EVT1-420-24L Eaton / Control Automation, EVT1-420-24L Datasheet

EVT1-420-24L

Manufacturer Part Number

EVT1-420-24L

Description

AC VOLTAGE TRANSDUCER, 120 MAX INPUT, 4-20MA OUT, LOOP POWERED

Manufacturer

Eaton / Control Automation

Datasheet

1.EVT1-420-24L.pdf (2 pages)

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MODELS COVERED IN THIS MANUAL

INTRODUCTION

Eaton’s VoltageWatch™ sensors are designed to

monitor AC voltages to allow a monitoring system to

detect conditions where supply voltage is above or

below normal. Detecting such conditions helps

users avoid problems commonly associated with

voltage irregularities, such as motor overheating,

damange to drives due to regeneration, and loss of

phase.

VoltageWatch sensors are available with a 4-20mA “True RMS”

output as standard, making them suitable for use in applications where

the waveform of the monitored voltage is distorted (such as noisy

environments, variable speed applications or SCR controlled loads).

MOUNTING

VoltageWatch sensors feature a 35mm wide DIN rail compatible

enclosure and are typically located in the same environment as motors,

contactors, heaters, pull-boxes, and other electrical devices.

Mounting on DIN Rail: Orient the sensor so that line voltage terminals

L1 and L2 are upright (on top) of the unit and snap securely onto DIN

rail. To remove, insert small screwdriver into depression on top of unit

and pry orange mounting tab up until unit dislodges from DIN rail.

Screw Mounting: Insert small screwdriver into depression on top of

unit and pry orange mounting tab up to reveal mounting hole. Continue

to pry tab up until it extends and snaps into place, about 0.25 inches.

Insert screws and mount to back plane or other suitably ﬂ at surface.

Effective: 15 October 2009

Catalog Number

EVT1-420-24L

EVT3-420-24L

EVT4-420-24L

IN ORDER TO AVOID ELECTRIC SHOCK OR OTHER POSSIBLE INJURY:

• TO AVOID ANY POTENTIAL FOR SHOCK OR SAFETY HAZARD,

• DO NOT USE THIS PRODUCT FOR HUMAN SAFETY APPLICATIONS.

• DO NOT USE THIS PRODUCT IN HAZARDOUS LOCATIONS (E.G.

• ENSURE THE PRODUCT IS PROPERLY WIRED TO THE CORRECT

ENSURE LINE VOLTAGE IS DISCONNECTED AT SOURCE BEFORE

WIRING TO UNIT.

IT WAS NOT DESIGNED, TESTED OR RECOMMENDED FOR THIS

USE.

EXPLOSIVE ATMOSPHERES). IT WAS NOT DESIGNED, TESTED OR

RECOMMENDED FOR THIS USE.

POWER SUPPLY FOR THE APPLICATION. REFER TO THE

SPECIFICATIONS AND WIRING DIAGRAMS IN THIS MANUAL.

Description

AC Voltage Sensor, 120V Max Input, 4-20mA Output, Loop Powered

AC Voltage Sensor, 240V Max Input, 4-20mA Output, Loop Powered

AC Voltage Sensor, 480V Max Input, 4-20mA Output, Loop Powered

WARNING

VoltageWatch™ Voltage Sensors

Installation Instructions

LINE VOLTAGE CONNECTION WARNING

CAUTION: TO AVOID ANY POTENTIAL FOR SHOCK OR SAFETY

HAZARD, ENSURE LINE VOLTAGE IS DISCONNECTED AT SOURCE

BEFORE WIRING TO UNIT.

INSTALLATION

The below steps can be followed to quickly install a VoltageWatch

sensor:

OUTPUT WIRING

Connect control or monitoring wires to the sensor using up to 14 AWG

copper wires. Tighten terminals to 7 inch-pounds torque. Be sure the

output load or loop power requirements are met (see diagram below).

OUTPUT GRAPH

(120, 240, 480V)

1. For your safety, ensure line voltage is disconnected at source

2. Ensure correct sensor model was chosen for input voltage of

3. Mount the sensor to a DIN rail or ﬂ at surface using integrated

4. Connect input voltage L1 and L2 and output wiring (24V + and -)

Line Voltage

Output

24V DC Power

before wiring this sensor

application

mounting clip on back side of sensor (see “Mounting” section for

more information)

using up to 14 AWG copper wires. Refer to “Output Wiring” section

for loop voltage and impedance recommendations.

(-) (+)

Transducer Output vs. Nominal Input Voltage

Page 1

Input Voltage (% FS)

(+)

(-)

Loop Voltage Requirements:

Where:

Note:

Add 1.3% error for 100K .

Load

Controller,

Meter...

= 12 + (L

= Minimum Loop Voltage

= Loop Resistance

recommended for output load.

x .02)

100

P52215 Rev 02

292181021

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EVT1-420-24L Summary of contents

Page 1

... POWER SUPPLY FOR THE APPLICATION. REFER TO THE SPECIFICATIONS AND WIRING DIAGRAMS IN THIS MANUAL. MODELS COVERED IN THIS MANUAL Catalog Number Description EVT1-420-24L AC Voltage Sensor, 120V Max Input, 4-20mA Output, Loop Powered EVT3-420-24L AC Voltage Sensor, 240V Max Input, 4-20mA Output, Loop Powered EVT4-420-24L ...

Page 2

P52215 Rev 02 292181021 TROUBLESHOOTING Problem Solution Sensor has no output Power supply is not properly sized. Check power supply voltage and current rating. Polarity is not properly matched. Check and correct wiring polarity. Output signal is Sensor model may ...

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