Eurotherm WV168 Data Sheet

WV168-2000 (non-latching)
WV168-2001 (latching)

ULTRA SLIMPAK® II

WV168

DC Powered AC Input Limit Alarm

Provides Relay Contact Closures

at a Preset AC Input Level

 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 WV168 is an AC Voltage or Current 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 eight input voltage ranges between 50mV and 250V,
and two current input ranges, 20mA and 100mA. Alarm setpoints
are fully adjustable throughout the entire range.

The WV168-2000 contains two standard non-latching SPDT relays.
When power is removed, the relays revert to their non-powered
state. The WV168-2001 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 WV168-2000 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.

 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.

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 WV168-2001 requires pressing the
reset switch in order to reset the relay 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.

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

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Unless otherwise specified, the factory presets the Model WV168
as follows:

Input: mVAC

Range: 0-500mV

Output: Dual, SPDT

Trip: A: HI, B: LO

Failsafe: No

Deadband: A, B: minimum

Failsafe: Off

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

Calibration

See the calibration flowchart 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 (

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.

b) Setpoint A trip point and reset point.

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 to ON for a Hi trip setpoint or to OFF
for a Low trip setpoint.

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).

c) Setpoint B trip point and reset point.

d) Failsafe (ON/OFF).

Note that if a deadband entry is not specified, the default setting
of 0.25% will be used.

Figure 2: DC Inductive Loads

Figure 3: AC Inductive Loads

ON = Closed

Remote Cal Enable

Remote Cal DisableOnOff

"A" Hi Trip

"A" Low TripOnOff

Figure 4: Switch Settings

1

3

2

"B" Hi Trip

"B" Low TripOnOff

45

Failsafe

Non-FailsafeOnOff

8

7

6

Range: 0 to 500 mV

(see Table)

Default Switch Settings

ON = Closed

1

4

Figure 5: Wiring Connections

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Figure 6: Calibration Flowchart

Specifications

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Inputs:

Voltage Input Ranges:

50mV, 150mV, 500mV, 5V, 20V, 50V, 150V, 250V
Impedance: >100k Ohms
Overvoltage: 275VAC
Frequency Range: 40 to 400 Hz

Current Input Ranges:

20mA, 100mA
Impedance: 10 Ohms, typical
Overcurrent: 200mA, max
Overvoltage:

Minimum Deadband:

Range Deadband

50mV 0.2% (100uV)
150mV 0.2% (300uV)
500mV 0.2% (1mV)

5V 0.1% (5mV)
20V 0.1% (20mV)
50V 0.1% (50mV)

150V 0.1% (150mV)
250V 0.1% (250mV)

20mA 0.1% (20uA)

100mA 0.1% (100uA)

Response Time:

Dynamic Deadband:

Relay status will change when proper setpoint/process condition
exists for 100mSec. or greater.

Normal Mode (analog filtering): <250mSec

60V

Setpoint:

Effectivity: Setpoints are adjustable (by pushbutton) over 100% of

the selected input span

Repeatability (constant temperature):

>200mV/10mA: 0.1% of full scale
<200mV/10mA: 0.2% of full scale

Relay Contacts:

2 SPDT (2 form C) Relays; 1 relay per setpoint

Current rating (resistive): 120VAC: 5A; 240VAC: 2A; 28VDC: 5A
Material: Gold flash over silver alloy
Electrical Life: 10

Reset Switch (WV168-2001 only):

For unlatching the relay once the process is no longer in the alarm state.

Local Range Selection: By DIP switch
Stability: ±100ppm of FS /°C
Common Mode Rejection: 120dB @ DC, >90dB @ 60Hz, or better
Isolation: 1800VDC
Power: 9 to 30VDC; 1.2W typ., (3.25W max both relays energized)
Host Module Interface: IR link
Size: DIN rail case – refer to Dimensions drawing
Environmental:

Operating Temperature: 0°C to +60°C (32 to 140°F)
Storage Temperature: -25°C to +85°C (-13 to 185°F)
Operating Humidity: 15% to 95%RH (non-condensing) at 45°C
Storage Humidity: 90%RH (non-condensing) at 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

5

operations

Ordering Information

Specify:

1. Model:

WV168-2000 (non-latching) or
WV168-2001 (latching)

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)

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Action Instruments

Chessell

721-0865-00-E 02/09 Copyright© Eurotherm, Inc 2009

Eurotherm