Veris Industries ENERCEPT H8035 User manual

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POWER MONITORING INSTALLATION GUIDE
Z201686-0G page 1 ©2008 Veris Industries USA 800.354.8556 or 503.598.4564 / suppor[email protected] 07083
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EnErcEpt®H8035/H8036
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
* Meter accuracy specified with conductors centered in the CT window.
quick install
Installer's Specifications
Modbus Energy Meter
Networked kW/kWh Transducers
US Patent No. 6,373,238
Disconnect and lock out power before installation.
Set the address switches located on the bottom of the CT.1.
Connect the voltage leads to the source to be monitored.2.
Snap the CT onto the conductor (observe color matching).3.
Connect the Modbus wires (observe polarity).4.

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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)
Modbus Basic Energy Meters*
Modbus Enhanced Data Stream Meters*
*H8036 models work with H8920-1 LON nodes
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
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
*H8035 models work with H8920-5 LON nodes
product identification

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H8035/8036 INSTALLATION GUIDE
Z201686-0G page 3 ©2008 Veris Industries USA 800.354.8556 or 503.598.4564 / suppor[email protected] 07083
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 meters 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 submetering, energy management, performance contracting, demand
limiting and cooling plant optimization. The 1% total system accuracy conforms to
ANSIC12.1 metering standards.
operation installation
Choose a unique address and set the switches for that address as1.
shown in the Address Selection Switches section. Only addresses 1
to 63 can be used.
product diagram
Fuse Pack
Enercept®
1
2
3456
Voltage Leads:1. Input range is 208 to 480V.
Fuses:2. Maximum current draw 60mA. Fuses provided by the factory are rated ½A,
600VAC, 200 KAIC. Replace only with fuses of the same type and rating.
Pulse Output connector3.
Status LED:4. 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.
Pulse Rate Switches:5. Used to set the pulse output rate.
External CTs:6. Permanently attached; do not disconnect or use with other power
meters.
Connect the voltage leads to the phase conductors, at a location that is not2.
normally turned off. Connect voltage leads on the Line side of the conductor to
ensure constant power to the meter. 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.
Snap the CT onto the conductor.3.
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.
Remove the terminal block and attach the RS-485 wires. Observe (+), (-), and4.
Shield polarity. Insulate any exposed wiring.
Wire tie
Color match CTs and voltage leads! Example: clamp the
red labeled CT around the power conductor connected to
the red voltage wire.
For information regarding software setup, see the Modbus protocol specifications5.
available at www.veris.com/Modbus/.
Check power reading (these calculations are approximations only).6.
Expected power:
kW = Volts x Amps x 1.732 x PF / 1000
kW = Horsepower x 0.746
Connecting H8000 Series meters to the load side of a
variable frequency drive will permanently damage the
electronics. Connect only to the line side of a VFD.
Disconnect and lock out power before installation.
RS-485
CONNECTION
STATUS
+
-
Shield
ADDRESS
1
2
4
8
16
32
SHIELD SHIELD
SS
SHIELD
120Ω
Terminator

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wiring
Typical 208/480 VAC 3Ø, 3- or 4- Wire Installation
Typical 240/120 VAC 1Ø, 3-Wire Installation
Typical 277 VAC 1Ø, 2-Wire Installation
notes
DO NOT GROUND THE SHIELD INSIDE THE ELECTRICAL PANEL. All Modbus wires,1.
including the shield, should be insulated to prevent accidental contact with high
voltage conductors.
The Modbus cable should be mechanically secured where it enters the electrical2.
panel.
All Modbus devices should be connected together in a daisy-chain fashion. The3.
first and last devices in the chain should have a 120Ω terminating resistor between
(+) and (-).
The Modbus cable should be shielded twisted pair wire BELDEN 1120A or similar.4.
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, demand
VAR, reactive power
VA, apparent power
Power factor
Average demand
Minimum demand
Maximum demand
Voltage, line-to-line
Voltage, line-to-neutral
Amps, average current
kW, demand ØA
kW, demand ØB
kW, demand 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
MODBUS RS-485 LINE
ØB
ØA
ØC
120
Neutral
120
MODBUS RS-485 LINE
To additional MODBUS Devices
ØA
ØB
Neutral
277
MODBUS RS-485 LINE
To additional MODBUS Devices
ØA
Note: The meter cannot communicate on the network bus without power. Therefore, it
is best to connect the voltage leads ahead of switching devices.

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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 conflicts with another device, both devices will be unable to communicate.
address selection switches

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modbus register addressing
This table lists the addressed assigned to each data point. Registers are read MostSignificant Byte (MSB) first. 32 bit floating point values are encoded per IEEE Standard 754. For
floating point format variables, each data point appears twice because two 16-bit addresses are required to hold a 32-bit float value. The 16 bit Most Significant Word (MSW) is
in the lower address of the register pair, while the least Significant 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.
Modbus Addr
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 Demand (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 Demand (power) X
40262 KW Demand (power) X
Modbus
Addr 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 Demand (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 Demand (power), phase A X
40011 10 KW Demand (power), phase B X
40012 11 KW Demand (power), phase C X
40013 12 --- Power Factor, phase A X
Quick Reference of the Most Common Data Points
Complete Listing of Data Points

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Modbus
Addr
Typical
Offset Units Description
INTEGER: multiplier required
FLOAT: UPPER 16 bits
FLOAT: LOWER 16 bits
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 Demand X
40026 25 KW Minimum Demand X
40027 26 KW Maximum Demand 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 Demand (power) X
40262 KW Demand (power) X
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 Demand (power), phase A X
40276 KW Demand (power), phase A X
40277 18 KW Demand (power), phase B X
40278 KW Demand (power), phase B X
Complete Listing of Data Points, cont.

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Modbus
Addr
Typical
Offset Units Description
INTEGER: multiplier required
FLOAT: UPPER 16 bits
FLOAT: LOWER 16 bits
40279 20 KW Demand (power), phase C X
40280 KW Demand (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 Demand X
40306 KW Average Demand X
40307 48 KW Minimum Demand X
40308 KW Minimum Demand X
40309 50 KW Maximum Demand X
40310 KW Maximum Demand X
Note: Modbus addresses in the 4xxxx format follow the Modicon protocol specification
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 specified 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 meter. For integers, the beginning address is 40001 (or zero in the
actual Modbus command), and for floats the first address used would typically be
40259 (or 258 in the actual Modbus command). Although the first float 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 firmware). When a block of data is read, the
“typical offset” 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.
Complete Listing of Data Points

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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
Unlike the floating-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 different 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.
using integer data types

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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 meter 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

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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.
Power meter interferes with
another device on the Modbus
Set DIP switches to a different 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.
Meter goes offline when load
is switched off.
Voltage leads must be connected on the Line
side of the conductor. The power meter cannot
communicate on the Modbus 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 meter can accurately measure these
low PFs, but few loads operate normally at such a
low power factor.