Emerson Energy Meter Operation Manual

Energy Meter Installation and
Operation Manual

026-1726 Rev 2

Emerson Digital Solutions

1065 Big Shanty Road NW, Suite 100

Kennesaw, GA 30144 USA

770-425-2724 • 1-800-829-2724

www.climate.emerson.com

Email: [e-mail]

Contents

1 INTRODUCTION.......................................................................................................................................................... 1

1.1 S

PECIFICATIONS............................................................................................................................................................. 2

1.2 N

OTICE .......................................................................................................................................................................... 3

1.2.1 FCC Part 15 Information ...................................................................................................................................... 3

2 OVERVIEW ................................................................................................................................................................... 4

2.1 D

IMENSIONS .................................................................................................................................................................. 4

2.2 P

RODUCT DIAGRAM ...................................................................................................................................................... 4

3 INSTALLATION ........................................................................................................................................................... 5

3.1 T

YPES OF MOUNTING .................................................................................................................................................... 5

3.1.1 DIN Rail Mounting................................................................................................................................................. 5

3.1.2 Screw Mounting ..................................................................................................................................................... 5

3.2 S

UPPORTED SYSTEM TYPES........................................................................................................................................... 5

4 WIRING.......................................................................................................................................................................... 7

4.1 W

IRING DIAGRAMS ...................................................................................................................................................... 7

4.2 C

ONTROL POWER .......................................................................................................................................................... 9

4.2.1 Fuse Recommendations.......................................................................................................................................... 9

4.3 W

IRING CONNECTION TO SITE SUPERVISOR ............................................................................................................... 10

4.4 W

IRING CONNECTION TO E2....................................................................................................................................... 11

5 DISPLAY SCREEN DIAGRAM................................................................................................................................ 12

5.1 LCD S

5.2 B

CREEN .............................................................................................................................................................. 12

UTTONS ..................................................................................................................................................................... 12

6 NETWORK SETUP AND COMMISSIONING ....................................................................................................... 13

6.1 S

ET UP NETWORK PORTS ............................................................................................................................................ 13

6.2 A

DDING AN ENERGY METER....................................................................................................................................... 14

6.3 RS-485 C

OMMUNICATIONS ......................................................................................................................................... 15

6.3.1 Daisy-chaining Devices to the Energy Meter ...................................................................................................... 15

7 QUICK SETUP INSTRUCTIONS............................................................................................................................. 17

8 SOLID-STATE PULSE OUTPUT ............................................................................................................................. 18

8.1 S

ET PULSE ................................................................................................................................................................... 18

8.2 S

ET PULSE ENERGY – WH/P ....................................................................................................................................... 18

8.3 M

INIMUM DURATION TIME – MILLISECONDS PER PULSE (MS/P)............................................................................... 18

8.4 M

ULTIFLEX I/O BOARD PULSE LIMITS - STANDALONE VERSION ONLY.................................................................... 19

9 UI MENU ABBREVIATIONS ................................................................................................................................... 20

10 USER INTERFACE FOR DATA CONFIGURATION ...................................................................................... 21

11 ALERT/RESET INFORMATION........................................................................................................................... 22

12 USER INTERFACE FOR SETUP ......................................................................................................................... 23

13 ENERGY METER STANDARD MODBUS DEFAULT SETTINGS ................................................................. 25

14 TROUBLESHOOTING ............................................................................................................................................ 26

APPENDIX OF COMPATIBLE CURRENT TRANSDUCERS ................................................................................. 27

Contents • v

1 Introduction

The Energy Meter (P/N 250-5000) provides a solution for
measuring energy data with a single device. Inputs include
Control Power, CT, and 3-phase voltage. The Energy
Meter supports multiple output options, including solid
state relay contacts, Modbus, and pulse. The LCD screen
on the faceplate allows instant output viewing.

The meter is housed in a plastic enclosure suitable for
installation on T35 DIN rail according to EN50022. The
Energy Meter can be mounted with any orientation over
the entire ambient temperature range, either on a DIN rail
or in a panel. The meter is not sensitive to CT orientation
to reduce installation errors.

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. Consider the enclosure, the correct use of
ventilation, thermal properties of the equipment, and the
relationship with the environment. Installation category:
CAT II or CAT III.

Provide a disconnect device to disconnect the Energy
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 over-current protection and
disconnecting device for supply conductors with approved
current limiting devices suitable for protecting the wiring.
If the equipment is used in a manner not specified by the
manufacturer, the protection provided by the device may
be impaired.

WARNING! 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 qualified 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.

• Any covers that may be displaced during the
installation must be reinstalled before powering
the unit.

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

DO NOT DEPEND ON THIS PRODUCT FOR
VOLTAGE INDICATION.

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

Introduction • 1

1.1 Specifications

Measurement Accuracy

Real Power and
Energy

Reactive Power
and Energy

Current

Voltage

Sample Rate 2520 samples per second

Data Update Rate 1 sec

Type of
Measurement

Input Voltage Characteristics

Measured AC
Voltage

Metering Over­Range

Impedance

Frequency Range 45 to 65 Hz

Input Current Characteristics

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

Measurement Input
Range

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

Control Power

AC

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

Ride Through Time 100 msec at 120VAC

Output

Alarm Contacts
(all models)

Table 1-1 - Energy Meter Specifications

IEC 62053-22 Class 0.5S, ANSI C12.20

0.5%

IEC 62053-23 Class 2, 2%

0.4% (+0.015% per °C deviation from
25°C) from 5% to 100% of range;

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

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

to 600VAC

L-L

L-L

True RMS up to the 21st harmonic 60 Hz
One to three phase AC system

Minimum 90V

L-N

(156V

) for stated

L-L

accuracy;
UL Maximums: 600V

CE Maximums: 300V

L-L

L-N

(347V
(520V

L-N

L-L

)
)

+20%

2.5 MΩ

L-N

/5 MΩ

L-L

0 to 0.333VAC or 0 to 1.0VAC (+20% over­range)

5VA max.; 90V min.
UL Maximums: 600V

CE Maximums: 300V

L-L

L-N

(347V
(520V

L-N

L-L

)
)

N.C., static output
(30VAC/DC, 100mA max. @ 25°C,
derate 0.56mA per °C above 25°C)

Real Energy Pulse
Contacts (all

N.O., static output

models) AND

Reactive Energy
Pulse Contacts

(30VAC/DC, 100mA max. @ 25°C,
derate 0.56mA per °C above 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

IP40 front display; IP20 Meter

60529)

Display
Characteristics

Terminal Block
Screw Torque

Terminal Block
Wire Size

Back-lit blue LCD

0.37 ft-lb (0.5 N.m) nominal/0.44 ft-lb (0.6
N.m) max.

2

26 to 14 AWG (0.13 to 2.08 mm

)

Rail T35 (35mm) DIN Rail per EN50022

Environmental Conditions

Operating
Temperature

Storage
Temperature

-30°C to 70°C (86°F to 158°F)

-40°C to 85°C (-40°F to 185°F)

Humidity Range <95% RH (non-condensing)

Altitude of
Operation

3 km max.

Metering Category

US and Canada

CE

Dielectric
Withstand

Conducted and
Radiated Emissions

Conducted and
Radiated Immunity

CAT III; for distribution systems up to
347 V

/600VAC

L-N

L-L

CAT III; for distribution systems up to
300 V

/480VAC

L-N

L-L

Per UL 508, EN61010

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

Table 1-1 - Energy Meter Specifications

*External DC current limiting is required,
see Section 4.2.1, Fuse Recommendations.

2 • Energy Meter Installation and Operation Manual 026-1726 Rev 2

1.2 Notice

• This product is not intended for life or safety applications.

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

• The installer is responsible for conformance to all applicable codes.

• Mount this product inside a suitable fire and electrical enclosure.

1.2.1 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. Modifications to this product without the express authorization of
Emerson nullify this statement.

Notice Introduction • 3

2 Overview

2.1 Dimensions 2.2 Product Diagram

Figure 2-1 - Energy Meter Dimensions

Figure 2-2 - Bottom View (DIN Mount Option)

Figure 2-4 - Energy Meter Interface

Figure 2-5 - Four Output Options

Figure 2-3 - Bottom View (Screw Mount Option)

4 • Energy Meter Installation and Operation Manual 026-1726 Rev 2

3 Installation

WARNING! Disconnect power prior to
installation.

Any covers that may be displaced during the
installation must be reinstalled before powering the
unit.

Mount the Energy Meter in an appropriate electrical
enclosure near equipment to be monitored.

Exposure to VFD harmonics may cause permanent
damage to this device.

3.1 Types of Mounting

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

3.1.1 DIN Rail Mounting

2. Use three #8 screws (not supplied) to mount the
Energy Meter to the inside of the enclosure. See
diagram of the underside of the Energy Meter
(below).

Figure 3-2 - Screw Mounting

1. Attach mounting clips to the underside of the
Energy Meter by sliding them into the slots from
the inside. The outside edge of the clip must be
flush with the outside edge of the Energy Meter.

2. Snap the clips onto the DIN rail. See diagram of
the underside of the Energy Meter (below).

Figure 3-1

- DIN Rail Mounting

3. To prevent horizontal shifting across the DIN
rail, use two AV02 end stop clips.

3.1.2 Screw Mounting

3.2 Supported System
Types

The Energy Meter Series has a number of different
possible system wiring configurations (see Section 4,
Wiring). To configure the meter, set the System Type via
the User Interface or Modbus register 130 (if so equipped).
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
configured 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).

1. Attach the mounting clips to the underside of the
Energy Meter by sliding them into the slots from
the outside. The screw hole must be exposed on
the outside of the housing.

Types of Mounting Installation • 5

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

CTs Voltage Connections System Type Phase Loss Measurements

Number
of wires

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,C 3 A,B,C Delta 31 3L

4 3 A,B,C 4 A,B,C,N

Qty ID Qty ID Type

Grounded
Wye

Modbus
Register
130

40 3L+1n

User
Interface:
SETUP>S
SYS

VLL VLN Balance

AB, BC,
CA

AB, BC, CAAN, BN,

CN

AB-BC-CA 4

AN-BN-CN
&
AB-BC-CA

Table 3-1 - System Types

Wiring

Diagram

Diagram
number

5, 6

6 • Energy Meter Installation and Operation Manual 026-1726 Rev 2