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iDRN-ACV

AC VOLTAGE INPUT

General Description:

The iDRN Series of DIN rail-mountable signal conditioners

are available for Thermocouple, RTD, Strain, Process, AC

Voltage, AC Current and Pulse/Totalizer input types.

The factory calibrated signal conditioners are ideal for all

process and power monitoring applications, they feature

3-way isolation, high accuracy input, programmable outputs,

and are excellent front end interfaces for programmable logic

controllers or data acquisition systems. For maximum user

configurability the signal conditioners allow complete input-

output scaling via a RS-232 connection to any PC or PLC.

Software Description:

The signal conditioner configuration program is a MS

DOS/Windows program (this manual is for the Windows

version). It is designed especially for the iDRN Series Signal

Conditioner. This program will run on any PC with Windows

application and will start automatically.

Free Serial Communication software and ActiveX Controls

are on the CD-ROM enclosed with this shipment.

To download the latest software release

(or request a free CD-ROM) please go to:

www

.omega.com/software

What You need:

•Your choice of the signal conditioner

•IBM PC or compatible

•Windows software 3.1 or higher, or Windows 95/98

•RJ12 connector with telephone cable

•Adapter (DB9 or DB25 to RJ12)

Setting up your System

COMPUTER

CONNECTION

(DB9 or DB25)

RJ12 CONNECTOR

with CABLE

ADAPTOR (DB9/25 to RJ12)

#DB9-RJ12, #DB25-RJ12

COMPUTER

POWER

CONNECTION

RS-232 to

RS-485

CONVERTER

HALF-DUPLEX

#CAT-285

SIGNAL CONDITIONER MODULE

Operation:

Note: When connecting a voltage signal, extra care should be

taken to prevent electrical shock. Always turn the signal

power off before making connections to the signal conditioner.

ALWAYS ENSURE THAT THE MAXIMUM VOLTAGE

INPUT SIGNAL DOES NOT EXCEED

400 VOLTS AC.

PLEASE OBSERVE THE INPUT SIGNAL

CONNECTION SPECIFIED IN THE SECTION

BELOW. THIS DEVICE MUST ONLY BE INSTALLED BY

A PROFESSIONAL ELECTRICIAN.

Power Input and Analog Output Setup:

To connect the signal input proceed as follows:

1. Connect a DC power supply with an output voltage

between 10 to 32 Volt DC to the signal conditioner (J1).

Note: If power supply used has current limiting, it may not

be able to power the signal conditioners if the available output

voltage is around 10 Volt, since the peak current may reach

1 to 5 amp for a few milliseconds.

2. Determine the maximum voltage to be measured.

ANALOG OUTPUT LINEARITY:

0.1% of FS

ANALOG OUTPUT STEP RESPONSE TIME:

2 seconds to 99% of final value

INPUT POWER:

10 to 32 Volt DC

POWER CONSUMPTION:

2.4 watts (100 mA at 24 Vdc)

OPERATING AMBIENT:

-5 to +55 °C

STORAGE TEMPERATURE:

-40 to +85 °C

RELATIVE HUMIDITY:

90% at 40 °C non-condensing

DIMENSIONS:

Introduction:

The AC voltage input signal conditioners are high

performance instruments that measure AC voltages in 4

ranges which are as follows: 400 mV, 4 Volt, 40 Volt and 400

Volt. Key features of the signal conditioners are built in active

attenuator, scalable analog output and a simple RS232

interface for scaling analog output and range selection. The

RS232 interface may also be used for digital transmission of

input signal to a computer or a PLC. Additional features

include three way isolation between DC power, signal input

and analog output/RS232.

INPUT RANGES:

400 mV, 4V, 40 Volt, 400 Volt

FREQUENCY RANGE:

30 Hz to 1 KHz

INPUT IMPEDANCE:

2.1 Meg for all ranges.

ISOLATION:

Dielectric strength per 1 minute test based on EN 61010 for

50 Vdc or Vrms working voltage.

Three way Isolation:

• Power to Signal Input: 1800V Peak

• Power to Analog Output/Communication: 1800V Peak

• Signal Input to Analog Output/Communication: 1400V

COMMON MODE REJECTION:

100 dB

INPUT OVER-VOLTAGE PROTECTION:

10% Above full scale continuously.

100% Above full scale for 10 seconds.

ANALOG TO DIGITAL TECHNIQUE:

Dual slope

READ RATE:

3 readings/second

ACCURACY AT 25 °C:

400 mV, 4V, 40V and 400V ranges

49 Hz to 500 Hz ±0.2% of FS

30 Hz to 1KHz ±0.2% of FS ±10 counts

TEMPERATURE STABILITY:

400 mV and 40 Volt range 150 ppm/°C typical

4V and 400 Volt range 100 ppm/°C typical

STEP RESPONSE FOR RS232 OUTPUT:

2 seconds to 99% of the final value

(Filter time constant = 64)

RESPONSE TIME:

To verify the response time, check the carriage return <CR>,

it will be sent at the end of the response. You can send

another command after you receive the <CR>.

i.e. send: *X01

response: X01<DATA><CR>

WARM UP TO RATED ACCURACY:

30 minutes

ANALOG OUTPUT SIGNAL TYPE:

Voltage: 0-10 Volt, maximum current 10mA

Current: 0-20 mA or 4-20 mA, maximum compliance

voltage 10 Volts (maximum loop resistance 500Ω)

START HERE

SIG HI

N/C

SIG LO

Summary of content (2 pages)

PAGE 1
2 START HERE 3 INPUT RANGES: 400 mV, 4V, 40 Volt, 400 Volt ANALOG OUTPUT LINEARITY: 0.1% of FS FREQUENCY RANGE: 30 Hz to 1 KHz ANALOG OUTPUT STEP RESPONSE TIME: 2 seconds to 99% of final value The iDRN Series of DIN rail-mountable signal conditioners are available for Thermocouple, RTD, Strain, Process, AC Voltage, AC Current and Pulse/Totalizer input types.
PAGE 2
5 3. Determine the appropriate input signal range, i.e. 400 mV, 4 Volt, 40 Volt or 400 Volt. Also ensure that the frequency of AC source is within the specified limits. 4. Ensure that if the selected range is different from the default then change the internal range by using the Setup Software and select the appropriate range. 5. Connect the signal input to screw terminal, and ensure that the screws are tight.