CARLO GAVAZZI EM540 Three Phase Energy Meter Installation Guide

: June 16, 2024
: CARLO GAVAZZI

Table of Contents

CARLO GAVAZZI EM540 Three Phase Energy Meter
Frequently Asked Questions (FAQ)
SPECIFICATIONS
Service and warranty
Display icons
DIMENSIONS
INSTALLATION INSTRUCTIONS
CONTACT
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

CARLO GAVAZZI EM540 Three Phase Energy Meter

Installation Instructions

Step 1: Preparing for Installation

Before installing the EM540 Power Analyzer, ensure that you have the following:

EM540 Power Analyzer unit
User manual and installation instructions
Required tools (e.g., screwdriver, pliers, etc.)

Step 2: Selecting Installation Location

Choose a suitable location for installing the EM540 Power Analyzer:

The installation location should be easily accessible for future maintenance.
Avoid installing near sources of heat, moisture, or direct sunlight.
The installation location should have proper ventilation to prevent overheating.

Step 3: Mounting the EM540 Power Analyzer

Follow these steps to mount the EM540 Power Analyzer:

Use the provided screws and wall anchors to securely mount the unit on a sturdy surface.
Ensure that the unit is mounted in a level position.
Tighten the screws to securely fix the unit in place.

Step 4: Connecting Power Supply

Connect the power supply to the EM540 Power Analyzer:

Refer to the user manual for specific details on power supply requirements.
Ensure that the power supply is turned off before making any connections.
Follow the provided wiring diagram to connect the power supply correctly.
Double-check all connections for accuracy and tightness.

Step 5: Connecting to the System

Connect the EM540 Power Analyzer to the three-phase or two-phase system:

Refer to the user manual for specific details on system connection requirements.
Ensure that the system is powered off before making any connections.
Follow the provided wiring diagram to connect the system correctly.
Double-check all connections for accuracy and tightness.

Frequently Asked Questions (FAQ)

Q: What is the operating temperature range for the EM540 Power Analyzer?
A: Please refer to the user manual for specific details regarding the operating temperature range of the EM540 Power Analyzer.
Q: What is the storage temperature range for the EM540 Power Analyzer?
A: Please refer to the user manual for specific details regarding the storage temperature range of the EM540 Power Analyzer.
Q: What is the protection degree of the EM540 Power Analyzer?
A: The EM540 Power Analyzer has an IP40 degree of protection. However, when installed in a distribution board with an IP51 degree, it provides IP51 protection.
Q: What is the maximum altitude at which the EM540 Power Analyzer can be used?
A: The EM540 Power Analyzer can be used at altitudes up to 2000 meters.
Q: Are the power consumption details available for the EM540 Power Analyzer?
A: Please refer to the user manual for specific details regarding the power consumption of the EM540 Power Analyzer.

SPECIFICATIONS

Operating temperature: From -25 to +55 °C/from -13 to +131 °F
Storage temperature: From -25 to +70 °C/from -13 to +158 °F
Protection degree: IP40 and IP51 (just in a distribution board with IP51 degree)
Overvoltage/Measurement category: III
Altitude: Max 2000 m
Consumption: <1.3 W/2.6 VA (W value not UL evaluated)
Digital output: VON 2.5 V ac/dc, max 100 mA. VOFF 42 V ac/dc max
Digital input: Contact measuring voltage: 5 V dc +/- 5%. Contact measuring current: 5 mA max
Weight: 270 g

Note: R.H. < 90 % non-condensing @ 40 °C / 104 °F.

Warnings

DANGER! Live parts. Heart attack, burns and other injuries.
Disconnect the power supply and loads before connecting/disconnecting the electrical wires.
Only use the analyzer at the specified voltage and current.
The analyzer should only be installed by qualified personnel experienced in working in safety.
Access to the terminals is reserved for qualified personnel for maintenance operations.
The system installer is liable for the safety of any system that includes the analyzer

NOTICE: only use the analyzer at the specified voltage and current to avoid permanent damage.
NOTICE: no one is authorized to open the analyzer. This operation is reserved exclusively for CARLO GAVAZZI technical service personnel. Protection may be impaired if the instrument is used in a manner not specified by the manufacturer.

This manual is an integral part of the product. It must be consulted for analyzer installation. It must be kept in good condition and in a clean location accessible to all operators.

Cleaning
Use a slightly dampened cloth to clean the display. Do not use abrasives or solvents.

Responsibility for disposal
The product must be disposed of at the relative recycling centres specified by the government or local public authorities. Correct disposal and recycling will contribute to the prevention of potentially harmful consequences to the environment and persons

Service and warranty

In the event of malfunction, fault, requests for information or to purchase accessory modules, contact the CARLO GAVAZZI branch or distributor in your country.
Installation and use of analyzers other than those indicated in the provided instructions void the warranty.

UL notes

The instrument must be installed taking care of leaving the external disconnecting device easily accessible.
Disconnect the power supply and loads before connecting/disconnecting the electrical wires.
An external switch or circuit breaker that must be mounted near the instrument is required.
To be used in a pollution degree 2 or better environment only
Indoor use only
Use copper conductors only
Auxiliary inputs/outputs (Digital input, Digital output, RS485, M-Bus) must be connected only to Limited-Energy Circuit under UL/CSA 61010-1 or Class 2 supply source which complies with the National Electrical Code (NEC), NFPA 70, Clause 725.121 and Canadian Electrical Code (CEC), Part I, C22.1
Evaluated as an open-type device; it is intended to be installed inside a dedicated NRTL-certified fire/electrical enclosure (overall enclosure) or end-product equipment enclosure; it is not intended for retrofit installations in the enclosure of switchgear or panel boards.

Display icons

Symbol Description

ALARM (blinking icon): the value of the variable has exceeded the threshold set.
WIRING ERROR (steady icons): a wiring fault has been detected, the control operates correctly if the selected system is 3Pn and for each phase, the power is positive (imported). For problem solutions, see “EM500 IM wiring solutions”
Serial communication state (reception/transmission)
The association of the phase terminal or the direction of the currents have been modified via UCS software to correct virtually a wiring fault. To view the current setup of the terminals, access the info screens ( MENU > INFO > TERMINAL).

DIMENSIONS

CARLO-GAVAZZI-EM540-Three-Phase-Energy-Meter-FIG-19

INSTALLATION INSTRUCTIONS

Installing EM540

Mount EM540 on DIN rail.
Open terminal caps
Complete measuring input connections.
8User manual UCS Desktop
Un (L-N) 120 … 240 V
Un (L-L) 208…415 V
Voltage tolerance -20, +15%
Frequency 50…60 Hz
Note: for MID versions the voltage range is limited to 3×120 (208)…3×230 (400)V, frequency to 50Hz.
Ib/Iref 5 A
Imax 65 A
Close the terminal caps
Seal the terminal caps (MID requirement).
Connect inputs and digital output, RS485 or M-Bus.
Turn on the power and check the correct operation.
Configure EM540.