Emerson Energy Meter User 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: [email protected]

Contents • v
Contents
1 INTRODUCTION.......................................................................................................................................................... 1
1.1 SPECIFICATIONS............................................................................................................................................................. 2
1.2 NOTICE .......................................................................................................................................................................... 3
1.2.1 FCC Part 15 Information ...................................................................................................................................... 3
2 OVERVIEW ................................................................................................................................................................... 4
2.1 DIMENSIONS .................................................................................................................................................................. 4
2.2 PRODUCT DIAGRAM ...................................................................................................................................................... 4
3 INSTALLATION ........................................................................................................................................................... 5
3.1 TYPES OF MOUNTING .................................................................................................................................................... 5
3.1.1 DIN Rail Mounting................................................................................................................................................. 5
3.1.2 Screw Mounting ..................................................................................................................................................... 5
3.2 SUPPORTED SYSTEM TYPES........................................................................................................................................... 5
4 WIRING.......................................................................................................................................................................... 7
4.1 WIRING DIAGRAMS ...................................................................................................................................................... 7
4.2 CONTROL POWER .......................................................................................................................................................... 9
4.2.1 Fuse Recommendations.......................................................................................................................................... 9
4.3 WIRING CONNECTION TO SITE SUPERVISOR ............................................................................................................... 10
4.4 WIRING CONNECTION TO E2....................................................................................................................................... 11
5 DISPLAY SCREEN DIAGRAM................................................................................................................................ 12
5.1 LCD SCREEN .............................................................................................................................................................. 12
5.2 BUTTONS ..................................................................................................................................................................... 12
6 NETWORK SETUP AND COMMISSIONING ....................................................................................................... 13
6.1 SET UP NETWORK PORTS ............................................................................................................................................ 13
6.2 ADDING AN ENERGY METER....................................................................................................................................... 14
6.3 RS-485 COMMUNICATIONS ......................................................................................................................................... 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 SET PULSE ................................................................................................................................................................... 18
8.2 SET PULSE ENERGY – WH/P ....................................................................................................................................... 18
8.3 MINIMUM DURATION TIME – MILLISECONDS PER PULSE (MS/P)............................................................................... 18
8.4 MULTIFLEX 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

Introduction • 1
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.

2 • Energy Meter Installation and Operation Manual 026-1726 Rev 2
1.1 Specifications
*External DC current limiting is required,
see Section 4.2.1, Fuse Recommendations.
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 100% of range;
0.8% (+0.015% per °C deviation from
25°C) from 1% to 5% of range
Voltage 0.4% (+0.015% per °C deviation from
25°C) from 90V L-L to 600VAC L-L
Sample Rate 2520 samples per second
Data Update Rate 1 sec
Type of
Measurement
True RMS up to the 21st harmonic 60 Hz
One to three phase AC system
Input Voltage Characteristics
Measured AC
Voltage
Minimum 90VL-N (156VL-L ) for stated
accuracy;
UL Maximums: 600VL-L (347VL-N)
CE Maximums: 300VL-N (520VL-L)
Metering Over-
Range +20%
Impedance 2.5 MΩ L-N /5 MΩ L-L
Frequency Range 45 to 65 Hz
Input Current Characteristics
CT Scaling Primary: Adjustable from 5A to 32,000A
Measurement Input
Range
0 to 0.333VAC or 0 to 1.0VAC (+20% over-
range)
Impedance 10.6kΩ (1/3 V mode) or 32.1kΩ (1 V mode)
Control Power
AC
5VA max.; 90V min.
UL Maximums: 600VL-L (347VL-N)
CE Maximums: 300VL-N (520VL-L)
DC* 3W max.; UL and CE: 125 to 300VDC
Ride Through Time 100 msec at 120VAC
Output
Alarm Contacts
(all models)
N.C., static output
(30VAC/DC, 100mA max. @ 25°C,
derate 0.56mA per °C above 25°C)
Table 1-1 - Energy Meter Specifications
Real Energy Pulse
Contacts (all
models) AND
N.O., static output
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
60529)
IP40 front display; IP20 Meter
Display
Characteristics Back-lit blue LCD
Terminal Block
Screw Torque
0.37 ft-lb (0.5 N.m) nominal/0.44 ft-lb (0.6
N.m) max.
Terminal Block
Wire Size 26 to 14 AWG (0.13 to 2.08 mm2)
Rail T35 (35mm) DIN Rail per EN50022
Environmental Conditions
Operating
Temperature -30°C to 70°C (86°F to 158°F)
Storage
Temperature -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 CAT III; for distribution systems up to
347 V L-N /600VAC L-L
CE CAT III; for distribution systems up to
300 V L-N /480VAC L-L
Dielectric
Withstand Per UL 508, EN61010
Conducted and
Radiated Emissions
FCC part 15 Class B, EN55011/EN61000
Class B
(residential and light industrial)
Conducted and
Radiated Immunity 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

Notice Introduction • 3
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.

4 • Energy Meter Installation and Operation Manual 026-1726 Rev 2
2 Overview
2.1 Dimensions 2.2 Product Diagram
Figure 2-1 - Energy Meter Dimensions
Figure 2-2 - Bottom View (DIN Mount Option)
Figure 2-3 - Bottom View (Screw Mount Option)
Figure 2-4 - Energy Meter Interface
Figure 2-5 - Four Output Options

Types of Mounting Installation • 5
3 Installation
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
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).
3. To prevent horizontal shifting across the DIN
rail, use two AV02 end stop clips.
3.1.2 Screw Mounting
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.
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).
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).
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.
Figure 3-1 - DIN Rail Mounting
Figure 3-2 - Screw Mounting

6 • Energy Meter Installation and Operation Manual 026-1726 Rev 2
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 Wiring
Diagram
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,C 3 A,B,C Delta 31 3L AB, BC,
CA AB-BC-CA 4
4 3 A,B,C 4 A,B,C,N Grounded
Wye 40 3L+1n AB, BC,
CA
AN, BN,
CN
AN-BN-CN
&
AB-BC-CA
5, 6
Table 3-1 - System Types

Wiring Diagrams Wiring • 7
4 Wiring
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.
4.1 Wiring Diagrams
Symbol Description
Voltage Disconnect Switch
Fuse (installer is responsible for
ensuring compliance with
local requirements. No fuses are
included with the Energy Meter.)
Earth ground
Current Transducer
Potential Transformer
Protection 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.
Table 4-1 -Diagram Symbols
WARNING! This product is designed only for
use with 1V or 0.33V current transformers
(CTs).
DO NOT USE CURRENT OUTPUT
(For example, 5A) CTs ON THIS PRODUCT.
Failure to follow these instructions can result in
overheating and permanent equipment damage.
Figure 4-1 - 1-Phase Line-to-Neutral 2- Wire System 1 CT
Figure 4-2 - 1-Phase Line-to-Line 2-Wire System 1 CT

8 • Energy Meter Installation and Operation Manual 026-1726 Rev 2
Figure 4-3 - 1-Phase Direct Voltage Connection 2 CT
Figure 4-4 - 3-Phase 3-Wire 3 CT no PT
WARNING! CTs are referenced to the meter’s
neutral (N).
Figure 4-5 - 3-Phase 4-Wire Wye Direct Voltage Input
Connection 3 CT
Figure 4-6 - 3-Phase 4-Wire Wye Connection 3 CT 3 PT

Control Power Wiring • 9
4.2 Control Power
4.2.1 Fuse Recommendations
Keep the fuses close to the power source (obey local and
national code requirements).
For selecting fuses and circuit breakers, use the following
criteria:
• Current interrupt capacity should be selected based
on the installation category and fault current
capability.
• Over-current protection should be selected with a
time delay.
• The voltage rating should be sufficient for the input
voltage applied.
• Provide over-current protection and disconnecting
devices appropriate for the wiring.
• The earth connection is required for
electromagnetic compatibility (EMC) and is not a
protective earth ground.
Figure 4-7 - Direct Connect Control Power (Phase to Phase)
Figure 4-8 - Direct Connect Control Power (Phase to Neutral)
Figure 4-9 - Control Power Transformer (CPT) Connection
Figure 4-10 - Control Power Transformer (CPT) Connection

10 • Energy Meter Installation and Operation Manual 026-1726 Rev 2
4.3 Wiring Connection to Site Supervisor
Figure 4-11 - Site Supervisor Wiring

Wiring Connection to E2 Wiring • 11
4.4 Wiring Connection to E2
Connect the network cable to the three-terminal connector on the COM port that has been configured for the
Energy Meter. The Energy Meter polarity markings are the inverse of E2; connect the Energy Meter +Data wire
to the E2 RS485 - terminal and connect the Energy Meter -Data wire to the E2 RS485 + terminal. The shield
cable should be connected to the right most terminal.
When the E2 is at one end of the daisy chain, terminate the E2 with all three jumpers in the terminated (UP)
position.
Figure 4-12 - E2 MODBUS connection
RS485 MODBUS
CONNECTORS
E2 Power Interface
Board (PIB)
+485
-485
0V
ECT MODBUS
CONNECTOR on the
Energy Meter
BLACK
WHITE SHIELD
+485 -4850V
WHITE
BLACK
SHIELD
+ - S
REVERSE POLARITY
Energy Meter +Data to the E2 RS485 -
Energy Meter -Data to the E2 RS485 +

12 • Energy Meter Installation and Operation Manual 026-1726 Rev 2
5 Display Screen Diagram
5.1 LCD Screen
5.2 Buttons
Figure 5-1 - Energy Meter Screen
Figure 5-2 - Energy Meter Buttons

Set Up Network Ports Network Setup and Commissioning • 13
6 Network Setup and Commissioning
Connecting an Energy Meter to an E2 requires the E2 to
be version 3.0 or above. Contact Emerson for upgrade
information if the controller is a version before 3.0.
An E2 has up to three COM ports that can be assigned for
MODBUS communication: COM2, an RS485 port on the
E2 power interface board, and COM4 and COM6, which
are optional ports requiring expansion cards.
COM ports can only be used for one function; in other
words, if COM2 is set up as the I/O network, you
cannot connect MODBUS devices to COM2. Ensure your
E2 is equipped with an RS485 COM Card (P/N 637-4890)
and configured in E2 General Services (731, Serial tab) to
enable COM4 or an E2 Expansion COM Card
(P/N 637-4871) to enable COM6.
Connect the MODBUS network cable to the
three-terminal connector on the COM port you wish to
assign as MODBUS. Reverse polarity of +/- on RS485
cable from E2 to device.
6.1 Set Up Network Ports
Before communicating to an Energy Meter, the port on the
E2 that has the cable connected to the Energy Meter must
be configured to use the Energy Meter.
1. Log in to the E2 with Level 4 access.
2. Press ( followed by 731 - General Controller
Info.
3. Press c+3 to open the Serial tab of the General
Controller Info setup screens:
4. This screen will have a “Connection” field for all
COM ports on the E2. Highlight the COM port
connection field that will be used for MODBUS,
and press $ - LOOK UP. From the list of
network types, select MODBUS (1-3).
5. Four fields will become visible underneath the
COM port connection field, which pertain to the
way the device communicates:
6. Baud - Default setting is 19.2k. The baud rate
setting should be set to match the baud rate dip
switch settings of all Energy Meter devices. (All
devices connected to the same COM port should
be set to the same baud rate.)
Figure 6-1 - Location of E2 COM Ports
E2 PIB COM PORT ASSOCIATIONS
COM1
COM4
COM6
COM2
Serial Device
RS485 COM Port
(2 Connectors)
RS485 COM Card
(2 Connectors) Serial Device
RS232 Port
POWER INTERFACE BOARD
(PIB)
E2 Modem/Expansion
COM Card Mounted
Above PIB
Plug-In
Modem
Card
COM3
E2 Enclosure (Right Side)
RS485
RS232
Figure 6-2 - Serial Communications Manager Screen

14 • Energy Meter Installation and Operation Manual 026-1726 Rev 2
•Data Size - Leave this field at the default value (8).
•Parity - Leave this field at the default value (None).
The parity settings should be set to match the parity
dip switch settings of all Energy Meter devices.
Refer to Table 2.
•Stop Bits - Leave this field at the default value (1).
7. Press ) to save changes and exit.
6.2 Adding an Energy
Meter
To enable communications between E2 and the Energy
Meter units, the devices must be added and addressed in
E2.
1. Log in to the E2 with Level 4 access.
2. Press (772 - Connected I/O Boards and
Controllers.
3. In the Connected I/O screen, under the ECT tab,
Enter the number of devices in the Energy Meter
number field.
4. Press ) to return to the Network Setup menu, then
select 1 - Network Summary.
5. Locate the Energy Meter units you added to the
network list (press k and j to scroll through the
list). The default name for an Energy Meter
increments up starting with Energy001. The two
and three-letter designator does not apply here.
6.
7. By default, each Energy Meter’s board number in
the network list is indicated by a - (dash). To set
the address and begin communication, press $ to
Commission. (If you have more than one
MODBUS network, specify which network you
want the device to belong to.) A screen will open
that will allow you set the address:
8. In the list of MODBUS devices, choose the
address number corresponding to the Energy
Meter’s dip switch/jumper setting, and press e to
select it. If a network ID has already been
selected, its name will be shown next to the
network ID in this list. If the network ID you are
trying to assign has already been used, you must
set the network ID dip switch/jumper on this
device to a different number that is not being
used.
Figure 6-3 - Connected I/O Screen
Figure 6-4 - Network Summary Screen
Figure 6-5 - Set the Address of the Energy Meter

RS-485 Communications Network Setup and Commissioning • 15
9. Repeat Steps 5 and 6 until each Energy Meter
device has been commissioned.
10. When finished, press ) to return to the Network
Setup menu, then press 1 - Network Summary
(Figure 6-4). Locate the Energy Meters you set
up, and look at each device’s status in the Status
field. You will see one of the following
messages:
11. Online - The Energy Meter is communicating
normally.
12. Offline - The Energy Meter is not
communicating, has not been commissioned, is
not functional, or is not powered up. Verify the
Energy Meter is powered up, wired correctly, and
has the proper network
address, baud rate, and parity.
13. Unknown - The Energy Meter is not
communicating or has not been commissioned.
Verify the Energy Meter is powered up, wired
correctly, and has the proper network address,
baud rate, and parity.
14. No Port - No port is set up in the E2 Serial
Configuration Manager to be a MODBUS port.
15. Wrong FW Rev - This message is likely caused
by the Energy Meter having a firmware version
older than the minimum revision required by E2
for
communication. Replace the Energy Meter with a
new controller that has the latest version of
firmware.
6.3 RS-485
Communications
6.3.1 Daisy-chaining Devices to
the Energy Meter
The RS-485 slave port allows the Energy Meter to be
connected in a daisy chain with up to 63 two-wire
devices. In this manual, communications link refers to
a chain of devices that are connected by a
communications cable.
NOTES:
• The Energy Meter polarity markings are the inverse
of E2; connect the Energy Meter +Data wire to the
E2 RS485 - terminal and connect the Energy Meter
-Data wire to the E2 RS485 + terminal. The shield
cable should be connected to the right most
terminal.
• The terminal’s voltage and current ratings are
compliant with the requirements of the EIA RS-485
communications standard.
Figure 6-6 - List of MODBUS Devices Figure 6-7 - Network Summary Screen
Figure 6-8 - Energy Meter Daisy Chain
E2
MODBUS
device
#1 #3
REVERSE POLARITY
Energy Meter +Data to the E2 RS485 -
Energy Meter -Data to the E2 RS485 +
MODBUS
device
MODBUS
device