Fisher 4200 Series Electronic Position Transmitters - Aptec Electronics

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4200 Series TransmittersProduct Bulletin62.3:4200April 2009Table 3. Power Supply Requirements and Wiring ConnectionsTRANSMITTER TERMINALFIELD WIRING CONNECTIONSVOLTAGE (VDC)CURRENTREQUIRED (MA)Min Max Supply Wire (1) Signal Wire (2) Relay ReturnWire (3)Transmitter Only 11 30 20 max. X X − − −Transmitter withTravel Limit Alarms20 30 80 max. X X XTravel Limit Alarmswithout Transmitter20 30 50 max. X − − − XX indicates this connection required.1. Supply wire provides power supply positive connection for electronic circuits and relay coils (in instruments with travel limit alarms).2. Signal wire provides connection for device receiving 4 to 20 mA transmitter signal.3. Relay return wire provides separate return wire for relay coil currents.To reduce field wiring requirements from 4 to 3wires, the transmitter and alarm circuits share thepositive supply wire. A separate return wire isrequired to isolate relay coil currents from the 4-20mA transmitter signal.Features High Accuracy—A precision film-elementpotentiometer in the standard unit and a precisionmulti-turn wirewound potentiometer in thelong-stroke unit provide exceptional linearity bymatching the span of the sense element to theapplication. Application Versatility—This instrument maybe used with sliding-stem or rotary valves as well aswith other mechanical devices such as furnacedampers or louvers.LOAD IMPEDANCE (OHMS)100075065050025000 10 20 301124A6765/IL POWER SUPPLY VOLTAGE (VOLTS DC)OPERATINGREGIONMAXIMUM TRANSMITTERTERMINAL VOLTAGENOMINAL SUPPLYVOLTAGEMINIMUM TRANSMITTERTERMINAL VOLTAGE Electronic Travel Limit Alarms—To eliminatethe need for externally mounted mechanical limitswitches, instruments with travel limit alarmsincorporate comparator circuits that monitor thesense potentiometer voltage output. Adjustable Deadband—Electronic travel limitalarms have an adjustable deadband up to 10percent of the maximum span. Compact Design—The instrument, even withtravel limit alarms, uses little space when mounted,allowing room for additional devices.Figure 3. Transmitter Load Limitations Durable Construction—A rugged housing anda corrosion-resistant coating on the printed wiringboard help protect the instrument from harshenvironments. Simple Circuitry—A simple hybrid electronicdesign combines the best qualities of discretecomponents and integrated circuits for improvedreliability and performance.4
Product Bulletin62.3:4200April 20094200 Series TransmittersPRINTEDWIRINGBOARDRELAYNUMBER 1TERMINALBLOCKNUMBER 1FIELD PRINTEDWIRING BOARDTERMINALBLOCKNUMBER 3TERMINALBLOCKNUMBER 1W9275TERMINALBLOCKNUMBER 2W4675-1/ilRELAYNUMBER 2TRANSMITTER COMPARTMENTFIELD WIRING COMPARTMENTFigure 4. Fisher 4210 Transmitter Details Easy Maintenance—The simple design of thetransmitter and alarms allows easy maintenance.The high reliability of the instrument requiresminimum spare parts inventory. Moisture Resistant—The field wiringcompartment is isolated from the electroniccompartment. This protects the electronic circuitsfrom any moisture brought into the housing via thefield wiring ports. Field Reversible Action—The output is easilyreversed in the field simply by switching twopotentiometer leads on the printed wiring board. Electromagnetic Interference (EMI)Filters—Filters between the electronic compartmentand the field wiring compartment of the housing helpprovide protection against electromagneticinterference.ApplicationsStandard Position TransmitterSliding-Stem Valve—In typical valve applications,the transmitter is mounted on the actuator as shownin figure 1. Two linkage configurations sense up to51 mm (2 inches) or up to 105 mm (4.125 inches) ofstem travel. The linkages incorporate mechanicalgearing to linearize the transformation from linearmotion to rotational. To reduce the possibility ofphysical damage if the linkage should slip, thepotentiometer has no physical stops. Zero and spancan be adjusted as follows: Zero—Between 0 and 51 mm (2 inches) oftravel, or between 0 and 105 mm (4.125 inches) oftravel. Span—Between 9 mm (0.3 inch) minimumspan and 51 mm (2 inches) maximum span, orbetween 17 mm (0.6 inch) minimum span and 105mm (4.125 inches) maximum span.Rotary-Shaft Valve—In typical valve applications,the transmitter is mounted on the actuator as shownin figure 2. A coupling connects the hub of theactuator to the potentiometer shaft. To reduce thepossibility of physical damage if the coupling shouldslip, the potentiometer has no physical stops. Zeroand span can be adjusted as follows: Zero—Between 0 and 90 degrees of shaftrotation. Span—Between 15 and 90 degrees of shaftrotation.Other Devices—The transmitter is mounted suchthat the potentiometer shaft or linkage aligns with themotion of the device. The motion of the deviceshould not exceed the zero and span input signallimits in degrees of rotation.5
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Fisher 4200 Series Electronic Position Transmitters - Aptec Electronics

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