ULTRA SLIMPAK(R) II WV438 DC Powered Potentiometer Input Isolating Signal Conditioner High Accuracy Signal Conditioner with an Isolated DC Voltage or Current Output WV438-2000 Lower Power Requirements with SmartPower Improved Accuracy Bussed Power with Plug-in Power Clips Removable Terminals for Easy Service RoHS Compliant Touch Cal for Best Stability and Accuracy DIP Switch Configuration 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. Enhanced LED Diagnostics Other than when executing the pushbutton calibration routine, the LEDs blink under the following conditions: The WV438 is a potentiometer input signal conditioner supporting 3-wire potentiometers and slidewire devices from 100 ohms to 100k ohms. The switch selectable output ranges are 0-10VDC,020mA and 4-20mA. All of the output ranges are fully adjustable via pushbutton calibration. The input default range is 0 to 100% of the potentiometer range, but can be adjusted via pushbutton calibration to any 20% portion of the potentiometer. The default output range is 4-20mA. RED: 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. 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). GREEN: 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. 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. 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 WV438 as follows: Input: Range: Output: Range: Reverse Out: Remote Cal: Potentiometer 100 ohms to 100k ohms Current 4-20mA Off 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 (703-669-1318). 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. Set position 1 of S1 to ON if a WVC16 will be utilized and remote calibration capability is desired. a) Potentiometer Input Range, in percent (for example: Input = 25 to 75% of pot rotation). 2. Set position 2 and 3 of S1 for the desired output type. b) Output Type & Range (for example: 4-20mA). c) Reverse Output Function (ON/OFF). 3. Set position 4 of S1 to ON for reverse output operation. It is also possible to remotely select the setpoints using an Ethernet connection and the optional WVC16 Communications Interface module. ON = Closed Function S1 1 2 3 4 1 2 3 4 Remote Cal Enable - - Reverse Output On Direct Output Off - Output Range: 4 to 20 mA (see Table) Output Range 0 to 10V - - 0 to 20mA - - 4 to 20mA - - Reverse Out - Remote Cal On On Remote Cal Off Off Default Switch Settings - - Key: = 1 = ON or Closed; - = n/a Figure 1: Switch Settings Pin Description 11 Potentiometer Input (full CW) 12 Potentiometer Input (full CCW) 21 DC Power (+) 22 DC Power (-) 41 Potentiometer Input (wiper) 42 Shield Ground 51 Output (+) 52 Output (-) Figure 2: Wiring Connections Figure 3: Calibration Flowchart Specifications Potentiometer Resistance (end to end): 100 ohms (min.) to 100k ohms (max.) Input Ranges: Pushbutton adjustable Linearity: 0.1% of span, typical Excitation: 300mV, nominal Turn-Up/Turn-Down: 80% (90% to 0.2% linearity) Common Mode Rejection: 60Hz: >100dB DC: >120dB Output Ranges: 0 to 10VDC 0 to 20mA 4 to 20 mA Response Time: 100mSec typical Stability: 100ppm of full scale/C Output Ripple: 0.2% of span, or 5mVrms, whichever is greater Output Impedance: Voltage Output: <10 ohms Currnet Output: >100k ohms Output Drive: Voltage Output: 10 mA, max Current Output: 20V compliance @ 20mA Power: 9-30VDC; 1.0W typ., 2.0W max. Isolation: 1800VDC input to output to power Host Module Interface: IR Link Size: DIN rail case - refer to Dimensions drawing Operating Temperature: 0 to +60C (32 to 140F) Storage Temperature: -25 to +85C (-13 to 185F) Operating Humidity: 15% to 95% RH,non-condensing @ 45C Storage Humidity: 90% RH, non-condensing @ 60C for 24 hours 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 Note that detailed installation instructions are available on our website. Ordering Information Specify: 1. Model: WV438-2000 2. Optional Custom Factory Calibration (specify C620, see required settings under "Calibration, page 2). 3. Accessories. Dimensions Dimensions are in millimeters (inches) Accessories All WV Series modules will mount on standard TS35 (model MD03) DIN rail. In addition, the following accessories are available: WVC16 MD03 WV905 H910 H915 MB03 C650 Communications Interface TS35 x 7.5 DIN Rail (2 meters) 24VDC Power Supply (0.5 Amp) 24VDC Power Supply (1 Amp) 24VDC Power Supply (2.3 Amp) End Bracket for MD03 Utility software for WVC16 Factory Assistance Printed on recycled paper For additional information on calibration, operation and installation contact our Technical Services Group: 703-669-1318 Eurotherm, Inc 741-F Miller Drive Leesburg, VA 20175-8993 703-443-0000 info@eurotherm.com or www.eurotherm.com/actionio Action Instruments Barber-Colman actionsupport@eurotherm.com 721-0852-00-D 02/09 Copyright(c) Eurotherm, Inc 2009 Chessell Continental Eurotherm