Veris Industries ENERCEPT H8035 User manual

POWER MONITORING
Z201686-0K PAGE 1 ©2010 Veris Industries USA 800.354.8556 or +1.503.598.4564 / suppor[email protected] 10101
Alta Labs, Enercept, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘V’ logo are trademarks or registered trademarks of Veris Industries, L.L.C. in the USA and/or other countries.
TM
INSTALLATION GUIDE
ENERCEPT®H8035/H8036
Networked Power Transducer (Modbus RTU)
US Patent No. 6,373,238
Installer’s Specifications
Input Voltage 208 to 480 VAC
Number of Phases Monitored 1 or 3
Frequency 50/60 Hz
Maximum Primary Current 100/300/400/800/1600/2400 A continuous per phase
CT case isolation 600 VAC
Internal isolation 2000 VAC rms
Operating temp. range 0° to 60°C (32° to 122°F) (<95%RH, non-condensing)
Storage temp. range -40° to 70°C (-40° to 158°F)
Accuracy ±1% of reading from 10% to 100% of the rated current*
Output Type RS-485, 2-wire plus common
Baud Rate 9600
Protocol Modbus RTU
* Accuracy specied with conductors centered in the CT window.
QUICK INSTALL
Disconnect and lock out power before installation.
1. Set the address switches located on the bottom of the CT.
2. Connect the voltage leads to the source to be monitored.
3. Snap the CT onto the conductor (observe color matching).
4. Connect the Modbus wires (observe polarity).
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.
• Use a properly rated voltage sensing device to confirm power is off.
DO NOT DEPEND ON THIS PRODUCT FOR VOLTAGE INDICATION
• Only install this product on insulated conductors.
Failure to follow these instructions will result in death or serious injury.
DANGER
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.
FCC PART 15 INFORMATION
NOTE: This equipment has been tested by the manufacturer 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.
Modifications to this product without the express authorization of
Veris Industries nullify this statement.
CAUTION
RISK OF EQUIPMENT DAMAGE
• Enercept meters are rated for use at 50-60Hz. Do not connect this product to circuits with
high harmonic energy, such asVariable Speed Drives (a.k.a.Variable Frequency Drives,
Adjustable Frequency Drives) or similar sources, as these may permanently damage the
product.
Failure to follow these instructions can result in overheating and permanent
equipment damage.
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

H8035/H8036
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TM
INSTALLATION GUIDE
DIMENSIONS
A
B
E
F
CD
B
E
F
CD
A
A
B
E
C
F
D
MEDIUM
400/800 Amp
A = 4.9" (125 mm)
B = 2.9" (73 mm)
C = 2.5" (62 mm)
D = 1.2" (30 mm)
E = 5.2" (132 mm)
F = 5.9" (151 mm)
LARGE
800/1600/2400 Amp
A = 4.9" (125 mm)
B = 5.5" (139 mm)
C = 2.5" (62 mm)
D = 1.2" (30 mm)
E = 7.9" (201 mm)
F = 6.0" (151 mm)
SMALL
100/300 Amp
A = 3.8" (96 mm)
B = 1.2" (30 mm)
C = 1.3" (31 mm)
D = 1.2" (30 mm)
E = 4.0" (100 mm)
F = 4.8" (121 mm)
PRODUCT IDENTIFICATION
Modbus Enhanced Data Stream Power Transducers*
MODEL MAX. AMPS CT SIZE
H8036-0100-2 100 SMALL
H8036-0300-2 300 SMALL
H8036-0400-3 400 MEDIUM
H8036-0800-3 800 MEDIUM
H8036-0800-4 800 LARGE
H8036-1600-4 1600 LARGE
H8036-2400-4 2400 LARGE
*H8036 models work with H8920-1 LON nodes
Modbus Basic Power Transducers*
MODEL MAX. AMPS CT SIZE
H8035-0100-2 100 SMALL
H8035-0300-2 300 SMALL
H8035-0400-3 400 MEDIUM
H8035-0800-3 800 MEDIUM
H8035-0800-4 800 LARGE
H8035-1600-4 1600 LARGE
H8035-2400-4 2400 LARGE
*H8035 models work with H8920-5 LON nodes

H8035/H8036
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TM
INSTALLATION GUIDE
OPERATION
The H8035 and H8036 three-phase power transducers monitor energy parameters
from aggregate kW (real power) and kWh (consumption) to power factor per phase.
Integration of electronics lowers hardware and installation costs. The sensors
automatically detect phase reversal, so CT load orientation is not a concern. The CTs
and electronics are calibrated as a set, so it is necessary to color-match the CTs and
voltage leads when installing. These devices monitor up to 63 loads at a time on a
single RS-485 drop.
With two platforms to choose from (H8035 Energy Only or H8036 Enhanced Data
Stream), the applications for these devices are diverse, including aggregate billing,
tenant monitoring, energy management, performance contracting, demand limiting
and cooling plant optimization.
INSTALLATION
Disconnect and lock out power before installation.
The Enercept meter, including the current transformers (CTs), voltage connection
fuses, and fusepac, is permitted within electrical distribution equipment including
but not limited to panelboards, switchboards, motor control centers, and
transformers. Carefully review the equipment in which the Enercept meter will be
installed. The following installation conditions should be considered during the
installation process:
• Review the equipment enclosure for ventilation openings. Wires will cross
many of these openings in a normal installation, however, do not install
the Enercept where it will substantially block ventilation openings in the
enclosure.
• The Enercept meter and the wiring installed within a wiring space
or gutter should not exceed 75 percent cross sectional ll at the
Enercept meter parts as addressed in the NEC. Improper installation of
Enercept meter in the wire gutter of equipment may aect the thermal
performance of the equipment.
• The arrangement of CTs within the equipment must also be considered to
ensure the bending radius of conductors is not adversely aected.
• Review the arrangement and location of the CTs within the equipment.
The CT must not create undue strain on the conductor. A CT may require
appropriate support in order to address such a condition.
1. Choose a unique address and set the switches for that address as
shown in the Address Selection Switches section. Only addresses 1
to 63 can be used.
2. Connect the voltage leads to the phase conductors, at a location
that is not normally turned o. Connect voltage leads on the Line
side of the conductor to ensure constant power to the Enercept. For
a 3-phase system, connect the red lead to phase A, black to phase
B, and yellow to phase C. See the Wiring section on the following
page.
3. Snap the CT onto the conductor.
Connect CTs to the correspondingly
colored voltage lead. If the
application can exceed 20 times the
rated CT current, use wire ties to
secure the I-bar to the CT housing.
This CT automatically detects phase
reversal, so CT load orientation is not
important.
4. Remove the terminal block and attach the RS-485 wires. Observe (+), (-), and
Shield polarity. Insulate any exposed wiring.
SHIELD SHIELD
SS
SHIELD
120Ω
Terminator
PRODUCT DIAGRAM
Fuse Pack
Enercept®
1
2
3456
1. Voltage leads: Input range is 208 to 480V.
2. Fuses: Maximum current draw 60mA. Fuses provided by the factory are rated
1/2A, 600VAC, 200 KAIC. Replace only with fuses of the same type and rating.
3. Modbus connector
4. Status LED: Blink codes: slow green for normal operation; slow red for incorrect
wiring or low power factor (less than 0.5); fast red for maximum current
exceedance.
5. Modbus address switches: Used to set the pulse output rate.
6. External CTs: Permanently attached; do not disconnect or use with other power
transducers.
Color match CTs and voltage leads! Example: clamp the
red labeled CT around the power conductor connected to
the red voltage wire.
Wire tie
RS-485
CONNECTION
STATUS
+
-
Shield
ADDRESS
1
2
4
8
16
32

H8035/H8036
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TM
INSTALLATION GUIDE
WIRING
Typical 208/480 VAC 3Ø, 3- or 4- Wire Installation
MODBUS RS-485 LINE
ØB
ØA
ØC
Typical 240/120 VAC 1Ø, 3-Wire Installation
120
Neutral
120
MODBUS RS-485 LINE
To additional MODBUS Devices
ØA
ØB
Typical 277 VAC 1Ø, 2-Wire Installation
Neutral
277
MODBUS RS-485 LINE
To additional MODBUS Devices
ØA
NOTES
1. DO NOT GROUND THE SHIELD INSIDE THE ELECTRICAL PANEL. All Modbus wires,
including the shield, should be insulated to prevent accidental contact with high
voltage conductors.
2. The Modbus cable should be mechanically secured where it enters the electrical
panel.
3. All Modbus devices should be connected together in a daisy-chain fashion. The
rst and last devices in the chain should have a 120Ω terminating resistor between
(+) and (-).
4. The Modbus cable should be shielded twisted pair wire BELDEN 1120A or similar.
WARNING: After wiring, remove all scraps of wire or foil
shield from the electrical panel. This could be DANGER-
OUS if wire scraps come into contact with high voltage
wires!
OUTPUT
H8035
kWh, consumption
Reset kWh
kW, demand
H8036
kWh, consumption
kW, real power
VAR, reactive power
VA, apparent power
Power factor
Average real power
Minimum real power
Maximum real power
Voltage, line-to-line
Voltage, line-to-neutral
Amps, average current
kW, real power ØA
kW, real power ØB
kW, real power ØC
Power factor ØA
Power factor ØB
Power factor ØC
Voltage, ØA to ØB
Voltage, ØB to ØC
Voltage, ØAto ØC
Voltage, ØA to Neutral
Voltage, ØB to Neutral
Voltage, ØC to Neutral
Amps, Current ØA
Amps, Current ØB
Amps, Current ØC
Note: The Enercept cannot communicate on the network bus without power.
Therefore, it is best to connect the voltage leads ahead of switching devices.
5. For information regarding software setup, see the Modbus protocol specications
available at www.veris.com/Modbus/.
6. Check power reading (these calculations are approximations only).
Expected power:
kW = Volts x Amps x 1.732 x PF / 1000
kW = Horsepower x 0.746

H8035/H8036
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TM
INSTALLATION GUIDE
ADDRESS SELECTION SWITCHES
Each Modbus device must have a unique address. These switches must be set to assign a unique address before the device is connected to the Modbus RS-485 line. If an
address is selected which conicts with another device, both devices will be unable to communicate.

H8035/H8036
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TM
INSTALLATION GUIDE
MODBUS REGISTER ADDRESSING
This table lists the addressed assigned to each data point. Registers are read MostSignicant Byte (MSB) rst. 32 bit oating point values are encoded per IEEE Standard 754.
For oating point format variables, each data point appears twice because two 16-bit addresses are required to hold a 32-bit oat value. The 16 bit Most Signicant Word
(MSW) is in the lower address of the register pair, while the least Signicant Word (LSW) is in the upper address.
Modbus RTU function codes supported: 3=read holding registers; 6=preset single register; 17=report Slave I.D.
Quick Reference of the Most Common Data Points
Address Typical
Offset
Units Description Integer:
multiplier required
Float:
upper 16 bits
Float:
lower 16 bits
40001 0 KWH Energy Consumption, LSW X
40002 1 KWH Energy Consumption, MSW X
40003 2 KW Real Power X
40257 --- KWH Energy Consumption X
40258 KWH Energy Consumption X
40259 0 KWH Energy Consumption (same 40257) X
40260 KWH Energy Consumption (same 40258) X
40261 2 KW Real Power X
40262 KW Real Power X
Complete Listing of Data Points
Address Typical
Offset
Units Description Integer:
multiplier required
Float:
upper 16 bits
Float:
lower 16 bits
40001 0 KWH Energy Consumption, LSW X
40002 1 KWH Energy Consumption, MSW X
40003 2 KW Real Power X
40004 3 VAR Reactive Power X
40005 4 VA Apparent Power X
40006 5 --- Power Factor X
40007 6 VOLTS Voltage, line to line X
40008 7 VOLTS Voltage, line to neutral X
40009 8 AMPS Current X
40010 9 KW Real Power, Phase A X
40011 10 KW Real Power, Phase B X
40012 11 KW Real Power, Phase C X
40013 12 --- Power Factor, phase A X
40014 13 --- Power Factor, phase B X
40015 14 --- Power Factor, phase C X
40016 15 VOLTS Voltage, phase A-B X
40017 16 VOLTS Voltage, phase B-C X
40018 17 VOLTS Voltage, phase A-C X
40019 18 VOLTS Voltage, phase A-N X
40020 19 VOLTS Voltage, phase B-N X
40021 20 VOLTS Voltage, phase C-N X
40022 21 AMPS Current, phase A X
40023 22 AMPS Current, phase B X
40024 23 AMPS Current, phase C X
40025 24 KW Average Real Power X
40026 25 KW Minimum Real Power X
40027 26 KW Maximum Real Power X
40257 --- KWH Energy Consumption X
40258 KWH Energy Consumption X
40259 0 KWH Energy Consumption (same 40257) X
40260 KWH Energy Consumption (same 40258) X
40261 2 KW Real Power X
40262 KW Real Power X

H8035/H8036
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TM
INSTALLATION GUIDE
Address Typical
Offset
Units Description Integer:
multiplier required
Float:
upper 16 bits
Float:
lower 16 bits
40263 4 VAR Reactive Power X
40264 VAR Reactive Power X
40265 6 VA Apparent Power X
40266 VA Apparent Power X
40267 8 --- Power Factor X
40268 --- Power Factor X
40269 10 VOLTS Voltage, line to line X
40270 VOLTS Voltage, line to line X
40271 12 VOLTS Voltage, line to neutral X
40272 VOLTS Voltage, line to neutral X
40273 14 AMPS Current X
40274 AMPS Current X
40275 16 KW Real Power, phase A X
40276 KW Real Power, phase A X
40277 18 KW Real Power, phase B X
40278 KW Real Power, phase B X
40279 20 KW Real Power, phase C X
40280 KW Real Power, phase C X
40281 22 --- Power Factor, phase A X
40282 --- Power Factor, phase A X
40283 24 --- Power Factor, phase B X
40284 --- Power Factor, phase B X
40285 26 --- Power Factor, phase C X
40286 --- Power Factor, phase C X
40287 28 VOLTS Voltage, phase A-B X
40288 VOLTS Voltage, phase A-B X
40289 30 VOLTS Voltage, phase B-C X
40290 VOLTS Voltage, phase B-C X
40291 32 VOLTS Voltage, phase A-C X
40292 VOLTS Voltage, phase A-C X
40293 34 VOLTS Voltage, phase A-N X
40294 VOLTS Voltage, phase A-N X
40295 36 VOLTS Voltage, phase B-N X
40296 VOLTS Voltage, phase B-N X
40297 38 VOLTS Voltage, phase C-N X
40298 VOLTS Voltage, phase C-N X
40299 40 AMPS Current, phase A X
40300 AMPS Current, phase A X
40301 42 AMPS Current, phase B X
40302 AMPS Current, phase B X
40303 44 AMPS Current, phase C X
40304 AMPS Current, phase C X
40305 46 KW Average Real Power X
40306 KW Average Real Power X
40307 48 KW Minimum Real Power X
40308 KW Minimum Real Power X
40309 50 KW Maximum Real Power X
40310 KW Maximum Real Power X
Note: Modbus addresses in the 4xxxx format follow the Modicon protocol specication for point addressing. The actual address sent is the value shown, minus 40001.
In other words, the leading “4” is omitted, and the remaining 4-digit number is decremented so that point 40001 is requested with a value of zero in the actual Modbus
communication. Some Modbus implementations require point addresses to be specied beginning at zero or 40000, instead of 40001. Programing code may also require
addresses which correspond to actual values transmitted, so a value of zero is used to request data beginning at Modbus address 40001.
In many applications, a single Modbus command is used to read all of the data available from the Enercept. For integers, the beginning address is 40001 (or zero in the actual
Modbus command), and for oats the rst address used would typically be 40259 (or 258 in the actual Modbus command). Although the rst oat appears at address 40257,
it is not necessary to read this value because it is a duplicate copy of the kWh value (required by the product rmware). When a block of data is read, the “typical oset” values
index to the data within the block.
"Multiplier required" indicates that a multiplication is required to properly scale the integer value. See Using Integer Data Types section.

H8035/H8036
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TM
INSTALLATION GUIDE
USING INTEGER DATA TYPES
Unlike the oating-point data type, the integer data type can only represent whole numbers between zero and 65535. To convert a data point value into the number it
represents, the value must be multiplied by a constant, as indicated in the table below.
Please note: some data points require dierent multipliers for each amperage range, while others, e.g. volts and power factor, use the same multiplier regardless of the
amperage range of the product. The latter are indicated by single row values.
Addr Units 100A 300/400A 800A 1600A 2400A
40001 kWh 7.81E-03 0.03125 0.0625 0.125 0.25
40002 kWh 512 2048 4096 8192 16384
40003 kW 0.004 0.016 0.032 0.064 0.128
40004 VAR 0.004 0.016 0.032 0.064 0.128
40005 VAR 0.004 0.016 0.032 0.064 0.128
40006 --- 3.0518E-5
40007 VOLTS 0.03125
40008 VOLTS 0.015625
40009 AMPS 3.906E-03 0.015625 0.03125 0.0625 0.1250
40010 kW 0.001 0.004 0.008 0.016 0.032
40011 kW 0.001 0.004 0.008 0.016 0.032
40012 kW 0.001 0.004 0.008 0.016 0.032
40013 --- 3.0518E-5
40014 --- 3.0518E-5
40015 --- 3.0518E-5
40016 VOLTS 0.03125
40017 VOLTS 0.03125
40018 VOLTS 0.03125
40019 VOLTS 0.015625
40020 VOLTS 0.015625
40021 VOLTS 0.015625
40022 AMPS 3.906E-03 0.015625 0.03125 0.0625 0.1250
40023 AMPS 3.906E-03 0.015625 0.03125 0.0625 0.1250
40024 AMPS 3.906E-03 0.015625 0.03125 0.0625 0.1250
40025 kW 0.004 0.016 0.032 0.064 0.128
40026 kW 0.004 0.016 0.032 0.064 0.128
40027 kW 0.004 0.016 0.032 0.064 0.128

H8035/H8036
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TM
INSTALLATION GUIDE
As an alternative to the table on the previous page, it can be convenient to invert the values for use as divisors, where the
integer value returned by the Enercept is divided by a number from the table below. In most cases, the divisors are a more
compact number.
Addr Units 100A 300/400A 800A 1600A 2400A
40001 kWh 128 32 16 8 4
40002 kWh 1.9531E-3 4.8828E-4 2.4414E-4 1.2207E-4 6.1035E-5
40003 kW 250 62.5 31.25 15.625 7.8125
40004 VAR 250 62.5 31.25 15.625 7.8125
40005 VA 250 62.5 31.25 15.625 7.8125
40006 --- 32768
40007 VOLTS 32
40008 VOLTS 64
40009 AMPS 256 64 32 16 8
40010 kW 1000 250 125 62.5 31.25
40011 kW 1000 250 125 62.5 31.25
40012 kW 1000 250 125 62.5 31.25
40013 --- 32768
40014 --- 32768
40015 --- 32768
40016 VOLTS 32
40017 VOLTS 32
40018 VOLTS 32
40019 VOLTS 64
40020 VOLTS 64
40021 VOLTS 64
40022 AMPS 256 64 32 16 8
40023 AMPS 256 64 32 16 8
40024 AMPS 256 64 32 16 8
40025 kW 250 62.5 31.25 15.625 7.8125
40026 kW 250 62.5 31.25 15.625 7.8125
40027 kW 250 62.5 31.25 15.625 7.8125

H8035/H8036
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TM
INSTALLATION GUIDE
TROUBLESHOOTING
Problem Solution
Status LED does not blink Check fuses and voltage connections. Status
LED should blink regardless of CTs, Modbus
connections, and DIP switch setting.
Enercept interferes with
another device on the Modbus
network
Set DIP switches to a dierent Modbus address
not in use.
Readings seem highly
inaccurate.
•CheckthateachCTisinstalledontheconductor
with the corresponding color voltage input
lead attached. In most cases, incorrect wiring
will cause the STATUS LED to blink RED (slowly).
However, a power factor lower than 0.5 could
cause the LED to blink this way, even if the unit is
installed properly.
•ItdoesnotmatterwhichsideoftheCTfaces
towards the load.
•Ifcurrentisbelow7%offullscalemaximum
for the CT, use a smaller CT or wrap each wire
through the CT multiple times
•Checkcurrentwithanamp-clamp.
Expected power:
kW = Volts x Amps x 1.732 x PF / 1000
kW = Horsepower x 0.746
PF is usually 0.7 to 0.95, depending on the load.
Enercept goes oine when
load is switched o.
Voltage leads must be connected on the Line
side of the conductor. The Enercept cannot
communicate on the Modbus network without
voltage.
Status LED blinks red. •IftheLEDblinksquickly(i.e.,about5blinksin
two seconds), then the use a CT with a higher
amp rating.
•IftheLEDblinksslowly(i.e.,about1blinkin
two seconds) the CTs are not installed on the
correct conductors, or the power factor is less
than 0.5. The Enercept can accurately measure
these low PFs, but few loads operate normally at
such a low power factor.