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senva EM-RS485 Installation Instructions Manual

Protocol energy meter
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INSTALLATION INSTRUCTIONS
Protocol Energy Meter
EM-RS485 and Current/Voltage Transducers
The EM-RS485 is a three channel meter, capable of monitoring
single-phase, two-phase and three-phase systems, as well as
3 independent single-phase systems with one meter. The EM-
RS485 meter off ers BACnet MS/TP and Modbus RTU protocols
and 2 pulse inputs to maintain exibility during installation and
operation. The EM-RS485 is compatible with all sizes of current/
voltage transducers (CVTs). With the EM-RS485 intelligent meter
technology, the device self-con gures baud rate, serial format,
protocol, and address (BACnet only) - eliminating additional
con guration steps.
Each CVT is independently calibrated to measure and digitally
communicate power values to the meter. The CVT's exible
Rogowski coil makes installations less burdensome. The voltage
connections are made directly into each CVT - keeping all high
voltage away from the meter. Each CVT is rated from 90 to
600VAC.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
Failure to follow these instrutions may cause serious injury or death
• Read, understand and follow the instructions before installing this
product.
• The high voltage CVTs of this product must be mounted inside a
suitable re and electrical enclosure. Follow safe electrical work
practices. See NFPA 70E in the USA, or applicable local codes.
•
This equipment must only be installed and serviced by quali ed
electrical personnel having the skills and knowledge related to
the construction and operation of this electrical equipment and
installation, and has received safety training to recognize and
avoid the hazards involved. NEC Article 100.
• Do not use this product for life or safety applications.
•
Do not install this product in hazardous or classi ed locations.
• Product may use multiple voltage/power sources. Disconnect ALL
sources before servicing.
•
Use a properly rated voltage sensing device to con rm that power
is off . DO NOT depend on this product for voltage indication.
• Replace all doors, covers and protective devices before powering
the equipment.
• The installer is responsible for conformance to all applicable codes.
Failure to follow these instructions may cause injury, death or
equipment damage.
• The EM-RS485 and CVT sensors are designed to be used as a
system. DO NOT connect anything other than a Senva CVT sensor
to the RJ-11 jacks on the meter base.
•
If product is used in a manner not speci ed by the manufacturer,
the protection provided by the product may be impaired.
No responsibility is assumed by the manufacturer for any
consequences arising out of the use of this material.
WARRANTY DISCLAIMER
DO NOT modify the length of the CVT Data Communication Cable. Field
modi cations to the CVT Data Communication Cable will void factory
warranty.
LET'S GET STARTED!
Product Descriptions (page 2)
EM-RS485 product diagram
Current/Voltage Transducer (CVT) diagram
Mounting (page 2)
Mounting options for EM-RS485
Recommended mounting for maximum CVT accuracy
Wiring (page 3)
Typical single-phase and three-phase systems
Communication wiring options
Input wiring options
Normal Operation (page 4)
LED indicators for Normal, Warning, and Error conditions
Restore Factory Default Settings
Diagnostics (page 4)
Diagnostic Mode and Diagnostic Codes
Network Connectivity (pages 5-6)
Con guration Settings (page 7)
Address Assignment
Protocol Type Con guration
Baud Rate Con guration
Serial Format Con guration
PowerPrint Power Quality Alarm
View and Edit Settings (pages 8-9)
View Settings Mode
Edit Settings Mode
Speci cations (page 10)
SUPPORTING DOCUMENTS
EM BACnet Protocol Guide
www.senvainc.com/emrs485bn
EM Modbus Protocol Guide
www.senvainc.com/emrs485mb
Higher Reliability, Faster Installation, Superior Accuracy | Sense the diff erence |
NEED HELP? Call 1-866-660-8864
1

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Summary of Contents for senva EM-RS485

  • Page 1 Speci cations (page 10) Failure to follow these instructions may cause injury, death or equipment damage. • The EM-RS485 and CVT sensors are designed to be used as a SUPPORTING DOCUMENTS system. DO NOT connect anything other than a Senva CVT sensor to the RJ-11 jacks on the meter base.
  • Page 2 (water, gas, steam, etc). The EM-RS485 supports the use of all Senva CVT sensors, interchangeably. The EM-RS485 meter base is a class 2 low voltage device for mounting exibility. See Section 9 - Speci cations for recommended conductor gauge and terminal tightening torque.
  • Page 3 Use the jumpers to select the 120 ohm EOL resistor if the or circuit breakers.) Senva EM-RS485 meter is the last device in your network. If the meter is being installed within a network of other existing In the U.S. and Canada, disconnecting fuse holders or circuit RS485 devices, it may be necessary to use the 510 ohm biasing breakers can be used.
  • Page 4 Temperature warning Relocate meter to suitable environment Diagnostic Mode is only available if any LEDs display If code is not shown in table above, please contact Senva technical support: yellow or red in Normal Operation Mode. support@senvainc.com or (866) 660-8864...
  • Page 5 (BACnet only) for quick startup. The following details the steps required to add an EM-RS485 meter to an existing network. Separate steps are detailed based on the network protocol type (BACnet & Modbus).

  • Page 6: Network Activity

    Network Activity Diagnostic Mode Navigation Flowchart Once the EM-RS485 meter is properly con gured to a network, the RS485 LED will blink remain blinking green in response to network activity. If the RS485 LED appears yellow or red , see the Network Diagnostic Mode subsection below.

  • Page 7: Section 8 - View/Edit Settings

    Normal Operation, take the corrective con guration. action to resolve the installation error prior to enabling BACnet: If the EM-RS485 is connected to a BACnet network, the PowerPrint. meter will analyze the network traffi c to detect an unused MAC PowerPrint can be enabled through Section 8 - View/Edit Settings address.
  • Page 8 To view and edit the settings on the EM-RS485 meter, proceed through the steps below for manual con guration with the setup button and LEDs. For more advanced con guration, refer to the EM BACnet Protocol Guide or EM Modbus Protocol Guide documents.
  • Page 9 Steps 1-6 to navigate the The current setting will be displayed on the CVT LEDs in yellow Edit Settings Mode in the EM-RS485 meter: (representing Edit Mode). Press the Setup Button match the CVT LED pattern on the meter to one of the options in the Edit Codes column to the far right.
  • Page 10 Power Supply Input 12-30VDC/24VAC , 1.5W max,100mA max. RS-485 2-wire, BACnet MS/TP, Modbus RTU, Modbus ASCII Output Baud Rates 9600, 19200, 38400, 57600, 76800, 115200 RS-485 Loading 1/4 unit Conductor gauge 12-24 AWG Wiring Requirements Terminal torque rating 0.37 ft-lb (0.50 N•m) Input Rating 3.5 +/- 0.5 VDC, short circuit current is 10mA max Pulse Rate 50 Hz (default), con gurable up to 500 Hz Pulse Inputs...