Eurotherm WV448 Data Sheet

WV448-2000

ULTRA SLIMPAK® II

WV448

DC Powered Bridge 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
 Optional E-mail Notification of Alarms

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 WV448 is a bridge input signal conditioner supporting bridge
input full scale ranges of ±5mV to ± 200mV, (default is ± 50mV). The
switch selectable output ranges are 0-10VDC, 0-20mA and 4-20mA.
All the input and output ranges are fully adjustable via pushbutton
calibration. The default output range is 4-20mA.

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
 120mA Excitation to Drive up to Four 350

Ohm Load Cells

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 at 8Hz 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 WV448
as follows:

Input: 0-30mV

(using ±50mV range)

Excitation: 10V

Output: 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 switch S1 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.

5. Set positions 4-6 of S1 for the desired input range.

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 Range.

b) Output Type, Range & Units (mA, V).

c) Excitation Voltage.

ON = Closed

4

3

Input Range: +/-50mV

(see Table)

On
Off

5

6

(see Table)

1

Remote Cal On
Remote Cal Off

2

Output Range: 4 to 20 mA

Default Switch Settings

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Figure 1: Switch Settings

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Figure 2: Wiring Connections

Figure 3: Switch Settings

Specifications

r

Inputs:
Full Scale Range: ± 5mV, ± 10mV, ± 20mV, ± 50mV, ± 100mV, ±200mV
Impedance: 1M ohms
Over-voltage: 400Vrms (intermittent); 264Vrms (continuous)
Operation: Direct or reverse acting
Bridge Excitation: 1 to 10VDC, 120mA
Input Accuracy: 0.015% of span
Pushbutton Adjustment:

(Inputs <10mV):

Effective zero offset:
Effective span turn down:

(Inputs <10mV):

Effective zero offset:
Effective span turn down: >50%

Local Range Selection: By DIP switch
Output:
Voltage:

0 to 10V (pushbutton adjust. to 75% of range)
Source Impedance: <10 ohms
Drive: 10mA

>95%

>95%

>50%

Current:

0 to 20mA (pushbutton adjust. to 75% of range)
(4mA min position available on range switch)
Source Impedance: >100k ohms

Compliance: 20V
Output Accuracy: 0.05% of Full Scale
Overall Accuracy: 0.065% of Full Scale
Output Ripple: 0.03% rms
Response Time: 150 mSec, 10 to 90%
Stability: ± 100ppm/°C
Common Mode Rejection: 120dB @ DC, >90dB @ 60Hz, or better
Isolation: 1800VDC or peak AC between input, output & power.
Size: DIN rail case – refer to Dimensions drawing
Operating Temperature: 0°C to +60°C (32°F to 140°F)
Storage Temperature: -25°C to +85°C (-13°F to 185°F)
Operating Humidity: 15% to 95% RH (non-condensing) at 45°C
Non-operating Humidity: 90% RH (non-condensing) at 60°C for 24hrs
Power: 9 to 30VDC, 1.5W typ, 3.5W max.
Agency Approvals (EMC & Safety):

UL recognized per standard UL508

(File No.E99775)

CE Conformance per EMC directive 89/336/EEC and Low Voltage

73/23/EEC (Input < 75VDC, only).

RoHS Compliant

Bridge Reference Designations

Ordering Information

Specify:

1. Model:

WV448-2000

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

Eurotherm

Eurotherm, Inc

Note that detailed installation instructions are available on our website.

Dimensions

Dimensions are in millimeters (inches)

Action Instruments

Barber-Colman

Chessell

Continental

Eurotherm