ULTRA SLIMPAK(R) II WV128 DC Powered T/C Input Limit Alarm Provides Relay Contact Closures at a Preset Temperature Input Level WV128-2000 (non-latching) WV128-2001 (latching) Programmable HI or LO, Failsafe or Non-failsafe Improved Accuracy Adjustable Deadband 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 WV128 is a Thermocouple Input Limit Alarm with dual setpoints and two contact closure outputs. The input type and alarm functions are field configurable, offering maximum flexibility. There are seven thermocouple types (B, E, J, K, R, S and T) from which to choose. Alarm setpoints are fully adjustable throughout the entire range. The WV128-2000 contains two standard non-latching SPDT relays. When power is removed, the relays revert to their non-powered state. The WV128-2001 contains two latching relays. Whatever position the relays are in when power is removed is where they will remain when power is re-applied (a reset switch is provided to reset the relays after the alarm is no longer true). Both models are configurable as a single or dual setpoint alarm, with HI or LO trips. The WV128-2000 supports failsafe or non-failsafe operation. In failsafe operation the relay coil is energized when the process is below the HI setpoint or above the LO setpoint (opposite for nonfailsafe). In the failsafe mode, a power failure results in an alarm state output. Operation Each of the alarm setpoints has a respective HI or LO deadband. Red LEDs will illuminate indicating an alarm condition. The trip will reset only when the process falls below the HI deadband or rises above the LO deadband. (The WV128-2001 requires pressing the reset switch in order to reset the relays after being tripped.) The deadband can be left at the minimum level (the factory default) or can be set to whatever level is desired. Options C620 Factory cal of input range, setpoints and output relays. Touch Cal for Best Stability and Accuracy RoHS Compliant LED Trip and Input Indicators Optional E-mail Notification of Alarms Enhanced LED Diagnostics Other than when executing the pushbutton calibration routine, the LEDs blink under the following conditions: RUN (Green): On when unit is powered. Flashes at 2Hz when input is under range. Flashes at 8Hz when input is over range. SETPOINT A (Red): On when Setpoint A is tripped. On when setting Setpoint A. Flashes while calibrating the input level. SETPOINT B (Red): On when Setpoint B is tripped. On when setting Setpoint B. On while calibrating the input level. Figure 1: Limit alarm operation and effect of deadband. 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. Configuring Modules Unless otherwise specified, the factory presets the Model WV128 as follows: Input: Output: Trip: Failsafe: Deadband: Remote Cal: Type J Dual, SPDT A: HI, B: LO No A, B: minimum No Calibration See calibration flwchart in Figure 6. 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. For other ranges, refer to the SWITCH SETTINGS table (see Figure 4). Reconfigure switches S1 and S2 for the desired input type and range. a) Input type. 2. Set position 1 of S1 to ON if a WVC16 will be utilized and remote calibration capability is desired. c) Setpoint B trip point and reset point. b) Setpoint A trip point and reset point. d) Failsafe (ON/OFF). 3. Set position 2 and 3 of S1 to ON for a Hi trip setpoint or to OFF for a Low trip setpoint. Note that if a deadband entry is not specified, the default setting of 0.25% will be used. 4. Set position 4 of S1 to ON for failsafe operation (e.g. alarm trips upon power failure) or OFF for non-failsafe operation (-2000 only). It is also possible to remotely select the setpoints using an Ethernet connection and the optional WVC16 WebView Communications Interface module. Relay Protection and EMI Suppression When switching inductive loads, maximum relay life and transient EMI suppression is achieved using external protection (see Figures 2 & 3). Place all protection devices directly across the load and minimize all lead lengths. For AC inductive loads, place a properlyrated MOV across the load in parallel with a series RC snubber. Use a 0.01 to 0.1mF pulse film capacitor (foil polypropylene recommended) of sufficient voltage, and a 47ohm, 1/2W carbon resistor. For DC inductive loads, place a diode across the load (PRV > DC supply, 1N4006 recommended) with (+) to cathode and (-) to anode (the RC snubber is an optional enhancement). Function S1 1 2 3 4 5 6 7 8 Input +80mV/-20mV - - - - B t/c - - - - E t/c - - - - J t/c - - - - K t/c - - - - R t/c - - - - S t/c - - - - T t/c - - - - Remote Cal Enable - - - - - - - - - - - - - - - - - A Hi/Low (Hi) - B Hi/Low (Hi) Failsafe - - - Key: = 1 = ON or Closed; - = n/a Figure 4: Switch Settings ON = Closed 1 2 3 4 Remote Cal Enable On Remote Cal Disable Off 5 6 7 Input: Type J T/C (see Table) "A" Hi Trip On "A" Low Trip Off Failsafe On Non-Failsafe Off "B" Hi Trip On "B" Low Trip Off Figure 2: DC Inductive Loads Figure 3: AC Inductive Loads Default Switch Settings Pin Figure 5: Wiring Connections Figure 6: Calibration Flowchart Description 11 N.O. Relay B 12 Com. Relay B 13 N.C. Relay B 21 DC Power (+) 22 DC Power (-) 23 No Connection 41 T/C Input (+) 42 T/C Input (-) 43 No Connection 51 N.O. Relay A 52 Com. Relay A 53 N.C. Relay A Specifications Inputs: Thermocouples Supported: B, E, J, K, R, S, T Ranges: T/C C F B +75 to 1820 +167 to 3308 E -265 to 1000 -445 to 1832 J -210 to 760 -346 to 1400 K -265 to 1372 -445 to 2502 R -25 to 1760 -13 to 3200 S -25 to 1760 -13 to 3200 T -265 to 390 -445 to 734 Overvoltage: 10V differential Common Mode: 1800VDC (Input to Ground) Limit Differential (deadband): 0.2% to 100% of span. Set by Pushbutton Adjustment. Response Time: Dynamic Deadband: Relay status will change when proper setpoint/ process condition exists for 100mSec. Normal Mode: <250mSec (analog filtering) Setpoint: Effectivity: Setpoints are adjustable (by pushbutton) over 100% of the selected input span. Repeatability: 0.05% of FS, 1C (constant temp) Relay Contacts: 2 SPDT (2 form C) Relays 1 relay per setpoint Current rating (general use): 120VAC: 5A; 240VAC: 2A; 28VDC: 5A Material: Gold flash over silver alloy Electrical Life: 105 operations Reset Switch: For unlatching the relay once the process is no longer in the alarm state. (WV128-2001 only) Local Range Selection: By DIP switch Stability: 100ppm of FS/C Common Mode Rejection: 120dB @ DC, >90dB @ 60Hz, or better Isolation: 1800VDC or peak AC between contacts, input & power. ESD Susceptibility: Capable of meeting IEC 801-2 level 3 (8kV) Power: 9 to 30VDC; 1.2W typ., (3.25W max both relays energized) Host Module Interface: IR link Wire Terminations: Screw terminations for 12-22 AWG Size: DIN rail case - refer to Dimensions drawing Environmental: Operating Temperature: 0C to +60C (32 to 140F) Storage Temperature: -25C to +85C (-13 to 185F) Operating Humidity (non-condensing): 15% to 95% at 45C Storge Humidity (non-condensing): 90% at 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: WV128-2000 (non-latching) or WV128-2001 (latching) 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 721-0859-00-D 02/09 Copyright(c) Eurotherm, Inc 2009 Chessell Continental Eurotherm