the user will be required to correct the interference at his own expense.
E8950
Modbus-to-BACnet Protocol Converter
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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.
Control system design must consider the potential failure modes of control paths and, for
certain critical control functions, provide a means to acheive a safe state during and after a
path failure. Examples of critical control functions are emergency stop and over-travel stop.
RoHS
Compliant
INSTALLATION GUIDE
SPECIFICATIONS
Downstream (Device) Interfaces:
Physical Layer 2-wire RS-4 85
Line Termination Internal, 120 Ω
Line Polarization Internal
Protocol Modbus RTU
Baud Rate 9600 to 384 00 (selections var y with Modbus devices used)
Number of Devices Supported up to 32 devices
(not to exceed 1000 tot al BACnet data objects)
Upstream (Controller) Ethernet Interface:
Physical Layer 10/100 Mb Ethernet
Protocol BACnet IP
Supply Voltage Class 2 9-30VDC or 12-24VAC
Nominal Current Draw @ 12V 240mA
Environmental:
Operating Temperature Range -40°C to 122°C (-40°F to 50°F)
Operating Humidity Range 5-90% RH noncondensing
Agency Approvals CE; TUV approved to UL916
WARNING
LOSS OF CONTROL
∙ Assure that the system will reach a safe state during and after a control path failure.
∙ Separate or redundant control paths must be provided for critical control functions.
∙ Test the eect of transmission delays or failures of communication links.
∙ Each implementation of equipment using communication links must be individually
and thoroughly tested for proper operation before placing it in service.
Failure to follow these instructions may cause injury, death or equipment damage.
1
For additional information about anticipated transmission delays or failures of the link, refer to
NEMA ICS 1.1 (latest edition). Safety Guidelins for the Application, Installation, and Maintenance of Solid-State Control or its equivalent in your specic country, language, and/or location.
Veris Industries assumes no responsibility for any consequences arising out of the use
of this material.
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.
1
PRODUCT IDENTIFICATION
E8950 Modbus-to-BACnet Protocol Converter
Supported Veris Meters***: H8035, H8036, E50C2,
E50C3*, E51C2, E51C3*, H81xx Series (with the
H8163-CB Modbus RTU Communication Board), H8238
Series, H8436 Series, H8437 Series, and E30Ax42**,
E30Bxxx**, E30Cxxx**, E31Bxxx**, E31Cxxx** Series
* The E8950 does not support the logging fu nctionality of these meters.
** Must include rmware version 1.011 or later.
*** E31A42 is suppor ted also, but requires some manua l conguration. Contact Veris Customer
Support for details.
Refer to Appendix 3 to determin e how many meters of each type can be supported.
PRODUCT OVERVIEW
The E8950 is a protocol conversion gateway that adapts supported Veris Modbus
RTU energy meters to building automation systems using BACnet protocol over
either IP or MS/TP physical layer interfaces. The E8950 supports up to 32 meters or
1000 total measurement points (number of output points varies by meter model). It
is pre-programmed to discover any supported meters and automatically congure
them for BACnet MS/TP and BACnet/IP. Each Modbus meter is presented as a BACnet
device, with a unique BACnet device_ID and a full set of measurement data and
conguration objects. Little conguration is required. The user sets up the system
using DIP switches and a built-in webserver graphical user interface (GUI).
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E8950
TM
INSTALLATION GUIDE
TABLE OF CONTENTS
Dimensions2
Quick Install2
Product Diagram3
LED Blink Codes3
Installation3
BACnet Programming Information8
Troubleshooting9
China RoHS Compliance Information9
Appendix 1: Data Objects for Supported Metering Devices
Enercept H8035 Series Meter10
Enercept H8036 Series Meter11
E50C2 and E50C3 (without logging) Uni-Directional Meter12
E51C2 and E51C3 (without logging) Bi-Directional Meter15
H8436 Series Meter20
H8437 Series Meter21
H8238 Multi-Circuit Meter24
H8163 Energy Meter with H8163-CB Modbus Communication Board28
E30A042, E30A142 Branch Circuit Power Meter31
E30Bxxx, E30Cxxx, E31Bxxx, E31Cxxx Branch Circuit Power Meter62
Appendix 2: DIP Switch Address Settings81
Appendix 3: Quick Guide to Calculate the Number of Meters Supported83
QUICK INSTALL
1. Connect the Modbus outputs of the metering devices to the Modbus terminals on
the 6-pin connec tor of the E8950. Daisy chain up to 32 metering devices to the
E8950 (provided that the total number of data points from all devices does not
exceed 1000).
2. Connect 9-30 VDC or 12-24 VAC to the power terminals on the 6-pin connector.
3. Use DIP switches S0 to S2 to set the Modbus baud rate on the E8950 to the same
rate as on all metering devices in the chain (factory default is 9600 baud).
4. Use DIP switch A7 to select the BACnet physical layer (MS/TP or IP).
5. If using BACnet MS/TP, connect the MS/TP connections to the BACnet interface.
Use DIP switches A0 to A6 to set the MAC address, and use DIP switches B0 to B3 to
set the MS/TP baud rate (factory default is 76800).
6. If using BACnet/IP, connect the E8950 to a PC using an ethernet cable and use the
GUI to set the IP address.
7. If the default network number (50) or the default Device_ID oset will cause
conicts, connect the E8950 to a PC using an ethernet cable and use the GUI to set
them appropriately.
8. Apply power to the E8950 and allow time to map all Modbus devices in the chain.
9. If the conguration is nal and will not change (no Modbus devices will be added,
removed, or changed), set the conguration mode to Normal (slide DIP switch A7
to the right) to speed future power-up cycles and prevent the auto-conguration
mechanism from overwriting when power is cycled.
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E8950
TM
PRODUCT DIAGRAM
BACnet MS/TP RS-485
DIP switches for setting MS/TP
MAC address, physical interface
type, MS/TP baud rate, Modbus
baud rate, and enabling auto-
discovery of meters
BACnet
IP/Ethernet
Port
Modbus RTU port RS-485 +, -, Shield
Power 9-30 VDC, 12-24 VAC
LED BLINK CODES
LEDColorDescription
SPLBlueReserved for future use. It may be on or o when the unit is on.
RUNDark GreenSlow blink (one second on, one second o) after the product
ERRRed• This illuminates blink briey when the Run LED rst comes on
RXYellowIndicates the device is receiving data on the Modbus link.
TXOrangeIndicates the device is transmitting data on the Modbus link.
PWRLight GreenThis is always on when the unit is powered.
has initialized (approximately 40 seconds after the unit is
powered or reset). This indicates normal operation.
(about 15 seconds after the unit is powered or reset).
• A steady red light indicates the unit needs attention.
INSTALLATION GUIDE
2. Connect the Modbus outputs of the devices to the Modbus side of the E8950.
120 Ω resistor on the last device in the daisy chain.
+
–
S
E8950Meters
• Wire the RS-485 bus as a daisy chain from device to device (up to 32
supported devices) without any stubs. Use a 120 Ω termination resistor
(not included) on the device farthest from the E8950. An additional 120 Ω
termination and Modbus line polarization are provided internal to the
E8950.
• Connect shield to earth ground somewhere on the RS-485 bus. The shield
is not internally connected to earth ground.
• Use wire with an insulation rating sucient for the location where the
meter is installed (e.g. Belden 1120A for installation in panels with up to
60 0 VAC).
3. Connect 9-30 VDC or 12-24 VAC to the +PWR/-PWR terminals of the 6-pin
connector.
Modbus Setup
Use DIP switches S0 to S2 to set the Modbus baud rate to 9600, 19200, or 38400. The
default baud rate is 9600, because this rate is available on all the devices supported
by the E8950. If all connected devices support a faster rate, use the highest rate in
common to improve performance. Set the E8950 and all Modbus devices in the series to the same rate. Set all devices to NO parity.
INSTALLATION
The E8950 can be DIN rail mounted, using the supplied DIN rail mounting clip, or
screw-mounted directly to a wall or other at sur face using the mounting holes on
either side of the housing.
6 Pin Connector
Pin #Pin Assignment
Pin 1RS-485 + (Modbus)
Pin 2RS-485 - (Modbus)
Pin 3RS-485 GND
Pin 4V +
Pin 5V -
Pin 6FRAME GND
1. Refer to the Installation Guides for the specic meter devices used to locate
instructions on connecting the meters and changing the conguration settings.
ModbusPower
Baud RateS0 – S2 DIP Switches
S0S1S2
9600 Baud
19200 Baud
38400 Baud
BACnet Physical Layer Selection
Use DIP switch A7 to select the BACnet physical layer. See
Appendix 2: DIP Switch Addresses section at the back of this
document for physical layer switch settings.
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E8950
TM
INSTALLATION GUIDE
MS/TP Setup (if using BACnet/IP, skip this section)
1. Connect the MS/TP connections on the E8950 to the eld controller or other
BACnet MS/TP interface according to its guidelines.
Pin
Pin #Pin assignment
Label
+Pin 1RS-485 + (MS/TP)
-Pin 2RS-485 - (MS/TP)
GPin 3RS-485 Shield
2. Set the MAC address using DIP switches A0-A6. See Appendix 2: DIP Switch
Addresses section at the back of this document for a full table of valid address
switch settings.
3. Set the MS/TP baud rate using DIP switches B0-B3.
BaudB0B1B2B3
9600
19200
38400
76800
G (Shield) – +
MAC
Address
Baud
Rate
Accessing the Graphical User Interface (GUI)
If the E8950 IP address parameters are already congured to work on the network
and the E8950 is being accessed from a PC on that same network, open a web
browser and enter the IP address of the E8950 into the address/URL led on the
browser. Press enter. The GUI will launch and appear, as shown, in the browser
window.
If the E8950 IP address parameters are not congured for the network, connect a PC
directly and access the GUI from it as follows:
4. Connect a standard CAT5 ethernet cable between a PC and E8950.
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E8950
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INSTALLATION GUIDE
5. Temporarily change the IP address of the PC to a static value on the same subnet
as the E8950. For example: If the E8950 is set to its factory default IP address of
192.168.1.24, set the PC to an unused static IP address on the 192.168.1.xxx subnet
(where xxx is any value between 1 and 255, except 24). Set the subnet mask to
255.255.255.0 (the screen captures in this example were taken using Windows XP;
other operating systems will look dierent).
a. Click , then
b. Right-click on the local area connection you are using and select Proper ties
d. Select <Use the following IP Address>. Make note of the IP address that
appears, then enter the static IP address (e.g. if the E8950 is still set to its
default address of 192.168.1.24, then change it to 192.168.1.100). Enter for the
255.255.255.0 subnet mask. Click OK.
Enter static
IP address
Enter subnet
mask
e. Click Close.
c. Highlight Internet Protocol (TCP/IP) and select Properties
Select protocol
Click Properties
6. Open a PC web browser and enter the IP address of the E8950 (default address
is 192.168.1.24) to access the E8950 GUI. The GUI will launch and appear in the
browser window.
7. When nished using the GUI, unplug the ethernet cable from the PC and restore
the IP settings as needed.
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E8950
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INSTALLATION GUIDE
Using the GUI to Set the E8950 Internal Network Number or the Device_ID
Offset
Access the GUI according the instructions in the “Accessing the Graphical User
Interface (GUI)” section.
The home screen on the GUI shows the current values used for the oset used to
assign Device_IDs in discovery mode and the network number assigned to the
internal virtual network used by the E8950 to manage the Modbus devices attached.
Using the GUI to set up the E8950 IP address for use on your network
1. Access the GUI according the instructions in the “Accessing the Graphical User
Interface (GUI)” section. To set IP address parameters, click the button labeled
“Diagnostics and Debugging.”
The Diagnostics screen appears.
The oset used to assign Device_IDs in discovery mode is the variable labeled BN_
Node_Oset. Enter a dierent value here and click submit. The new value is rst used
at the next power-up or system restart. Valid Device_ID numbers range from 1 to
4194303. Since the numbers assigned during discovery are the sum of the Oset and
the Modbus address (which can be any value from 1-255), the Oset values entered in
the GUI must be less than 4194057.
The internal virtual network used by the E8950 to manage the Modbus devices
attached is the variable labeled BN_Network_Nr. Enter a dierent value here and
click submit. Valid network numbers range from 1 to 65534; if other values are
entered, the network number defaults to 5. The new value is rst used at the next
power-up or system restart. If using a BACnet router, it is recommended that the
router also be restarted after the E8950 has completed discovery, when the network
number is changed.
2. Have the desired IP settings ready in advance (contact the system administrator).
IP parameters for use with BACnet IP are static, not dynamic.
3. Set the IP address for use on the BACnet/IP network:
a. From the navigation tree (lef t column) on the GUI, click on Setup and then
Network Set tings to enter the Edit IP Address Settings menu.
b. Enter the desired IP address in the N1_IP_Address eld (in the format xxx.xxx.
xxx.xxx)
c. If necessary, change the Subnet Mask by entering the appropriate new value in
the N1_Netmask eld
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E8950
TM
INSTALLATION GUIDE
d. If the E8950 is connected to an ethernet gateway, enter its IP address in the
Default Gateway eld.
e. Click the Update IP settings button. The E8950 will change its settings and
restart. The GUI will not connect again until the E8950 is installed on the network
that matches those settings and the new IP address is entered into a web browser
on a PC properly congured for that network.
Profile Assignment
Prole assignment is automatic. Upon power-up/reset, with the device in Discovery
mode (DIP switch S3 is to the right), each Modbus address is queried for a slave ID.
Any devices that respond with a slave ID matching a supported device are given a
unique device object and a full set of data objects to match the device.
All supported Veris meters are discovered and assigned one of the proles (see
Appendix 1) if they are connected, powered, and congured properly.
The Add/Remove/Edit buttons on the GUI can be used to alter the assignments,
but this is not recommended for general use, as the proles could be assigned to
products they do not support. If a meter is not discovered because it is not connected,
powered, or congured properly, adding the prole manually will not make it work.
Any changes to the prole assignments made manually through the GUI will be
discarded when the E8950 is power-cycled or reset in Discovery mode.
Turn on the E8950
1. Set the conguration mode switch (S3) to the Discovery
position.
2. Apply power to the E8950. It can take up to 2-3 minutes to
discover all the Modbus RTU meters, build a conguration
le, and install the device on BACnet MS/TP. Scanning begins
at address 1 and continues in numerical sequence, mapping
meters as they are discovered. To shorten this time, use
lower Modbus addresses for the meters so that they will be
discovered and mapped more quickly. After the meters at the
lower addresses are discovered, the E8950 continues scanning
the remaining addresses in the background, without aecting
operation.
BACnet Network Management – Important Steps to Avoid Conflicts
BACnet conguration uses two default settings that might need to be changed,
depending on the application.
a. Network ID number. Every logical network segment (IP subnet, MS/TP trunk, etc.)
in an entire system must have a (16-bit) network ID number that is unique from
all other BACnet networks in the enterprise. The BACnet network administrator
assigns this network ID so that no two ID numbers conict (whether using
BACnet/IP or MS/TP). Within each segment, every device is physically identied by
the combination of its 8-bit MAC address and the 16-bit network ID number.
To support multiple meters with a single E8950, the E8950 presents multiple
BACnet devices using a single (its own) MAC address. Each E8950 has its own
(internal) network ID, and it assigns a unique MAC address to each Modbus meter
attached, derived from the unique Device_IDs.
The E8950 factory default network address is 50 (decimal). If that number is
already in use in the system, assign a unique address using the graphical user
interface (GUI) on the built-in web server (this requires an ethernet connection
to a web browser; see BACnet/IP Setup section for instruc tions on changing
conguration settings using the GUI). Valid network numbers range from 1 to
65534; if other values are entered, the network number defaults to 5.
b. Device ID. Every BACnet device must have a BACnet Device_ID number that is
unique throughout the entire enterprise. Since the E8950 presents every Modbus
meter as a BACnet device, each connected meter that has a Modbus address must
have a BACnet Device_ID.
By default, each device discovered receives a Device_ID number that is the sum
of an oset value (default is 50000) and the Modbus address of the device. If
these Device_ID numbers cause a conict with existing devices in the system, or
if the system includes multiple E8950s, change the Device_ID numbers before
connecting the E8950 to the system. This can be managed one of two ways:
i. Connect to the E8950 directly (oine from the system) with the devices
(meters) connected to the E8950. After the E8950 discovers the devices
and assigns their default ID numbers, the user can choose new Device_ID
values and write these to each device using BACnet software. Subsequent
discoveries will not overwrite these values with defaults even if the E8950 is
then set to Discovery mode.
3. Optional: Lock the conguration. If no more devices will be added to or removed
from the Modbus trunk, lock the device mapping by setting the mode from
Discovery to Normal (slide DIP switch S3 to the left). This causes the E8950 to
set up the same devices at power-up, without repeating the Discovery process.
In Normal mode, the power-up time improves, but BACnet devices are created
whether the device responds or not, and new devices are not discovered.
ii. Use the GUI on the built-in web server to modify the oset value used
to calculate default Device_IDs in the discovery process (this requires an
ethernet connection to a web browser; see BACnet/IP Setup section for
instructions on changing conguration settings using the GUI). The E8950
retains this oset value and uses it to assign Device_ID numbers ever y time
power is cycled if the E8950 is in Discovery mode. Valid Device_ID numbers
range from 1 to 4194303. Since the numbers assigned during discovery are
Configuration ModeS3
Normal
Discovery
the sum of the Oset and the Modbus address (which can be any value from
1-255), any Oset values entered in the GUI must be less than 4194057.
Determine the best mode for the application. Discovery mode queries and rediscovers devices each time the E8950 is power-cycled or reset, so use this mode
when you anticipate adding, removing, or changing Modbus devices. Normal
mode creates the same set of BACnet device objects when the E8950 is powercycled or reset, even if objects change, are removed, or cease to communicate.
Power-up time is faster in Normal mode.
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Vendor Name: Veris Industries
BACnet Vendor ID 133
Product Name: E8950 Modbus-to-BACnet Protocol Converter
Product Model Number: E8950 w/Modbus Energy Meter
Product Description: Modbus-to-BACnet Protocol Converter
Protocol Conversions: Converts Modbus RTU to BACnet IP and BACnet MS/TP for supported products from Veris Industries
BACnet Protocol Version: Version 1 Revision 12
BACnet Standardized Device Prole (Annex L) – [Note: E8950 is a gateway device]
• BACnet Application Specic Controller (B‐ASC)
BACnet Interoperability Building Blocks Supported (Annex K):
• K.1.2 BIBB ‐ Data Sharing ‐ ReadProperty‐B (DS‐RP‐B)
• K.1.4 BIBB ‐ Data Sharing ‐ ReadPropertyMultiple‐B (DS‐RPM‐B)
• K.1.8 BIBB ‐ Data Sharing ‐ WriteProperty‐B (DS‐WP‐B)
• K.1.10 BIBB ‐ Data Sharing ‐ WritePropertyMultiple‐B (DS‐WPM‐B)
• K.1.12 BIBB ‐ Data Sharing ‐ COV‐B (DS‐COV‐B)
• K.2.2 BIBB ‐ Alarm and Event‐Notication Internal‐B (AE‐N‐I‐B)
• K.2.5 BIBB ‐ Alarm and Event‐ACK‐B (AE‐ACK‐B)
• K.2.11 BIBB ‐ Alarm and Event‐Information‐B (AE‐INFO‐B)
• K.5.22 BIBB ‐ Device Management – List Manipulation‐B (DM‐LM‐B)
Standard Object Types Supported
• Device Object
• Analog Input
• Analog Output*
• Analog Value
• Binary Input*
• Binary Output*
• Binary Value*
• Multi State Input*
• Multi State Output*
• Multi State Value*
• Notication Class Object*
* Supported by device driver, but not used by current device proles
Unsupported Properties and Restrictions
• Does not support BACnet CreateObject
• Does not support BACnet DeleteObject
• Does not support any proprietary properties
• No proprietary properties exist
• No range restrictions exist
• Max_Master is writable, but it reverts to 127 when the E8950 is reset or
powered-up.
Data Link Layer Options:
• BACnet IP, (Annex J)
• MS/TP master (Clause 9), baud rate up to 76.8 kbps
Networking Options:
• BACnet/IP Broadcast Management Device (BBMD)
• Registrations by Foreign Devices
Character Sets Supported:
• ISO 10646 (UTF-8) / ANSI X3.4
General Programming Information
The E8950, in Discovery mode, queries each Modbus address, from 1 to 247 for a slave
ID. For each address queried, if a meter responds with a slave_ID that matches those
supported by the E8950, a BACnet device object and a full set of data objects are
created (see Appendix 1).
The initial Object_Identier (Device_ID) property value of each device objec t
discovered is the sum of the Device_ID oset programmed into the E8950 and the
Modbus address of the meter. The factory default value of the oset is 50000; use
the GUI to change this value. The new value will be applied the next time the E8950
is power cycled or reset. Once a device’s Object_Identier is overwritten, changes
to the ID Oset will no longer aect that Object_Identier, even in Discovery mode.
Make further changes to the value by writing the Object_Identier property.
The default Object_Name property value of each device object is an abbreviated
name of the meter series discovered with an underscore and the Modbus address of
the meter appended to it. The Object_Name is a writable property. Once a device’s
Object_Name is overwritten, the Object_Name will not rever t to the initial default,
even in Discovery mode. Make fur ther changes to the value by writing the Object_
name property.
The default description property value of each device object is the rst 40 characters
of the Modbus slave ID returned by the meter discovered. The description is not a
writable property.
The E8950 supports Subscribe_COV, with default COV increment values assigned
as shown in the data object tables (see Appendix for value tables for each meter).
If these values are not appropriate for a specic application, write them as needed
when they are subscribed. On subsequent power c ycles, no subscriptions are active
and the COV increments return to their default values.
With few exceptions, any data values written to AV objects are accepted (without
error) by the data object and passed through to the corresponding Modbus register.
There is no direct indication via the BACnet protocol if invalid values are rejected.
After an invalid value is written to the Present_Value of an AV, subsequent reads
of that propert y return the new (invalid) value until the next time the E8950 scans
and updates the AV objects (this may take several seconds, depending on the overall
conguration and timing of the scan sequence). The tables in Appendix 1 specify valid
values for AV objects of each supported model.
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E8950
TM
TROUBLESHOOTING
ProblemSolution
Use the main screen of the E8950 GUI to conrm which meters have been discovered.
Verify that the Modbus device is a model specically supported by the E8950 (see Appendix 1).
Verify that the meter is connected to a control power source and is operating normally.
Verify that the Modbus 2-wire RS-485 connection is correctly wired from the E8950 to all
Modbus device is not discovered as expected.
other Modbus devices and that the chain is terminated at both ends with 120 Ω resistors (not
included).
Verify that the Modbus RTU baud is set to the same rate on all Modbus devices and that parity
on all devices is set to “none.”
Verify that the E8950 is powered and operating (the light green LED is on).
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E8950
TM
INSTALLATION GUIDE
APPENDIX 1: DATA OBJECTS FOR SUPPORTED METERING DEVICES
Enercept H8035 Series Energy Meters (all models)
The H8035 Series has 3 data objects and operates at 9600 baud.
Data VariableDescriptionBACnet
Object
Analog_input objects: (Read-only)
kWh Energy: TotalAccumulated Real EnergyAI1 kWH040259/40260
kW: TotalTotal Instantaneous Real PowerAI2 kW140261/40262
Analog_Value objects: (can be written as well as read)
kWh Energy ResetWrite zero to resetAV1 n/a3276740001
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TM
Enercept H8036 Series Energy Meters (all models)
The H8036 Series has 28 data objects and operates at 9600 baud.
E8950
INSTALLATION GUIDE
Data VariableDescriptionBACnet
Object
Analog_input objects: (Read-only)
kWh Energy: TotalAccumulated Real EnergyAI1 kWh 040259/260
kW: TotalTotal Instantaneous Real PowerAI2 kW 140261/262
kVAR: TotalTotal Instantaneous Reactive PowerAI3 kVAR 140263/264
kVA: TotalTotal Instantaneous Apparent PowerAI4 kVA 140265/266
PF: TotalTotal Power FactorAI5 PF 0.0140267/268
Volts: L-L AvgVoltage L-L average of active phasesAI6 Volts 540269/270
Volts: L-N AvgVoltage L-N average of active phasesAI7 Volts 540271/272
Amps: AvgCurrent Avg of active phasesAI8 Amps 540273/274
kW: Ph A Instantaneous Real Power Phase AAI9 kW 140275/276
kW: Ph B Instantaneous Real Power Phase BAI10 kW 140277/278
kW: Ph C Instantaneous Real Power Phase CAI11 kW 140279/280
PF: Ph A Instantaneous Power Factor Phase AAI12 PF 0.0140281/282
PF: Ph B Instantaneous Power Factor Phase BAI13 PF 0.0140283/284
PF: Ph C Instantaneous Power Factor Phase CAI14 PF 0.0140285/286
Volts: Ph A-B Instantaneous Voltage Phase A to Phase B AI15 Volts 540287/288
Volts: Ph B-C Instantaneous Voltage Phase B to Phase C AI16 Volts 540289/290
Volts: Ph A-C Instantaneous Voltage Phase A to Phase C AI17 Volts 540291/292
Volts: Ph A-N Instantaneous Voltage Phase A to Neutral AI18 Volts 540293/294
Volts: Ph B-N Instantaneous Voltage Phase B to NeutralAI19 Volts 540295/296
Volts: Ph C-N Instantaneous Voltage Phase C to NeutralAI20 Volts 540297/298
Amps: Ph A Instantaneous Current Phase AAI21 Amps 540299/300
Amps: Ph B Instantaneous Current Phase BAI22 Amps 540301/302
Amps: Ph C Instantaneous Current Phase CAI23 Amps 540303/304
kW: AverageAverage Real Power since last resetAI24 kW 140305/306
kW: MinMinimum Real Power since last resetAI25 kW 140307/308
kW: Max Maximum Real Power since last resetAI26 kW 140309/310
Analog_Value objects: (can be written as well as read)
kWh Energy ResetWrite Zero to resetAV1 n/a 3276740001
Alta Labs, Ene rcept, Enspector, Hawk eye, Trustat, Aerospon d, Veris, and the Veris ‘V ’ logo are tradem arks or registe red trademarks o f Veris Industries, L .L.C. in the USA and/or ot her countries.
E8950
TM
INSTALLATION GUIDE
E50C2 and E50C3 Uni-Directional Energy Meter
The E50C2/C3 has 63 data objects and operates at 9600, 19200 or 38400 baud. The E8950 does not support the logging functionality of the E50C3.
Data VariableDescriptionBACnet
Object
Analog_input objects: (Read-only)
kWh Energy: TotalAccumulated Real EnergyAI1 kWh 0259/260Resolution is limited by data type (when value exceeds 7
kW: TotalTotal Instantaneous Real PowerAI2 kW 1261/262
kVAR: TotalTotal Instantaneous Reactive PowerAI3 kVAR 1263/264
KVA: TotalTotal Instantaneous Apparent PowerAI4 kVA 1265/266
PF: TotalTotal Instantaneous Power FactorAI5 PF 0.01267/268
Volts: L-L AvgVoltage L-L average of active phasesAI6 Volts 5269/270
Volts: L-N AvgVoltage L-N average of active phasesAI7 Volts 5271/272
Amps: AvgCurrent Avg of active phasesAI8 Amps 5273/274
kW: Ph A Instantaneous Real Power Phase AAI9 kW 1275/276
kW: Ph B Instantaneous Real Power Phase BAI10 kW 1277/278
kW: Ph C Instantaneous Real Power Phase CAI11 kW 1279/280
PF: Ph A Instantaneous Power Factor Phase AAI12 PF 0.01281/282
PF: Ph B Instantaneous Power Factor Phase BAI13 PF 0.01283/284
PF: Ph C Instantaneous Power Factor Phase CAI14 PF 0.01285/286
Volts: Ph A-B Instantaneous Voltage Phase A to Phase B AI15 Volts 5287/288
Volts: Ph B-C Instantaneous Voltage Phase B to Phase C AI16 Volts 5289/290
Volts: Ph A-C Instantaneous Voltage Phase A to Phase C AI17 Volts 5291/292
Volts: Ph A-N Instantaneous Voltage Phase A to Neutral AI18 Volts 5293/294
Volts: Ph B-N Instantaneous Voltage Phase B to NeutralAI19 Volts 5295/296
Volts: Ph C-N Instantaneous Voltage Phase C to NeutralAI20 Volts 5297/298
Amps: Ph A Instantaneous Current Phase AAI21 Amps 5299/300
Amps: Ph B Instantaneous Current Phase BAI22 Amps 5301/302
Amps: Ph C Instantaneous Current Phase CAI23 Amps 5303/304
Reserved ReservedAI24 n/a 0305/306
Frequency Instantaneous FrequencyAI25 Hz 0.01307/308Returns QNAN if frequency is out of range (or no voltage
kVAh: TotalAccumulated Apparent Energy
Consumption
kVARh: TotalAccumulated Reactive Energy
Consumption
kVA: Ph A Instantaneous Apparent Power Phase AAI28 kVA 1313/314
kVA: Ph B Instantaneous Apparent Power Phase BAI29 kVA 1315/316
kVA: Ph C Instantaneous Apparent Power Phase CAI30 kVA 1317/318
kVAR: Ph A Instantaneous Reactive Power Phase AAI31 kVAR 1319/320
kVAR: Ph B Instantaneous Reactive Power Phase BAI32 kVAR 1321/322
kVAR: Ph C Instantaneous Reactive Power Phase CAI33 kVAR 1323/324
kW: DemandTotal Real Power Present DemandAI34 kW 1325/326
kVAR: Demand Total Reactive Power Present DemandAI35 kVAR 1327/328
kVA: Demand Total Apparent Power Present DemandAI36 kVA 1329/330
AI26 kWh 0309/310The UNITS property of this object reports kWh because there
AI27 kWh 0311/312The UNITS property of this object reports kWh because there
Units COV_
Increment
Modbus
Address
Comments
digits, reset more often to maximize resolution)
input present on Phase A)
is no unit type in this verision of the BACnet standard for
kVARh.
is no unit type in this verision of the BACnet standard for
kVARh.
Alta Labs, Ene rcept, Enspector, Hawk eye, Trustat, Aerospon d, Veris, and the Veris ‘V ’ logo are tradem arks or registe red trademarks o f Veris Industries, L .L.C. in the USA and/or ot her countries.
TM
E50C2 and E50C3 Uni-Directional Energy Meter, cont.
E8950
INSTALLATION GUIDE
Data VariableDescriptionBACnet
Object
kW: Max DemandTotal Real Power Max. DemandAI37 kW 0331/332This retains the largest value measured for Total Real Power
kVAR: Max Demand Total Reactive Power Max. DemandAI38 kVAR 0333/334This retains the largest value measured for Total Reactive
kVA: Max Demand Total Apparent Power Max. DemandAI39 kVA 0335/336This retains the largest value measured for Total Apparent
Pulse Counter 1 (Real
Energy)
Pulse Counter 2 Pulse Counter 2AI41 n/a 0339/340Contact closure counter for Reactive Energy pulse output.
kWh: Ph AReal Energy Consumption - Phase AAI42 kWh 1341/342
kWh: Ph BReal Energy Consumption - Phase BAI43 kWh 1343/344
kWh: Ph CReal Energy Consumption - Phase CAI44 kWh 1345/346
Max_PowerMax PowerAI45 kW 0135
Reserved_AI77(Reserved AI77)AI46 n/a 65535136
Energy_ResetsCount of Energy_ResetsAI47 n/a 0147
Reserved_AI79Reserved_AI79AI48 n/a 65535148
Reserved_AI80Reserved_AI80AI49 n/a 65535151
Power_Up_CountCount of Power Up CyclesAI50 n/a 0152
Output_CongOutput CongurationAI51 n/a 0153
Alarm Error BitmapBitmap of all alarm bitsAI52 n/a 0146
Analog_Value objects: (can be written as well as read)
Reset: write values to
reset congs
System Type (being
metered)
Pulse Counter 1 (Real Energy)AI40 n/a 0337/338Contact closure counter for Real Energy pulse output. Check
30078=Acc 21211=Dmd 21212=Max
16498=Puls
10=1ph 11=2ph 12=2ph+N 31=3ph-Y
40=3ph+N
AV1 n/a 0129Reset (aka Command Register):
AV2 n/a 013010 = Single Phase: A + N
Units COV_
Increment
Modbus
Address
Comments
Demand (AI34) for any single demand interval since the
Max Demand was last explicitly reset via AV1 (this also
resets when the demand interval changes).
Power Demand (AI35) for any single demand interval since
the Max Demand was last explicitly
reset via AV1 (this also resets when the demand interval
changes).
Power Demand (AI36) for any single demand interval since
the Max Demand was last explicitly
reset via AV1 (this also resets when the demand interval
changes).
Pulse setup on the LCD display for the weight of each pulse
output count. These values are derived from 32 bit integer
counter and roll over to 0 when the integer counters do.
Write 16498 (0x4072) to the Present_Value property of
Analog_Value object AV1 to reset both Pulse Counters to 0.
Check Pulse setup on the LCD display for the weight of each
pulse output count. These values are derived from 32 bit
integer counter and roll over to 0 when the integer counters
do. Write 16498 (0x4072) to the Present_Value property of
Analog_Value object AV1 to reset both Pulse Counters to 0.
- Write 30078 (0x757E) to clear all Energy Accumulators to
0 (All).
- Write 21211 (0x52DB) to begin new Demand Sub-Interval
calculation cycle. Takes eect at the end of the next 1
second calculation cycle. Write no more frequently than
every 10 seconds.
- Write 21212 (0x52DC) to reset Max Demand values to
Present Demand Values. Takes eect at the end of the next
1 second calculation cycle. Write no more frequently than
every 10 seconds.
- Write 16498 (0x4072) to clear Pulse Counts to zero.
- Read always returns 0.
11 = Single Phase: A + B
12 = Single Split Phase: A + B + N
31 = 3 phase Δ, A + B + C, no N
40 = 3 phase Y, A + B + C + N
Alta Labs, Ene rcept, Enspector, Hawk eye, Trustat, Aerospon d, Veris, and the Veris ‘V ’ logo are tradem arks or registe red trademarks o f Veris Industries, L .L.C. in the USA and/or ot her countries.
TM
E50C2 and E50C3 Uni-Directional Energy Meter, cont.
E8950
INSTALLATION GUIDE
Data VariableDescriptionBACnet
Object
CT Ratio Primary CT Ratio Primary (5A to 32000A)AV 3 Amps 0131Current Transducer Size - Primary Current Range
CT Ratio Secondar y CT Ratio Secondary (1=1VAC 3=1/3VAC)AV4 n/a 0132Current Transducer Type – Secondar y Interface
PT Ratio Potential Transformer Ratio (1 = no PT)AV 5 n/a 0133PT Ratio: The meter scales this value by 100 (i.e. entering 200
System Voltage Line-Line Voltage of Service MeteredAV 6 Volts 0134System Voltage: This voltage is line to line, unless in system
Display Units Display Units (0=IEC 1=iEEE)AV 7 n/a 0137Display Units:
Phase Loss Voltage
Threshold
Phase Loss Imbalance
Threshold
Num of Sub-Intrvl per
Dem Intrvl
Sub-Interval Length 10 to 32767 seconds (0= Sync-to-
Phase Loss Thresh (% of System Voltage)AV 8 Percent 0142Phase Loss Voltage Threshold in percent of System Voltage
Phase Loss Imbalance (% L-L variation)AV9 Percent 0143Phase Loss Imbalance Threshold in Percent. Default is 25%
1=most recent; n(2-6)=avg of last nAV10 n/a 0149Number of Sub-Intervals per Demand Interval. Sets the
AV11 Seconds 0150Sub-Interval Length in hundredths of a second. For sync-to-
Comms)
Units COV_
Increment
Modbus
Address
Comments
- Enter 1 for CTs with 1V outputs
- Enter 3 for CTs with 1/3V outputs
yields a potential transformer ratio of 2:1). The default is
100 (1.00:1), which is with no PT attached. Set this value
before setting the system voltage (below)
type 10 (AV2), which is line to neutral.
The meter uses this value to calculate the full scale power
for the pulse conguration (below), and as full scale for
phase loss (AV8). The meter will refuse voltages outside the
range of 82-660 volts when divided by the PT Ratio (above).
0 = IEC (U, V, P, Q, S)
1 = IEEE (default: VLL, VLN, W, VAR, VA)
(in object AV6). Default is 10 (10%). Any phase (as
congured in AV2) whose level drops below this threshold
triggers a Phase Loss alert. E.g., if the System voltage is set
to 480 V L-L, the nominal L-N voltage for each phase should
be 277 V. When the threshold is set to 10%, if any phase
drops below 27.7 V, or if any L-L voltage drops below 48 V
the corresponding phase loss alarm bit is true.
phase to phase dierence. For a 3-phase Y (3 + N) system
type (40 in object AV2), both Line to Neutral and Line to
Line voltages are tested. In a 3-phase Δ System type (31 in
object AV2), only Line to Line voltages are examined. In a
single split-phase (2 + N) system type (12 in object AV2),
just the line to neutral voltage are compared. E.g., if the
System Type is 40 (3-phase with Neutral) and the Phase
Loss Imbalance Threshold is 25%, a Phase Imbalance is
indicated when the L-L voltage between any t wo phases
drops to less than 75% of the L-L voltage between any
other two phases or when the L-N voltage of any phase
drops to less than 75% of the L-N voltage of any other
phase.
number of sub-intervals that make a single demand
interval. For block demand, set this to 1. Default is 1. When
Sub-Interval Length (in object AV11) is set to 0 (sync-tocomms mode), the value of this object is ignored.
comms mode, which allows manual triggering of demand
intervals and the logging of another Trend_Log record, set
this value to 0 and write 21211 to the reset register (object
AV1) each time the sub-interval must be externally reset.
Default is 90000 (15 minutes). This variable is tied directly
to the Log_Interval property of all three Trend_Log objects
(their value is always the same as this one). Changing any
of these four properties
changes all of them.
Alta Labs, Ene rcept, Enspector, Hawk eye, Trustat, Aerospon d, Veris, and the Veris ‘V ’ logo are tradem arks or registe red trademarks o f Veris Industries, L .L.C. in the USA and/or ot her countries.
E8950
TM
INSTALLATION GUIDE
E51C2 and E51C3 Bi-Directional Energy Meter
The E51C2/C3 has 94 data objects and operates at 9600, 19200 or 38400 baud. The E8950 does not support the logging functionality of the E51C3.
Data VariableDescriptionBACnet
Object
Analog_input objects: (Read-only)
kWh: NetAccumulated Net Real EnergyAI1 kWh 0257/258Resolution is limited by data type (when value exceeds 7
kVARh: Quad 1Reactive Energy: Quad 1 (Lags Import)AI4 n/a 0263/264The UNITS property of this object will report n/a because
kVARh: Quad 2Reactive Energy: Quad 2 (Leads Export)AI5 n/a 0265/266The UNITS property of this object will report n/a because
kVARh: Quad 3Reactive Energy: Quad 3 (Lags Export)AI6 n/a 0267/268The UNITS property of this object will report n/a because
kVARh: Quad 4Reactive Energy: Quad 4 (Leads Import)AI7 n/a 0269/270The UNITS proper ty of this object will report n/a because
kVAh: NetApparent Energy: NetAI8 n/a 0271/272The UNITS property of this object will report n/a because
kVAh: ImportApparent Energy: Import (Quads 1 & 4)AI9 n/a 0273/274The UNITS property of this object will report n/a because
kVAh: ExportApparent Energy: Export (Quads 2 & 3 )AI10 n/a 0275/276The UNITS property of this object will report n/a because
kW: Total NetTotal Net Instantaneous Real PowerAI11 kW 1277/278
kVAR: Total NetTotal Net Instantaneous Reactive PowerAI12 kVAR 1279/280
kVA: Total NetTotal Net Instantaneous Apparent PowerAI13 kVA 1281/282
PF: TotalTotal Instantaneous Power FactorAI14 PF 0.01283/284
Volts: L-L AvgVoltage L-L average of active phasesAI15 Volts 5285/286
Volts: L-N AvgVoltage L-N average of active phasesAI16 Volts 5287/288
Amps: AvgCurrent Avg of active phasesAI17 Amps 5289/290
FrequencyInstantaneous FrequencyAI18 Hz 0.01291/292Will return QNAN if frequency is out of range (or no voltage
kW: DemandTotal Real Power Present DemandAI19 kW 1293/294
kVAR: DemandTotal Reactive Power Present DemandAI20 kVAR 1295/296
kVA: DemandTotal Apparent Power Present DemandAI21 kVA 1297/298
kW: Total Import Max.
Demand
kVAR: Total Import Max.
Demand
kVA: Total Import Max.
Demand
Total Import Real Power Max. DemandAI22 kW 0299/300This retains the largest positive (Impor t) value measured for
Total Import Reactive Power Max.
Demand
Total Import Apparent Power Max.
Demand
AI23 kVAR 0301/302This retains the largest positive (Import) value measured for
AI24 kVA 0303/304This retains the largest positive (Import) value measured
Units COV_
Increment
Modbus
Address
Comments
digits; reset more often to maximize resolution)
there is no unit type in this verision of the BACnet standard
for kVARh.
there is no unit type in this verision of the BACnet standard
for kVARh.
there is no unit type in this verision of the BACnet standard
for kVARh.
there is no unit type in this verision of the BACnet standard
for kVARh.
there is no unit type in this verision of the BACnet standard
for kVAh.
there is no unit type in this verision of the BACnet standard
for kVAh.
there is no unit type in this verision of the BACnet standard
for kVAh.
input present on Phase A)
Total Real Power Demand (AI19) for any single demand
interval since the Max Demand were last explicitly reset
via AV1 (this is also reset when the demand interval is
changed).
Total Reactive Power Demand (AI20) for any single demand
interval since the Max Demand were last explicitly reset
via AV1 (this is also reset when the demand interval is
changed).
for Total Apparent Power Demand (AI21) for any single
demand interval since the Max Demand were last explicitly
reset via AV1 (this is also reset when the demand interval is
changed).
Alta Labs, Ene rcept, Enspector, Hawk eye, Trustat, Aerospon d, Veris, and the Veris ‘V ’ logo are tradem arks or registe red trademarks o f Veris Industries, L .L.C. in the USA and/or ot her countries.
TM
E51C2 and E51C3 Bi-Directional Energy Meter, cont.
E8950
INSTALLATION GUIDE
Data VariableDescriptionBACnet
Object
kW: Total Export Max.
Demand
kVAR: Total Export Max.
Demand
kVA: Total Export Max.
Demand
Reserved_AI28(Reserved_AI28)AI28 kVA 1311/312This retains the largest negative (Export) value measured
Total Export Real Power Max. DemandAI25 kW 0305/306This retains the largest negative (Export) value measured
Total Export Reactive Power Max.
Demand
Total Export Apparent Power Max.
Demand
Pulse Counter 1 Import Real EnergyAI29 n/a 0313/314Contact closure counter for Real Energy Import pulse output.
Pulse Counter 2 Export Real EnergyAI30 n/a 0315/316Contact closure counter for Real Energy Export pulse output
Accumulated Real Energy Import Ph AAI31 kWh 0317/318
Accumulated Real Energy Import Ph BAI32 kWh 0319/320
Accumulated Real Energy Import Ph CAI33 kWh 0321/322
Accumulated Real Energy Export Ph AAI34 kWh 0323/324
Accumulated Real Energy Export Ph BAI35 kWh 0325/326
Accumulated Real Energy Export Ph CAI36 kWh 0327/328
AI26 kVAR 0307/308This retains the largest negative (Export) value measured for
AI27 kVA 0309/310This retains the largest negative (Export) value measured
Units COV_
Increment
Modbus
Address
Comments
for Total Real Power Demand (AI19) for any single demand
interval since the Max Demand were last explicitly reset
via AV1 (this is also reset when the demand interval is
changed).
Total Reactive Power Demand (AI20) for any single demand
interval since the Max Demand were last explicitly reset
via AV1 (this is also reset when the demand interval is
changed).
for Total Apparent Power Demand (AI21) for any single
demand interval since the Max Demand were last explicitly
reset via AV1 (this is also reset when the demand interval is
changed).
for Total Apparent Power Demand (AI21) for any single
demand interval since the Max Demand were last explicitly
reset via AV1 (this is also reset when the demand interval is
changed).
Check Pulse setup on the LCD display for the weight of each
pulse output count. These values are derived from 32 bit
integer counter and roll over to 0 when the integer counters
do.
Write 16498 (0x4072) to the Present_Value property of
Analog_Value object AV1 to reset both Pulse Counters to 0.
(there is no physical output for this, but the pulses are
counted anyway). Check Pulse setup on the LCD display
for the weight of each pulse output count. These values
are derived from 32 bit integer counter and roll over to 0
when the integer counters do. Write 16498 (0x4072) to the
Present_Value property of Analog_Value object AV1 to reset
both Pulse Counters to 0.
Alta Labs, Ene rcept, Enspector, Hawk eye, Trustat, Aerospon d, Veris, and the Veris ‘V ’ logo are tradem arks or registe red trademarks o f Veris Industries, L .L.C. in the USA and/or ot her countries.
TM
E51C2 and E51C3 Bi-Directional Energy Meter, cont.
Alta Labs, Ene rcept, Enspector, Hawk eye, Trustat, Aerospon d, Veris, and the Veris ‘V ’ logo are tradem arks or registe red trademarks o f Veris Industries, L .L.C. in the USA and/or ot her countries.
TM
E51C2 and E51C3 Bi-Directional Energy Meter, cont.
E8950
INSTALLATION GUIDE
Data VariableDescriptionBACnet
Object
Analog_Value objects: (can be written as well as read)
Reset: write values to
reset congs
System Type (being
metered)
CT Ratio Primary CT Ratio Primary (5A to 32000A)AV 3 Amps 0131Current Transducer Size - Primary Current Range
CT Ratio Secondar y CT Ratio Secondary (1=1VAC 3=1/3VAC)AV4 n/a 0132Current Transducer Type – Secondary Interface
PT Ratio Potential Transformer Ratio (1= no PT)AV5 n/a 0133PT Ratio: The meter scales this value by 100 (i.e. entering 200
System Voltage Line-Line Voltage of Service MeteredAV 6 Volts 0134System Voltage: This voltage is line to line, unless in system
Display Units Display Units (0=IEC 1=iEEE)AV 7 n/a 0137Display Units: 0 = IEC (U, V, P, Q, S), 1 = IEEE (default: VLL,
Phase Loss Voltage
Threshold
Phase Loss Imbalance
Threshold
30078=Acc 21211=Dmd 21212=Max
16498=Puls
10=1ph 11=2ph 12=2ph+N 31=3ph-Y
40=3ph+N
Phase Loss Thresh (% of System Voltage)AV 8 Percent 0142Phase Loss Voltage Threshold in percent of System Voltage (in
Phase Loss Imbalance (% L-L variation)AV9 Percent 0143Phase Loss Imbalance Threshold in Percent. Default is 25%
AV1 n/a 0129Reset (aka Command Register):
AV2 n/a 013010 = Single Phase: A + N
Units COV_
Increment
Modbus
Address
Comments
- Write 30078 (0x757E) to clear all Energy Accumulators to
0 (All).
- Write 21211 (0x52DB) to begin new Demand Sub-Interval
calculation cycle. Takes eect at the end of the next 1 second
calculation cycle. For proper operation, write no more
frequently than every 10 seconds.
- Write 21212 (0x52DC) to reset Max Demand values to
Present Demand Values. Takes eect at the end of the next
1 second calculation cycle. For proper operation, write no
more frequently than every 10 seconds.
- Write 16498 (0x4072) to clear Pulse Counts to zero.
- Read always returns 0.
11 = Single Phase: A + B
12 = Single Split Phase: A + B +
31 = 3 phase Δ, A + B + C, no N
40 = 3 phase Y, A + B + C + N
- Enter 1 for CTs with 1V outputs
- Enter 3 for CTs with 1/3V outputs
yields a potential transformer ratio of 2:1). The default is 100
(1.00:1), which is with no PT attached. Set this value before
setting the system voltage (below)
type 10 (AV2), which is line to neutral.
The meter uses this value to calculate the full scale power for
the pulse conguration (below), and as full scale for phase
loss (AV8). The meter will refuse voltages that are outside
the range of 82-660 volts when divided by the PT Ratio
(above).
VLN, W, VAR, VA)
object AV6). Default is 10 (10%). Any phase (as congured in
AV2) whose level drops below this threshold triggers a Phase
Loss alert. E.g., if the System voltage is set to 480 V L-L,
the L-N voltage for each phase should be 277 V. When the
threshold is set to 10%, if any phase drops below 27.7, or if
any L-L voltage drops below 48 V, the corresponding phase
loss alarm bit will be true.
phase to phase dierence. For a 3-phase Y (3 + N) system
type (40 in object AV2), both Line to Neutral and Line to Line
voltages are tested. In a 3-phase Δ System type (31 in object
AV2), only Line to Line voltages are examined. In a single
split-phase (2 + N) system type (12 in object AV2), just the
line to neutral voltage are compared. E.g., if the System Type
is 40 (3-phase with Neutral) and the Phase Loss Imbalance
Threshold is 25%, a Phase Imbalance is indicated when the
L-L voltage between any two phases drops to less than 75%
of the L-L voltage between any other two phases or when
the L-N voltage of any phase drops to less than 75% of the
L-N voltage of any other phase.
Alta Labs, Ene rcept, Enspector, Hawk eye, Trustat, Aerospon d, Veris, and the Veris ‘V ’ logo are tradem arks or registe red trademarks o f Veris Industries, L .L.C. in the USA and/or ot her countries.
TM
E51C2 and E51C3 Bi-Directional Energy Meter, cont.
E8950
INSTALLATION GUIDE
Data VariableDescriptionBACnet
Num of Sub-Intrvl per
Dem Intrvl
Sub-Interval Length 10 to 32767 seconds (0= Sync-to-
1=most recent; n(2-6)=avg of last nAV10 n/a 0149Number of Sub-Intervals per Demand Interval. Sets the
Comms)
Units COV_
Object
AV11 Seconds 0150Sub-Inter val Length in hundredths of a second. For sync-to-
Increment
Modbus
Address
Comments
number of sub-intervals that make a single demand
interval. For block demand, set this to 1. Default is 1. When
Sub-Interval Length (in object AV11) is set to 0 (sync-tocomms mode), the value of this object is ignored.
comms mode, which allows manual triggering of demand
intervals and the logging of another Trend_Log record, set
this value to 0 and write 21211 to the reset register (object
AV1) each time the sub-interval must be externally reset.
Default is 90000 (15 minutes). This variable is tied directly
to the Log_Interval property of all three Trend_Log objects
(their value is always the same as this one). Changing any of
these four properties changes all of them.
Alta Labs, Ene rcept, Enspector, Hawk eye, Trustat, Aerospon d, Veris, and the Veris ‘V ’ logo are tradem arks or registe red trademarks o f Veris Industries, L .L.C. in the USA and/or ot her countries.
TM
H8436 Series Energy Meters (H8436V, H8436VB & H8436VBS)
The H8436 has 34 data objects and operates at 9600 or 19200 baud.
E8950
INSTALLATION GUIDE
Data VariableDescriptionBACnet
Object
Analog_input objects: (Read-only)
kWh Energy: TotalAccumulated Real EnergyAI1 kWh0259/260
kW: TotalTotal Instantaneous Real PowerAI2 kW1261/262
kVA: TotalTotal Instantaneous Apparent PowerAI3 k VA1263/264
Alta Labs, Ene rcept, Enspector, Hawk eye, Trustat, Aerospon d, Veris, and the Veris ‘V ’ logo are tradem arks or registe red trademarks o f Veris Industries, L .L.C. in the USA and/or ot her countries.
TM
H8437 Series Energy Meters (H8437V, H8437VB & H8437VBS)
The H8437 has 66 data objects and operates at 9600 or 19200 baud.
E8950
INSTALLATION GUIDE
Data VariableDescriptionBACnet
Object
Analog_input objects: (Read-only)
kWh Energy: TotalAccumulated Real EnergyAI1 kWh0259/260
kW: TotalTotal Instantaneous Real PowerAI2 kW1261/262
KVA: TotalTotal Instantaneous Apparent PowerAI3 k VA1263/264
Alta Labs, Ene rcept, Enspector, Hawk eye, Trustat, Aerospon d, Veris, and the Veris ‘V ’ logo are tradem arks or registe red trademarks o f Veris Industries, L .L.C. in the USA and/or ot her countries.
E8950
TM
H8437 Series Energy Meters (H8437V, H8437VB & H8437VBS), cont.
INSTALLATION GUIDE
Data VariableDescriptionBACnet
Object
kVA: Max Demand Total Apparent Power Max. DemandAI40 kVA0337/338
kVAR: Max Demand Total Reactive Power Max. DemandAI41 kVAR0339/340
Usage Hours Hours: >0.1A on at least one phaseAI42 Hours0341/342
Usage Minutes (0.0-
59.9)
Total Hours Total Hours since last timer resetAI44 Hours0345/346This combination timer counts the total time for which the
Total Minutes (0.0-
59.9)
Percent Usage Usage Hours / Total HoursAI46 Percent5349/350This timer counts the total time since the usage timer was
Volts THD: Ph A-N Instantaneous THD Voltage Ph A - Neutral AI47 Percent5351/352Percent Usage = Usage Time / Total Time .
Volts THD: Ph B-N Instantaneous THD Voltage Ph B - NeutralAI48 Percent5353/354
Volts THD: Ph C-N Instantaneous THD Voltage Ph C - Neutral AI49 Percent5355/356
Volts THD: Ph A-B Instantaneous THD Voltage Ph A - Ph BAI50 Percent5357/358
Volts THD: Ph B-C Instantaneous THD Voltage Ph B - Ph CAI51 Percent5359/360
Volts THD: Ph A-C Instantaneous THD Voltage Ph A - Ph CAI52 Percent5361/362
Amps THD: Ph A Instantaneous THD Current Phase AAI53 Percent5363/364
Amps THD: Ph B Instantaneous THD Current Phase BAI54 Percent5365/366
Amps THD: Ph C Instantaneous THD Current Phase CAI55 Percent5367/368
Analog_Value objects: (can be written as well as read)
Reset: write values to
reset congs
System Type 10; 11; 12; 30; 31; 32; 40; 42; 44AV2 n/a0130
CT Ratio Primary CT Ratio Primar y (1A to 32767A)AV3 n/a0131
CT Ratio S econdary CT Ratio Secondary (1=1AC 5=5A)AV4 n/a0132Not used on H84xxV (reads 32768)
PT Ratio Primary Potential Transformer Ratio PrimaryAV5 n/a0133
Minutes: >0.1A on at least one phaseAI43 Minutes10343/344
Total Minutes since last timer resetAI45 Minutes10347/348This combination timer counts the total time for which the
Count of Energy Accumulator Resets AI57 n/a0147
30078=Acc 14255=MnMx 21212=Dmd
10001=Tmr
AV1 n/a0129Reset:
Units COV_
Increment
Modbus
Address
Comments
absolute current on at least one phase is >0.1 Amp.
absolute current on at least one phase is >0.1 Amp.
reset.
bit 0: Phase A Voltage out of range
bit 1: Phase B Voltage out of range
bit 2: Phase C Voltage out of range
bit 3: Phase A Current out of range
bit 4: Phase B Current out of range
bit 5: Phase C Current out of range
bit 6: Frequency out of range or insucient voltage on Phase
A to determine frequency range of 45-65 Hz.
bit 7: Reserved for future use
bit 8: Phase Loss A
bit 9: Phase Loss B
bit 10: Phase Loss C
bit 11-15: Reserved for future use
- Write 30078 to clear all Energy Accumulators to 0 (All).
- Write 14255 to reset all Power Min/Max to Present Values
(H84xx EDS Only).
- Write 21212 to reset Peak Demand values to Present Demand
Values (H84xx EDS Only).
- Write 10001 to clear the Usage Timers to 0 (H84xx EDS Only).
Alta Labs, Ene rcept, Enspector, Hawk eye, Trustat, Aerospon d, Veris, and the Veris ‘V ’ logo are tradem arks or registe red trademarks o f Veris Industries, L .L.C. in the USA and/or ot her countries.
TM
H8437 Series Energy Meters (H8437V, H8437VB & H8437VBS), cont.
E8950
INSTALLATION GUIDE
Data VariableDescriptionBACnet
Object
PT Ratio Scale (0 =
No PT)
PT R atio Secondar y 100; 110; 115; 120AV7 n/a0135
Service Frequency 50 or 60 HzAV 8 Hz0136
Display Units Display Units (0=IEC 1=IEEE)AV 9 n/a0137
(Power) Demand Block
Interval
Num of Power Dem.
Block Sub-Intrvl.
0; 1; 10; 100 (0 = no PT)AV6 n/a0134
1 to 60 MinutesAV10 n/a0149(Power) Demand Block Interval – Used for PQS (P=Real Power
Subset of Block intervalAV11 n/a0150Number of Power Demand Block Sub-Intervals - Sets the
Units COV_
Increment
Modbus
Address
Comments
KW, Q=Reactive Power KVAR, and S=Apparent Power KVA)
demand calculations.
number of sub-intervals per Demand Block Interval (above).
The method of demand calculation is set as follows:
0 = Sliding Block. Like rolling block, but with a subinterval of
15 seconds; used for Demand Intervals ≤ 15 minutes, or 60
seconds for intervals > 15 minutes
1 = Block. Fixed block with no sub-intervals.
>1 = Rolling Block. The number of sub-intervals per block.
This value must divide evenly into the Block Demand Interval
(above).
For example, if the Demand Block Interval is 15 minutes, valid
Sub-Interval values are: 3, 5, or 15. If the value of 3 is chosen,
then there will be 3 subintervals of 5 minutes each.
Alta Labs, Ene rcept, Enspector, Hawk eye, Trustat, Aerospon d, Veris, and the Veris ‘V ’ logo are tradem arks or registe red trademarks o f Veris Industries, L .L.C. in the USA and/or ot her countries.
E8950
TM
INSTALLATION GUIDE
H8238 Series Multi-Circuit Meters (H8238, H8238E & H8238EL)
Each H8238 contains up to 8 logical meters, each with 73 data objects, for a total of 584 data objects for one H8238 if all 8 meters are enabled. The H8238 operates at 9600 or
19200 baud.
Data VariableDescriptionBACnet
Object
Analog_input objects: (Read-only)
kWh Energy: TotalAccumulated Real EnergyAI1 kWh 0259/260
kW: TotalTotal Instantaneous Real PowerAI2 kW 1261/262
kVAR: TotalTotal Instantaneous Reactive
Power
KVA: TotalTotal Instantaneous Apparent
Power
PF: TotalTotal Instantaneous Power
Factor
Volts: L-L AvgVoltage L-L average of active
phases
Volts: L-N AvgVoltage L-N average of active
phases
Amps: AvgCurrent Avg of active phasesAI8 Amps 5273/274
Frequency Instantaneous FrequencyAI9 Hz 0.01275/276Frequency: measured from the phase A voltage input.
kW: Ph A Instantaneous Real Power
Phase A
kW: Ph B Instantaneous Real Power
Phase B
kW: Ph C Instantaneous Real Power
Phase C
PF: Ph A Instantaneous Power Factor
Phase A
PF: Ph B Instantaneous Power Factor
Phase B
PF: Ph C Instantaneous Power Factor
Phase C
Volts: Ph A-B Instantaneous Voltage Phase A
to Phase B
Volts: Ph B-C Instantaneous Voltage Phase B
to Phase C
Volts: Ph A-C Instantaneous Voltage Phase A
to Phase C
Volts: Ph A-N Instantaneous Voltage Phase A
to Neutral
Volts: Ph B-N Instantaneous Voltage Phase B
to Neutral
Volts: Ph C-N Instantaneous Voltage Phase C
to Neutral
Amps: Ph A Instantaneous Current Phase AAI22 Amps 5301/302
Amps: Ph B Instantaneous Current Phase BAI23 Amps 5303/304
Amps: Ph C Instantaneous Current Phase CAI24 Amps 5305/306
Amps: Neutral Instantaneous Neutral CurrentAI25 Amps 0.1307/308Only Active in 6-Meter mode (reads 65535 in 8-meter
kW: AverageAverage Real Power since last
reset
AI3 kVAR 1263/264
AI4 kVA 1265/266
AI5 PF 0.01267/268
AI6 Volts 5269/270
AI7 Volts 5271/272
AI10 kW 1277/278
AI11 kW 1279/280
AI12 kW 1281/282
AI13 PF 0.01283/284
AI14 PF 0.01285/286
AI15 PF 0.01287/288
AI16 Volts 5289/290
AI17 Volts 5291/292
AI18 Volts 5293/294
AI19 Volts 5295/296
AI20 Volts 5297/298
AI21 Volts 5299/300
AI26 kW 1309/310
Units COV_
Increment
Modbus
Address
Comments
Range is 40 to 70 Hz. If voltage is insucient for an
accurate frequency determination, this register reads as
0xFFFF for integer and 0x7FC00000 for oat.
Alta Labs, Ene rcept, Enspector, Hawk eye, Trustat, Aerospon d, Veris, and the Veris ‘V ’ logo are tradem arks or registe red trademarks o f Veris Industries, L .L.C. in the USA and/or ot her countries.
E8950
TM
H8238 Series Multi-Circuit Meters (H8238, H8238E & H8238EL), cont.
INSTALLATION GUIDE
Data VariableDescriptionBACnet
Object
kW: MinMinimum Real Power since last
kW: Max Maximum Real Power since
Firmware Revision - Reset
System
Firmware Revision - Operating
System
Serial number MSWMSW of unsigned-long integerAI31 n/a 045
Serial number LSWLSW of unsigned-long integerAI32 n/a 046
Error Register0=no error; 1=NV Ram error;
Device ID15027=8-meter cong;
Meter Alarm Status (non-
latching)
Over Voltage Set CounterOver Voltage Set CounterAI36 n/a 050
Over Voltage Reset CounterOver Voltage Reset CounterAI37 n/a 051
Under Voltage Set CounterUnder Voltage Set CounterAI38 n/a 052
Under Voltage Reset CounterUnder Voltage Reset CounterAI39 n/a 053
Phase Loss A Set CounterPhase Loss A Set CounterAI40 n/a 054
Phase Loss A Reset CounterPhase Loss A Reset CounterAI41 n/a 055
Phase Loss B Set CounterPhase Loss B Set CounterAI42 n/a 056
Phase Loss B Reset CounterPhase Loss B Reset CounterAI43 n/a 057
Phase Loss C Set CounterPhase Loss C Set CounterAI44 n/a 058
Phase Loss C Reset CounterPhase Loss C Reset CounterAI45 n/a 059
Over Current Set CounterOver Current Set CounterAI46 n/a 060
Over Current Reset CounterOver Current Reset CounterAI47 n/a 061
Under Current Set CounterUnder Current Set CounterAI48 n/a 062
Under Current Reset CounterUnder Current Reset CounterAI49 n/a 063
Over kVA Set CounterOver kVA Set CounterAI50 n/a 064
Over kVA Reset CounterOver kVA Reset CounterAI51 n/a 065
Under kVA Set CounterUnder kVA Set CounterAI52 n/a 066
Under kVA Reset CounterUnder kVA Reset CounterAI53 n/a 067
Modbus addr as conf by DIP
switches
reset
last reset
Firmware Revision - Reset
System
Firmware Revision - Operating
System
others rsvd
15027=6-meter
bitmap of 8 alarms - bits 9-15
are all 0
integer value (1-247) addr of
1st meter
AI27 kW 1311/312
AI28 kW 1313/314
AI29 n/a 043
AI30 n/a 044
AI33 n/a 047Reports internal errors detected by the microcontroller.
AI34 n/a 048
AI35 n/a 049Holds the instantaneous state of the meter alarms. The
AI54 n/a 068
Units COV_
Increment
Modbus
Address
Comments
The ALIVE LED is steadily lit (not blinking) if any errors are
detected.
bits in this register are only set while the alarm condition
exists. These alarms cannot be reset by the user. Only set
the Over Voltage Alarm when its time-delay condition is
satised (see AV4).
bit 0 = over current
bit 1 = under current
bit 2 = over kVA
bit 3 = under kVA
bit 4 = over voltage
bit 5 = under voltage
bit 6 = phase loss A
bit 7 = phase loss B
bit 8 = phase loss C
bits 9-15 = 0
Alta Labs, Ene rcept, Enspector, Hawk eye, Trustat, Aerospon d, Veris, and the Veris ‘V ’ logo are tradem arks or registe red trademarks o f Veris Industries, L .L.C. in the USA and/or ot her countries.
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