Schneider Electric PowerLogic EM4900 Power Meters User Guide

EM49xxx Series Multi-Circuit Meters

User Guide

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EM49xxA

EM49xxE

www.schneider-electric.com

DR

AF

T

EM49xxx Series Multi-Circuit Meters

Legal Information

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The Schneider Electric brand and any registered trademarks of Schneider Electric Industries SAS referred to in this guide are the sole property of Schneider Electric SA and its subsidiaries. They may not be used for any purpose without the owner's permission, given in writing. This guide and its content are protected, within the meaning of the French intellectual property code (Code de la propriété intellectuelle français, referred to hereafter as "the Code"), under the laws of copyright covering texts, drawings and models, as well as by trademark law. You agree not to reproduce, other than for your own personal, noncommercial use as defined in the Code, all or part of this guide on any medium whatsoever without Schneider Electric’s permission, given in writing. You also agree not to establish any hypertext links to this guide or its content. Schneider Electric does not grant any right or license for the personal and noncommercial use of the guide or its content, except for a non-exclusive license to consult it on an "as is" basis, at your own risk. All other rights are reserved.

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.

As standards, specifications and designs change from time to time, please ask for confirmation of the information given in this publication.

© 2017 Schneider Electric All Rights Reserved.

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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 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 hazardous situation which, if not avoided, 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.



Safety Precautions

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DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

• This product must be installed inside a suitable fire and electrical enclosure.

• Follow safe electrical work practices. See NFPA 70E in the USA, or applicable local codes.

• This equipment must only be installed and serviced by qualified electrical personnel.

• Do not use this device for critical control or protection applications where human or equipment safety relies on the operation of the control circuit.

• Do not install this product in hazardous or classified locations.

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

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

• Product may use multiple voltage/power sources. Disconnect all sources before servicing.

• Use a properly rated voltage sensing device to confirm that power is off.

• Do not use data from this device to confirm power is off.

• Replace all doors, covers and protective devices before powering the equipment.

• Do not exceed the product's ratings or maximum limits.

• Treat communications and I/O wiring connected to multiple devices as hazardous live until determined otherwise.

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

If this product is used in a manner not specified by the manufacturer, the protection provided by the product may be impaired.

The installer is responsible for conformance to all applicable codes.

The safety of any system incorporating this equipment is the responsibility of the assembler of the system.

Note: See IEC 60950-1:2005, Annex W for more information on communications and I/O wiring connected to multiple devices.

Protective bonding: electrical connection of accessible conductive parts or protective screening to provide electrical continuity to the means for connection of an external protective conductor.

i iii © 2017 Schneider Electric All Rights Reserved.

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Control system design must consider the potential failure modes of control paths and, for certain critical control functions, provide a means to acheive a safe state during and after a path failure. Examples of critical control functions are emergency stop and over-travel stop.

WARNING

LOSS OF CONTROL

• Ensure that the system will reach a safe state during and after a control path failure.

• Separate or redundant control paths must be provided for critical control functions.

• Test the effect of transmission delays or failures of communication links.

• Each implementation of equipment using communication links must be individually and thoroughly tested for proper operation before placing it in service.

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

For additional information about anticipated transmission delays or failures of the link, refer to NEMA ICS 1.1 (latest edition). Safety Guidelines for the

Application, Installation, and Maintenance of Solid-State Controls or its equivalent in your specific country, language, and/or location.

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 disconnecting device for supply conductors with approved current limiting devices suitable for protecting the wiring.



FCC Notice

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FCC PART 15 INFORMATION

EM49xxA Models: 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 in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.

However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment to an outlet on a circuit different from that of the receiver.

• Consult the dealer or an experienced radio/TV technician for help.

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.

EM49xxE Models: 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.

CAN ICES-3 (B) /NMB-3(B)


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Contents


Specifications ...................................................................................................... 1

Introduction ......................................................................................................... 2

EM49xxx Series Multi-Circuit Meters Product Photos ........................................ 3

Parts of the EM49xxx .......................................................................................... 4

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

Data Outputs ....................................................................................................... 6

Blink Codes for Status LED (EM49xxA Models Only) ......................................... 9

Installation ........................................................................................................... 9

Wiring ................................................................................................................ 13

Configuration .................................................................................................... 17

Default DIP Switch Settings .............................................................................. 19

Address Selection ............................................................................................. 20

Gateway Configuration ..................................................................................... 21

Accessing the Graphical User Interface (GUI) ............................................. 21

Using the Toolbox to Set Up the IP Address for Use on Your Network ........ 21

Using the GUI to Set Up the IP Address for Use on Your Network .............. 23

Using the GUI to Set the Configuration Parameters for the

Communication Protocols ....................................................................... 26

1. BACnet MS/TP Mode ............................................................................... 28

2. BACnet IP Mode ....................................................................................... 29

3. SNMP Mode ............................................................................................. 30

Operating the EM49xxE .................................................................................... 30

BACnet Network Management - Important Steps to Avoid Conflicts ................ 30

BACnet PICS (Protocol Implementation Conformance Statement) .................. 32

Standard Object Types Supported ............................................................... 32

Unsupported Properties and Restrictions..................................................... 32

Data Link Layer Options ............................................................................... 32

Networking Options ..................................................................................... 32

Character Sets Supported ........................................................................... 32

General BACnet Programming Information ...................................................... 33

BBMD Support ............................................................................................. 33

General SNMP Programming Information ........................................................ 34

Commissioning ................................................................................................. 35

Recommended Accessories ............................................................................. 35

Troubleshooting ................................................................................................ 36

China RoHS Compliance Information ............................................................... 36



Specifications

1

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Table 1: Specifications

Type

Measurements

Measurement Voltage

Description

90 to 300 Vac line-to-neutral, 50/60 Hz

Total Harmonic Distortion (THD) THD % voltage line-to-line, line-to-neutral and THD % on current

Control Power

EM49xxA

EM49xxE

Accuracy

Power/Energy



IEC 62053-21 Class 0.5, ANSI C12.20 class 0.5

Voltage ±0.5% of reading 90 to 277 V line-to-neutral

Current

Operation

Sampling Frequency

±0.5% of reading from 2% to 100% of full-scale

2560 Hz

Update Rate

Overload Capability

1.8 seconds (both panels)

22 kAIC

EM49xxA Serial Communication

Type

Connection

Modbus RTU

DIP switch-selectable 2-wire or 4-wire, RS-485

Address

Baud Rate

Parity

Communication Format

DIP switch-selectable address 1 to 247 (in pairs of 2)*

DIP switch-selectable 9600, 19200, 38400

DIP switch-selectable NONE, ODD, EVEN

8 data bits, 1 start bit, 1 stop bit

Termination 5-position plug-in connector

(TX+ TX- SHIELD TX+/RX+ TX-/RX-)

EM49xxE Serial Communication

Physical Interface

Serial Protocols Supported

2-wire RS-485

Modbus RTU or BACnet MS/TP

Address Range

Baud Rate

Parity

1 to 247 for Modbus RTU; 0 to 127 for BACnet MS/TP

9600, 19200, 38400

Modbus RTU: NONE, ODD, EVEN

BACnet MS/TP: NONE (fixed)

8 data bits, 1 start bit, 1 stop bit Communication Format

Termination 2x3 position connector

EM49xxE Ethernet Communication

Physical Interface RJ45 connector with 10/100 Mbit Ethernet

Modbus TCP, BACnet IP, SNMP V2c Protocols Supported

Wire Size Range

Removable Connectors on

Main Board

24 to 12 AWG

CT Terminals and EM49xxE

Serial Connector Terminals

Terminal Block Torque

Removable Connectors

Mechanical

Ribbon Cable Support

(28-meter models only)

26 to 16 AWG

4.4 to 5.3 in-lb (0.5 to 0.6 N-m)

4 ft. (0.9 m) round ribbon cable ships standard; up to 20 ft.

(6 m) flat or round available


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Introduction



Type

Operating Conditions

Operating Temperature Range

Description

Storage Temperature Range

Altitude of Operation

0 to 60 °C (32 to 140 °F) (<95% RH non-condensing)

-40 to 70 °C (-40 to 158 °F)

3000 m

Not suitable for wet locations. For indoor use only.

Mounting Location

Compliance Information

Agency Approvals

Installation Category

Conducted Emissions

Radiated Emissions

UL508 open type device**, IEC/EN61010-1

Cat III, pollution degree 2***

EM49xxA Models: FCC part 15 Class B, EN61000-6-3,

EN61326-1 Class B (residential and light industrial)

EM49xxE Models: FCC part 15 Class A, EN6100-6-4, EN61326-1

Class A

Conducted and Radiated

Immunity

EN 61000-6-2 and EN 61326-1

* See Configuration section for details.

**The EM49xxx must be installed in an appropriate electrical and fire enclosure per local regulations.

If EM49xxx products are used in installations with circuits higher than the product ratings, the circuits must be kept segregated per UL508A Sec. 17.5. Note: EM49xxx internal circuitry (cables and CTs) are not circuits as defined by UL508A, as they do not extend beyond the EM49xxx itself without further safety/fire isolation.

*** 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.

The EM49xxx Series Multi-Circuit Meters are designed to measure the current, voltage and energy consumption of up to 14 3-phase circuits with a single board or up to 28 3-phase circuits with a 2-board configuration.

The EM49xxx uses commonly available split-core current sensors with 1/3 V

(voltage-mode) outputs to cover a wide range of loads.

Data is transmitted using an RS-485 Modbus protocol. EM49xxE models also incorporate Ethernet, with support for BACNet IP, Modbus TCP and SNMP protocols and include BACnet MS/TP serial capability and a sturdy metal enclosure.

The EM49xxx comes pre-configured for 3-phase loads, but can easily be configured on-site to accommodate any combination of 3-phase, 2-phase and single-phase loads, with or without Neutral current, using the channels available on the model selected (see Table 2).

To configure the EM49xxx for operation, use the Schneider Electric ION Setup configuration software tool. ION Setup is available online at https://schneider-electric.box.com/ionsetuplatest.

Figure 1 Product Identification

Number of

3-Phase Meters

Communication

Option

EM49

04 = 4 (3-phase) meters




A = Modbus RTU only

E = Integrated Ethernet with

Modbus, BACnet & SNMP

2


EM49xxA

Modbus RTU Only

EM4904A

EM4908A

EM4914A

EM4928A

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Table 2: Number of Meters Supported

EM49xxE

Integrated Ethernet

EM4904E

EM4908E

EM4914E

EM4928E

3-Phase without Neutral

4

8

14

28

3-Phase with Neutral

3

6

10

21

2-Phase

6

12

21

42

1-Phase

12

24

42

84

Figure 2 Product Photos

EM49xxA

3

EM49xxE


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Parts of the EM49xxx


Figure 3 shows the parts of the EM49xxx. Table 3 describes these parts.

Figure 3 EM49xxx Panelboard Monitoring System

15

A

B

1

A

B 15

12

6 7 6 7

4 4

14 14

3

2

9

10

8

13 3

2

9

10

8

13

5

EM4914A

5

EM4928A

11

10 8

15

13

12

5 2

15

EM4914E

11

10 8

15

13 5 2

1

15

EM4928E


4


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Table 3: Parts Description of the EM49xxx Series

2

3

4

5

6

Part

1 50-pin ribbon cable connectors

(EM4928A and EM4928E only)

Control power connection

Control power fuse

Alive LED (EM49xxA models)

Voltage taps

Communications address DIP switch (EM49xxA models)

Description

Ribbon cables attach here for easy connection of adapter boards to the data acquisition board. The two connectors on the left are for Panelboard 1 and the two on the right are for Panelboard 2.

Notes:

Connect Adapter Board Connectors A and B to the correct ribbon cable connectors for each panel. The top connectors are for

Adapter Board Connector A, and the bottom connectors are for Adapter Board Connector B.

The standard ribbon cable included with EM4928A and EM4928E is 4 feet long (1.2 meters). For other ribbon cable options, see the Recommended Accessories section.

Provides power to operate the meter.

600 Vac, 500 mA time lag, factory replaceable.

Red/green/amber LEDs. Blink codes are described in the Blink Codes for Status LED section of this document.

1, 2, or 3 phase plus neutral connections. For voltage sensing and power calculations. Voltage taps are shared by both panels.

Each Modbus device must have a unique address. Switches are binary weighted. Left-most switch has a value of 1; right-most switch has a value of 128. Note: switches set the address for panel 1; panel 2 is automatically set to (Panel 1 address + 1).

See Configuration section for details.

Configures baud rate, parity, 2- or 4-wire communications.

7 Communications settings DIP switch (EM49xxA models)

RS-485 connection 8

9 RS-485 LEDs

(EM49xxA models)

10 Power LED

11 Ethernet connection

(EM49xxE models only)

12 CT lead connections

13 Ground terminal

14 Mounting studs

15 Holes

Used for Modbus serial communications. The Universal plug accommodates 2 or 4 wire connections.

The RX LED (closest to DIP switches) indicates the RS-485 is receiving information; the TX LED indicates transmission of information.

Indicates power to the EM49xxx.

For optional plexiglas cover (AE001).

For mounting the EM49xxx.

Dimensions

Figure 4 EM49xxA Base Board

8.3”

(211 mm)

7.9”

(200 mm)

3.9”

(100 mm)

Ø = 0.2”

(5 mm)

4.8”

(122 mm)

5.8”

(146 mm)

1.75”

(45 mm)

1.74”

(44 mm)

7.3”

(184 mm)

8.9”

(226 mm)

5 © 2017 Schneider Electric All Rights Reserved.

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Figure 5 EM49xxE Main Unit


Data Outputs


2x: 5.9”

(150 mm)

12.1”

(307 mm)

12.8”

(325 mm)

13.9”

(353 mm)

8.9”

(225 mm)

10.0”

(253 mm)

8.2”

(210 mm)

2.8”

(71 mm)

Figure 6 28-Meter CT Adapter Assembly

15 15

1

12 12

9.50”

(241 mm)

0.56” (14.3 mm)

1.60” (40.5 mm)

5.53” (140.5 mm)

6.56” (167 mm)

7.13” (181 mm)

The EM49xxx provides several types of measurements that give a comprehensive view of power consumption for every load on the panel (Table

4 shows which measurements are offered on each model):

• Real-time measurements: A live and up-to-date view of present power levels and the factors that affect them.

6


7

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• Demand measurements: Averages of values measured over a specified time interval. The time interval (typically 15 minutes) can be set from 10 seconds to more than a day. The demand calculation can be configured to use single intervals or the sliding average of up to six sub-intervals. Demand measurements are useful for tracking or graphing load levels over time to correlate with total energy consumption.

• Historic maximum measurements: These measurements store the largest value recorded for a specific measurement since the last time they were cleared. They are useful for identifying peak levels critical to equipment sizing or demand limits in utility agreements.

• Accumulated energy measurements: Ongoing totals of cumulative energy used since the last time the value was cleared. Energy values provide the informational basis for billing, cost allocation, carbon offset, BTU equivalent calculations, and other applications of overall energy use.

• Energy snapshots: Energy totals that only change when the demand intervals are updated. They are samples of the free-running energy accumulators at the end of each demand interval, as configured by the user. These provide energy readings that are easily correlated to the demand values to simplify the tasks of sub-billing and cost allocation.

• Alarms: Informs of excessively high or low current on each branch and aux channel. The user can set two high-level and two low-level thresholds, and a delay time for latching alarms. Alarms are reported as both non-latched events and latched events. Non-latching alarms are active while the current exceeds the threshold, but go inactive if the current returns to a level within the specific thresholds. Latching alarms become active when the current exceeds the threshold for a time period greater than the specified delay and remain active until they are cleared remotely.

• Alarm status can be polled via Modbus.

Advanced Features - The EM49xxx also supports a number of advanced features. Some are always active, and others are configured manually via

Modbus register 62017). For models with 42 channels or more, these features are configured independently for each panel.

• Logical meter support: The EM49xxx can be configured to map any set of 1, 2 or 3 channels that are adjacent in the panel to a logical meter, referred to in the point map as a logical circuit, that provides accurate multi-phase measurement totals. Map these logical circuits by writing the desired logical circuit number into a set of registers/data objects provided for each branch and aux channel (per panel).

• The channels assigned to each logical circuit must be adjacent in the panel (for example, channels 5, 6 and 7), but there are no limitations on where those adjacent channels are aligned in the panel

(any position where a multi-phase breaker can be installed). This functionality is always active, but a user selection affects how the data can be accessed via Modbus. Measurement data via Modbus for logical circuits is presented in two ways: arranged either by logical circuit number (looks more like a collection of individual meters) or by measurement type (arranged similar to the single-phase data section of the point map).

• Phase angle measurements: The EM49xxx measures the phase angle of every voltage and current input and presents these measurements

(in degrees) in additional data registers/objects. These values are used to verify that current inputs are assigned to the proper voltage phases and to help determine how power factor variations are influenced by current phase changes vs. harmonic distortion. Phase angle measurements are instantaneous and always active.


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• User CT phase assignment: By default, the EM49xxx assigns each

CT channel to voltage phases on a rotating sequence. The user can easily override the default phase assignments as needed to accommodate their specific application or miswiring of phases on installation. The explicit assignments set by the user are stored by the

EM49xxx in non-volatile memory.

• Phase angle reference: The EM49xxx measures the phase angle of every current and voltage input. The user can select whether the phase angles are stated relative to an absolute reference (the phase angle of voltage input V1) or relative to the voltage phase assigned to that specific current input channel.

• Signed power: Users can configure the EM49xxx to report power as a signed value indicating whether the power is currently being delivered

(imported from the grid) or received (exported to the grid) for channels with generation sources or bi-directional (regenerative) loads. When signed power is disabled, the energy accumulators include all energy measured, regardless of direction. When signed power is enabled, the energy accumulators only include all energy delivered (imported from the grid).

• Signed power factor: By default, the EM49xxx reports power factor as an unsigned value. The user can set it to report as a signed value, where the sign indicates whether the current phase angle leads or lags the corresponding voltage phase.

• Demand/snapshot time interval source: The EM49xxx offers two mechanisms for driving the demand/snapshot time interval, an interval timer or an RTC (real-time clock). The legacy mode (default) uses an interval timer that does not need to be set to an absolute time. When using the interval timer the demand/snapshot interval can be set from

10 to 32,767 seconds (over 9 hours). An alternate mode utilizes an

RTC set to a specific date and time to synchronize the results with a larger system. The RTC must first be set in order to run and capture demand values and energy snapshots. When power is interrupted, the

RTC resets to a default date and time and must be set again in order to run. When using the RTC, the demand/snapshot interval can be set from 10 to 3,600 seconds (1 hour).

Table 4: Data Outputs Table

Measurements

Real Time

Measurements

Demand Measurements

Historic Maximums

Accumulated Energy

Energy Snapshots

Modbus Alarms

Current: multi-phase average and per phase

Current phase angle per branch

Real power (kW): multi-phase total and per phase

Apparent power (kVA): multi-phase total and per phase

Power factor: multi-phase average and per phase

Current present demand: multi-phase average and per phase

Real power (kW) present demand: multi-phase average and per phase

Maximum instantaneous current: multi-phase average and per phase

Maximum current demand: multi-phase average and per phase

Maximum real power demand: multi-phase total and per phase

Energy (kWh): multi-phase total and per phase

Energy (kWh): multi-phase total and per phase

Alarms

Voltage over/under

Branch current over/under

Mains current over/under

8


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Blink Codes for Status LED (EM49xxA Models Only)

Table 5: Blink Codes

Color & Pattern

Green, once per second

Amber, once per second

Amber, twice per second

Red, solid or blink

Installation

Status Description

Normal operation

Volts or amps clipping

Invalid firmware image

Diagnostic event detected

NOTICE

ESD-SENSITIVE DEVICES

Observe handling precautions for static sensitive devices.

Failure to follow this instruction can result in damaged circuitry and loss of factory warranty.

DANGER


• This product must be installed inside a suitable fire and electrical enclosure.


• This equipment must only be installed and serviced by qualified electrical personnel.

• Do not use this device for critical control or protection applications where human or equipment safety relies on the operation of the control circuit.

• Do not install this product in hazardous or classified locations.

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


• Product may use multiple voltage/power sources. Disconnect all sources before servicing.



• Do not exceed the product's ratings or maximum limits.

• Treat communications and I/O wiring connected to multiple devices as hazardous live until determined otherwise.

• Use the protective ground connection on the mounting bracket if the device is not mounted to a suitable ground surface.


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

2. Always use a properly rated voltage sensing device to confirm power is off.

3. Install the acquisition board mounting bracket in the panel. Panels can be oriented side-by-side (Figure 7) or vertically (Figure 8). A grounding connection is located on the mounting bracket, near the lower right corner.


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Figure 7

Panel 1 Panel 2

EM49xxA

Ground

Figure 8

Panel 1

Panel 2

Main Circuit Board


4. Determine where you will mount the EM49xxx measurement unit.

The preferred location is inside the enclosure of the panelboard being monitored. If sufficient space is not available there, mount the unit in an appropriate enclosure nearby. Decide whether to mount the EM49xxx vertically or horizontally.

The EM49xxE is shipped with the brackets placed on the two sides for vertical mounting. If desired, you can move the brackets from the sides to the ends of the housing (see Figure 9). Loosen the screws on the sides of the EM49xxE that hold the brackets in place. Do not fully remove the screws from the housing. Loosen the screws on the two ends of the housing, but do not fully remove them, and set the brackets into their new positions. Tighten all screws.

10


Figure 9

Vertical and Horizontal

Mounting Options

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EM49xxE

5. On EM4928A or EM4928E models, connect the 28-meter adapter assembly to the meter using the ribbon cables supplied. To order different length cables, see the list of Recommended Accessories.

Figure 10

11

28-Meter

CT Adapter

Board

EM4928A

EM4928E

6. The EM49xxx supports CTs with voltage mode outputs (0.333V full-scale).

Install the current sensors onto the conductors to be monitored according to the instructions provided with the CTs.

NOTICE

EQUIPMENT DAMAGE

Do not use CTs with current-mode outputs.

Failure to follow this instruction can result in equipment damage.


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X2

X1

X2

X1

Figure 11

Figure 12


X2

X1

X2

X1


EM49xxA

EM49xxE

7. Strip 9 mm of insulation from the end of the CT leads. A visual strip length indicator is provided on the CT adapter board to show how much to strip.

Figure 13

Strip Length

Indicator

Locations

28-Meter CT Adapter Board

12


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8. To connect the stripped CT leads, press the square button on the desired connector input, insert the stripped end of the wire completely, and release the button.

9. Insert the x1 lead (white wire on Schneider Electric LVCTs) to the inputs on the white connector and the x2 lead (black wire on Schneider Electric

LVCTs) to the inputs on the black connector.

10. Plastic cable ties are included with the product for strain relief on the

EM4928A and EM4928E. Insert the strain relief device into one of the available holes on the adapter board (Figure 14A). Gather all current sensor wires connected to that adapter board and secure the cable tie around them (Figure 14B).

Figure 14

A B

Wiring

13

11. The adapter boards are silk screened with labeling for the default configuration of all 3-phase meters. Alternate label overlays are provided for configurations with all 2-phase meters or all single-phase meters.

Channel numbers are provided as well for setting up and using custom configurations with mixed meter types.

Note: On the EM4928A and EM4928E, the adapter board is configured with sequential numbers for the logical meters, but the channel numbers are in two sets of 42 channels associated with two different Modbus configuration panels (similar register set at different Modbus addresses).

DANGER


• While removing or installing panels and covers, ensure that they do not contact an energized bus.

• Never bypass external fusing.

• Never short the secondary of a potential transformer.

• Before closing covers and doors, carefully inspect the work area and remove any tools, wire scraps or other objects that may

have been left inside the equipment.

• Do not exceed the product’s ratings or maximum limits.

• Turn off all power supply equipment before working on or inside equipment.

• Use a properly rated voltage sensing device to cofirm that power is off.

• Treat all measurement circuits and CT connections as energized live.



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NOTICE


Observe handling precautions for static sensitive devices.


For all steps in this section, when tightening terminals, apply the correct torque.

Removable connectors on main board: 4.4 to 5.3 in-lb (0.5 to 0.6 N-m). See

Figure 15.

Figure 15


1. Connect 2-wire 90 to 277 VAC power to the main power terminals. Observe polarity. Connect voltage lines to the voltage taps (Figure 20). Provide overcurrent protection and disconnecting means to protect the wiring.

Wiring configurations are listed below.

120/240 V Delta High Leg

Figure 16

V3

V2

N

N V1

120/240 V Delta High Leg (where the center tap of one of the three phase-to-phase transformers is grounded): the EM49xxx supports these applications, as long as the line-to neutral voltage (especially of the High Leg) does not exceed 300 Vac, as in North American 120/240 V High Leg Delta configurations.

3-Wire (Ungrounded) Delta

Figure 17

V3

V2 V1

X

In 3-wire (ungrounded) Delta applications, the EM49xxx supports these applications with the following caveats:

Control Power for the meter cannot exceed 277 Vac. In applications where the L-L voltage is 277 Vac or less (e.g. 208 V line-to-line) it can be connected

14


Figure 20

15

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07/2017 to two of the phases being monitored without exceeding the limit. For higher voltages (e.g. 480 V line-to-line), this must be supplied from a source that is

277 Vac or less. It could be a separate source or a transformer can be used to step it down from two of the phases being measured.

4-Wire Wye, 3-Wire Split-Phase and 2-Wire Single Phase

Figure 18

4-wire

Wye

V3

3-wire

Split-phase

V2

2-wire

Single-phase

V1

N

N

N

V2 V1

V1

The EM49xxx supports measurement of all 4-wire Wye, 3-wire split-phase and

2-wire single phase and configurations that operate between 90 and 300 Vac line-to neutral. Voltage taps are shared by both panels.

Corner-Grounded Delta

Figure 19

V3

V2 V1

Corner-grounded delta: the EM49xxx does not support these applications at any voltage level.

The EM49xxx supports measurement of all 4-wire Wye, 3-wire split-phase and

2-wire single phase and configurations that operate between 90 and 300 Vac line-to neutral. Voltage taps are shared by both panels.

EM49xxE

EM49xxA

Control

Power

V2/N

90 to 277 Vac

V1/L

V1

Voltage Inputs

90 to 300 V 50/60 Hz

V2 V3 N

L-L L-N

N

Voltage Inputs

90 to 300 V 50/60 Hz

V3 V2 V1

L-N

Control Power

100 to 277 V 50/60 Hz 15 VA

V1 V2/N

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EM49xxA


2. Connect 2-wire or 4-wire Modbus RS-485 daisy chain network (Figures 21 and 22).

Figure 21

EM49xxE

S

–

+

RS-485

S

–

+

SHIELD

RX- TX-

RX+ TX+

TX-

TX+

Figure 22

TX+ TX–

TX+

RX+

TX-

RXSHLD

SHIELD SHIELD

3. Mechanically secure the RS-485 cable(s) where they enter the electrical panel.

4. Connect all RS-485 devices in a daisy-chain fashion, and properly terminate the chain (Figure 23).

Figure 23

RS-485 cable

120 Ω terminator at each end of daisy chain RS-485 cable

120 Ω terminator at each end of daisy chain

EM49xxA EM49xxE

5. Shield the RS-485 cable using twisted-pair wire. The cable must be voltage-rated for the installation.


16


Configuration

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DANGER





NOTICE


• Observe handling precautions for static sensitive devices.


1. Communications Configuration: Communications parameters for the

EM49xxx series are field selectable for your convenience. Please see the

Parts of the EM49xxx section for selector location. EM49xxA models are set using DIP switches on the main board. EM49xxE models are configured with the GUI (Graphical User Interface). See the Gateway Configuration section for further information.

The following parameters are configurable:

• Baud Rate: 9600, 19200, 38400

• Parity On or Off

• Parity: Odd or Even

• Wiring: 2 or 4

Figure 24 Example: 2-wire 19200 Baud No Parity

B

ø

B1 Off/

On

Parity

Odd/

Even

Parity

2/4

Wire

Reserved


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07/2017


EM49xxx Series Multi-Circuit Meters on off on

1 2 3 4 5 6 7 8

off off X X X off on on off on off on off off on on on off

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

9600

19200

38400

Reserved

No Parity

Odd Parity

No Parity

Even Parity

4-wire RS-485

2-wire RS-485

2. Address Configuration: Each Modbus device on a single network must have a unique address. Set the switch block to assign a unique address before the device is connected to the Modbus RS-485 network. If an address is selected that conflicts with another device, neither device will be able to communicate.

3. The EM49xxx uses two logical addresses. Panel 1 uses the base address as set on the DIP switches. Panel 2 uses this base address + 1. Address the EM49xxx as any whole number between and including 1-246. Each unit is equipped with a set of eight DIP switches for addressing. See diagram below.

LSB

1 2 4 8 16 32 64 128

=

1

MSB

DIP Switch Values

4. To determine an address, simply add the values of any switch that is on.

For example:

LSB

=

40

MSB

Switch number 4 has an ON Value of 8 and switch number 6 has an ON Value of 32. (8 + 32 = 40). Therefore, the address for Panel 1 is 40, and the address for Panel 2 is 41.

See the Address Selection section for a pictorial listing of the switch positions for Modbus address selection.

18


Default DIP Switch Settings

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The EM49xxA includes two DIP switches, as shown below. Switches are shown in their default positions.

EM49xxA

Comms Address Comms Settings


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Address Selection


DO NOT

USE ZERO

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20 21

22 23 24 25 26 27 28 29 30 31 32

33 34 35 36 37 38 39 40 41 42 43

44 45 46 47 48 49 50 51 52 53 54

55 56 57 58 59 60 61 62 63 ...... 246


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Gateway Configuration

Accessing the Graphical User Interface (GUI)

If the EM49xxE IP address parameters are already configured to work on the network and is being accessed from a PC on that same network, open a web browser and enter the IP address of the EM49xxE into the address/URL field on the browser. Press Enter . The GUI launches and appears, as shown, in the browser window. Note: The screen captures provided in this example were taken using Windows 7; other operating systems will look different.

If the EM49xxE IP address parameters are not configured for the network, you can either use a PC-based tool called the Toolbox, available on the USB drive provided (see the section “Using the Toolbox to Set Up the IP Address for Use on Your Network”) or connect a PC directly and access the GUI as described in the section “Using the GUI to Set Up the IP Address for Use on Your Network”.

Using the Toolbox to Set Up the IP Address for Use on Your Network

1. Access the Toolbox software available on the USB drive provided.

2. Extract the software from the zip file.

3. Run the Setup.exe file and follow the installation instructions.

4. Either connect the EM49xxE Ethernet interface to the same network subnet as your PC or connect a cable between them directly. You will not need to change any network settings on the PC for the Toolbox software to find the

EM49xxE.

5. Apply power to the EM49xxE.

6. Launch the Toolbox software. It will discover the EM49xxE, regardless of its

IP settings.

7. Click the gear-shaped configuration icon near the right edge of the window on the line that shows the device you wish to configure. The Configure

Device dialog will appear.


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8. Click the Network Settings button. The Device Network Settings dialog will appear. This dialog shows all the current IP settings of the EM49xxE.

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9. Enter the network settings needed to operate properly on your network.

10. Click the Update IP Settings button. The Change IP Settings confirmation dialog will appear.

Confirm that the settings you entered are correct and click the Change and

Restart button. The EM49xxE will reset and power up with the new settings. If you watch the Toolbox screen, the entry for the old address will soon show a lost connection. Eventually a new entry with the new IP address will appear and the old entry will be deleted.

11. Disconnect the EM49xxE and connect it to the network on which it will be used.

Using the GUI to Set Up the IP Address for Use on Your Network

If the EM49xxE IP address parameters are not configured for the network, connect a PC directly and access the GUI from it as follows:

1. Connect a standard Ethernet cable between a PC and the EM49xxE if they are not already connected. Secure a ferrite filter (included) around the

Ethernet cable to ensure the device meets emission requirements.

23

EM49xxE

2. Temporarily change the IP address of the PC to a static value on the same subnet as the EM49xxE. For example: If the EM49xxE is set to its factory default IP address of 192.168.1.24, set the PC to an unused static IP address on the 192.168.1.xxx subnet (where xxx is any value between 1 and 255, except 24). Set the subnet mask to 255.255.255.0.

a. Open the Control Panel: b. In the Control Panel, select Network and Sharing Center . In the

Sharing Center, select Change Adapter Settings in the list at the upper left corner.

c. Select the connection for the network to which the EM49xxE is connected.


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When the Local Area Connection Status dialog box appears, click

Properties .

d. Highlight Internet Protocol Version 4 (TCP/IPv4), and click OK .


e. Select Use the following IP Address . Make note of the IP address that appears, then enter the static IP address (e.g. if the EM49xxE is still set to its default address of 192.168.1.24, then change it to 192.168.1.100). Enter

255.255.255.0

for the subnet mask. Click OK .

24


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Enter static

IP address

Enter subnet mask f. Click OK .

3. Open a PC web browser and enter the IP address of the EM49xxE (default address is 192.168.1.24) to access the GUI. The GUI launches and appears in the browser window.

4. To set IP address parameters, click the button labeled Network Settings .

25

The Network Settings overlay appears.

Have the desired IP settings ready in advance (contact the system administrator for this information). IP parameters for use with BACnet IP are static, not dynamic.

5. Set the IP address for use on the BACnet/IP network:


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07/2017 EM49xxx Series Multi-Circuit Meters a. Enter the desired IP address in the N1_IP_Address field (in the format xxx.xxx.xxx.xxx) b. If necessary, change the Subnet Mask by entering the appropriate new value in the N1_Netmask field c. If the EM49xxE is connected to an Ethernet gateway, enter its IP address in the Default Gateway field. This is especially critical if the EM49xxE will be used as a BACnet BBMD device.

d. Click the Update IP settings button. The EM49xxE changes its settings.

e. Click the System Restart button and wait for the EM49xxE to fully initialize. The GUI will connect when the EM49xxE is installed on a network that matches the settings and the new IP address is entered into a web browser on a PC properly configured for the network.

Using the GUI to Set the Configuration Parameters for the Communication Protocols

Access the GUI according the instructions in the “Accessing the Graphical User

Interface (GUI)” section.


26


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The home screen on the GUI provides fields for configuration of the EM49xxE.

The EM49xxE has four primary modes of operation, each of which support a different combination of protocols. Each option field has a Submit button on the right-hand side. When changing the value in any field, click Submit to store the new value. The GUI prompts the user to restart the system. If multiple values are changed, it is easiest to submit all changes and restart only once when finished with the whole screen. To restart, click the System Restart button in the row at the bottom of the screen. The restart takes several seconds, during which the server may lose its connection. Messages appear at the top of the screen indicating current status, but do not perform any actions. Simply allow the tool to complete the restart cycle.

The first selection in the GUI is Operating_Mode, which has two choices:

1. Locked: used for all normal product operation. It is provided as a tool for high-level technical support. The gateway retains its current profile configuration when powered.

2. Discovery mode (default): deletes profiles and rediscovers them when the device is powered again. The results are the same, unless the profile configuration is intentionally altered. Profile selection and discovery are especially important when using BACnet or SNMP protocols. For normal operation, always use discovery mode.

The second selection in the GUI is Protocol_Mode, used to select the combination of protocols the product communicates with. The EM49xxE supports five protocols, some of which can operate simultaneously. The table below shows which protocols are supported in each mode.

Protocol

Mode

1

2

3

4

Primary

Protocol

BACnet MS/TP

BACnet IP

SNMP

Modbus

Ethernet

Protocol

Modbus TCP

RS-485

Protocol

BACnet MS/TP

BACnet IP/Modbus TCP Modbus RTU

SNMP/Modbus TCP

Modbus TCP

Modbus RTU

Modbus RTU

To select a primary protocol mode, enter the corresponding number into the text field adjacent to the Primary Protocol option and click the Submit button to the right of the text field. A prompt appears at the top of the screen instructing the user to restart the system. When finished, the screen refreshes itself with the appropriate fields for the selected mode.

The next GUI selection, in any protocol mode, is the Upstream_Baud rate selection. If you have selected BACnet MS/TP (mode 1) as the primary protocol mode, this value sets the MS/TP baud rate. If you have selected modes 2 or 3 as the primary protocol mode, you may not be using the RS-485 interface at all.

If so, this setting can be ignored.

If you have selected BACnet IP, SNMP or Modbus mode, the next selection is

Modbus_Address, which sets the Modbus address(es) for the EM49xxE when access with Modbus RTU with the RS-485 serial connection.

The next selection (in BACnet IP, SNMP or Modbus modes) is Modbus_Parity, which sets the parity of the upstream serial connection. If using Modbus RTU protocol, set this to match your Modbus master. If not, ignore this field.

The following sections show the field selections (with factory default values) specific to each of the four Protocol_Modes.


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1. BACnet MS/TP Mode



The first three options are discussed previously.

The DeviceID_Offset parameter is used to assign Device_IDs on power-up or on restart until they have been overwritten via BACnet. Enter your desired value here and click Submit . The new value is first used at the next power-up or system restart. Valid Device_ID numbers range from 1 to 4194303. Since the numbers assigned during discovery are the sum of the Offset and the Modbus address (which can be any value from 1 to 247), the Offset values entered in the GUI must be no larger than 4194057.

The EM49xxE gateway creates a BACnet virtual router and separate BACnet devices for each 42-channel meter panel behind this virtual router, allowing the devices to be discoverable and independently accessed via BACnet, even if the virtual router is connected by MS/TP, using a single MAC address. To use this product with MS/TP, the BACnet system must support the discovery and use of a BACnet router on the MS/TP trunk and any devices beyond it.

This virtual router creates an exclusive BACnet network on which the meter’s

BACnet devices reside. This network must have a BACnet network number that is different from any other networks in the entire BACnet enterprise. When multiple EM49xxE products are added anywhere in the enterprise, each one must have a unique network number. If an exclusive value in this field is not set, communication conflicts in the BACnet system may occur.

Enter a non-conflicting value here and click Submit . Valid network numbers range from 1 to 65534; if other values are entered, the network number defaults to 5. The new value is first used at the next power-up or system restart. If using an external BACnet router to connect the EM49xxE as an MS/TP device, it is recommended that the router also be restarted after the EM49xxE has completed discovery, when the network number is changed.

The next field for the BACnet MS/TP protocol mode is the MSTP_Max_Master, which allows this value to be set prior to using BACnet software to access the

28


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EM49xxE. The default value of 127 works regardless of the addresses the

MS/TP network uses, but selecting a lower value may optimize the network.

Do not set this value lower than the highest address on the network. To set this value via BACnet, write to the Max_Master property of the device object for the

EM49xxE’s virtual router.

The next field for the BACnet MS/TP protocol mode is the MSTP_MAC_Addr, which sets the MAC address for the virtual router. The EM49xxE panel(s) are devices on the internal BACnet network and are not directly addressable as

MAC addresses on the MS/TP network.

The final field for the BACnet MS/TP mode is RTC_Control, which selects which protocol (BACnet or Modbus) has write access to the RTC. If 0 (BACnet) is selected, the RTC is set using the BACnet Time Synchronization service. If

1 (Modbus) is selected, the RTC is set by writing to the appropriate Modbus registers.

2. BACnet IP Mode

29

BACnet IP mode uses the same DeviceID_Offset, Virt_Router_Net and RTC_

Control parameters described above for BACnet MS/TP mode. One additional parameter, BACnet_IP_Port, is used to set the UDP port. Most BACnet systems use the default port (47808 decimal, 0xBAC0 hex) that is recommended in the

BACnet standard as the only UDP port. Some large systems need to segment the enterprise and use more than one port. If so, enter the number of the port you need to use to access this device. BACnet IP mode does not use MSTP_

Max_Master or MSTP_MAC_Addr.


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3. SNMP Mode


BACnet IP mode adds another field called BBMD_Enable. See the section

BBMD Support for a full description of how to enable and use BBMD support.

SNMP mode uses four unique parameters. The SNMP_Community strings are used to control access to the device. The values entered here are also used in the MIB browser or SNMP access software to communicate with this device.

The Read_Community string is used to enable reading data. The

Write_Community string is used to enable writing data. The Trap_Community string is used to enable the receipt of event notifications.

The last parameter, SNMP_Notif_IP, is used to set the IP address of the client that will be used to receive SNMP event notifications, such as alarms.

Operating the EM49xxE

Restart the EM49xxE by using the button at the bottom of the GUI or by cycling the power. It takes about 30 seconds to initialize completely and be ready for external communication.

BACnet Network Management – Important Steps to Avoid Conflicts

BACnet configuration uses two default settings that may need to be changed, depending on the application.

1. Virtual router network ID number. Every logical network segment (IP subnet, MS/TP trunk, etc.) in an entire system must have a (16-bit) network

ID number that is unique from all other BACnet networks in the enterprise.

The BACnet network administrator assigns this network ID so that no two

ID numbers conflict (whether using BACnet/IP or MS/TP). Within each segment, every device is physically identified by the combination of its 8-bit

MAC address and the 16-bit network ID number.

To support multiple meter panels (Panel 1 and Panel 2 are separate) with a single gateway, the EM49xxE creates a virtual BACnet router that presents multiple BACnet devices using a single (its own) MS/TP MAC address.


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Each EM49xxE must have its own (internal) network ID, and it creates a device object for itself and one for each Modbus address discovered.

The factory default network address is 50 (decimal). If that number is already in use in the system, assign a unique address using the graphical user interface on the built-in web server. This requires an Ethernet connection to a web browser.See BACnet/IP Setup section for instructions on changing configuration settings using the GUI. Valid network numbers range from 1 to 65534; if other values are entered, the network number defaults to 5.

2. Device_ID Offset. Every BACnet device must have a BACnet Device_ID number that is unique throughout the entire enterprise. Since the EM49xxE presents every Modbus meter as a BACnet device, each connected meter that has a Modbus address must have a BACnet Device_ID.

By default, each device discovered receives a Device_ID number that is the sum of an offset value (default is 50000) and the Modbus address of the device. If these Device_ID numbers cause a conflict with existing devices in the system, or if the system includes multiple EM49xxx, change the

Device_ID numbers before connecting the EM49xxE to the system. This can be managed in one of two ways:

• Connect to the EM49xxE directly (offline from the system) with the devices (meters). After the EM49xxE discovers the devices and assigns their default ID numbers, the user can choose new Device_ID values and write these to each device using BACnet software.

Subsequent discoveries will not overwrite these values with defaults even if the EM49xxE is then set to Discovery mode.

• Use the GUI on the built-in web server to modify the offset value used to calculate default Device_IDs in the discovery process (this requires an Ethernet connection to a web browser; see the BACnet/IP Setup section for instructions on changing configuration settings using the

GUI). The EM49xxE retains this offset value and uses it to assign

Device_ID numbers every time power is cycled if the EM49xxE is in

Discovery mode. Valid Device_ID numbers range from 1 to 4194303.

Since the numbers assigned during discovery are the sum of the

Offset and the Modbus address (which can be any value from 1 to

247), any Offset values entered in the GUI must be less than 4194057.


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BACnet PICS (Protocol Implementation Conformance Statement)

Vendor Name: Schneider Electric

BACnet Vendor ID 335

Product Name: EM49xxE Series Multi-Circuit Meter

Product Model Number: <Model Number>

Product Description: Multi-Circuit Meter

Multi-Circuit Meter BACnet Protocol Version: Version 1 Revision 12

BACnet Standardized Device Profile (Annex L) – [Note: EM49xxE incorporates a gateway device]

• BACnet Application Specific Controller (B-ASC)

BACnet Interoperability Building Blocks Supported (Annex K):

• K.1.2 BIBB - Data Sharing - ReadProperty-B (DS-RP-B)

• K.1.4 BIBB - Data Sharing - ReadPropertyMultiple-B (DS-RPM-B)

• K.1.8 BIBB - Data Sharing - WriteProperty-B (DS-WP-B)

• K.1.10 BIBB - Data Sharing - WritePropertyMultiple-B (DS-WPM-B)

• K.1.12 BIBB - Data Sharing - COV-B (DS-COV-B)

• K.2.2 BIBB - Alarm and Event - Notification Internal-B (AE-N-I-B)

• K.2.5 BIBB - Alarm and Event - ACK-B (AE-ACK-B)

• K.2.11 BIBB - Alarm and Event - Information-B (AE-INFO-B)

• K.5.2 BIBB - Device Management - Dynamic Device Binding-B

(DM-DDB-B)

• K.5.4 BIBB - Device Management - Dynamic Object Binding-B

(DM-DOB-B)

• K.5.6 BIBB - Device Management - DeviceCommunicationControl-B

(DM-DCC-B)

• K.5.12 BIBB - Device Management - TimeSyncronization-B

(DM-TS-B)

• K.5.22 BIBB - Device Management - List Manipulation-B (DM-LM-B)

Standard Object Types Supported

• Device Object

• Analog Input

• Analog Output

• Analog Value

Unsupported Properties and Restrictions

• Does not support BACnet CreateObject

• Does not support BACnet DeleteObject

• Does not support any proprietary properties

• No proprietary properties exist

• No range restrictions exist

• Max_Master is writable

Data Link Layer Options:

• BACnet IP, (Annex J)

• MS/TP master (Clause 9), baud rate up to 76.8 kbps

Networking Options:

• BACnet/IP Broadcast Management Device (BBMD)

• Registrations by Foreign Devices

Character Sets Supported:

• ISO 10646 (UTF-8) / ANSI X3.4


32


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General BACnet Programming Information

The EM49xxE consists of a BACnet virtual router and one or two 42-channel branch circuit meters. The BACnet virtual router has its own device object and an internal BACnet network. The branch circuit monitors have their own device objects that are logical devices on the network internal to (beneath) the virtual router. It is critical that the network number of the virtual router’s internal network be different than any other network number in your entire BACnet system. The network number is set to 50 at the factory, but can be changed in the GUI or by writing to the Present_Value of the AV2 data object associated with that device. Changes to the network number do not take effect until the

EM49xxE is re-started, either from the GUI or by cycling the power.

The default Device ID of the virtual router is the Device_Offset parameter, which is set to 5000 at the factory, but can be changed in the GUI or by writing to

Present_Value of the AV1 data object associated with that device. Changes to the network number do not take affect until the EM49xxE is re-started, either from the GUI or by cycling the power. The default Device IDs are numbered to consecutively follow the Device ID of the virtual router (e.g. if the Device_Offset parameter is 50000, the virtual router has a Device_ID of 50000, the branch circuit monitor called Panel 1 has a Device_ID of 50001 and the branch circuit monitor called Panel 2 (if present) has a Device_ID of 50002.

All Device_IDs are writable. Once a device’s Object_Identifier is overwritten, changes to the ID Offset no longer affect that Object_Identifier, even in

Discovery mode. Make further changes to the value by writing the

Object_Identifier property.

The default Object_Name property value of each device object is an abbreviated name of the meter series discovered with an underscore and the

Modbus address of the meter appended to it. The Object_Name is a writable property. Once a device’s Object_Name is overwritten, the Object_Name does not revert to the initial default, even in Discovery mode. Make further changes to the value by writing the Object_name property.

The EM49xxE supports Subscribe_COV, with default COV increment values assigned as shown in the data object tables. If these values are not appropriate for a specific application, write them as needed when they are subscribed. On subsequent power cycles, no subscriptions are active and the COV increments return to their default values.

With few exceptions, any data values written to AV objects are accepted

(without error) by the data object and passed through to the corresponding

Modbus register. There is no direct indication via the BACnet protocol if invalid values are rejected. After an invalid value is written to the Present_Value of an

AV, subsequent reads of that property return the new (invalid) value until the next time the EM49xxE refreshes its data (this may take several seconds).

BBMD Support

When the EM49xxE is in BACnet IP mode, it can be configured as a BACnet

Broadcast Management Device (BBMD) by entering “BBMD” in the Enable

BBMD Support field in the GUI, adding devices to a comma separated value text file named bdt.ini, and loading it onto the device. The example below shows the syntax required for the bdt.ini file. All lines beginning with two forward slashes are interpreted as comments. Use exactly one line per device added, separated by commas (no spaces). The file must include an entry (line) for each BBMD device in the BACnet enterprise, including the EM49xxE itself.

Note: The default gateway address in the network setup must be correct for

BBMD support to operate correctly. Once edited, upload the btd.ini file to the gateway through the GUI. Click the Diagnostics and Debugging button in the lower right corner of the GUI and follow the folder tree under Navigation to the following folder: “Schneider Electric BCPM Virtual Router/Setup/File Transfer.”

Select the General tab (this is important; using the wrong tab can overwrite


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07/2017 EM49xxx Series Multi-Circuit Meters critical files). Click the Browse button and select your bdt.ini file. Then click

Submit . The GUI quickly indicates “The file was updated successfully.” Click the System Restart button, and OK on the confirmation dialog and wait for the gateway to reinitialize. This takes about 30 seconds. BBMD changes are made by uploading a new btd.ini file. After setting the GUI to enable BBMD support and transferring a new or revised bdt.ini file, restart the EM49xxE to load the file. BBMD support can be disabled in the GUI by entering “ ” (a hyphen) in the

Enable BBMD Support field in the GUI.

// Bdt.ini

// The format of this table must be (without the forward slashes - they are comment indicators):

//

//BBMD IP_Address , BBMD port , BBMD subnet Mask

//

147.26.116.217,47808,255.255.255.255

172.16.17.198,47808,255.255.255.255

General SNMP Programming Information

The EM49xxE can be configured to support the SNMP V2c protocol over

Ethernet. The SNMP community string and the IP address for the client receiving SNMP V2c event notifications can be set via the GUI. MIB files are available for download from the BCPM Downloads and Documents page at www.schneider-electric.com to enable accessing the BCPM from an MIB browser.

The EM49xxE OID structure organizes the data under two “panels” representing the two breaker panels that can be monitored by a fully populated

EM49xxE. Panel 1 corresponds to the branch current sensor strips connected to the “Panel 1A” and “Panel 1B” connectors and to the data set under

Modbus address 1 or BACnet device identified as Node_1 in the GUI. Panel 2 corresponds to the branch current sensor strips connected to the “Panel 2A” and “Panel 2B” connectors and to the data set under Modbus address 2 or

BACnet device identified as Node_2 in the GUI.

For each panel, data is arranged under six tree branches.

• The Configuration branch contains all writable configuration parameters.

• The Alarms branch contains all the alarm notification traps, the global alarm status registers and counters and tables of the alarm status indicators.

• The Voltage Inputs branch contains all data measurements pertaining to the voltage inputs.

• The Auxiliary Inputs branch contains all data measurements pertaining to the aux inputs other than voltage-related.

• The Branch Inputs branch contains all data measurements to the branch inputs in table format.

• The Flex Circuits branch contains all data measurements to the logical meter summaries in table format.


34


Commissioning

Recommended Accessories

Z207311-0A

07/2017

Part ID

BCPMCOVERS

CBL008

CBL016

CBL017

CBL018

CBL019

CBL020

CBL021

CBL022

CBL023

CBL024

CBL025

CBL026

CBL027

CBL031

CBL032

DANGER





1. Reconnect power to the panel.

2. Configure installation mode using Modbus Register 6.

3. Configure CT scaling.

4. Configure alarms.

5. Configure demand.

Use ION Setup to configure the EM49xxx. ION Setup is a meter configuration software you can download from https://schneider-electric.box.com/ionsetuplatest.

NOTE: Install the latest build in order to get the most up-to-date information, feature and device support for ION Setup.

To learn how to add and configure sites and meters, refer to the ION Setup online help by clicking the Help button or pressing F1 on your keyboard.

Description

BCPM MCB Cover

Flat ribbon cable, 50 x 28 AWG, 1.5 ft. (0.45 m)

Flat ribbon cable, 50 x 28 AWG, 4 ft. (1.2 m)






Round ribbon cable, 50 x 28 AWG, 4 ft. (1.2 m)

Round ribbon cable, 50 x 28 AWG, 10 ft. (3 m)

Round ribbon cable, 50 x 28 AWG, 20 ft. (6 m)

Flat ribbon cable, 50 x 28 AWG, 2 m



Round ribbon cable, 50 x 28 AWG, 1.5 ft. (0.45 m)

Round ribbon cable, 50 x 28 AWG, 2.5 ft. (0.76 m)


Z207311-0A

07/2017

Troubleshooting


Problem

Product is not communicating over

Modbus daisy chain

RX LED is solid

(EM49xxA models)

Solution

• Check the unit Modbus address to ensure that each device on the daisy chain has a unique address.

• Check parity.

• Check the communications wiring.

• Check that the daisy chain is properly terminated.

• Check for reversed polarity on Modbus comms.

• Check for sufficient biasing on the Modbus bus. Modbus physical specification calls for 450-650 Ω biasing. This is usually provided by the master.

• One or more channels is clipping. This can be caused by a signal greater than the split-core size or 277 V L-N, or by a signal with high

THD near the gain stage switching points (1.5 A and 10 A).

• Everything is wired properly and the main board has power.

The main board has a slow flashing amber light

(EM49xxA models)

The main board has a flashing green light

(EM49xxA models)

The main board has a flashing or solid red light

(EM49xxA models)

Power factor reading is not as expected

Current is reading zero, even when small currents are still flowing through circuit

Non-zero current or power readings are showing on one or more unused channels.

• Light may be red briefly while device powers up.

• If light is red for more the 60 sec. device has encountered a diagnostic event. Contact technical support.

• Verify voltage taps are connected in appropriate phase rotation.

• Verify phase rotation of breakers (firmware rev. 1.012 or higher allows for custom rotation if needed).

• The product cuts off measurements if the current on any input is less than 0.1% of the full range current setting used for any CT, and will set the reporting register to 0 mA for currents near or below this range.

• The CT range setting of any channel that does not have a CT actually connected should be set to zero. Channels without CTs connected will pick up noise that can cause non-zero readings if the range is not zero. When CTs are properly connected, the impedance of the CT itself will absorb spurious noise at the proper range setting.

China RoHS Compliance Information - Environment Friendly Use Period (EFUP) Table

部件名称

Part Name

铅

(Pb) 汞 (Hg)

镉

(Cd)

有害物质

-

六价铬

Hazardous Substances

(Cr (VI)) 多溴联苯

(PBB)

电子件

Electronic

X O O O O

本表格依据

SJ/T11364

的规定编制。

O:

表示该有害物质在该部件所有均质材料中的含量均在

GB/T 26572

规定的限量要求以下。

X:

表示该有害物质至少在该部件的某一均质材料中的含量超出

GB/T 26572

规定的限量要求。

（企业可在此处，根据实际情况对上表中打的技术原因进行进一步说明。）

多溴二苯醚

(PBDE)

O

This table is made according to SJ/T 11364.

O: indicates that the concentration of hazardous substance in all of the homogeneous materials for this part is below the limit as stipulated in GB/T 26572.

X: indicates that concentration of hazardous substance in at least one of the homogeneous materials used for this part is above the limit as stipulated in GB/T 26572

Z000057-0B


36

Schneider Electric

35, rue Joseph Monier

CS 30323

F - 92506 Rueil Malmaison Cedex www.schneider-electric.com

As standards, specifications, and designs change from time to time, please ask for confirmation of the information given in this publication.

© 2017 Schneider Electric. All Rights Reserved.

Z207311-0A 07/2017

DR

AF

T

Schneider Electric PowerLogic EM4900 Power Meters User Guide

EM49xxx Series Multi-Circuit Meters

User Guide

Z207311-0A

07/2017

www.schneider-electric.com

Legal Information

Safety Information

Important information

DANGER indicates an hazardous situation which, if not avoided, 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 is used to address practices not related to physical injury.

Please note

Safety Precautions

WARNING

FCC Notice

Contents

Specifications

Introduction

Parts of the EM49xxx

Dimensions

Data Outputs

Blink Codes for Status LED (EM49xxA Models Only)

Installation

Strip Length

Indicator

Locations

Wiring

Configuration

B

ø

B1 Off/

On

Parity

Odd/

Even

Parity

2/4

Wire

Reserved

1 2 3 4 5 6 7 8

DIP Switch Values

LSB

=

MSB

Default DIP Switch Settings

Address Selection

Gateway Configuration

Accessing the Graphical User Interface (GUI)

Using the Toolbox to Set Up the IP Address for Use on Your Network

Using the GUI to Set Up the IP Address for Use on Your Network

Using the GUI to Set the Configuration Parameters for the Communication Protocols

1. BACnet MS/TP Mode

2. BACnet IP Mode

3. SNMP Mode

Operating the EM49xxE

BACnet Network Management – Important Steps to Avoid Conflicts

BACnet PICS (Protocol Implementation Conformance Statement)

General BACnet Programming Information

BBMD Support

General SNMP Programming Information

Commissioning

Recommended Accessories

Troubleshooting

China RoHS Compliance Information - Environment Friendly Use Period (EFUP) Table

部件名称

Part Name

铅

(Pb) 汞 (Hg)

镉

(Cd)

有害物 质

六价 铬

Hazardous Substances

(Cr (VI)) 多溴 联苯

(PBB)

电子件

有害物质

六价铬

(Cr (VI)) 多溴联苯

的规定编制。

表示该有害物质在该部件所有均质材料中的含量均在

表示该有害物质至少在该部件的某一均质材料中的含量超出

（企业可在此处，根据实际情况对上表中打的技术原因进行进一步说明。）

多溴二苯醚