CARLO GAVAZZI EM540 Power Analyzer Instruction Manual

: June 15, 2024
: CARLO GAVAZZI

Table of Contents

CARLO GAVAZZI EM540 Power Analyzer
Cleaning
Service and warranty
UL notes
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

CARLO GAVAZZI EM540 Power Analyzer

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 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 by 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
(steadying): 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 phrase 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).

Installing EM540

CARLO-GAVAZZI-EM540-Power-Analyzer-fig-5

Mount EM540 on DIN rail.
Open terminal caps
Complete measuring input connections
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, RS485m or M-Bus. Turn on the power and check the correct operation. 8. Configure EM540.

CARLO-GAVAZZI-EM540-Power-Analyzer-fig-10