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WV428-2000
ULTRA SLIMPAK® II
WV428
DC Powered Thermocouple Input
Isolating Signal Conditioner
High Accuracy Signal Conditioner with an Isolated,
Linearized DC Voltage or Current Output
Lower Power Requirements with SmartPower
Improved Accuracy
Bussed Power with Plug-in Power Clips
Removable Terminals for Easy Service
Approved for use in Class I Div 2 Group A, B, C, D areas
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 WV428 supports B, C, E, J, K, N, R, S & T thermocouples that
are DIP switch selectable. The WV428 also supports a millivolt
range of –20 to +80mVDC. The input accuracy of the WV428 is
±0.05% with a CJC error of £ ±1°C. Both voltage and current have
an input accuracy of 0.015% of full scale. Outputs include 0-10V,
0-20mA and 4-20mA. The WV428 is recognized for use in Class 1,
Division 2, Groups A, B, C, D hazardous locations.
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.
Approved for use in Class I Div 2 Group A, B, C, D areas
Users can now enjoy significant labor savings over traditional
protection methods since there is no need for explosion proof
enclosures and conduits.
A Class I hazardous location is one in which flammable gases or
vapors may be present in the air to be ignitable or explosive
(typical applications include petroleum refineries, spray finishing
areas, utility gas plants and fuel servicing areas).
A Division 2 area is one in which the flammable gases or vapors are
normally not present in an explosive concentration, but could
accidentally exist.
Group A is acetylene; Group B includes hydrogen; Group C includes
ether; and Group D includes hydrocarbons, fuels and solvents.
RoHS Compliant
Touch Cal for Best Stability and Accuracy
DIP Switch Configuration
Optional E-mail Notification of Alarms
Instant Accuracy
Instant Accuracy maximizes accuracy and performance during
warmup and during changes in ambient temperature. This
patented cold-junction compensation technique utilizes two temperature sensors to measure the differential temperature near the
terminal block. Using heat transfer calculations with the measured differential temperature and the known thermal conductivity of the PCB, the terminal junction temperature is determined
with extreme accuracy. Even during unstable thermal states such
as start-up, ambient temperature changes, or changing load or
power, the WV408 performs extremely accurate thermocouple
temperature measurement. Instant Accuracy improves system
performance and productivity due to reduced warm-up time,
fewer temperature measurement errors, and tighter process
control for higher quality. Most significantly, it allows calibration
to be checked quickly and accurately without the effects of rapid
ambient temperature changes due to opening a control panel
door, which often causes erroneous readings and miscalibrations
- a common cause of measurement errors.
Enhanced LED Diagnostics
Other than when executing the pushbutton calibration routine,
the LEDs blink under the following conditions:
GREEN:
RED:
YELLOW: Flashes at 2Hz for a TC burnout.
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).
TM
Flashes at 2Hz when the input is under range.
Flashes at 8Hz when the input is over range.
Flashes at 2Hz when the output is under range.
Flashes at 8Hz when the output is over range.
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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 WV428
as follows:
Input: Type J thermocouple
Range: -210°C to 760°C
(-346°F to 1400°F)
Output: 4-20mADC
Burnout: Upscale
Remote Cal: Off
1. For other ranges, refer to the SWITCH SETTINGS table.
Reconfigure switch S1 for the desired input type and range.
It is also possible to remotely select the setpoints using an Ethernet
connection and the optional WVC16 WebView Communications
Interface module.
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:
a) Input Type, Range & Units (°C or °F).
b) Output Type, Range & Units (mA, V).
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 4-7 of S1 for the desired input range.
noitcnuF1S
12345 6 7
tupnI
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elpuocomrehTCepyT---
elpuocomrehTEepyT---
elpuocomrehTJepyT---
elpuocomrehTKepyT---
elpuocomrehTNepyT---
elpuocomrehTRepyT---
elpuocomrehTSepyT---
elpuocomrehTTepyT---
Vm08+otVm02----
c) Burnout (Upscale or Downscale).
ON = Closed
1
Remote Cal On
Remote Cal Off
45
3
2
Output Range: 4 to 20 mA
(see Table)
On
Off
6
Input: Type J T/C
(see Table)
7
Default Switch Settings
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elbanElaCetomeR
------
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----
Am02ot0-----
Am02ot4-----
Figure 1: Switch Settings
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11 )+(rewoPCD
21 )-(rewoPCD
12 )+(rewoPCD
22 )-(rewoPCD
14 )+(tupnI
24 )-(tupnI
15 )+(tuptuO
25 )-(tuptuO
Figure 2: Wiring Connections
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Figure 3: Calibration Flowchart
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Specifications
r
Inputs:
Thermocouples:
Type°C °F
B 75 to 1800 167 to 3272
C 0 to 2315 32 to 4199
E -200 to 1000 -328 to 1832
J -210 to 760 -346 to 1400
K -200 to 1370 -328 to 2498
N -200 to 1300 -328 to 2372
R 0 to 1760 32 to 3200
S 0 to 1760 32 to 3200
T -200 to 400 -328 to 752
Millivolts: -20 to +80mV
Accuracy: ±0.05% of F.S. & CJC to ±1°C
Pushbutton Adjustment:
Effective zero offset: +95% (Inputs >10mV)
Effective span turn-down: = -95%
Outputs:
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 Selection: By DIP switch
Burnout Detection: Programmable for upscale, downscale or none
Response Time: 100mSec (10 to 90%)
Stability: ±100ppm of full scale/°C (±0.01%/°C)
Common Mode Rejection: 120dB @ DC, >90dB @ 60Hz, or better
Isolation: 1800VDC or peak AC between input, output & power
ESD Susceptibility: Capable of meeting IEC 801-2 level 3 (8kV)
Power: 9-30VDC; 1.0W typ., 2.0W max
Host Module Interface: IR Link
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% RHNC @ 45°C
Storage Humidity: 90% RHNC @ 60°C for 24 hours
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:
WV428-2000
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
721-0805-00-L 02/09 Copyright© Eurotherm, Inc 2009
Eurotherm
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