Instruction Manual

ManualsBrandsSENVA ManualsEnergy MeterSENVA EMX True RMS Energy Meter

INSTALLATION INSTRUCTIONS

senvainc.com 1-866-660-8864 (F)1-503-296-2529 9290 SW Nimbus Ave. Beaverton Oregon 97008

EMX True RMS Energy Meter

With Traditional Metering CTs

BACnet/Modbus/Pulse

LIMITATION OF LIABILITY

Senva’s liability, whether in contract, in tort, under any

warranty, in negligence or otherwise shall not exceed the

amount of the purchase price paid by the purchaser for the

product. Under no circumstances shall Senva be liable for

special or consequential damages.

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

Failure to follow these instructions may cause serious injury or death

Failure to follow these instructions may cause injury, death or

equipment damage.

• 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.

DANGER

• Do not use this product for life safety applications.

• Do not install this product in hazardous or classied locations.

• Only qualied trade installers should install, program, maintain

and test system incorporated therein. Installer is responsible for

compliance of all applicable codes.

• Read, understand, and follow instructions thoroughly.

• The Standard CTs associated with this product must be mounted

inside a suitable re and electrical enclosure. For safe electrical work

practices, see NFPA 70E in the USA or applicable local standards and

codes.

• Replace all doors, covers, and protective devices before powering

the equipment.

• 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 o. DO NOT depend on this product for voltage indication.

• The installer is responsible for conformance to all applicable codes.

• For use with Listed Energy Monitoring Current Transformers.

• Use Copper Conductors Only

• Per IEC 61010-1 section 8.2.2 “impact test”, this product tested with

energy of 2J (reduced from 5J) code: IK07

WARNING

FEATURES

The Senva EMX Advanced Energy Meter is a 3 channel True

RMS energy meter featuring a color OLED display for simple

commissioning and monitoring. The EMX meets ANSI C12.20

Class 0.2 Standards. The EMX supports both BACnet MS/TP and

Modbus RTU protocols and also includes 2 pulse inputs and 2

pulse outputs.

The EMX supports metering CTs with either a 0.333V voltage

output or di/dt signal. The EMX is a class 2 low voltage device

for mounting exibility. See Specications section for

recommended conductor gauge and terminal tightening

torque.

MOUNTING

The Senva EMX Advanced Energy Meter is suitable for

installation on T35 DIN rail. Simply place unit approximately

centered over the mounted DIN rail and press upward until the

bottom clicks into place. Using a at-nose screwdriver, pull top

tab and apply pressure downward until unit is ush and release

the tab. See Dimensions section for details.

DIMENSIONS

4.183in

106.25mm

3.551in

90.20mm

2.990in

75.93mm

Data

Pulse

Status

Alarm

Press any key to wake

ESC

Press any

key to wake

EMX Advanced

Energy Meter

ESC

1.390in

35.30mm

2.055in

52.20mm

2.323in

59.00mm

.280in

7.10mm

.197in

5.00mm

1.134in

28.80mm

.098in

2.50mm

WIRING

EMX Wiring

Using Traditional metering CTs please wire according to the following

diagram.

Wiring for connections labeled “Class 2” shall be permanently

separated from those labeled “Class 1” by a minimum of 6

mm by means of clamping, routing, or equivalent means.

Press any key to wake

ESC

RS485 Ground/Shield

Pulse Input 1

Pulse Input Common

RS485 (+)

RS485 ( - )

COM

IN1

IN2

O1+

O1-

O2+

O2-

Pulse Input 2

Pulse Output 1+

Pulse Output 1 -

Pulse Output 2 +

Pulse Output 2 -

Phase R/L1/A Line

Phase S/L2/B Line

Phase T/L3/C Line

Neutral

A/L1

B/L2

C/L3

Phase R +

Phase R -

Shield

Phase S +

Phase S -

Shield

Phase T +

Phase T -

Shield

Press any

key to wake

EMX Advanced

Energy Meter

ESC

Class 1Class 2

Summary of content (4 pages)

PAGE 1
INSTALLATION INSTRUCTIONS EMX True RMS Energy Meter With Traditional Metering CTs BACnet/Modbus/Pulse FEATURES The Senva EMX Advanced Energy Meter is a 3 channel True RMS energy meter featuring a color OLED display for simple commissioning and monitoring. The EMX meets ANSI C12.20 Class 0.2 Standards. The EMX supports both BACnet MS/TP and Modbus RTU protocols and also includes 2 pulse inputs and 2 pulse outputs. The EMX supports metering CTs with either a 0.333V voltage output or di/dt signal.
PAGE 2
WIRING (CONT.) Voltage Wiring Typical Metering CT Wiring A compatible metering CT has either a 0.333V voltage output or di/dt signal. The wiring shown below corresponds to a Senva Metering CT and may not represent the coloring for all compatible CTs. + Shield UL 240.
PAGE 3
TROUBLESHOOTING BACnet/Modbus Quick Reference See below table to diagnose alarms present on EMX. The following section outlines some commonly utilized Modbus registers and BACnet objects for quick reference. For a complete list and description of each, please see the associated protocol guides: EM-RS485 BACnet Protocol Guide or EM-RS485 Modbus Protocol Guide. Power Alarms Negative power Phase Loss Low PF Corrective Action Verify CT orientation toward load. Check all phase voltages and current.
PAGE 4
SPECIFICATION Line/High voltage model Power Supply Input Frequency Range RS-485 Output 90-600VLL (+20%), 50/60Hz, 1-3 phase Power Consumption 4W Typ. Baud Rates RS-485 Loading 50/60 Hz 2-wire, BACnet MS/TP, Modbus RTU, Modbus ASCII 9600, 19200, 38400, 57600, 76800, 115200 1/4 unit Dual Outputs Import & Export Energy Outputs, Alarm Status, and Pulse Input Echo Type Pulse Output Alarm Configuration Ratings Solid state dry contact N.O. or N.C. 40VAC/DC, 300mA Max Pulse scaling 0.01, 0.