E-Mon E50-6003200J User Manual

62-0416-01

Green Class Net
Meter

ADVANCED KWH/DEMAND METER

INSTALLATION INSTRUCTIONS

E-Mon

850 Town Center Drive

Langhorne, PA 19047

[phone]

www.emon.com

[e-mail]

GREEN CLASS NET METER

Dear Valued Customer,

We are pleased that you chose to buy one of our products, and want you to be just as
pleased with owning it. Before installing your new E-Mon product, please read the
information on the following pages carefully.

We believe that you will find the E-Mon D-Mon meters easy to install and to use for
monitoring and evaluating your electrical usage.

To be sure that you are 100% satisfied with your products, we provide toll-free
technical and sales support Monday through Friday, 8:00 am to 7:30 pm, EST:
[phone]. You may also reach us via email at [e-mail].

If you have questions, we can handle them quickly and effectively with a telephone call.
Please let us try to help you BEFORE you remove your meter. And to help us help you,
we ask that you have all relevant information on hand when you call (model or part
numbers, nature of difficulty, etc.)

Be sure to forward this manual to the owner after installation is complete, so that they
may use it as a reference guide when reading the E-Mon D-Mon meter.

Thank you.

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GREEN CLASS NET METER

TABLE OF CONTENTS

Section 1.0 Introduction 4

Section 2.0 Internal Electronic Assemblies 5

Section 2.1 Main Power Board 6

Section 2.2 Display Board 7

Section 2.3 Input Board 8

Section 3.0 Meter Technical Specifications 9

Section 4.0 Safety Label Definitions and Information 11

Section 5.0 Precautionary/Safety Information 12

Section 6.0 Meter Installation 13

Section 6.1 Mounting the Green Class Net Meter 13

Section 6.2 Main Power Board Connections 13

Section 6.3 Phasing of Line Voltage 15

Section 6.4 Current Sensor Installation & Wiring 16

Section 6.5 Main Power & Current Sensor Wiring Diagram 19

Section 6.6 Line Voltage/Current Sensor Diagnostics 19

Section 6.7 RS-485 Wiring 21

Section 6.8 RS-232 Communications 23

Section 6.9 Modem Wiring 25

Section 6.10 Modbus RTU Wiring 28

Section 6.11 BACnet Wiring 28

Section 6.12 Connect Green Class Net Meters to USB Key using RS485 29

Section 6.13 Ethernet Communications 30

Section 7.0 Multiple-Load Monitoring 32

Section 8.0 Preventative/Scheduled Maintenance 33

Section 9.0 Lithium Battery Replacement 34

Section 10.0 Green Class Net Meter Features 36

Section 10.1 Display Board Push Buttons 36

Section 10.2 Reading The Green Class Net Meter Display 39

Section 11.0 Frequently Asked Questions 40

Section 12.0 Modbus Point Map 42

Section 13.0 Meter Limited Warranty 48

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GREEN CLASS NET METER

CAUTION

WARNING

1.0 INTRODUCTION

The E-Mon D-Mon® Green Class Net meter is a 3-phase meter with communications.
The device is used to monitor electric power usage of individual loads after the utility
meter and store kW and kVAR data for automatic meter reading. The Green Class Net
meter is dual protocol capable and provides both RS485 and Ethernet
communications. Installation must only be performed by qualified personnel and in
accordance with these instructions and all applicable local and national electrical
codes. E-Mon and its representatives assume no responsibility for damages or injury
resulting from the improper installation of this meter.

Verify the input voltage rating and configuration on the unit panel label to ensure that it
is suitable for the intended electrical service. Green Class Net meters labeled for 120/
208V service MUST NOT be installed on service feeds of 277/480 volts or 347/600
and vice versa. Verify that the Green Class Net meter’s current sensors are sized
suitably for the load to be monitored. Compare the color of the arrows on the current
sensors to the chart below to confirm the correct current sensor is being used.

Sensor Arrow Color Code Sensor Rating

Brown 100 A

Red 200 A

Yellow 400 A

Black 800 A

Blue 1600 A

White/Black 3200 A

Internal circuit card components are extremely sensitive to electrostatic
discharge. Prior to handling or touching internal circuitry, discharge any static
buildup on your person. To discharge yourself, touch a grounded metal object
such as conduit or an earth grounded metal enclosure.

Use of this instrument, Green Class Net meter, in a manner inconsistent with
this manual or not specified by the manufacturer in writing, can cause
permanent damage to the unit and/or serious injury to the operator. The
protection and safety features provided by this equipment may become
impaired or otherwise compromised.

NOTE: If any trouble arises during installation or functional verification operations, do

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not immediately remove unit. Before removing the unit, contact E-Mon’s tech­nical support department at [phone]. E-Mon’s technical department
will assist you in detailed troubleshooting of the Green Class Net meter instal­lation.

GREEN CLASS NET METER

MAIN POWER
BOARD

DISPLAY
BOARD

M33270

2.0 INTERNAL ELECTRONIC ASSEMBLIES

The unit is comprised of two major subassembly boards, the main power board and
the display board. Both circuit boards are mounted inside a NEMA 4X enclosure.

Fig. 1. Internal Electronic Assemblies.

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GREEN CLASS NET METER

2.1 Main Power Board

Connections to this board include the MAIN Power Input and current sensors. The
MAIN Power Input terminals are positions one through four on the four position screw
terminal block, TB1. These terminals are covered with a protective shield for safety
purposes. The current sensor assemblies interface to the TB2, TB3 and TB4. Each
terminal block corresponds to an input voltage phase; care must be exercised to
ensure that each current sensor is connected to the correct terminal block. One three
terminal screw connector(TB42) is provided for RS-485 communications. One RJ-45
jack (J8) is provided for 10/100-base T Ethernet. One two terminal screw connector
provides phase loss alarming.

There are also two headers present for adding option cards. Header J3 is 20 positions
for use with an I/O board with up to two relays, two pulse inputs and two pulse out puts.
Header J4 is a 10 positions for use with modem and LonWorks TP/FT-10.

J3

J4

TB1
POSITIONS

J8

POSITIONS
6-10

Fig. 2. Main Power Board Connections.

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TB42

PHASE LOSS

M33271

GREEN CLASS NET METER

M33279

DOWN

UP

SELECT

MENU

2.2 Display Board

The display board connects to the main power board via a flex ribbon cable and the
board mounts on the inside of the housing door.

No additional connections to the display board are required. The display board’s LCD
readout indicates the metered values as well as errors associated with the Green
Class Net meter, such as phase loss or sensor error conditions.

Fig. 3. Display Board.

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GREEN CLASS NET METER

M33272

INPUT TERMINALS

CL5000 METER INPUT BOARD

INP1

+

+++

INP2 OUT1 OUT2

2.3 Input Board

The Green Class Net meter is supplied with an input board which allows it to accept
pulses (dry contact) from third party meters, such as gas, water, BTU, etc.

Fig. 4. Input Board.

The input terminals are used by the Green Class Net meter. The output terminals are
not. Connect metering devices with “dry contacts” only. If the contacts are from solid ­state (electronic) sources, polarity must be observed for proper operation.

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GREEN CLASS NET METER

M33273

EXAMPLE:

E 50 208 400 R 05 KIT

CLASS 5000 METER
INPUT VOLTAGE (208V)
CURRENT RATING (400A)
ENCLOSURE (4X)
EZ7/BACnet IP/NO MODEM

E-MON

SPLIT CORE SENSORS

3.0 METER TECHNICAL SPECIFICATIONS

Input Voltage

3-wire (Delta) Or 4-wire (Wye)

Configuration

Mains Voltage Input Up To 480 VAC RMS Available

Input Power 6 VA Maximum Rating

Current Sensor

Up To 3200 Amps RMS AC Available

Rating

Power Factor 0.5 Leading Or Lagging

Line Frequency 50-60 Hz

Metering Accuracy Certified To ANSI C12.20

Voltage Operating

+/-10% Of Rated Load

Range

Temperature Range -20 C To +50 C (Standard indoor enclosure):

Temperature Range -20 C To +70 CNEMA 4X (NEMA 4X outdoor enclosure)

Relative Humidity

0-95% Non-condensing

Range

Altitude 2000 Meters Maximum

Voltage Overload +25% Continuously: +100% For 20 Cycles

Current Sensor

100% For 1 Minute Without Damaging Meter

Overload

Pollution Degree Degree 2 In Accordance With IEC 664

Installation

Category 111
(Overvoltage)
Category

Measurement

Category 111
Category

Enclosure Material Indoor Housing Rating (Standard): NEMA 12

Outdoor Housing Rating (Optional): NEMA 4X

Display Readout KWh Accumulated,

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GREEN CLASS NET METER

Standard Ranges 4-Wire Wye, 120/208 VAC: 100, 200, 400, 800,1600,3200 Amp

2 Phase, 120/240 VAC: 100, 200, 400, 800,1600,3200 Amp

4-Wire Wye, 277/480 VAC: 100, 200, 400, 800,1600,3200 Amp

3-Wire Delta, 220/240 VAC: 100, 200,400,800,1600,3200 Amp

3-Wire Delta, 480 VAC: 100, 200, 400, 800,1600,3200 Amp

Modem Interface Cable: UL-listed Telephone Cord,

6-cond. 300 VAC, Stranded
Cond. 22-26 AWG.

Cable Connector: RJ-45 male IDC

Input/Output Voltage: +5 VDC/18 VAC

Ckt Input Isolation 5.3K VAC for 1 Minute

Baud Rate: 9600

IDR Interface Port Cable: UL-listed/rated Telephone

Cord. 4-cond.

Input/output Voltage: Ground-isolated +/-5.4VDC

Cable Connector: RF-45 Male IDC Or Screw

Terminal Termination

Circuit Input Isolation: 5.3kVAC

Circuit output Isolation: 21.5kVAC

Isolated Pulse/Alarm Outputs

(TB5, TB6):

Output Voltage Potential: 0 VDC to +5 VDC Logic Levels

Mating Plug Connector: Weidmuller PN: 152876

Signal Isolation Voltage: 5.3K VAC for 1 Minute

Recommended
In-line Fuse

Manufacturer: Littlefuse

Mfg. Part No: KLDR.100

Rating: 100mA, Time-delay, 600VAC

Cartridge Fuse

Battery Cell Description: Non-rechargeable Cell Used

For Memory Retention

Manufacturer: Panasonic

Mfg Part No: CR2032

Working Voltage: 3 VDC

Current Capacity 225 mAHr

Electrolyte: Manganese Dioxide Lithium

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GREEN CLASS NET METER

4.0 SAFETY LABEL DEFINITIONS AND
INFORMATION

The Green Class Net meter may contain one or more of the following labels.
Operator(s) should familiarize themselves with the meaning of each label to minimize
risk.

The presence of this label is a cautionary indicator identifying a
danger risk. The manual should be consulted prior to proceeding.

The presence of this label indicates an electrical shock hazard exists
in the location or area where the label is placed. Prior to proceeding,
the MAINS power must be disconnected and the manual consulted for
safety information.

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GREEN CLASS NET METER

CAUTION

WARNING

WARNING

WARNING

5.0 PRECAUTIONARY AND SAFETY
INFORMATION

Internal circuit card components are extremely sensitive to electrostatic
discharge. Be careful not to touch internal circuitry prior to discharging any
static buildup on your person. To discharge yourself, touch a grounded metal
object such as conduit or an earth-grounded metal enclosure.

High voltages present on main PCB terminal block TB1 screw terminals. Risk
of serious injury and/or electrical shock exists. Prior to performing any wiring
operations, review all contents of the user manual and de-energize the MAINS
power switch. Only qualified personnel should perform installation wiring.
Installation wiring must comply with all local and national electrical codes.

Failure to ground the enclosure creates a possible shock hazard. Do not
operate the Green Class Net meter without a protective earth wire attached
securely to the PE terminal screw. After installing protective earth wiring,
secure the screw tightly (7in-lb torque.)

NEVER open front panel of unit while unit has MAINS power applied. Failure to
comply can increase the risk of serious injury and/or electrical shock.

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GREEN CLASS NET METER

WARNING

6.0 METER INSTALLATION

6.1 Mounting the Green Class Net Meter

Use appropriately sized mounting hardware to fasten the meter enclosure to the
selected mounting surface.
The four housing mounting holes are centered 6.75” H x 4” W.

NOTE: Units housed in UL Type 1 enclosures must only be installed in indoor envi-

ronments, where they will not be affected by the elements.

6.2 Main Power Board Connections

1. Installing a temporary ground for ESD protection: With all circuits de-energized,
connect a temporary protective earth ground connection for ESD protection.
Prior to performing any unit wiring, be sure to discharge any static on your per­son.

2. Installing the Green Class Net protective earth ground: Connect an earth ground
wire to the Green Class Net meter’s protective earth ground lug with a torque of
7 N-m. for meters in metal enclosures.

Failure to attach the protective earth ground wire securely to the meter creates
a potential shock hazard. Do not operate the meter without a protective earth
ground connection securely installed.

3. Wire Entry: One 3/4” conduit opening is located on the bottom of the unit enclo­sure. This opening is used for bringing in MAINS power and for current sensor
wiring. Route the appropriate cabling to and through the respective enclosure
opening.

4. After installing the conduit fitting and conduit, verify that each conduit slip nut is
securely tightened to its respective conduit fitting. Any unused openings must be
sealed with a UL rated plugging device suitable for the rating of the enclosure
(check formatting).

NOTE: Metallic enclosure has one additional 1/2” conduit opening at top of unit.

5. Unit MAINS wiring: The first four positions of terminal block TB1, located at the
bottom left corner of the main power board, are clearly labeled Phase A, B, C, N
(neutral). Earth Ground MUST be connected to the PCB mounting screw in the
lower right corner.

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GREEN CLASS NET METER

a. Connect the NEUTRAL wire to the appropriate terminal block position.

Fig. 5. Terminal Block TB1.

NOTE: For 3-wire delta-type meters, Do NOT connect the NEUTRAL wire. Remove

the terminal block screw for this position.

b. Earth Ground

Connect the Earth Ground to the PCB mounting screw in the lower right cor­ner.

c. External Switch Mechanism/In-Line Fuse Installation

To ensure a safe installation, the Green Class Net meter requires an external
switch mechanism, such as a circuit breaker, be installed on the Green Class
Net MAINS input wiring. The switch mechanism must be installed in close
proximity to the meter and easily reachable for the operator. This device
must also be marked as the disconnecting device for the Green Class Net
meter. Install 1/10 Amp Slow Activation in-line fuses with the suitable voltage
rating for each conductor phase at the MAINS input to the meter. The fuses
must be labeled to indicate voltage and current rating as well as element
characteristics. The fuse element must be slow activating type.

d. Connect the three AC main power wires (Phases A, B and C) to their respec-

tive positions as labeled on terminal block TB1 and tighten to 7 in-lb. After all
conductors are connected to each of their respective terminal block positions
and tightened down, verify that each terminal block screw is securely fas­tened by gently tugging on each conductor.

Verify that no conductor wires are frayed or shorting to adjacent terminal
block positions.

e. Turn ON the AC main power input. The meter display will light up and scroll

through the displays. Each display is visible for 5 seconds. Display screens
are as follows:

Screen 1 - DEL, REC, NET kilowatt-hours (kWh) consumed
Screen 2 - Peak demand (kW) with date & time stamp
Screen 3 - Actual load (kW) with preset date & time
Screen 4 - Average current (amps) per phase
Screen 5 - Average voltage (volts) per phase
Screen 6 - Power factor (PF) per phase
Screen 7 - CO2 COST

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GREEN CLASS NET METER

f. Verify the voltage readings on Screen 5 using an AC voltmeter. Typical read-

ings shown below are measured phase to neutral for 4 wire and phase to
phase for 3 wire. Readings should be +/- 10% of nominal.

Meter Type Nominal Voltage Limits (+/- 10%)

208/240V, 3ø, 4 Wire 120 VAC (L-N) 108 to 132 VAC

480V, 3ø, 4 Wire 277 VAC (L-N) 249 to 305 VAC

208/240V, 3ø, 3 Wire 240 VAC (L-L) 216 to 264 VAC

480V, 3ø, 3 Wire 480 VAC (L-L) 432 to 528 VAC

600V, 3ø, 4 Wire 347 VAC (L-N) 312 to 380 VAC

NOTE: Meters are powered by phases A and B. The displayed voltages will be the

measured AC voltage between phases.

6.3 Phasing of Line Voltage

The 3-phase AC power input must be in proper phase sequence. If the sequence is
incorrect or a phase is missing, there will be a message on the meter’s display: “PH
Sequence Error” or “PH Missing:. (Refer to the section on Line Voltage Diagnostics if
this message is present.) When the line voltage is connected correctly, the meter’s
display will be blank (no message.)

Wait for the meter display to scroll to the voltage display. Verify that the meter reads
correct voltages on all three phases. Repeat Step 6.2.4.F.

Once the meter displays the correct line voltages and there are no error messages,
you are ready to connect the current sensors to the meter. Before continuing with the
installation, verify that the screens display as follows:

Screen 1 (kWh): Should read 0.0 kWh; if not, should be reset.

Screen 2 (kW Peak Demand): kW peak should read 0.0 kW. There will not be a

Screen 3 (Load/Clock Calendar): Should read 0.0 kW load.

Screen 4 (Amps per Phase): There should be 0.0 on all three phases.

Screen 5 (Average AC Volts): See the section 6.2.4.F.

Screen 6 (Power Factor): There should be 0.0 PF on all three phases.

NOTE: The meter will be reset later via the software during “startup” procedures.

date/time stamp yet. If there is a kW peak recorded,
it should be reset later.

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