Emerson 250-5000 User manual

026-1726 Rev 0 22-MAR-2011
Energy Meter
Installation and
Operation Manual

Retail Solutions
3240 Town Point Drive NW Suite 100
Kennesaw, GA 30144
Phone: [phone]
Fax: [phone]
ALL RIGHTS RESERVED.
The information contained in this manual has been carefully checked and is believed to be accurate. However, Com-
puter Process Controls, Inc. assumes no responsibility for any inaccuracies that may be contained herein. In no event will
Computer Process Controls, Inc. be liable for any direct, indirect, special, incidental, or consequential damages resulting
from any defect or omission in this manual, even if advised of the possibility of such damages. In the interest of continued
product development, Computer Process Controls, Inc. reserves the right to make improvements to this manual, and the
products described herein, at any time without notice or obligation.

Table of Contents • v
TABLE OF CONTENTS
1 INTRODUCTION.......................................................................................................................................................... 1
1.1. SPECIFICATIONS ............................................................................................................................................................ 2
1.2. NOTICE ......................................................................................................................................................................... 3
1.2.1. FCC Part 15 Information ..................................................................................................................................... 3
2 OVERVIEW................................................................................................................................................................... 3
2.1. DIMENSIONS ................................................................................................................................................................. 3
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.......................................................................................................................................... 6
4 WIRING.......................................................................................................................................................................... 7
4.1. WIRING DIAGRAMS ..................................................................................................................................................... 7
4.2. CONTROL POWER ......................................................................................................................................................... 9
4.2.1. Fuse Recommendations......................................................................................................................................... 9
4.3. WIRING CONNECTION TO E2 ...................................................................................................................................... 10
5 DISPLAY SCREEN DIAGRAM................................................................................................................................ 10
5.1. LCD SCREEN ............................................................................................................................................................. 10
5.2. BUTTONS .................................................................................................................................................................... 10
6 NETWORK SETUP AND COMMISSIONING ...................................................................................................... 11
6.1. SET UPNETWORK PORTS ........................................................................................................................................... 11
6.2. ADDING AN ENERGY METER...................................................................................................................................... 12
6.3. RS-485 COMMUNICATIONS ........................................................................................................................................ 13
6.3.1. Daisy-chaining Devices to the Energy Meter ..................................................................................................... 13
7 QUICK SETUP INSTRUCTIONS............................................................................................................................. 15
8 SOLID-STATE PULSE OUTPUT ............................................................................................................................. 16
8.1. SET PULSE .................................................................................................................................................................. 16
8.2. SET PULSE ENERGY – WH/P ...................................................................................................................................... 16
8.3. MINIMUM DURATION TIME – MILLISECONDS PER PULSE (MS/P).............................................................................. 16
8.4. MULTIFLEX I/O BOARD PULSE LIMITS - STANDALONE VERSION ONLY................................................................... 16
9 UI MENU ABBREVIATIONS ................................................................................................................................... 17
10 USER INTERFACE FOR DATA CONFIGURATION ...................................................................................... 18
11 ALERT/RESET INFORMATION........................................................................................................................... 19
12 USER INTERFACE FOR SETUP ......................................................................................................................... 20
13 ENERGY METER STANDARD MODBUS DEFAULT SETTINGS ................................................................. 22
14 TROUBLESHOOTING ............................................................................................................................................ 23
15 APPENDIX OF COMPATIBLE CURRENT TRANSDUCERS .......................................................................... 24

Introduction • 1
1Introduction
The Energy Meter (P/N 250-5000) provides a so-
lution for measuring energy data with a single device.
Inputs include Control Power, CT, and 3-phase volt-
age. The Energy Meter supports multiple output op-
tions, including solid state relay contacts, Modbus,
and pulse. The LCD screen on the faceplate allows in-
stant 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 environ-
ment only. A Pollution Degree 2 environment must
control conductive pollution and the possibility of
condensation or high humidity. Consider the enclo-
sure, the correct use of ventilation, thermal properties
of the equipment, and the relationship with the envi-
ronment. Installation category: CAT II or CAT III.
Provide a disconnect device to disconnect the En-
ergy 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 rele-
vant 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. Pro-
vide overcurrent 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 ser-
viced 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 026-1726 Rev 0 22-MAR-2011
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 Measure-
ment
True RMS up to the 21st harmonic 60 Hz
One to three phase AC system
Input Voltage Characteristics:
Measured AC Volt-
age
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 MΩL-N /5 MΩL-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 mod-
els) 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 Pro-
tection (IEC
60529)
IP40 front display; IP20 Meter
Display Character-
istics
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 Temper-
ature
-30°C to 70°C (86°F to 158°F)
Storage Tempera-
ture
-40°C to 85°C (-40°F to 185°F)
Humidity Range <95% RH (non-condensing)
Altitude of Opera-
tion
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 With-
stand
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 Overview • 3
1.2. Notice
• This product is not intended for life or safety appli-
cations.
• 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 electri-
cal enclosure.
1.2.1. FCC Part 15 Information
2Overview
2.1. Dimensions
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 de-
signed to provide reasonable protection against harm-
ful interference when the equipment is operated in a
residential environment. This equipment generates, us-
es, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction
manual, may cause harmful interference to radio com-
munications. Operation of this equipment in a residen-
tial 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
theexpressauthorizationof RetailSolutionsnullifythis
statement.
Figure 2-1 - Energy Meter Dimensions
Figure 2-2 - Bottom View (DIN Mount Option)

4 • Energy Meter 026-1726 Rev 0 22-MAR-2011
2.2. Product Diagram
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 in-
terior surface of the enclosure.
3.1.1. DIN Rail Mounting
1. Attach mounting clips to the underside of the Ener-
gy Meter by sliding them into the slots from the in-
side. 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 out-
side of the housing.
2. Use three #8 screws (not supplied) to mount the En-
ergy Meter to the inside of the enclosure. See dia-
gram of the underside of the Energy Meter (below).
WARNING! Disconnect power prior to instal-
lation.
Any covers that may be displaced during the
installation must be reinstalled before powering the
unit.
Mount the Energy Meter in an appropriate electri-
cal 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 026-1726 Rev 0 22-MAR-2011
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).
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 Inter-
face:
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 dia-
grams 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 dis-
connect switch with a fuse or dis-
connect 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 (e.g. 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 026-1726 Rev 0 22-MAR-2011
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 lo-
cal 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 capa-
bility.
• Over-current protection should be selected with a
time delay.
• The voltage rating should be sufficient for the input
voltage applied.
• Provide overcurrent 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 026-1726 Rev 0 22-MAR-2011
4.3. 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 con-
nect 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, ter-
minate the E2 with all three jumpers in the terminated
(UP) position.
5 Display Screen Dia-
gram
5.1. LCD Screen
5.2. Buttons
Figure 4-11 - 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 +
Figure 5-1 - Energy Meter Screen
Figure 5-2 - Energy Meter Buttons

Set Up Network Ports Network Setup and Commissioning • 11
6 Network Setup and
Commissioning
Connecting an Energy Meter to an E2 requires the
E2 to be version 3.0 or above. Contact Retail Solu-
tions for upgrade information if the controller is a ver-
sion before 3.0.
An E2 has up to three COM ports that can be as-
signed 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. En-
sure your E2 is equipped with an RS485 COM Card
(P/N 637-4890) and configured in E2 General Servic-
es (, 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 as-
sign 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 En-
ergy Meter must be configured to use the Energy Me-
ter.
1. Log in to the E2 with Level 4 access.
2. Press followed by  - General
Controller Info.
3. Press +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 con-
nection 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 set-
ting 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.)
•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. Re-
fer to Table 2.
•Stop Bits - Leave this field at the default value (1).
7. Press to save changes and exit.
Figure 6-1 - Location of E2 COM Ports
E2 PIB COM PORTASSOCIATIONS
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

12 • Energy Meter 026-1726 Rev 0 22-MAR-2011
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  - 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 - Network Summary.
5. Locate the Energy Meter units you added to the net-
work list (press and to scroll through the
list). The default name for an Energy Meter incre-
ments up starting with Energy001. The two and
three-letter designator does not apply here.
6. 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 MOD-
BUS network, specify which network you want the
device to belong to.) A screen will open that will al-
low you set the address:
7. In the list of MODBUS devices, choose the address
number corresponding to the Energy Meter’s dip
switch/jumper setting, and press 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
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 • 13
not being used.
8. Repeat Steps 5 and 6until each Energy Meter de-
vice has been commissioned.
9. When finished, press to return to the Network
Setup menu, then press - 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:
•Online - The Energy Meter is communicating nor-
mally.
•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 ad-
dress, baud rate, and parity.
•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.
•No Port - No port is set up in the E2 Serial Config-
uration Manager to be a MODBUS port.
•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 com-
munication. 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 Ener-
gy 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 communi-
cations 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 com-
pliant with the requirements of the EIA RS-485
communications standard.
• The RS-485 transceivers are ¼ unit load or less.
• RS-485+ has a 47 kOhm pull up to +5V, and RS-
485- has a 47 kOhm pull down to Shield (RS-485
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

14 • Energy Meter 026-1726 Rev 0 22-MAR-2011
signal ground).
• Wire the RS-485 bus as a daisy chain from device to
device, without any stubs. Use a 150 ohm termina-
tion resistor at the end of the bus between the Energy
Meter’s +and -terminals (not included, or use Re-
tail Solutions MODBUS termination block
P/N 535-2711).
• Shield is not internally connected to Earth Ground.
• Connect Shield to Earth Ground somewhere on the
RS-485 bus.
• When tightening terminals, ensure that the correct
torque is applied: 0.37-0.44 ft·lb (0.5-0.6 N·m).
Figure 6-9 - Energy Meter Wiring