Eurotherm WV478 Data Sheet

WV478-2000

ULTRA SLIMPAK® II

WV478

DC Powered Frequency Input

Isolating Signal Conditioner

High Accuracy Signal Conditioner with an

Isolated DC Voltage or Current Output

 Lower Power Requirements with SmartPower
 Improved Accuracy
 Bussed Power with Plug-in Power Clips
 Removable Terminals for Easy Service

Description

The Ultra SlimPak II is an exciting new line of isolating signal
conditioners from Action Instruments with greater accuracy and
better stability than virtually any other signal conditioners on the
market today. The Ultra SlimPak II features Smart Power, which
eliminates wasted power for low loop resistance loads in the
current output mode.

The WV478 accepts a frequency of up to 10kHz, with a minimum
input span of 2Hz. The input amplitude can range from 150mVp
to 150Vrms.

Smart Power

The Ultra SlimPak II uses Smart Power to control its output supply.
Smart Power automatically adjusts the the voltage to drive the
output loop to the required current. A low impedance current
loop will subsequently require less voltage than a loop with higher
impedance. Previous designs provided only a single supply at the
highest voltage required to drive the highest impedance load.
Using Smart Power results in power savings and reduces the
operating temperature of the signal conditioner.

 RoHS Compliant
 Touch Cal for Best Stability and Accuracy
 DIP Switch Configuration

Enhanced LED Diagnostics

Other than when executing the pushbutton calibration routine,
the LEDs blink under the following conditions:

GREEN:

Flashes at 2Hz when the input is under range.
Flashes at 8Hz when the input is over range.

RED:

Flashes at 2Hz when the output is under range.
Flashes at8Hz when the output is over range.

An Under Range condition exists when the signal is lower than the
operational low value minus 6.25% of the operational span. An
Over Range condition exists when the signal is higher than the
operational high value plus 6.25% of the operational span.

A voltage output short circuit may cause an under range condition
(RED blinking at 2Hz rate). A current output open circuit may cause
an over range condition (RED blinking at an 8Hz rate).

There could be two or more LEDs blinking at the same time, which
means the module has more than one error condition. Only when
all error conditions have been removed, will the LEDs be back to
normal (Green ON, Red and Yellow Off).

Configuring Modules

Unless otherwise specified, the factory presets the Model WV478
as follows:

Input: Frequency

Range: 0-1000Hz

Sensitivity: Low (set at 1Vrms)

Output: DC Current

Range: 4-20mA

Remote Cal: Off

Calibration

See the calibration flowchart in Figure 3. The complete calibration
procedure is contained in the Installation & Calibration Instruc­tions document, which is available on our website
(www.actionio.com). You can also obtain it by telephoning Action
technical support (

Note that Custom Calibration (option C620) is available from the
factory (settings MUST be within the units specifications). For a
C620, specify the following:

1. For other ranges, refer to the SWITCH SETTINGS table.
Reconfigure switches S1 and S2 for the desired input type and range.

2. Set position 1 of S1 to ON if a WVC16 will be utilized and remote
calibration capability is desired.

3. Set position 2 and 3 of S1 for the desired output type.

4. Set position 4 of S1 to ON for reverse output operation.

5. Set position 1 of S2 for the desired input sensitivity.

It is also possible to remotely select the setpoints using an Ethernet
connection and the optional WVC16 WebView Communications
Interface module.

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a) Input Frequency Range (for example: 0 to 5000Hz).

b) Input Amplitude (for example: 2.5 Volts, Peak).

c) Output Type and Range (for example: 4 to 20mA).

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ON = Closed

1

Remote Cal On
Remote Cal Off

2

Output Range: 4 to 20 mA

ON = Closed

3

On
Off

1

Input Sensitivity: 150mVp to 50Vrms

(see Table)

(see Table)

Figure 1: Switch Settings

Default Switch Settings

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Figure 2: Wiring Connections

Figure 3: Calibration Flowchart

Specifications

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Input:

Frequency Input Range: 0 to 10kHz
Minimum Input Span: 2Hz
Amplitude (switch selectable):

Low Range: 150mVp to 50Vrms
High Range: 500mVp to 150Vrms

Output:

Voltage: 0 to 10VDC;

Source Impedance: 10 ohms
Drive: 10mA

Current: 0 to 20mA

Source Impedance: >100k ohms
Compliance: 20V@20mA (1k ohms max)

Output Accuracy:

±0.05% of full scale local range

Response Time:

100mSec + 3 input cycles (10-90%) typical

Stability:

±100ppm of full scale/°C (±0.01%/°C)

Common Mode Rejection:

60Hz: >90dB
DC: >120dB

Isolation:

Input to Output to Power: 1800VDC

ESD Susceptibility:

Capable of meeting IEC801-2 level 3 (8kV)

Power:

9 to 30VDC
1W typical, 2W maximum

Host Module Interface:

IR Link

Size:

DIN rail case – refer to Dimensions drawing

Temperature Range:

Operating: 0°C to 60°C (32°F to 140°F)
Storage: -25°C to 85°C (-13°F to 185°F)

Humidity Range:

Operating: 15% to 95% RHNC @ 45°C
Storage: 90% RHNC @60°C for 24 hrs

Agency Approvals (EMC & Safety):

UL recognized per standard UL508 (File No.E99775)
CE Conformance per EMC directive 2004/108/EC and Low Voltage

directive 2006/95/EC (Input < 75VDC, only).

RoHS Compliant

Ordering Information

Specify:

1. Model:

WV478-2000

2. Optional Custom Factory Calibration (specify C620, see required

settings under "Calibration, page 2).

3. Accessories.

Accessories

All WV Series modules will mount on standard TS35 (model MD03)
DIN rail. In addition, the following accessories are available:

WVC16 Communications Interface

MD03 TS35 x 7.5 DIN Rail (2 meters)

WV905 24VDC Power Supply (0.5 Amp)

H910 24VDC Power Supply (1 Amp)
H915 24VDC Power Supply (2.3 Amp)

MB03 End Bracket for MD03

C650 Utility software for WVC16

Printed on recycled pape

Note that detailed installation instructions are available on our website.

Dimensions

Dimensions are in millimeters (inches)

Action Instruments

Chessell

721-0806-00-I 09/06 Copyright© Eurotherm, Inc 2006

Eurotherm