4 in·lb (0.5 N·m) max.

Terminal Block Wire Size 14 to 24 AWG

Rail T35 (35mm) DIN Rail per EN50022

100% of range;

0.8% (+0.015% per °C deviation from 25°C) from 1% to 5% of range

600 VAC

L-L

(156 V

UL Maximums: 600 V

L-N

CE Maximums: 300 V

/5 MΩ

L-N

UL Maximums: 600 V CE Maximums: 300 V

) for stated accuracy;

L-L

(347 V

L-L

(520 V

L-N

L-L

(347 V

L-L

(520 V

L-N

);

L-N

)

L-L

);

L-N

)

L-L

derate 0.56 mA per °C above 25°C)

IP40 front display; IP20 Meter

11/2011

to

L-N

2

ZL0093-0A 11/2011

Specifications

Type Description

Environmental Conditions

Operating Temperature -30° to 70°C (-22° to 158°F)

Storage Temperature -40° to 85°C (-40° to 185°F)

Humidity Range <95% RH (non-condensing)

Altitude of Operation 3 km max.

Metering Category

US and Canada CAT III; for distribution systems up to 347 V

CE CAT III; for distribution systems up to 300 V

Dielectric Withstand Per UL 508, EN61010

Conducted and Radiated Emissions

Conducted and Radiated Immunity

FCC part 15 Class B, EN55011/EN61000 Class B; (residential and light industrial)

EN61000 Class A (heavy industrial)

Safety

US and Canada (cULus) UL508 (open type device)/CSA 22.2 No. 14-05

Europe (CE) EN61010-1:2001

* External DC current limiting is required, see fuse recommendations.

/600 VAC

L-N

/480 VAC

L-N

EM3555

L-L

For use in a Pollution Degree 2 or better environment only. A Pollution Degree 2 environment must control conductive pollution and the possibility of condensation or high humidity. Consideration must be given to the enclosure, the correct use of ventilation, thermal properties of the equipment and the relationship with the environment.

Always use this product in the manner specied or the protection provided by

the product may be impaired.

Provide a disconnect device to disconnect the meter from the supply source. Place this device in close proximity to the equipment and within easy reach of the operator, and mark it as the disconnecting device. The disconnecting device shall meet the relevant requirements of IEC 60947-1 and IEC 60947-3 and shall be suitable for the application. In the US and Canada, disconnecting fuse holders can be used. Provide overcurrent protection and disconecting device for supply conductors with approved current limiting devices suitable for

protecting the wiring. If the equipment is used in a manner not specied by the

manufacturer, the protection provided by the device may be impaired.

FCC PART 15 INFORMATION

NOTE: This equipment has been tested by the manufacturer and found to comply with the limits for a class B 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 residential 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 may cause harmful interference in which case the user will be required to correct the interference at his own

expense. Modications to this product without the express authorization of the

manufacturer nullify this statement.

N998

3

EM3555

Loss Alarm

kWh

1234.5

Introduction

INTRODUCTION

Parts of the EM Series

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The EM3555 DIN Rail Power Meter provides a solution for measuring energy data with a single device. Inputs include Control Power, CTs, and 3-phase voltage. The EM3555 supports multiple output options, including solid state relay contacts, Modbus, data logging, and pulse. The LCD screen on the faceplate allows instant output viewing.

The EM3555 Meter is capable of bidirectional metering. Power is monitored in both directions (upstream and downstream from the meter). The meter is housed in a plastic enclosure suitable for installation on T35 DIN rail according to EN50022. The EM3555 can be mounted either on a DIN rail or in a panel.

Observe correct CT orientation when installing the device.

Figure 1 shows the parts of the EM Series Compact Power and Energy Meter.

Figure 1 EM Series Meter

IA

IB

IC

-+-+-

A B C Alarm Energy

+

Phase

Pulse

Modbus

OUTPUT

Shield

Two 5-character rows of display text. Top row alphanumeric; Bottom row numeric only

The red Alarm LED lights when any of the 3 phase voltages drop below the selected threshold. The green Energy LED lights momentarily each time the Energy output pulse is active.

- 600V

CE: 90V

L-L

NC NO + - S

CONTROL POWER

- 300V

L-N

0.1A 50/60 Hz

Earth

Common - 1 or 1/3 VAC Input

EM35XX

VOLTAGE INPUTS CAT III 50/60 Hz

A B C N 1 2

VA

VB

VC

UL: 90V

L-N

Neutral

Control

Power

4

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DIMENSIONS

Figure 2 EM Series Dimensions

2.3”

(59 mm)

Meter Housing

4.2”

(107 mm)

1.8”

(45 mm)

(39 mm)

3.6”

(91 mm)

1.5”

1.9”

(48 mm)

EM3555

Dimensions

Bottom View (DIN Mount Option)

3.6 “

(91 mm)

0.2 “

(4 mm)

Bottom View (Screw Mount Option)

2.4 “

(61 mm)

4.2 “

(107 mm)

1.2 “

(31 mm)

++

0.3 “

(8 mm)

(99 mm)

4.3 “

(109 mm)

3.9“

+

0.4 “

(10 mm)

5

EM3555 Data Output

DATA OUTPUT

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Table 2 Data Output

Full Data Set (FDS):

Signed Power: real, reactive, and apparent 3-phase total and per phase

Real and Apparent Energy Accumulators: import, export, and net; 3-phase total and per phase

Reactive Energy Accumulators by Quadrant: 3-phase totals and per phase

Congurable for CT & PT ratios, system type, and passwords

Diagnostic alerts

Current: 3-phase average and per phase

Volts: 3-phase average and per phase line-line and line-neutral

Power Factor: 3-phase average and per phase

Frequency

Power Demand: most recent and peak (import and export)

Demand Conguration: xed, rolling block, and external sync

Data Logging:

Real Time Clock: user congurable

10 user congurable log buffers: each buffer holds 5760 16-bit entries (user congures which 10

data points are stored in these buffers)

User congurable logging interval (when congured for a 15 minute interval, each buffer holds 60

days of data)

Continuous and Single Shot logging modes: user selectable

Auto write pause: read logs without disabling the meter’s data logging mode

6

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INSTALLATION

EM3555

Installation

NOTE: Observe correct CT orientation.

The meter can be mounted in two ways: on standard 35 mm DIN rail or screw-mounted to the interior surface of the enclosure.

A. DIN Rail Mounting

1. Disconnect and lock out power. Use a properly rated voltage sensing device to confirm power is off.

2. Attach mounting clips to the underside of the housing by sliding them into the slots from the inside. The stopping pegs must face the housing, and the outside edge of the clip must be flush with the outside edge of the housing.

3. Snap the clips onto the DIN rail. See diagram of the underside of the housing (Figure 3).

Figure 3 Attach mounting clips for DIN Rail

with outside edge

Snap onto

Insert clips from

inside

DIN rail

4. To prevent horizontal shifting across the DIN rail, use two end stop clips.

B. Screw Mounting

1. Disconnect and lock out power. Use a properly rated voltage sensing device to confirm power is off.

2. Attach the mounting clips to the underside of the housing by sliding them into the slots from the outside. The stopping pegs must face the housing, and the screw hole must be exposed on the outside of the housing.

3. Use three #8 screws (not supplied) to mount the meter to the inside of the enclosure. See diagram of the underside of the housing (Figure 4).

Figure 4 Attach Clips for screw mounting

Insert clips from

outside

Screw holes exposed for mounting

7

EM3555 Supported System Types

SUPPORTED SYSTEM TYPES

Table 3 Supported system types

CTs Voltage Connections System Type Phase Loss Measurements Wiring Diagram

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The meter has a number of different possible system wiring congurations (see Wiring Diagrams). To congure the meter, set the System Type via the User

Interface or Modbus register 130. The System Type tells the meter which of its current and voltage inputs are valid, which are to be ignored, and if neutral is connected. Setting the correct System Type prevents unwanted energy accumulation on unused inputs, selects the formula to calculate the Theoretical Maximum System Power, and determines which phase loss algorithm is to be

used. The phase loss algorithm is congured as a percent of the Line-to-Line

System Voltage (except when in System Type 10) and also calculates the

expected Line to Neutral voltages for system types that have Neutral (12 & 40).

Values that are not valid in a particular System Type will display as “----” on the User Interface or as QNAN in the Modbus registers.

Number of wires

Qty ID Qty ID Type Modbus

Register 130

User Interface: SETUP> S SYS

VLL VLN Balance Diagram number

Single-Phase Wiring

2 1 A 2 A, N L-N 10 1L + 1n AN 1

2 1 A 2 A, B L-L 11 2L AB 2

3 2 A, B 3 A, B, N L-L with N 12 2L + 1n AB AN, BN AN-BN 3

Three-Phase Wiring

3 3 A, B, C3 A, B, C Delta 31 3L AB, BC,

4 3 A, B, C4 A, B,

C, N

Grounded Wye 40 3L + 1n AB, BC, CAAN, BN, CNAN-BN-CN &

CA

AB-BC-CA 4

AB-BC-CA

5, 6

8

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WIRING

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

• Apply appropriate personal protective equipment (PPE) and follow safe

electrical work practices. See NFPA 70E in the USA or applicable local codes.

• This equipment must only be installed and serviced by qualied electrical

personnel.

• Turn off all power supplying equipment before working on or inside the

equipment.

• Always use a properly rated voltage sensing device to conrm power is

off.

• Read, understand, and follow the instructions before installing this

product.

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

To avoid distortion, use parallel wires for control power and voltage inputs.

The following symbols are used in the wiring diagrams on the following pages.

Table 5 Wiring Symbols

EM3555

Wiring

DANGER

Symbol Description

Voltage Disconnect Switch

Fuse (installer is responsible for ensuring compliance with local requirements. No fuses are included with the meter.)

Earth ground

S1

S2

Current Transducer

Potential Transformer

Protection device containing a voltage disconnect switch with a fuse or disconnect circuit breaker. The protection device must be rated for the available short-circuit current at the connection point.

CAUTION

RISK OF EQUIPMENT DAMAGE

• This product is designed only for use with 1V or 0.33V current

transducers (CTs).

• DO NOT USE CURRENT OUTPUT (e.g. 5A) CTs ON THIS

PRODUCT.

Failure to follow these instructions can result in overheating and permanent equipment damage.

9

EM3555 Wiring Diagrams

WIRING DIAGRAMS

WARNING

RISK OF ELECTRIC SHOCK

CT negative terminals are referenced to the meter’s neutral and may be at elevated voltages

· Do not contact meter terminals while the unit is connected

· Do not connect or short other circuits to the CT terminals

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

Diagram 1: 1-Phase Line-to-Neutral 2- Wire System 1 CT Diagram 2: 1-Phase Line-to-Line 2-Wire System 1 CT

Use System Type 10 (1L + 1n)

N L1

Use System Type 11 (2L)

L1 L2

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11/2011

A B C N

X1

X2

White

Black

+

A

-

+

B

-

+

C

-

Diagram 3: 1-Phase Direct Voltage Connection 2 CT

Use System Type 12 (2L + 1n) Use System Type 31 (3L)

L1 L2

N

A B C N

X1

X2

X1

X2

White

Black

White

Black

+

A

-

+

B

-

+

C

-

X1

White

Black

X2

Diagram 4: 3-Phase 3-Wire 3 CT no PT

L1 L2 L3

X1

White

Black

X1

X2

White

Black

X1

X2

White

Black

X2

A B C N

+

A

-

+

B

-

+

C

-

A B C N

+

A

-

+

B

-

+

C

-

Diagram 5: 3-Phase 4-Wire Wye Direct Voltage Input Connection

3 CT

Use System Type 40 (3L + 1n)

L1N L2 L3

A B C N

X1

X2

X1

X2

X1

X2

White Black

+

A

-

+

B

-

+

C

-

10

Diagram 6: 3-Phase 4-Wire Wye Connection 3 CT 3 PT

Use System Type 40 (3L + 1n)

L1N L2 L3

A B C N

X1

X2

X1

X2

White Black

White

Black

White

Black

+

A

-

+

B

-

+

C

-

ZL0093-0A 11/2011

CONTROL POWER

EM3555

Control Power

Direct Connect Control Power (Line to Line)

1 2G

L1

L2 L3

Line to Line from 90VAC to 600 VAC (UL) (520 VAC for CE). In UL installations the

lines may be oating (such as a delta). If any lines are tied to an earth (such as a corner

grounded delta), see the Line to Neutral installation limits. In CE compliant installations,

the lines must be neutral (earth) referenced at less than 300 VAC

L-N

Direct Connect Control Power (DC Control Power)

1 2G

Direct Connect Control Power (Line to Neutral)

1 2G

L1N L2 L3

Line to Neutral from 90 VAC to 347 VAC (UL) or 300 VAC (CE)

Control Power Transformer (CPT) Connection

1 2G

L1N L2 L3

DC Control Power from 125 VDC to 300 VDC (UL and CE max.)

FUSE RECOMMENDATIONS

WIRING NOTES

The Control Power Transformer may be wired L-N or L-L. Output to meet meter input requirements

Keep the fuses close to the power source (obey local and national code requirements).

For selecting fuses and circuit breakers, use the following criteria:

• Select current interrupt capacity based on the installation category

and fault current capability.

• Select over-current protection with a time delay.

• The voltage rating should be sufcient for the input voltage applied.

• Provide overcurrent protection and disconnecting means to protect

the wiring. For DC installations, external circuit protection must be provided. Suggested: 0.5 A, time delay fuses.

• The earth connection is required for electromagnetic compatibility

(EMC) and is not a protective earth ground.

• Use 14-24 gauge wire for all connections.

• When tightening terminals, ensure that the correct torque is applied:

3.5 - 4.4 in·lb (0.4-0.5 N·m).

11

EM3555 Display Screen Diagram

DISPLAY SCREEN DIAGRAM

Figure 5 Display Screen

LCD Screen:

Screen Name or Units

Diagnostic Alert

 

Numeric Data

Buttons:

Select

(Up)

 

♥

Tx Rx ERR

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11/2011

Alive Indicator

Export

Import

Transmit Data Receive Data Receive Data Error

(Left) Back

(Right)

Select

12

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QUICK SETUP INSTRUCTIONS

Quick Setup Instructions

EM3555

These instructions assume the meter is set to factory defaults. If it has been

previously congured, all optional values should be checked.

1. Press the + or – button repeatedly until SETUP screen appears.

2. Press to the PASWD screen.

3. Press through the digits. Press + or – to select the password (the default

is 00000). Exit the screen to the right.

4. Press + or – to select the parameter to configure.

5. The first Setup screen is S COM (set RS-485 communications).

a. Press to the ADD R screen and through the address digits. Press +

or – to select the Modbus address.

b. Press to the BAUD screen. Press + or – to select the baud rate.

c. Press to the PAR screen. Press + or – to select the parity.

d. Press back to the S COM screen.

6. Press – to the S CT (Set Current Transducer) screen.

a. Press to the CT V screen. Press + or – to select the voltage mode

Current Transducer output voltage (default is 0.33).

b. Press to the CT SZ screen and through the digits. Press + or – to

select the CT size in amps.

c. Press back to the S CT screen.

7. Press – to the S SYS (Set System) screen.

a. Press to the S Y STM screen. Press + or – to select the System Type

(see wiring diagrams).

b. Press back to the S SYS screen.

8. (Optional) Press – to the S PT (Set Potential Transformer) screen. If PTs are not used, then skip this step.

a. to the R ATIO screen and through the digits. Use the + or – buttons

to select the Potential Transformer step down ratio.

b. back to the S PT screen.

9. – to the S V (Set System Voltage) screen.

a. to the VLL (or VLN if system is 1L-1n) screen and through the digits.

Use the + or – buttons to select the Line to Line System Voltage.

b. back to the S V screen.

10. Use the to exit the setup screen and then SETUP.

11. Check that the wrench is not displayed on the LCD.

a. If the wrench is displayed, press + or – to nd the A LERT screen.

b. Press through the screens to see which alert is on.

For full setup instructions, see the conguration instructions on the following

pages.

13

EM3555 Solid-state Pulse Output

SOLID-STATE PULSE OUTPUT

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The meter has one normally open (N.O.) KY Form A output and one normally closed (N.C.) solid-state output.* One is dedicated to import energy (Wh), and

the other to Alarm. See the Setup section for conguration information.

Figure 6 Solid State Pulse Outputs

Over-Current Protective

Device** (not supplied)

≤ 100 mA

Power Source

~

3-30 VDC

=

6-30 VAC

≤ 100 mA

Power Source

~

3-30 VDC

=

6-30 VAC

Alarm

+ – S

Energy Output

The solid state pulse outputs are rated for 30 VAC/DC nom.

Maximum load current is 100 mA at 25°C. Derate 0.56 mA per °C above 25°C.

* While the relay used for the Phase Loss contact is Normally Closed (contacts are closed when the meter is not powered), closure indicates the presence of an alarm; either loss of phase, when the meter is powered, or loss of power when the meter is not. The contacts are open when the meter is powered and no phase loss alarm conditions are present.

** The over-current protective device must be rated for the short circuit current at the connection point.

14

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UI MENU ABBREVIATIONS DEFINED

UI Menu Abbreviations Defined

The user can set the display mode to IEC or IEEE notation in the SETUP menu.

Table 6 IEC and IEEE Abbreviations

Main Menu

IEC IEEE Description

D D Demand

MAX M Maximum Demand

P W Present Real Power

Q VA R Present Reactive Power

S VA Present Apparent Power

A A Amps

UAB, UBC, UAC

V VLN Voltage Line-to-Neutral

PF PF Power Factor

U VLL Voltage Line-to-Line

HZ HZ Frequency

KSh KVAh Accumulated Apparent Energy

KQh KVARh Accumulated Reactive Energy

KPh KWh Accumulated Real Energy

PLOSS PLOSS Phase Loss

LOWPF LOWPF Low Power Factor Error

F ERR F ERR Frequency Error

I OVR I OVR Over Current

V OVR V OVR Over Voltage

PULSE PULSE kWh Pulse Output Overrun (conguration error)

_PHASE _PHASE Summary Data for 1, 2, or 3 active phases

ALERT ALERT Diagnostic Alert Status

INFO INFO Unit Information

MODEL MODEL Model Number

OS OS Operating System

RS RS Reset System

SN SN Serial Number

RESET RESET Reset Data

PASWD PASWD Enter Reset or Setup Password

ENERG ENERG Reset Energy Accumulators

DEMND DEMND Reset Demand Maximums





PULS_ PULS_ Pulse Counter (if equipped)

VAB, VBC, VAC

Voltage Line-to-Line

Import

Export

EM3555

15

EM3555 User Interface for Data Configuration

USER INTERFACE FOR DATA CONFIGURATION

_PHAS

HZ

DEMND

CPHAS

BPHAS

APHAS

Frequency

ZL0093-0A

11/2011

ENRGY

(Export Wh)

PULS2

Pulse Counter 2

for Pulse Value

PULS1

See SETUP > SPULS > Wh/P

(Import Wh)

Pulse Counter 1

KVAh

Export

Apparent Energy

Power (S)

M KVA

Export Demand

Maximum Apparent

Power (Q)

MKVAR

Export Demand

Maximum Reactive

Power (P)

M KW

Maximum Real

Export Demand

Power (S)

M KVA

Import Demand

Maximum Apparent

MKVAR

Power (Q)

Import Demand

Maximum Reactive

M KW

IEEE Display Mode

Power (P)

Import Demand

Maximum Real

Present

D KVA

Demand (S)

Apparent Power

C -KWh

C +KWh

C PF

C KVA

CKVAR

C KW

C VLN

B -KWh

B +KWh

B PF

B KVA

BKVAR

B KWB VLN

A -KWh

A +KWh

A PF

A KVA

AKVAR

A KW

A VLN

3 -KWh

Total Export

Total Import

3 +KWh

3 PF

Power Factor

3 KVA

Total Apparent

3KVAR

Total Reactive

3 KW

Total Real

3 VLN

Volts Line-Neutral (V)

Real Energy

(Average of

Active Phases)

Power (S)

Power (Q)

>>> Scroll When Idle >>>

Power (P)

Phases)

(Average of Active

Import

KVAh

Apparent Energy

KVAh

Signed Net

Apparent Energy

Energy

KVAR4

Quadrant 4

Export Reactive

Energy

KVAR3

Quadrant 3

Export Reactive

Energy

KVAR2

Quadrant 2

Import Reactive

Energy

KVAR1

Quadrant 1

Import Reactive

Export

3 -KWh

Real Energy

To:

Present

Demand (Q)

DKVAR

Reactive Power

Present

Real Power

Demand (P)

D KW

SETUP

DEMND

Demand

Phase C:

C VAC

C A

CPHAS

3 Phase

B VBC

B A

BPHAS

Phase B:

2 & 3 Phase

Systems Only

A VAB

A A

APHAS

Phase A:

Systems Only

3 VLL

Phases)

(Average of Active

Volts Line-Line (U)

3 A

Amps (A)

(Average of

Active Phases)

_PHAS

All Systems

Summary Data

1, 2, or 3 Phase

16

Energy

Import

3 +KWh

3 KWh

Signed Net

ENRGY

and Counters

Accumulators

Real Energy

To:

ALERT

ZL0093-0A 11/2011

User Interface for Data Configuration

EM3555

ENRGY

(Export Ph)

PULS2

Pulse Counter 2

for Pulse Value

PULS1

See SETUP > SPULS > Wh/P

(Import Ph)

_PHAS

HZ

DEMND

CPHAS

BPHAS

APHAS

Frequency

Pulse Counter 1

Export

E KSh

Apparent Energy

IEC Display Mode

Power (S)

M KS

Export Demand

Maximum Apparent

Power (Q)

M KQ

Export Demand

Maximum Reactive

Demand

M KP

Power Export

Maximum Real

Power

M KS

Import Demand

Maximum Apparent

Power

M KQ

Import Demand

Maximum Reactive

Demand

M KP

Power Import

Maximum Real

Present

Demand

D KS

Apparent Power

C -KPh

C +KPh

C PF

C KS

C KQ

C KPC V

B -KPh

B +KPh

B PF

B KS

B KQ

B KP

B V

A -KPh

A +KPh

A PF

A KS

A KQ

A KP

A V

3 -KPh

Total Export

Total Import

3 +KPh

3 PF

(Average of

Power Factor

3 KS

Total Apparent

3 KQ

Total Reactive

3 KP

Total Real

3 V

Volts Line-Neutral (V)

Real Energy

Active Phases)

Power (S)

Power (Q)

>>> Scroll When Idle >>>

Power (P)

Phases)

(Average of Active

Import

E KSh

Apparent Energy

E KSh

Signed Net

Apparent Energy

Energy

Q4 Qh

Quadrant 4

Export Reactive

Energy

Q3 Qh

Quadrant 3

Export Reactive

Energy

Q2 Qh

Quadrant 2

Import Reactive

Energy

Q1 Qh

Quadrant 1

Import Reactive

Export

E -KPh

Real Energy

Volts CA

Present

Demand

D KQ

Reactive Power

Present

Demand

Real Power

D KP

To:

SETUP

DEMND

Demand

C U

C A

CPHAS

3 Phase

Phase C:

Systems Only

Phase B:

Volts BC

B U

B A

BPHAS

2 & 3 Phase

Systems Only

A U

A A

APHAS

Phase A:

All Systems

Volts AB

3 U

3 A

_PHAS

Phases)

(Average of Active

Volts Line-Line (U)

Amps (A)

(Average of

Active Phases)

Import

E +KPh

Real Energy

E KPh

Signed Net

Real Energy

To:

ENRGY

ALERT

Energy

and Counters

1, 2, or 3 Phase

Summary Data

Accumulators

17

EM3555 Alert/Reset Information

ALERT/RESET INFORMATION

To: ENRGY

ZL0093-0A

11/2011

Alert Status

(check if

Wrench on

LCD)

Unit

Information

Reset

Data

Setup Meter

ALERT

INFO

RESET

SETUP

PLOSS

-------A b C

Phase Loss

A B C

LOWPF

-------A b C

Low Power Factor

A B C

F ERR

-------A

Frequency Out

of Range

A

Display “nOnE” if no alerts

MODEL OS SNRS

Model

Number

Operating

System

Reset

System

Back

PASWD

--------

0

0000

Enter Reset

Password

ENERG

--------

rES

Reset Energy

Accumulators to 0

Reset Demand

Maximums to Present

PASWD

--------

0

0000

Enter Setup

Password

DEMND

--------

rES

I OVR

-------A b C

Over Current

(Clipping)

A B C

Serial

Number

COUNT

rES

Reset Pulse

Counters to 0

--------

V OVR

-------A b C

Over Voltage

(Clipping)

A B C

INFO

RESET

To Setup

PULSE

------- Error

Energy Pulse Output: Error = Overrun Error

ConF = Configuration Error

ALERT

PASWD – Enter the Reset Password (configured in the setup menu). ENERG – Reset all Energy Accumulators (Wh, VARh, VAh) to 0. Press “+” or “-“ to Reset. DEMND – Reset all Maximum Demand (W, VAR, VA) to the present Demand. Hit “+” or “-“ to Reset. COUNT – Reset the pulse counters. Press “+” or “-“ to Reset.

To: DEMND

18

ZL0093-0A 11/2011

USER INTERFACE FOR SETUP

To Setup p. 2 “SPASS”

Back S COM

From:

SETUP > PASWD

RS-485

Output

ADDR

--------

0

01

BAUD

-------38400

19200

9600 4800 2400 1200

-------nOnE

EvEn

Odd

User Interface for Setup

EM3555

Set Communications Parameters: ADDR - Modbus Address: 1 – 247.

Press + to increment the selected (blinking) digit. Press - to select the digit to the left.

BAUD - Baud Rate: 1200 – 38400 Baud PAR - Parity: Odd, Even, None

Press + or - to step through the options.

Transformer

Back To SETUP

Back

Current

Back

System

Type

Back

Potential

Transformer

Back

Sytem

Voltage

S CT

S SYS

S PT

S V

CT V

--------

1.0

.33

SYSTM

--------

3L-1n

3L 2L-1n 2L 1L-1n

RATIO

--------

001

V LL

--------

0

0600

CT SZ

--------

00

1

System 3L-1n 40 3 Wye Three Phase: A, B, & C with Neutral (Default). 3L 31 3 Delta Three Phase: A, B & C; no Neutral 2L-1n 12 2 Single Split Phase: A & B with Neutral 2L 11 1 Single Phase: A & B; no Neutral 1L-1n 10 1 Single Phase: A to Neutral

Set Potential Transfomer Ratio: RATIO – Potential transformer step down is RATIO:1. Default is 1:1

(No PT installed). See Install for wiring diagrams. This value must be set before the System Voltage (if used).

Set System Voltage: V LL – The nominal Line to Line Voltage for the system. This is used

by the meter to calculate the theoretical maximum system power, and as the reference voltage for setting the Phase Loss threshold. Maximum is 32000 Volts. For system type 1+N (10), this is a Line to Neutral Voltage, indicated by “V LN”. Note: the meter will reject settings that are not within the meter’s operating range when divided by the PT ratio.

Set Current Transducer: CT V - CT Input Voltage: + or – to Select 1.0 or 0.33V. CT SZ - CT Size: in Amps. Maximum is 32000 Amps.

Reg 130 CTs Description

Back

S PWR

Sytem

Voltage

To Setup p. 2 “SPLOS”

MX KW

--------

103.92

meter from the System Voltage, CT size, and System Type. Power Factor is assumed to be unity. The value of System Power is used to determine which combinations of pulse weight and duration are valid and will keep up with the maximum power the meter will see. This value is read only.

Note: Bold is the Default.

19

EM3555 User Interface for Setup

ZL0093-0A

11/2011

To Setup p. 1 “S PWR”

mS/P

-------500 250 100

50 25 10

--------

0.2

--------

0

0900

Max PPS

--------

10 20 50

VOLTS

Back

Back To SETUP

Back

SPLOS

Phase

Loss

SPULS

Pulse

Output

SDMND

Demand

--------

0.1

Wh/P

-------10000

1000

100

10

INTRV

--------

0

6 5 4 3 2

1

Set Phase Loss: VOLTS - Phase Loss Voltage: The fraction of the system

voltage below which Phase Loss Alarm is on. For system types with neutral, the Line to Neutral voltage is also calculated and tested. If the System Voltage is 600 and the fraction is set to 0.10, then the Phase Loss threshold will be 60 volts. IMBAL - Phase Loss Imbalance: The fractional difference in Line to Line voltages above which Phase Loss Alarm is on. For system types with neutral, the Line to Neutral voltages are also tested. For system types 1+N (10) and 2 (11) , imbalance is not tested.

Set Pulse:

The System Type , CT size, PT Ratio, and System Voltage must all be configured before setting the Pulse Energy. If any of these parameters are changed, the meter will hunt for a new Pulse Duration, but will not change the Pulse Energy. If it cannot find a solution, the meter will display the wrench, show “ConF” in the ALARM -> PULSE screen, and enable Energy pulse output configuration error bit in the Modbus Diagnostic Alert Bitmap (if

1

equipped).

2

Wh/P - Set Pulse Energy: In Watt Hours (& VAR Hours, if

5

present) per Pulse. When moving down to a smaller energy, the meter will not allow the selection if it cannot find a pulse duration that will allow the pulse output to keep up with Theoretical Maximum System Power (see S_PWR screen). When moving up to a larger energy, the meter will jump to the first value where it can find a valid solution. mS/P – Minimum Pulse Duration Time: This read only value is set by the meter to the slowest duration (in mS per closure) that will keep up with the Theoretical Maximum System Power. The open time is greater than or equal to the closure time. The maximum Pulses Per Second (PPS) is shown in yellow.

Set Demand Interval: INTRV - The number of Sub-Intervals (1 to 6) in a Demand Interval.

Default is 1 (block demand). SEC - Sub-Interval length in seconds. Default is 900 (15 minutes). Set to 0 for external sync-to-comms (Modbus units only).

Back

Passwords

To Setup page 1 “S COM”

S DIS

Display

Units

SPASS

Setup

20

UNITS

--------

IEEE

IEC

--------

0

0000

RESET

--------

0

0000

IEEE – VLL VLN W VAR VA Units. IEC - U V P Q S Units.

Set Passwords: SETUP - The Password to enter the SETUP menu. RESET - The Password to enter the RESET menu.

ZL0093-0A 11/2011

RS-485 COMMUNICATIONS

Daisy-chaining Devices to the Power Meter

RS-485 Communications

The RS-485 slave port allows the power meter to be connected in a daisy chain with up to 63 2-wire devices. In this bulletin, communications link refers to a chain of devices that are connected by a communications cable.

Figure 7 Daisy-chaining multiple devices

Belden 1120 A or equivalent (600 V)

120 Ω terminator

on the rst and

last device of the

daisy chain

EM3555

+

–

S

Shield wire

• The terminal’s voltage and current ratings are compliant with the

requirements of the EIA RS-485 communications standard.

• The RS-485 transceivers are ¼ unit load or less.

• RS-485+ has a 47 kΩ pull up to +5V, and RS-485- has a 47 kΩ pull

down to Shield (RS-485 signal ground).

• Wire the RS-485 bus as a daisy chain from device to device, without any stubs. Use 120 Ω termination resistors at each end of the bus (not

included).

• Shield is not internally connected to Earth Ground.

• Connect Shield to Earth Ground somewhere on the RS-485 bus.

• Use 14-24 gauge wire for all connections.

• When tightening terminals, ensure that the correct torque is applied:

3.5 - 4.4 in·lb (0.4-0.5 N·m).

Figure 8 Torque requirements

3.5–4.4 in•lb

(0.4–0.5 N•m)

+

–

S

Use 14-24 gauge wire

Red

Black

Gray

21

EM3555 Data Logging

DATA LO GGIN G

Configuration

ZL0093-0A

11/2011

The EM3555 includes a data logging feature that records 10 meter parameters, each in its own buffer.

Use register 150 to set the data logging time subinterval. Writing to the storage buffer is triggered by the subinterval timer. The default subinterval is 15 minutes (at a 15 minute interval setting, the buffers hold 60 days of data). An external timer can be used over Modbus by setting this register to 0.

Use register 159 to turn on data logging and select either Single Shot or Continuous mode. The default settings are data logging on and set to Continuous mode. In Single Shot mode, the meter records data until the buffer is full. When the buffer is full, the meter stops recording new readings. Data for this time period is kept, but newer energy information is lost. In Continuous mode, the meter continues to record energy data as long as the meter is operating. The buffer can only hold 5760 entries at one time, however, so when the number of records exceeds 5760, the oldest entry is deleted to make room for the newest.

Registers 169-178 contain the pointers to 10 data storage buffers. Each buffer

is user-congurable with the Modbus address of the 16-bit data output to be stored. Measurement variables with 32-bit data, such as oating point data or

32-bit integer energy accumulators, require two buffers. However, the lower 16 bits of an integer energy accumulator can be stored in a single buffer (optional).

Reading Data

Read/Write Collision

When the EM3555 is rst installed, the buffers contain QNAN data, with a value

of 0x8000. This data is considered invalid. If the buffer is reset at any point, all entries in the buffers are overwritten with this 0x8000 value, indicating that it is

invalid. All invalid data is overwritten as the meter lls the buffer with new data

entries.

Use register 158 to choose which buffer to read. When this register value is set to 0, the meter is in data logging mode. Changing this value from 0 (to 1 through

10) switches the meter to reading mode and selects a buffer to read. Data from the selected buffer appears in registers 8000 to 13760.

If the demand sub-interval timeout occurs while the user is reading a page

(register 158 ≠ 0), the log data will be held in RAM until the next demand

subinterval. At that time, both the saved data from the previous cycle and the new data will be written to the log, whether the page register has been set back to 0 or not. Error bits in the Log Status Register (160) track these conditions. Subsequent log writes will proceed normally. Provided the log read is concluded in less time than the demand sub-interval, this mechanism handles the occasional collision and prevents the user from reading data as the buffer is being updated.

The Log Status Register has additional error ag bits that indicate whether

logging has been reset or interrupted (power cycle, etc.) during the previous demand sub-interval, and whether the Real Time Clock has been changed

(re-initialized to default date/time due to a power-cycle or modied via Modbus

commands).

22

ZL0093-0A 11/2011

STANDARD MODBUS DEFAULT SETTINGS

Table 7 Modbus Default Settings

Setup Password 00000 –

Reset Password 00000 –

System Type 40 (3 + N) Wye 130

CT Primary Ratio (if CTs are not included)

CT Secondary Ratio 0.33 V 132

PT Ratio 1:1 (none) 133

System Voltage 600 V L-L 134

Max. Theoretical Power (Analog Output: full scale (20mA or 5V))

Display Mode 1 (IEEE) 137

Phase Loss 10% of System Voltage (60V), 25%

Pulse Energy 1 (kWh/pulse) 144

Demand: number of sub-intervals per interval

Demand: sub-interval length

Modbus Address 001 –

Modbus Baud Rate 19200 baud –

Modbus Parity Even –

Log Read Page 0 158

Logging Conguration

Register

Log Register Pointer 1 1 (Real Energy MSR) 169

Log Register Pointer 2 2 (Real Energy LSR) 170

Log Register Pointer 3 29 (Reactive Energy MSR) 171

Log Register Pointer 4 30 (Reactive Energy LSR) 172

Log Register Pointer 5 37 (Real Demand) 173

Log Register Pointer 6 38 (Reactive Demand) 174

Log Register Pointer 7 39 (Apparent Demand) 175

Log Register Pointer 8 155 (Month/Day) 176

Log Register Pointer 9 156 (Year/Hour) 177

Log Register Pointer 10 157 (Minutes/Seconds) 178

Standard Modbus Default Settings

EM3555

Setting Value Modbus

Register

100 A 131

104 kW 135

142, 143

Phase to Phase Imbalance

1 (block mode) 149

900 sec (15 min) 150

0 159

23

EM3555 Modbus Point Map

MODBUS POINT MAP

Supported Modbus Commands

ZL0093-0A

11/2011

The EM3555 Full Data Set (FDS) features data outputs such as demand calculations, per phase signed watts VA and VAR, import/export Wh and VAh, and VARh accumulators by quadrant. The Data Logging function adds log

conguration registers 155-178 and log buffer reading at registers 8000-13760.

The meter supports variable CTs and PTs, allowing a much wider range of operation from 90V x 5A up to 32000V x 32000A. To promote this, the meter permits variable scaling of the 16-bit integer registers via the scale registers.

The 32-bit oating point registers do not need to be scaled.

Integer registers begin at 001 (0x001). Floats at 257 (0x101). Conguration

registers at 129 (0x081). Values not supported in a particular System Type

conguration will report QNAN (0x8000 in Integer Registers, 0x7FC00000 in

Floating Point Registers). Register addresses are in PLC style base 1 notation. Subtract 1 from all addresses for the base 0 value used on the Modbus RS-485 link.

Note: ID String information varies from model to model. Text shown here is an example.

Table 8 Supported Commands

Command Description

0x03 Read Holding Registers

0x04 Read Input Registers

0x06 Preset Single Register

0x10 Preset Multiple Registers

Report ID

Return string: byte0: address byte1: 0x11

0x11

0x2B

byte2: #bytes following w/out crc byte3: ID byte = 247 byte4: status = 0xFF if the operating system is used; status = 0x00 if the reset system is used bytes5+: ID string = “Schneider Electric EM3555 Power Meter Full Data Set” or “Schneider Electric EM3555 Power Meter RESET SYSTEM RUNNING RS Version x.xxx” last 2 bytes: CRC

Read Device Identication, BASIC implementation (0x00, 0x01

and 0x02 data), Conformity Level 1.

Object values: 0x01: “Schneider Electric EM” 0x02: “3555” 0x03: “Vxx.yyy”, where xx.yyy is the OS version number (reformatted version of the Modbus register #7001, (Firmware Version, Operating System). If register #7001 == 12345, then the 0x03 data would be “V12.345”).

24

ZL0093-0A 11/2011

Legend

Modbus Point Map

EM3555

The following table lists the addresses assigned to each data point. For oating

point format variables, each data point appears twice because two 16-bit

addresses are required to hold a 32-bit oat value. Negative signed integers are

2’s complement.

R/W

NV

Format

Units Lists the physical units that a register holds.

Scale Factor

Range Denes the limit of the values that a register can contain.

R=read only

R/W=read from either integer or oat formats, write only to integer

format.

Value is stored in non-volatile memory. The value will still be available if the meter experiences a power loss and reset.

UInt Unsigned 16-bit integer.

SInt Signed 16-bit integer.

ULong Unsigned 32-bit integer; Upper 16-bits (MSR) in lowest

numbered / rst listed register (001/002 = MSR/LSR).

SLong Signed 32-bit integer; Upper 16-bits (MSR) in lowest

numbered / rst listed register (001/002 = MSR/LSR).

Float 32-bit oating point; Upper 16-bits (MSR) in lowest numbered

/ rst listed register (257/258 = MSR/LSR). Encoding is per

IEEE standard 754 single precision.

Some Integer values must be multiplied by a constant scale factor (typically a fraction), to be read correctly. This is done to allow integer numbers to represent fractional numbers.

SunSpec Alliance Interoperability Specification Compliance

This meter implements the draft SunSpec 1.0 common elements starting at base 1 address 40001, and the proposed SunSpec 1.1 meter model at 40070 (these addresses are not in Modicon notation). See www.sunspec.org for copies

of these specications.

25

EM3555 Modbus Point Map

ZL0093-0A

11/2011

R/W

NV

Format

Units

Scale

Range

Description

REGISTER

Integer Data: Summary of Active Phases

001

R NV SLong kWh E

002 LSR

003

R NV ULong kWh E

004 LSR

005

R NV ULong kWh E

006 LSR

007

R NV ULong kVARh E

008 LSR

009

R NV ULong kVARh E

010 LSR

011

R NV ULong kVARh E

012 LSR

013

R NV ULong kVARh E

014 LSR

015

R NV SLong kVAh E

016 LSR

017

R NV ULong kVAh E

018 LSR

019

R NV ULong kVAh E

020 LSR

021 R SInt kW W

-2147483647 to +2147483647

0 to 0xFFFFFFFF

-2147483647 to +2147483647

0 to 0xFFFFFFFF

-32767 to +32767

Real Energy: Net (Import - Export)

Real Energy: Quadrants 1 & 4

Import

Real Energy: Quadrants 2 & 3

Export

Reactive Energy - Quadrant 1: Lags Import Real Energy (IEC) Inductive (IEEE)

Reactive Energy - Quadrant 2: Leads Export Real Energy (IEC) Inductive (IEEE)

Reactive Energy - Quadrant 3: Lags Export Real Energy (IEC) Capacitive (IEEE)

Reactive Energy - Quadrant 4: Leads Import Real Energy (IEC) Capacitive (IEEE)

Apparent Energy: Net (Import - Export)

Apparent: Quadrants 1 & 4

Import

Apparent: Quadrants 2 & 3

Export

Total Instantaneous Real (P) Power

MSR

Accumulated Real Energy (Ph)

Accumulated Reactive Energy (Qh): Quadrants 1 + 2 = Import Quadrants 3 + 4 = Export

Accumulated Apparent Energy (Sh): Import and Export correspond with Real Energy

Clear via reset register 129

022 R SInt kVAR W 0 to 32767 Total Instantaneous Reactive (Q) Power

023 R UInt k VA W 0 to 32767 Total Instantaneous Apparent (S) Power (vector sum)

024 R SInt Ratio 0.0001

025 R UInt Volt V 0 to 32767 Voltage, L-L (U), average of active phases

026 R UInt Volt V 0 to 32767 Voltage, L-N (V), average of active phases

027 R UInt Amp I 0 to 32767 Current, average of active phases

028 UInt Hz 0.01 4500 to 6500 Frequency

029 R SInt kW W

030 SInt kVAR W

031 R SInt kVA W

-10000 to +10000

-32767 to +32767

Total Power Factor (total kW / total kVA)

Total Real Power Present Demand

Total Reactive Power Present Demand

Total Apparent Power Present Demand

26

ZL0093-0A 11/2011

Modbus Point Map

EM3555

NV

R/W

Format

Units

Scale

Range

REGISTER

032 R NV SInt kW W

033 R NV SInt kVAR W

034 R NV SInt kVA W

035 R NV SInt kW W

037 R NV SInt kVA W

038 R UInt Reserved (returns 0x8000 - QNAN)

039

040 LSR

041

042 LSR

043

044 LSR

045

046 LSR

047

048 LSR

049

050 LSR

051

052 LSR

053

054

R NV ULong

R NV ULong kWh E

-32767 to +32767

0 to 0xFFFFFFFF

Total Real Power Max. Demand

Total Reactive Power Max. Demand

Total Apparent Power Max. Demand

Total Real Power Max. Demand

Total Reactive Power Max. Demand

Total Apparent Power Max. Demand

Pulse Counter 1 (Import Real Energy)

Pulse Counter 2 (Export Real Energy)

Accumulated Real Energy, Phase A

Accumulated Real Energy, Phase B

Accumulated Real Energy, Phase C

Accumulated Real Energy, Phase A

Accumulated Real Energy, Phase B

Accumulated Real Energy, Phase C

MSR

LSR

Description

Import

Reset via register 129

Export036 R NV SInt kVAR W

Contact Closure Counters. Valid for both pulse inputs and outputs. EM3555 counts are shown in parentheses. See register 144 - Energy Per Pulse for the Wh per pulse count.

Import

Accumulated Real Energy (Ph), per phase

Export

27

EM3555 Modbus Point Map

ZL0093-0A

11/2011

REGISTER

055

056

057

058

059

060

061

062

063

064

065

066

067

068

069

070

071

072

073

074

075

076

077

078

NV

R/W

R NV ULong kVARh E

Format

Units

Scale

0 to 0xFFFFFFFF

Range

Accumulated Q1 Reactive Energy, Phase A

Accumulated Q1 Reactive Energy, Phase B

Accumulated Q1 Reactive Energy, Phase C

Accumulated Q2 Reactive Energy, Phase A

Accumulated Q2 Reactive Energy, Phase B

Accumulated Q2 Reactive Energy, Phase C

Accumulated Q3 Reactive Energy, Phase A

Accumulated Q3 Reactive Energy, Phase B

Accumulated Q3 Reactive Energy, Phase C

Accumulated Q4 Reactive Energy, Phase A

Accumulated Q4 Reactive Energy, Phase B

Accumulated Q4 Reactive Energy, Phase C

MSR

LSR

MSR

LSR

MSR

LSR

MSR

LSR

MSR

LSR

MSR

LSR

MSR

LSR

MSR

LSR

MSR

LSR

MSR

LSR

MSR

LSR

MSR

LSR

Description

Import

Accumulated Reactive Energy (Qh), Per Phase

Export

28

ZL0093-0A 11/2011

Modbus Point Map

EM3555

NV

R/W

Format

Units

Scale

Range

REGISTER

079

080 LSR

081

082 LSR

083

084 LSR

085

086 LSR

087

088 LSR

089

090 LSR

091 R SInt kW W

093 R SInt kW W

094 R SInt kVAR W

096 R SInt kVAR W

R NV ULong kVAh E

0 to 0xFFFFFFFF

-32767 to +32767

Accumulated Apparent Energy, Phase A

Accumulated Apparent Energy, Phase B

Accumulated Apparent Energy, Phase C

Accumulated Apparent Energy, Phase A

Accumulated Apparent Energy, Phase B

Accumulated Apparent Energy, Phase C

Real Power (P), Phase A

Real Power (P), Phase B

Real Power (P), Phase C

Reactive Power (Q), Phase A

Reactive Power (Q), Phase B

Reactive Power (Q), Phase C

MSR

Description

Import

Accumulated Apparent Energy (Sh), Per Phase

Export

Real Power (P)092 R SInt kW W

Reactive Power (Q)095 R SInt kVAR W

097 R UInt k VA W 0 to 32767 Apparent Power (S), Phase A

099 R UInt k VA W 0 to 32767 Apparent Power (S), Phase C

100 R SInt Ratio 0.0001

102 R SInt Ratio 0.0001

103 R UInt Volt V 0 to 32767 Voltage (U), Phase A-B

105 R UInt Volt V 0 to 32767 Voltage (U), Phase A-C

106 R UInt Volt V 0 to 32767 Voltage (V), Phase A-N

108 R UInt Volt V 0 to 32767 Voltage (V), Phase C-N

109 R UInt Amp I 0 to 32767 Current, Phase A

111 R UInt Amp I 0 to 32767 Current, Phase C

112 R UInt Reserved (returns 0x8000 - QNAN)

-10000 to +10000

Power Factor (PF), Phase A

Power Factor (PF), Phase B

Power Factor (PF), Phase C

Apparent Power (S)098 R UInt k VA W 0 to 32767 Apparent Power (S), Phase B

Power Factor (PF)101 R SInt Ratio 0.0001

Line-to-Line voltage (U)104 R UInt Volt V 0 to 32767 Voltage (U), Phase B-C

Line-to-Neutral voltage (V)107 R UInt Volt V 0 to 32767 Voltage (V), Phase B-N

Current110 R UInt Amp I 0 to 32767 Current, Phase B

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REGISTER

Reset:

- Write 30078 (0x757E) to clear all energy accumulators to 0 (all).

- Write 21211 (0x52DB) to begin new demand sub-interval calculation cycle. Takes effect at the end of

129 R/W UInt N/A

10,

130 R/W NV UInt

131 R/W NV UInt Amps 1-32000 CT Ratio – Primary

132 R/W NV UInt 1, 3

133 R/W NV UInt 100 0.01-320.00

134 R/W NV UInt 82-32000

135 R NV UInt kW W 1-32767

136 R UInt Reserved (returns 0)

11, 12, 31, 40

the next 1 second calculation cycle. Write no more frequently than every 10 seconds.

- Write 21212 (0x52DC) to reset max. demand values to present demand values. Takes effect at the end of the next 1 second calculation cycle. Write no more frequently than every 10 seconds.

- Write 16640 (0x4100) to reset logging.

- Write 16498 (0x4072) to clear pulse counts to zero.

- Read (returns 0). Single Phase: A + N

Single Phase: A + B

Single Split Phase: A + B + N

3 phase ∆, A + B + C, no N

3 phase Y, A + B + C + N

CT Ratio – Secondary Interface (1 or 1/3 V, may not be user

congurable)

PT Ratio: The meter scales this value by 100 (i.e. entering 200 yields a potential transformer ratio of 2:1). The default is 100 (1.00:1), which is with no PT attached. Set this value before setting the system voltage (below).

System Voltage: This voltage is line to line, unless in system type 10 (register 130), which is line to

neutral. The meter uses this value to calculate the full scale power for the pulse conguration (below),

and as full scale for phase loss (register 142). The meter will refuse voltages that are outside the range of 82-660 volts when divided by the PT Ratio (above).

Theoretical Maximum System Power – This read only register is the theoretical maximum power the meter expects to see on a service. It is calculated by the meter from the system type (register 130), CT size (register 131), and system voltage (register 134) and is updated whenever the user changes any of these parameters. It is used to determine the maximum power the pulse outputs can keep up with. This integer register has the same scale as other integer power registers (see register 140 for power scaling).

Description

System Type (Note: only the indicated phases are monitored for phase loss)

Current inputs

137 R/W NV UInt 0,1 Display Units: 0 = IEC (U, V, P, Q, S), 1 = IEEE (default: VLL, VLN, W, VAR, VA)

138 R SInt

139 R SInt Scale Factor V (Voltage)

140 R SInt Scale Factor W (Power)

141 R SInt Scale Factor E (Energy)

-4 0.0001

-3 0.001

-2 0.01

-1 0.1 0 1.0 1 10.0 2 100.0 3 1000.0 4 10000.0

Scale Factor I (Current)

30

Scale Factors

Note: These registers contain a signed integer, which scales the corresponding integer registers. Floating point registers are not scaled. Scaling is recalculated when the meter

conguration is changed.

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Range

REGISTER

Phase Loss Voltage Threshold in percent of system voltage (register 134). Default value is 10 (%). Any

phase (as congured in register 130) whose level

drops below this threshold triggers a phase loss alert,

142 R/W NV UInt % 1-99

143 R/W NV UInt % 1-99

10000,

144 R/W NV UInt Wh

145 R NV UInt msec

146 R UInt

147 R NV UInt 0-32767 Count of Energy Accumulator resets

1000, 100, 10

500, 250, 100, 50, 25, 10

i.e., if the system voltage is set to 480 V L-L, the L-N voltage for each phase should be 277 V. When the threshold is set to 10%, if any phase drops more than 10% below 277 V, (less than 249 V), or if any L-L voltage drops more than 10% below 480 V (less than 432 V) the corresponding phase loss alarm bit in register 146 will be true.

Phase Loss Imbalance Threshold in Percent. Default is 25% phase to phase difference. For a 3-phase Y (3 + N) system type (40 in register 130), both line-to-neutral and line-to-line voltages are tested. In a 3-phase system type (31 in register 130), only line-to-line voltages are examined. In a single split-phase (2 + N) system type (12 in register 130), just the line-to-neutral voltage are compared.

Wh (& VARh, if equipped)

Energy per Pulse Output Contact Closure. If the meter

cannot nd a pulse duration

that will keep up with the max. system power (register

135), it will reject the new value. Check the meter

conguration and/or try a

larger value.

Pulse Contact Closure Duration in msec. Read-only. Set to the slowest duration that will keep up with the theoretical max. system power (register 135). The

open time ≥ the closure

time, so the max. pulse rate (pulses per sec) is the inverse of double the pulse time.

Error Bitmap. 1 = Active: Bit 0: Phase A Voltage out of range Bit 1: Phase B Voltage out of range Bit 2: Phase C Voltage out of range Bit 3: Phase A Current out of range Bit 4: Phase B Current out of range Bit 5: Phase C Current out of range

Bit 6: Frequency out of the range of 45 to 65 Hz -OR- insufcient voltage to determine frequency.

Bit 7: Reserved for future use Bit 8: Phase Loss A Bit 9: Phase Loss B Bit 10: Phase Loss C Bit 11: Low Power Factor on A with one or more phases having a PF less than 0.5 due to mis-wiring of phases Bit 12: Low Power Factor on B Bit 13: Low Power Factor on C Bit 14: Energy pulse output overrun error. The pulse outputs are unable to keep up with the total real

power (registers 3 and 261/262). To x, increase the pulse energy register (register 144) and reset the

energy accumulators (see reset register 129).

Bit 15: Energy pulse output conguration error (present pulse energy setting may not keep up with the theoretical max. system power; see register 135). To x, increase the pulse energy (register 144).

kWh (& VARh, if equipped) Pulse Contacts

Note: The kWh pulse contact can keep up with a maximum power (Watts) of 1800000 x Wh pulse weight ÷ contact closure duration (in msec).

Description

Phase Loss Output

Note: The phases tested are determined by the system type.

148 R UInt Reserved (returns 0)

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REGISTER

Number of Sub-Intervals per Demand Interval. Sets the number of sub-intervals

149 R/W NV UInt 1-6

150 R/W NV UInt Seconds 0, 10-32767

151 R/W UInt 1-32767 Reserved (returns 0)

152 R NV UInt 0-32767 Power Up Counter

153 R NV UInt 0-32767

154 R UInt Reserved (returns 0)

Logging Conguration and Status

155 R/W NV UInt

156 R/W NV UInt

157 R/W NV UInt

158 R/W NV UInt 0-10

159 R/W NV UInt

160 R NV UInt

Day / Month

Hour / Year Seconds / Minutes

See Bytes

See Bytes Hour 0-23 (0x00-0x17)

See Bytes Seconds 0-59 (0x00-0x3B)

that make a single demand interval. For block demand, set this to 1. Default is

1. When sub-interval length register #150 is set to 0 (sync-to-comms mode), this register is ignored.

Sub-Interval Length in seconds. For sync-to-comms, set this to 0 and use the reset register (129) to externally re-start the sub-interval. This is also the logging interval.

Output Conguration. EM3555 units have a N.O. energy contact and N.C. (Form B) phase loss contact,

so this register will always return a “0”.

Most Signicant Byte (MSB)

Day 1-31 (0x01-0x1F)

Logging Read Page Register. Selects which of the register logs to read (see registers 169-178). 1-10 are valid entries that put the meter into log reading mode, temporarily pausing logging. When set to 0 (no variable selected for reading), normal logging resumes. The meter will buffer one set of log entries while in reading mode if a sub-interval timeout occurs (read/write collision). Default is 0. Note: this buffered data will be written to the log, and logging will resume on the following sub-interval timeout whether the page register has been cleared or not, resulting in the appearance of data moving in the buffer during reads. To avoid this, log buffer reads should be completed and this register set back to 0 in less time than the demand sub-interval (preferred) or logging should be halted by setting Bit 1 in register 158 (logs may be missed).

Logging Conguration Register (Bit Mapped):

Bit 0: Clear to 0 for circular log buffer mode. Set to 1 for single shot logging mode. Default is 0 (Circular). Bit 1: Clear to 0 to enable Logging. Set to 1 to halt logging. Default is 0 (Log).

Logging Status Register (Bit Mapped):

Bit 0: Log buffer full – Set to 1 when one single shot mode has lled the log buffer. In this condition,

the Logged Entry Count will continue to increment. Cleared to 0 when logging is restarted (see reset command register 129). Bit 1: Log Buffer Read Collision 1 – Set to 1 if the meter tried to save log data while the user was

reading the log (Logging Page Register has been set to something other than 0). On the rst collision,

the meter holds the data until the next sub-interval and then writes the saved data to the log as well as

the data for that interval. This bit is cleared to 0 on the rst demand interval with Logging Page Register

= 0. Bit 2: Log Buffer Read Collision 2 – Set to 1 on the 2nd attempt to save log data while the user is reading the log (Logging Page Register is set to something other than 0). At this point the meter ignores

the read condition and does a double write, rst of the values saved from the previous cycle, and then

the present values. If the read condition is not removed the meter continues to write the log data as it

normally would. This bit is cleared to 0 on the rst demand interval with Logging Page Register = 0.

Bit 3: Logging Reset – The log has been reset during the previous demand sub-interval.

Bit 4: Logging Interrupted – logging has been interrupted (power cycled, log conguration change, etc.)

during the previous demand sub-interval. Bit 5: RTC Changed – The real time clock had been changed during the previous demand sub-interval. Bit 6: RTC Reset - The real time clock has been reset to the year 2000 and needs to be re-initialized.

Description

Least Signicant Byte

(LSB)

Month 1-12 (0x01-0x0C)

Year 0-199 (0x00-0xC7)

Minutes 0-59 (0x00-0x3B)

Demand Calculation

Date / Time Clock. Following a power cycle, resets to: Day 01 Month 01 Hour 00 Year (20) 00

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REGISTER

161 R NV UInt 0-32767

162 R NV UInt 0-32767

163 R NV UInt 0-32767

164

R NV ULong kWh E

165 0-0xFFFF

166 R NV UInt

167 R NV UInt

168 R NV UInt

169 R/W NV UInt

170 R/W NV UInt

171 R/W NV UInt

172 R/W NV UInt

173 R/W NV UInt

174 R/W NV UInt

175 R/W NV UInt

176 R/W NV UInt

Month / Day

Year / Hour Minutes / Seconds

0-0xFFFF

See Bytes

See Bytes Hour 0-23 (0x00-0x17)

See Bytes Seconds 0-59 (0x00-0x3B)

1-42, 146, 155-157, 257-336

Description

Range

Log Buffer Wrap / Missed Log Counter. In continuous mode, this counter increments each time the internal circular log buffer wraps and overwrites old data. The total number of logged entries since the last log reset is: (Register 161 x 5760) + Register 163. In single shot mode this counter is the number of log entries lost due to the buffer being full. The counter is cleared on logging reset.

Max Number of Logging Days. Based on the Sub-Interval Length and the depth of the log buffer, this register shows the maximum number of days that data will be logged following a reset until the Buffer is full (Single Shot Mode) or overwrites old data (Continuous).

Number of Logged Entries since the log buffer wrapped or was reset. In single shot mode, this is the total number of valid entries in the buffer. Any entries beyond this will read back as QNAN (0x8000).

Real Energy Consumption (MSR)

Real Energy Consumption (LSR)

Most Signicant Byte (MSB)

Day 1-31 (0x01-0x1F)

Log Register 1 – Default is 3 (Import Real Energy MSR)

Log Register 2 – Default is 4 (Import Real Energy LSR)

Log Register 3 – Default is 5 (Export Real Energy MSR)

Log Register 4 – Default is 6 (Export Real Energy LSR)

Log Register 5 – Default is 29 (Real Demand)

Log Register 6 – Default is 30 (Reactive Demand)

Log Register 7 – Default is 31 (Apparent Demand)

Log Register 8 – Default is 155 (Month/Day)

Real Energy (Register 001/002) starting value. Corresponds to when logging is started, reset, or rolls.

Least Signicant Byte

(LSB)

Month 1-12 (0x01-0x0C)

Year 0-199 (0x00-0xC7)

Minutes 0-59 (0x00-0x3B)

Log Register Selection – Write the number of the 16 bit register to be

logged. To log a 32 bit value (such as accumulators and oating point

values) two log registers must be used, one each for the most and least

signicant register (MSR & LSR).

Date & Time of the newest entry in the log. After a

power cycle, resets to: Day 01 Month 01 Hour 00 Year (20) 00

177 R/W NV UInt

178 R/W NV UInt

Log Register 9 – Default is 156 (Year/Hour)

Log Register 10 – Default is 157 (Minutes/ Seconds)

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Range

Description

REGISTER

Floating Point Data: Summary of Active Phases

257/258 R NV Float kWh Accumulated Real Energy: Net (Import - Export)

259/260 R NV Float kWh

261/262 R Float kWh

263/264 R Float kVARh

265/266 R Float kVARh

267/268 R Float kVARh

269/270 R Float kVARh

271/272 R NV Float kVAh Apparent Energy: Net (Import - Export)

273/274 R NV Float kVAh

275/276 R NV Float kVAh

277/278 R Float kW Total Net Instantaneous Real (P) Power

279/280 R Float kVAR Total Net Instantaneous Reactive (Q) Power

Real Energy: Quadrants 1 & 4

Import

Real Energy: Quadrants 2 & 3

Export

Reactive Energy: Quadrant 1 Lags Import Real Energy (IEC) Inductive (IEEE)

Reactive Energy: Quadrant 2 Leads Export Real Energy (IEC) Inductive (IEEE)

Reactive Energy: Quadrant 3 Lags Export Real Energy (IEC) Capacitive (IEEE)

Reactive Energy: Quadrant 4 Leads Import Real Energy (IEC) Capacitive (IEEE)

Apparent Energy: Quadrants 1 & 4

Import

Apparent Energy: Quadrants 2 & 3

Export

Accumulated Real Energy (Ph)

Accumulated Reactive Energy (Qh): Quadrants 1+2= Import Quadrants 3+4= Export

Accumulated Apparent Energy (Sh): Import and Export correspond with Real Energy

Clear via register 129

281/282 R Float k VA Total Net Instantaneous Apparent (S) Power

283/284 R Float Ratio 0.0-1.0 Total Power Factor (Total kW / Total kVA)

285/286 R Float Volt Voltage, L-L (U), average of active phases

287/288 R Float Volt Voltage, L-N (V), average of active phases

289/290 R Float Amp Current, average of active phases

291/292 R Float Hz 45.0-65.0 Frequency

293/294 R Float kW Total Real Power Present Demand

295/296 R Float kVAR Total Reactive Power Present Demand

297/298 R Float k VA Total Apparent Power Present Demand

299/300 R NV Float kW Total Real Power Max. Demand

303/304 R NV Float kVA Total Apparent Power Max. Demand

305/306 R NV Float kW Total Real Power Max. Demand

309/310 R NV Float kVA Total Apparent Power Max. Demand

311/312 R Float Reserved (reports QNAN - 0x7FC00000)

313/314 R Float 1 0-4294967040 Pulse Counter 1 (Import Real Energy)

315/316 R Float 1 0-4294967040 Pulse Counter 2 (Export Reactive Energy)

Import301/302 R NV Float kVAR Total Reactive Power Max. Demand

Export307/308 R NV Float kVAR Total Reactive Power Max. Demand

Contact closure counters. Valid for both pulse inputs and outputs. EM3555 counts are shown in parentheses. See register 144 for the weight of each pulse output count. These values are derived from the 32 bit integer counter and will roll over to 0 when the integer counters do. Inputs are user

dened.

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Range

REGISTER

Floating Point Data: Per Phase

317/318 R Float kWh Accumulated Real Energy, Phase A

319/320 R Float kWh Accumulated Real Energy, Phase B

321/322 R Float kWh Accumulated Real Energy, Phase C

323/324 R Float kWh Accumulated Real Energy, Phase A

327/328 R Float kWh Accumulated Real Energy, Phase C

329/330 R Float kVARh Accumulated Q1 Reactive Energy, Phase A

331/332 R Float kVARh Accumulated Q1 Reactive Energy, Phase B

333/334 R Float kVARh Accumulated Q1 Reactive Energy, Phase C

335/336 R Float kVARh Accumulated Q2 Reactive Energy, Phase A

339/340 R Float kVARh Accumulated Q2 Reactive Energy, Phase C

341/342 R Float kVARh Accumulated Q3 Reactive Energy, Phase A

343/344 R Float kVARh Accumulated Q3 Reactive Energy, Phase B

Description

Import

Accumulated Real Energy (Ph)

Export325/326 R Float kWh Accumulated Real Energy, Phase B

Quadrant 1

Import

Quadrant 2337/338 R Float kVARh Accumulated Q2 Reactive Energy, Phase B

Accumulated Reactive Energy (Qh)

Quadrant 3

345/346 R Float kVARh Accumulated Q3 Reactive Energy, Phase C

347/348 R Float kVARh Accumulated Q4 Reactive Energy, Phase A

351/352 R Float kVARh Accumulated Q4 Reactive Energy, Phase C

353/354 R Float kVAh Accumulated Apparent Energy, Phase A

355/356 R Float kVAh Accumulated Apparent Energy, Phase B

357/358 R Float kVAh Accumulated Apparent Energy, Phase C

359/360 R Float kVAh Accumulated Apparent Energy, Phase A

363/364 R Float kVAh Accumulated Apparent Energy, Phase C

365/366 R Float kW Real Power, Phase A

369/370 R Float kW Real Power, Phase C

371/372 R Float kVAR Reactive Power, Phase A

375/376 R Float kVAR Reactive Power, Phase C

377/378 R Float k VA Apparent Power, Phase A

Export

Quadrant 4349/350 R Float kVARh Accumulated Q4 Reactive Energy, Phase B

Import

Accumulated Apparent Energy (Sh)

Export361/362 R Float kVAh Accumulated Apparent Energy, Phase B

Real Power (P)367/368 R Float kW Real Power, Phase B

Reactive Power (Q)373/374 R Float kVAR Reactive Power, Phase B

Apparent Power (S)379/380 R Float k VA Apparent Power, Phase B

381/382 R Float k VA Apparent Power, Phase C

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REGISTER

383/384 R Float Ratio 0.0-1.0 Power Factor, Phase A

387/388 R Float Ratio 0.0-1.0 Power Factor, Phase C

389/390 R Float Volt Voltage, Phase A-B

393/394 R Float Volt Voltage, Phase A-C

395/396 R Float Volt Voltage, Phase A-N

399/400 R Float Volt Voltage, Phase C-N

401/402 R Float Amp Current, Phase A

405/406 R Float Amp Current, Phase C

407/408 R Float Reserved (reports QNAN - 0x7FC00000)

Logging Interface

8000 R NV Newest Logged Data Entry

Description

Power Factor (PF)385/386 R Float Ratio 0.0-1.0 Power Factor, Phase B

Line to Line Voltage (U)391/392 R Float Volt Voltage, Phase B-C

Line to Neutral (V)397/398 R Float Volt Voltage, Phase B-N

Current403/404 R Float Amp Current, Phase B

5760 entries total (60 days at a 15 minute sub-interval)(to) (to)

13760 R NV Oldest Logged Data Entry

Invalid or Quiet Not A Number (QNAN) conditions are indicated by 0x8000 (negative zero) for 16 bit integers and 0x7FC00000 for 32 bit oating point numbers.

Floating point numbers are encoded per the IEEE 754 32-bit specications.

36

ZL0093-0A 11/2011

SunSpec Compliant Common and Meter Model Register Blocks

SUNSPEC COMPLIANT COMMON AND METER MODEL REGISTER BLOCKS

Table 9 SunSpec Compliance Information (see www.sunspec.org for the original specifications)

EM3555

Register

R/W

NV

Format

Units

Scale

Range

SunSpec

Name

Description

SunSpec 1.0 Common Model

40001

40002

40003 R NV UInt 1 C_SunSpec_DID SunSpec common model Device ID

40004 R NV UInt 65

40005 to 40020 R NV String (32) ASCII C_Manufacturer

40021 to 40036 R NV String (32) ASCII C_Model null terminated ASCII text string = “EM3555”

40037 to 40044 R NV String (16) ASCII C_Options null terminated ASCII text string

40045 to 40052 R NV String (16) ASCII C_Version null terminated ASCII text string

40053 to 40068 R NV String (32) ASCII C_SerialNumber null terminated ASCII text string

40068 R NV UInt ASCII

R NV ULong

0x5375 6e53

C_SunSpec_ID

C_SunSpec_ Length

ASCII “SunS”. Identies this as the beginning of a

SunSpec Modbus point

Length of the common model block

null terminated ASCII text string = “Schneider Electric”

Modbus address

SunSpec 1.1 Integer Meter Model

Identication

SunSpec Integer meter model device IDs. Meter

conguration by device ID:

40070 R NV UInt 201 to 204 C_SunSpec_DID

40071 R NV UInt 105

Current

40072 R SInt Amps M_AC_Current_SF -32767 to +32767 M_AC_Current AC Current (sum of active phases)

40073 R SInt Amps M_AC_Current_SF -32767 to +32767 M_AC_Current_A Phase A AC current

40074 R SInt Amps M_AC_Current_SF -32767 to +32767 M_AC_Current_B Phase B AC current

40075 R SInt Amps M_AC_Current_SF -32767 to +32767 M_AC_Current_C Phase C AC current

40076 R NV SInt 1 M_AC_Current_CN AC Current Scale Factor

Voltage: Line to Neutral

40077 R SInt Volts M_AC_Voltage_SF -32767 to +32767 M_AC_Voltage_LN

40078 R SInt Volts M_AC_Voltage_SF -32767 to +32767 M_AC_Voltage_AN Phase A to Neutral AC Voltage

40079 R SInt Volts M_AC_Voltage_SF -32767 to +32767 M_AC_Voltage_BN Phase B to Neutral AC Voltage

40080 R SInt Volts M_AC_Voltage_SF -32767 to +32767 M_AC_Voltage_CN Phase C to Neutral AC Voltage

Voltage: Line to Line

40081 R SInt Volts M_AC_Voltage_SF -32767 to +32767 M_AC_Voltage_LL Line to Line AC voltage (average of active phases)

40082 R SInt Volts M_AC_Voltage_SF -32767 to +32767 M_AC_Voltage_AB Phase A to Phase B AC Voltage

40083 R SInt Volts M_AC_Voltage_SF -32767 to +32767 M_AC_Voltage_BC Phase B to Phase C AC Voltage

40084 R SInt Volts M_AC_Voltage_SF -32767 to +32767 M_AC_Voltage_CA Phase C to Phase A AC Voltage

40085 R NV SInt 1 M_AC_Voltage_SF AC Voltage Scale Factor

Frequency

40086 R SInt Hertz M_AC_Freq_SF -32767 to +32767 M_AC_Freq AC Frequency

40087 R NV SInt SF 1 M_AC_Freq_SF AC Frequency Scale Factor

C_SunSpec_ Length

201 = single phase (A-N or A-B) meter 202 = split single phase (A-B-N) meter 203 = Wye-connect 3-phase (ABCN) meter 204 = delta-connect 3-phase (ABC) meter

Length of the meter model block

Line to Neutral AC voltage (average of active phases)

37

EM3555 SunSpec Compliant Common and Meter Model Register Blocks

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NV

R/W

Register

40088 R SInt Watts M_AC_Power_SF -32767 to +32767 M_AC_Power Total Real Power (sum of active phases)

40089 R SInt Watts M_AC_Power_SF -32767 to +32767 M_AC_Power_A Phase A AC Real Power

40090 R SInt Watts M_AC_Power_SF -32767 to +32767 M_AC_Power_B Phase B AC Real Power

40091 R SInt Watts M_AC_Power_SF -32767 to +32767 M_AC_Power_C Phase A AC Real Power

40092 R NV SInt SF 1 M_AC_Power_SF AC Real Power Scale Factor

40093 R SInt Volt-Amps M_AC_VA_SF -32767 to +32767 M_AC_VA Total AC Apparent Power (sum of active phases)

40094 R SInt Volt-Amps M_AC_VA_SF -32767 to +32767 M_AC_VA_A Phase A AC Apparent Power

40095 R SInt Volt-Amps M_AC_VA_SF -32767 to +32767 M_AC_VA_B Phase B AC Apparent Power

40096 R SInt Volt-Amps M_AC_VA_SF -32767 to +32767 M_AC_VA_C Phase A AC Apparent Power

40097 R NV SInt SF 1 M_AC_VA_SF AC Apparent Power Scale Factor

40098 R SInt VA R M_AC_VAR_SF -32767 to +32767 M_AC_VAR Total AC Reactive Power (sum of active phases)

40099 R SInt VA R M_AC_VAR_SF -32767 to +32767 M_AC_VAR_A Phase A AC Reactive Power

40100 R SInt VA R M_AC_VAR_SF -32767 to +32767 M_AC_VAR_B Phase B AC Reactive Power

40101 R SInt VA R M_AC_VAR_SF -32767 to +32767 M_AC_VAR_C Phase A AC Reactive Power

40102 R NV SInt SF 1 M_AC_VAR_SF AC Reactive Power Scale Factor

40103 R SInt % M_AC_PF_SF -32767 to +32767 M_AC_PF Average Power Factor (average of active phases)

40104 R SInt % M_AC_PF_SF -32767 to +32767 M_AC_PF_A Phase A Power Factor

40105 R SInt % M_AC_PF_SF -32767 to +32767 M_AC_PF_B Phase B Power Factor

40106 R SInt % M_AC_PF_SF -32767 to +32767 M_AC_PF_C Phase A Power Factor

40107 R NV SInt SF 1 M_AC_PF_SF AC Power Factor Scale Factor

40108

40109

40110

40 111

40112

40113

40114

40115

40116

40117

40118

40119

40120

40121

40122

40123

40124 R NV SF SF 1 M_Energy_W_SF Real Energy Scale Factor

R NV ULong Watt-hours M_Energy_W_SF 0x0 to 0xFFFFFFFF M_Exported_W Total Exported Real Energy

R NV ULong Watt-hours M_Energy_W_SF 0x0 to 0xFFFFFFFF M_Exported_W_A Phase A Exported Real Energy

R NV ULong Watt-hours M_Energy_W_SF 0x0 to 0xFFFFFFFF M_Exported_W_B Phase B Exported Real Energy

R NV ULong Watt-hours M_Energy_W_SF 0x0 to 0xFFFFFFFF M_Exported_W_C Phase C Exported Real Energy

R NV ULong Watt-hours M_Energy_W_SF 0x0 to 0xFFFFFFFF M_Imported_W Total Imported Real Energy

R NV ULong Watt-hours M_Energy_W_SF 0x0 to 0xFFFFFFFF M_Imported_W_A Phase A Imported Real Energy

R NV ULong Watt-hours M_Energy_W_SF 0x0 to 0xFFFFFFFF M_Imported_W_B Phase B Imported Real Energy

R NV ULong Watt-hours M_Energy_W_SF 0x0 to 0xFFFFFFFF M_Imported_W_C Phase C Imported Real Energy

Format

Units

Scale

Accumulated Energy

Range

Power

Real Power

Apparent Power

Reactive Power

Power Factor

Real Energy

Name

SunSpec

Description

38

ZL0093-0A 11/2011

SunSpec Compliant Common and Meter Model Register Blocks

EM3555

NV

R/W

Register

40125

40126

40127

40128

40129

40130

40131

40132

40133

40134

40135

40136

40137

40138

40139

40140

40141 R NV UInt SF 1 M_Energy_VA_SF Real Energy Scale Factor

40142

40143

40144

40145

40146

40147

40148

40149

40150

40151

40152

40153

40154

40155

40156

40157

40158

40159

40160

40161

40162

40163

40164

40165

40166

40167

40168

40169

40170

40171

40172

40173

40174 R NV UInt SF 1 M_Energy_VA_SF Reactive Energy Scale Factor

R NV ULong VA-hours M_Energy_VA_SF 0x0 to 0xFFFFFFFF M_Exported_VA Total Exported Apparent Energy

R NV ULong VA-hours M_Energy_VA_SF 0x0 to 0xFFFFFFFF M_Exported_VA_A Phase A Exported Apparent Energy

R NV ULong VA-hours M_Energy_VA_SF 0x0 to 0xFFFFFFFF M_Exported_VA_B Phase B Exported Apparent Energy

R NV ULong VA-hours M_Energy_VA_SF 0x0 to 0xFFFFFFFF M_Exported_VA_C Phase C Exported Apparent Energy

R NV ULong VA-hours M_Energy_VA_SF 0x0 to 0xFFFFFFFF M_Imported_VA Total Imported Apparent Energy

R NV ULong VA-hours M_Energy_VA_SF 0x0 to 0xFFFFFFFF M_Imported_VA_A Phase A Imported Apparent Energy

R NV ULong VA-hours M_Energy_VA_SF 0x0 to 0xFFFFFFFF M_Imported_VA_B Phase B Imported Apparent Energy

R NV ULong VA-hours M_Energy_VA_SF 0x0 to 0xFFFFFFFF M_Imported_VA_C Phase C Imported Apparent Energy

R NV ULong VAR-hours M_Energy_VAR_SF 0x0 to 0xFFFFFFFF

Format

Units

Scale

Range

Apparent Energy

Reactive Energy

Name

M_Import_VARh_ Q1

M_Import_VARh_ Q1A

M_Import_VARh_ Q1B

M_Import_VARh_ Q1C

M_Import_VARh_ Q2

M_Import_VARh_ Q2A

M_Import_VARh_ Q2B

M_Import_VARh_ Q2C

M_Export_VARh_ Q3

M_Export_VARh_ Q3A

M_Export_VARh_ Q3B

M_Export_VARh_ Q3C

M_Export_VARh_ Q4

M_Export_VARh_ Q4A

M_Export_VARh_ Q4B

M_Export_VARh_ Q4C

Quadrant 1: Total Imported Reactive Energy

Phase A - Quadrant 1: Total Imported Reactive Energy

Phase B - Quadrant 1: Total Imported Reactive Energy

Phase C - Quadrant 1: Total Imported Reactive Energy

Quadrant 2: Total Imported Reactive Energy

Phase A - Quadrant 2: Total Imported Reactive Energy

Phase B - Quadrant 2: Total Imported Reactive Energy

Phase C - Quadrant 2: Total Imported Reactive Energy

Quadrant 3: Total Exported Reactive Energy

Phase A - Quadrant 3: Total Exported Reactive Energy

Phase B - Quadrant 3: Total Exported Reactive Energy

Phase C - Quadrant 3: Total Exported Reactive Energy

Quadrant 4: Total Exported Reactive Energy

Phase A - Quadrant 4: Total Exported Reactive Energy

Phase B - Quadrant 4: Total Exported Reactive Energy

Phase C - Quadrant 4: Total Exported Reactive Energy

SunSpec

Description

39

EM3555 SunSpec Compliant Common and Meter Model Register Blocks

ZL0093-0A

11/2011

NV

R/W

Register

40175

40176

40177 R NV UInt 0xFFFF

40178 R NV UInt 0x0000

R NV ULong Flags

Format

Units

Scale

Events

End of SunSpec Block

Range

SunSpec

Name

M_Events Bit Map. See M_EVENT_ags. 0 = no event

Description

Event Bit Description

M_EVENT_Power_ Failure

M_EVENT_Under_ Voltage

M_EVENT_Low_PF 0x00000010 Power factor below threshold

M_EVENT_Over_ Current

M_EVENT_Over_ Voltage

M_EVENT_ Missing_Sensor

M_EVENT_ Reserved1-8

M_EVENT_ OEM1-15

0x00000004 Loss of power or phase

0x00000008 Voltage below threshold

0x00000020 Current input over threshold

0x00000040 Voltage input over threshold

0x00000080 Sensor not connected (not

0x00000100 to 0x00008000

0x7FFF000 Reserved for OEMs (not

C_SunSpec_DID = 0xFFFF

Uniquely identies this as the last SunSpec block

C_SunSpec_Length = 0 Last block has no length

(phase loss)

(can indicate misassociated voltage and current inputs in 3-phase systems)

(out of measurement range)

supported)

Reserved for future SunSpec use

used)

40

ZL0093-0A 11/2011

TROUBLESHOOTING

Table 10 Troubleshooting

Problem Cause Solution

The maintenance wrench icon appears in the power meter display.

The display is blank after applying control power to the meter.

The data displayed is inaccurate.

Cannot communicate with power meter from a remote personal computer.

Sign of one phase (real power) is incorrect

There is a problem with the inputs to the power meter.

The meter is not receiving adequate power.

Incorrect setup values Verify the values entered for power meter setup parameters (CT and PT

Incorrect voltage inputs Check power meter voltage input terminals to verify adequate voltage.

Power meter is wired improperly.

Power meter address is incorrect.

Power meter baud rate is incorrect.

Communications lines are improperly connected.

CT orientation reversed Remove CT, reverse orientation, reconnect (qualied personnel only)

See the Alert sub-menu or the Diagnostic Alert Modbus Register 146

Verify that the meter control power is receiving the required voltage. Verify that the heart icon is blinking. Check the fuse.

ratings, system type, etc., see Setup section).

Check all CTs and PTs to verify correct connection to the same service, CT and PT polarity, and adequate powering (see Wiring Diagrams section).

Verify that the meter is correctly addressed (see Setup section).

Verify that the baud rate of the meter matches that of all other devices on its communications link (see Setup section).

Verify the power meter communications connections (see Communications section). Verify the terminating resistors are properly installed on both ends of a chain of units. Units in the middle of a chain should not have a terminator. Verify the shield ground is connected between all units.

Troubleshooting

EM3555

CHINA ROHS COMPLIANCE INFORMATION (EFUP TABLE)

产品中有毒有害物质或元素的名称及含量Substances

部件名称

铅 (Pb) 汞 (Hg) 镉 (Cd) 六价铬 (Cr(VI)) 多溴联苯(PBB) 多溴二苯醚(PBDE)

电子线路板 X O O O O O

O = 表示该有毒有害物质在该部件所有均质材料中的含量均在 SJ/T11363-2006 标准规定的限量要求以下. X = 表示该有毒有害物质至少在该部件的某一均质材料中的含量超出SJ/T11363-2006标准规定的限量要求.

Z000057-0A

41

EM3555 Installation Guide

Schneider Electric

295 Tech Park Dr. Suite 100 La Vergne TN, 37086

For technical support: Global-PMC-Tech-suppor t@schneider-electric.com (00) + 1 250 544 3010

Contact your local Schneider Electric sales representative for assistance or go to

www.schneider-electric.com

ION, Modbus, and PowerLogic are either trademarks or registered trademarks of Schneider Electric in France, the USA and other countries. Other trademarks used are the property of their respective owners.

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.

Schneider Electric EM3555 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual