the user will be required to correct the interference at his own expense.
ENERCEPT ™ H8035/H8036
Networked Power Transducer (Modbus RTU)
Installer’s Specifications
Measurement A ccuracy:
Syste m Accuracy ±1% of reading from 10% to 100% of the rated current *
Type of Measurement One or three phase AC system
Input Voltage Characteristics:
Measured AC Voltage 208-480 VAC
POWER MONITORING
US Patent No. 6,373,238
DANGER
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.
A qualied person is one who has skills and knowledge related to the construction and
operation of this electrical equipment and the installation, and has received safety
training to recognize and avoid the hazards involved. NEC2009 Article 100
No responsibility is assumed by Veris Industries for any consequences arising out of the
use of this material.
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 as Variable 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.
Frequency Range 50/60 Hz
Fuses 1/2A, 600VAC, 200 kAIC
Input Current Characteristics:
Maximum Primary Current 100, 300, 400, 800, 1600, or 2400 A, continuous p er phase**
Meter Current Draw:
Maximum 60 mA AC
Output:
Modbus RTU Protocol RS-485, 2-wire plus common
Baud Rate 9600
Operating Temperature Range 2400 A model only: 0° to 50°C (32° to 122°F)
all other models: 0° to 60°C (32° to 140°F)
Storage Temperature Range -40° to 70°C (-40° to 15 8°F)
Operating Humidity Range <95% RH non-condensing
Agency Approvals:
US and Canada (cULus) UL508 (open ty pe device)
* Meter accuracy specied with conduc tors centered in the CT window.
** For amperages greater than 2400A, see App Note VN19, www.veris.com/applicationnotes.aspx
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).
INSTALLATION GUIDE
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
Modifications to this product without the express authorization of
Veris Industries nullify this statement.
For use in a Pollu tion Degree 2 or bet ter environment only. A Pollut ion Degree 2 environme nt must
control conductive pollution and the possibility of condensation or high humidity. Consider the
enclosure, t he correct use of ven tilation, thermal pro perties of the equ ipment, and the relatio nship
with the env ironment. Installat ion category: CAT II or C AT III
Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other count ries.
TABLE OF CONTENTS
Quick Install1
Operation2
Product Identication2
Dimensions2
Product Diagram2
Installation3
Wiring4
Data Outputs4
Address Setup5
Modbus Register Addressing6
Using Integer Data Types8
Notes10
Troubleshooting10
Page 2
H8035/H8036
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 Basic/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.
PRODUCT IDENTIFICATION
Modbus Enhanced Data Stream Power Transducers*
MODELMAX. AMPSCT SIZE
H8036-0100-2100SMALL
H8036-0300-2300SMALL
H8036-0400-3400MEDIUM
H8036-0800-3800MEDIUM
H8036-0800-4800LARGE
H8036-1600-41600LARGE
H8036-2400-42400LARGE
DIMENSIONS
B
C
A
B
C
A
B
C
A
F
SMALL
100/300 Amp
A = 3.8" (96 mm)
D
E
F
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)
MEDIUM
400/800 Amp
A = 4.9" (125 mm)
D
E
F
B = 2.9" (73 mm)
C = 2.5" (62 mm)
D = 1.2" (30 mm)
E = 5.2" (132 mm)
F = 6.0" (151 mm)
LARGE
800/1600/2400 Amp
A = 4.9" (125 mm)
D
E
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)
*H8036 models work with H8920-1 LON nodes
Modbus Basic Power Transducers*
MODELMAX. AMPSCT SIZE
H8035-0100-2100SMALL
H8035-0300-2300SMALL
H8035-0400-3400MEDIUM
H8035-0800-3800MEDIUM
H8035-0800-4800LARGE
H8035-1600-41600LARGE
H8035-2400-42400LARGE
*H8035 models work with H8920-5 LON nodes
PRODUCT DIAGRAM
®
Enercept
5
4
3
1. Voltage leads
2. Fuses
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 exceeded.
5. Modbus address switches
6
2
1
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.
Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other count ries.
Page 3
H8035/H8036
Wire tie
SHIELD
SHIELD
S
S
SHIELD
120Ω
Terminator
TM
INSTALLATION
Disconnect and lock out power before installation.
The Enercept meter, including the current transformers (CTs), voltage connection
fuses, and fuse pack, 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. Consider the following installation conditions 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 gut ter of equipment may aect the thermal
performance of the equipment.
• Consider the arrangement of CTs within the equipment to ensure the
correct bending radius of conductors.
• Review the arrangement and location of the CTs within the equipment.
Use appropriate support for the CT to prevent undue strain on the
conductor.
ADDRESS
1. Choose a unique address and set the switches for that address as
shown in the Address Selec tion 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.
1
2
4
8
16
32
INSTALLATION GUIDE
4. Remove the terminal block and attach the RS-485 wires. Observe (+), (-), and
Shield polarity. Insulate any exposed wiring.
5. For information regarding software setup, see the Modbus protocol specications
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
3. Snap the CT onto the conductor.
Connect CTs to the correspondingly
colored voltage leads. 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.
Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other count ries.
Page 4
H8035/H8036
TM
INSTALLATION GUIDE
WIRING
ØB
ØA
ØC
120
ØB
Neutral
120
ØA
Typical 208/480 VAC 3Ø, 3- or 4- Wire Installation
Typical 240/120 VAC 1Ø, 3-Wire Installation
MODBUS RS-485 LINE
MODBUS RS-485 LINE
DATA OUTPUTS
H8035
kWh, consumption
Reset kWh
kW, demand
H8036
kWh, consumption
kW, real power
kVAR, reactive power
kVA, apparent power
Power fac tor
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
To additional MODBUS Devices
Typical 277 VAC 1Ø, 2-Wire Installation
Neutral
277
ØA
MODBUS RS-485 LINE
To additional MODBUS Devices
Note: The Enercept cannot communicate on the net work bus without power.
Therefore, it is best to connect the voltage lea ds ahead of switching devices.
Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other count ries.
Page 5
H8035/H8036
TM
INSTALLATION GUIDE
ADDRESS SETUP
Set these switches to assign a unique address before connecting the device to the Modbus RS-485 line. Each Modbus device must have a unique address. If two devices are
given the same address, neither device will be able to communicate.
Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other count ries.
Page 6
H8035/H8036
TM
INSTALLATION GUIDE
MODBUS REGISTER ADDRESSING
This table lists the addressed assigned to each data point. Registers are read MostSignicant 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 Signicant Word
(MSW) is in the lower address of the register pair, while the least Signicant Word (LSW) is in the upper address.
Modbus RTU function codes suppor ted: 3=read holding registers; 6=preset single register; 17=report Slave I.D.
Quick Reference of the Most Common Data Points
AddressTypical
Offset
400010kWh Energy Consumption, LSWX
400021kWh Energy Consumption, MSWX
400032kW Real PowerX
40257 ---kWh Energy ConsumptionX
40258kWh Energy ConsumptionX
402590kWh Energy Consumption (same 40257)X
40260kWh Energy Consumption (same 40258)X
402612kW Real PowerX
40262kW Real PowerX
UnitsDescriptionInteger:
multiplier required
Float:
upper 16 bits
Complete Listing of Data Points
AddressTypical
Offset
400010kWh Energy Consumption, LSWX
400021kWh Energy Consumption, MSWX
400032kW Real PowerX
400043kVAR Reactive PowerX
400054kVA Apparent PowerX
400065 --- Power FactorX
400076 Volts Voltage, line to lineX
400087 Volts Voltage, line to neutralX
400098 Amps CurrentX
400109kW Real Power, Phase AX
4001110kW Real Power, Phase BX
4001211kW Real Power, Phase CX
4001312 --- Power Factor, phase AX
4001413 --- Power Factor, phase BX
4001514 --- Power Factor, phase CX
4001615 Volts Voltage, phase A-BX
4001716 Volts Voltage, phase B-CX
4001817 Volts Voltage, phase A-CX
4001918 Volts Voltage, phase A-NX
4002019 Volts Voltage, phase B-NX
4002120 Volts Voltage, phase C-NX
4002221 Amps Current, phase AX
4002322 Amps Current, phase BX
4002423 Amps Current, phase CX
4002524kW Average Real PowerX
4002625kW Minimum Real PowerX
4002726kW Maximum Real PowerX
UnitsDescriptionInteger:
multiplier required
Float:
upper 16 bits
Float:
lower 16 bits
Float:
lower 16 bits
40257 ---kWh Energy ConsumptionX
40258kWh Energy ConsumptionX
402590kWh Energy Consumption (same 40257)X
40260kWh Energy Consumption (same 40258)X
402612kW Real PowerX
40262kW Real PowerX
Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other count ries.
Page 7
H8035/H8036
TM
INSTALLATION GUIDE
AddressTypical
Offset
402634kVAR Reactive PowerX
40264kVAR Reactive PowerX
402656kVA Apparent PowerX
40266kVA Apparent PowerX
402678 --- Power FactorX
40268 --- Power FactorX
4026910 Volts Voltage, line to lineX
40270 Volts Voltage, line to lineX
4027112 Volts Voltage, line to neutralX
40272 Volts Voltage, line to neutralX
4027314 Amps CurrentX
40274 Amps CurrentX
4027516kW Real Power, phase AX
40276kW Real Power, phase AX
4027718kW Real Power, phase BX
40278kW Real Power, phase BX
4027920kW Real Power, phase CX
40280kW Real Power, phase CX
4028122 --- Power Factor, phase AX
40282 --- Power Factor, phase AX
4028324 --- Power Factor, phase BX
40284 --- Power Factor, phase BX
4028526 --- Power Factor, phase CX
40286 --- Power Factor, phase CX
4028728 Volts Voltage, phase A-BX
40288 Volts Voltage, phase A-BX
4028930 Volts Voltage, phase B-CX
40290 Volts Voltage, phase B-CX
4029132 Volts Voltage, phase A-CX
40292 Volts Voltage, phase A-CX
4029334 Volts Voltage, phase A-NX
40294 Volts Voltage, phase A-NX
4029536 Volts Voltage, phase B-NX
40296 Volts Voltage, phase B-NX
4029738 Volts Voltage, phase C-NX
40298 Volts Voltage, phase C-NX
4029940 Amps Current, phase AX
40300 Amps Current, phase AX
4030142 Amps Current, phase BX
40302 Amps Current, phase BX
4030344 Amps Current, phase CX
40304 Amps Current, phase CX
4030546kW Average Real PowerX
40306kW Average Real PowerX
4030748kW Minimum Real PowerX
40308kW Minimum Real PowerX
4030950kW Maximum Real PowerX
40310kW Maximum Real PowerX
UnitsDescriptionInteger:
multiplier required
Float:
upper 16 bits
lower 16 bits
Float:
Modbus addresses in the 4xxx x format follow the Modicon protocol specication 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 specied beginning at zero or 40000, instead of 40001. Programming code may also require addresses that correspond
to actual values transmitted, so a value of zero is used to request data beginning at Modbus address 40001.
Many applications use a single Modbus command 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 oating points the rst address used is typically 40259 (or 258 in the actual Modbus command). Although the rst oating point 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 reading a block of data, the “typical oset ” values
index to the data within the block.
“Multiplier required” indicates that multiplication is required to properly scale the integer value. See Using Integer Data Types section.
Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other count ries.
Page 8
H8035/H8036
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, multiply the value by a constant, as indicated in the table below.
Some data points require dierent 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.
Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other count ries.
Page 9
H8035/H8036
TM
INSTALLATION GUIDE
As an alternative to the table on the previous page, invert the values for use as divisors, in which 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.
Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other count ries.
Page 10
H8035/H8036
TM
INSTALLATION GUIDE
NOTES
1. DO NOT GROUND THE SHIELD INSIDE THE ELECTRICAL PANEL. Insulate all Modbus
wires, including the shield, to prevent accidental contact with high voltage
conductors.
2. Mechanically secure the Modbus cable where it enters the elec trical panel.
3. Connect all Modbus devices in a daisy-chain fashion. Use a 120 Ω terminating
resistor between (+) and (-) on the rst and last devices in the chain.
4. Use shielded twisted pair wire BELDEN 1120A or similar for the Modbus cable.
WARNING: After wiring, remove all scraps of wire or foil
shield from the electrical panel. This could be DANGEROUS if wire scraps come into contact with high voltage
wires!
TROUBLESHOOTING
ProblemSolution
Status LED does not blinkCheck fuses and voltage connections. Status LED should
Status LED blinks red.•IftheLEDblinksquickly(i.e.,about5blinksintwo
blink regardless of CTs, Modbus connections, and DIP
switch setting.
Set DIP switches to a dierent Modbus address not in
use.
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.
second), then 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.
Alta Labs, Enercep t, Enspector, Hawkeye, Trustat, Veris, and the Veris ‘ V’ logo are trademark s or registered tradema rks of Veris Industries, L.L .C. in the USA and /or other count ries.
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