- 1 - User`s Manual: Series 450T AC Voltage Input AC
Contents
1. 4501 373 If the unit is not factory calibrated refer to the CALIBRATION section Mounting Mount transmitter assembly refer to Drawing 4501 348 for mounting and clearance dimensions DIN Rail Mounting Using suitable fastening hardware secure the DIN rail to the designated mounting surface A transmitter can be mounted to either the Rail Installation of the transmitter to the rail depends on the type of DIN rail used refer to Drawing 4501 348 Units can be mounted side by side on 1 0 inch centers if required Electrical Connections The wire size used to connect the unit to the control system is not critical All terminal strips can accommodate wire from 14 26 AWG Strip back wire insulation 1 4 inch on each lead before installing into the terminal block Input wiring may be shielded or unshielded twisted pair Output wires should be twisted pair Since common mode voltages can exist on signal wiring adequate wire insulation should be used and proper wiring practices followed It is recommended that the output and power wiring be separated from the signal wiring for safety as well as for low noise pickup 1 Power The label on the unit specifies the AC power requirements Connect AC power as shown in Drawing 4501 373 Use suitable wire per applicable codes For 115V AC units connect the AC HOT power lead to the L1 terminal and the AC NEUTRAL power lead to the terminal marked W For 230V AC units connect2. better and have a source resistance of 100 ohms or less The output voltage or current must be measured to 0 25 accuracy or better for proper results The Zero and Span adjustments are accessible on the front panel of the transmitter see Drawing 4501 373 for location The screwdriver blade used to adjust the potentiometers should not be more than 0 1 inch 2 54mm wide Transmitter Calibration Example MODEL 450T VAC Y 1 DIN NCR Input 0 to 150V AC Output 4 20mA DC Power 115V 1 Set the input source to 0 000V AC Adjust the Zero Z pot until the output reads 4 000mA DC 2 Set the input source to 150V AC Adjust the Span 5 pot until the output reads 20 000mA DC 3 Repeat steps 1 and 2 above until the readings converge The instrument is now calibrated Several mid point values should also be checked to verify proper operation of the transmitter GENERAL MAINTENANCE The transmitter contains solid state components and requires no maintenance except for periodic cleaning and calibration verification When a failure is suspected a convenient method for identifying a faulty transmitter is to exchange it with a known good unit It is highly recommended that a non functioning transmitter be returned to Acromag for repair since Acromag makes use of tested and burned in parts and in some cases parts that have been selected for characteristics beyond that specified by the manufacturer Further Acromag has automate
3. Acromag 9 User s Manual Series 450T AC Voltage Input AC Powered Transmitters Table of Contents Page Introduction 0 0 L L L L LL L L LL 1 Description 0 0 0 a LLL LL L L L L L LLL 1 Specifications L L LL L L L LL LLL 2 Installation 0 0 L L L LL L LLL 3 Calibration LL L LL L L LLL 3 General Maintenance aaa a LLL 3 List of Drawings Page Electrical Connections AC Voltage Input 4501 373 ___ 4 Dimensions DIN Rail Mounting 4501 348 5 IMPORTANT SAFETY CONSIDERATIONS It is very important for the user to consider the possible adverse effects of power wiring component sensor or software failures in designing any type of control or monitoring system This is especially important where economic property loss or human life is involved It is important that the user employ satisfactory overall system design It is agreed between the Buyer and Acromag that this is the Buyer s responsibility Acromag Inc 30765 S Wixom Road P O Box 437 Wixom Michigan 48393 7037 USA Tel 248 624 1541 FAX 248 624 9234 Copyright 1994 Acromag Inc Printed in the USA Data and specifications are subject to change without notice 8500 500 A94A000 Series INTRODUCTION These instructions cover the model types listed in Table 1 below Supplementary sheets are attached for units with special options or features Table 1 A Model Number Format 450T Input Output Power Mounting Certification Calibratio
4. EEE C37 90 1978 Unit is tested to a standardized test waveform that is representative of surges high frequency transient electrical interference observed in actual installations Construction Circuit Boards Military grade FR 4 epoxy glass circuit board Circuit Board Coating Fungus resistant acrylic conformal coat Terminals Compression type wire size 14 AWG maximum Mounting Position Position insensitive Case Self extinguishing NYLON Type 6 6 polyamide thermoplastic UL94 V 2 color black General Purpose NEMA Type 1 enclosure MOUNTING DIN General Purpose Housing DIN Rail Mount G amp rails Rail 32mm 50035 Rail 35mm Type EN50022 Refer to Drawing 4501 348 for outline and clearance dimensions Shipping Weight 1 pound 0 45 Kg packed Series 450T User s Manual AC Voltage Input AC Powered Transmitters CERTIFICATION Consult the factory for current information on the availability of agency e g Canadian Standards Association Factory Mutual etc approvals NCR No Certification Required INSTALLATION This transmitter is packaged in a general purpose enclosure Use an auxiliary enclosure to protect against unfavorable environments and locations Maximum operating ambient temperatures should be within 13 F to 185 F 25 C to 85 C for satisfactory performance Factory calibrated units are ready for installation Connect as shown in the connection diagram of Drawing
5. TIONS tort B 4501 373 AG NOTE PLASTIC ENCLOSURE SNAPS TOGETHER AT SEAMS WIRE INSERTION CLAMPS 12 PLACES G RAIL DIN MOUNTING T RAIL DIN MOUNTING SHOWN THIS SIDE SHOWN THIS SIDE XN DIN EN 50035 32mm DIN EN 5 022 35mm RAIL DIN MOUNTING SHOWN H DIN EN 50035 32mm RAIL DIN MOUNTING SHOWN HERE DIN EN 50022 35mm SCREWDRIVER SLOT FOR REMOVAL FROM 7 RAIL NOTE ADJACENT UNITS CAN BE MOUNTED ON 1 6 INCH 48mm CENTERS ENCLOSURE DIMENSIONS FOR DIN RAIL MOUNTING Acromag wikom MICH om pej SERIES 450T HOUSING DIN RAIL MOUNT fo asor 1 1 94501 48 NOTE ALL DIMENSIONS ARE IN INCHES MILUMETERS
6. d test equipment that thoroughly checks the performance of each transmitter VOLTAGE 5 AC INPUT POWER 1 CURRENT OUTPUT murum OPTION 1 nusa 23evac AC w acao Le crouno croyno NOTE INPUT GROUND TERMINAL IS OUTPUT 5 SEE NOTE 1 TRANSMITTER ZERO AND SPAN ADJUSTMENTS AC VOLTAGE INPUT SEE BELOW AC VOLTAGE L 1 GROUND INPUT CONNECTIONS sve De eee GE 4 NOT CONNECTED INTERNALLY RECTIFICATION AND FILTERING OPTIONAL GROUND SERIES 45 T SIMPLIFIED SCHEMATIC SERIES 45 T AC VOLTAGE INPUT ELECTRICAL CONNECTIONS ZERO SIGNAL AMPLIFIER INPUT POWER SUPPLY SPAN ADJUST ADJUST ste oe ee Sn eee SS GS OUTPUT AMPLIFIER SIGNAL ISOLATION AC POWER ISOLATION 115VAC w ne Z SUPPLY INPUT POWER ISOLATION NOTE 1 FOR PROCESS CURRENT OUTPUT UNITS Y A PRECISION 1 OHM RESISTOR IS PLACED IN SERIES WITH THE OUTPUT TERMINAL 1 25 A DVM MAY CONNECTED BETWEEN THE OUTPUT S AND TERMINAL TO MONITOR THE LOOP CURRENT THUS A DVM MEASUREMENT OF 40mvV IS EQUIVALENT TO 4mA AND 20QmV IS EQUIVALENT TO 2 mA OF LOOP CURRENT FOR VOLTAGE OUTPUT UNITS THE OUTPUT S TERMINAL IS ELECTRICALLY EQUIVALENT TO THE OUTPUT TERMINAL BN Acre AEG ME SERIES 4507 VAC INPUT CONNEC
7. ds 2 0 times full scale continuously Input impedance 100K ohms nominal Isolation Three way isolation is provided between input output and power for common mode voltages up to 250V AC or 354V DC off ground on a continuous basis will withstand 1500V AC dielectric strength test for one minute without breakdown This complies with test requirements of ANSI ISA S82 01 1988 for the voltage rating specified OUTPUT Process Current or Voltage output Voltage outputs are designed to provide true voltage output with zero volts included and to be stable with capacitive loads Y 4to 20mA DC R Load 0 to 600 ohms VO to 10V DC into 10 000 ohms or greater V5 0 to 5V DC into 5 000 ohms or greater NOTE For process current output Y units the loop current may be monitored by placing a DVM between the Output S and Output terminal This connection measures the current drop through a precision 10 ohm resistor placed in series with the Output terminal 0 1 25ppm C A DVM measurement of 40mV corresponds to 4mA and 200mV corresponds to 20mA of loop current For voltage outputs Vx units the Output S terminal is electrically equivalent to the Output terminal Output Limiting Voltage units Vx 120 of full scale output nominal Current unit Y 125 of full scale output 24mA nominal Output Ripple Less than 0 1 of the maximum output span POWER 1 115V AC 10 50 to 60Hz 0 05A Y uni
8. ed transmitters providing the same input conditioning for AC powered applications An entire family of Acromag flat pack DIN rail transmitters alarms and isolators are available providing a flexible and modular solution for a wide range of applications Series 450T User s Manual AC Voltage Input AC Powered Transmitters Series 450T transmitters are RFI and EMI protected operate over a wide temperature range and feature excellent temperature coefficients which minimize the effects from harsh plant environments In addition the safe compact rugged and reliable design of this transmitter allow it to be used in control room or field locations Input wiring is inserted in the bottom of the unit while output and power wiring is inserted at the top of the unit Screws to secure the wiring are located on the front panel Connectors are screw clamp type and accept wire size up to 14 AWG SPECIFICATIONS Function This family of three way isolated AC powered transmitters condition an AC Voltage signal and convert this signal to a process current or voltage output Wide range zero and span adjustments utilize 22 turn potentiometers accessible from the front of the unit Optional 115V AC or 230V AC power is available This transmitter is DIN rail mounted MODEL SERIES 450T Color coded with a white label INPUT VAC AC Voltage 50 60 Hz spans 60 to 150V AC zero offset from 0 to 90V AC both continuous adjustments Withstan
9. n B Typical Model Number 450T VAC Y 1 DIN NCR C NCR Approval Notes Table 1 1 Unit can be ordered with or without factory calibration if unit is factory calibrated to customer specifications the model number suffix C will indicate this Any customer specified calibration information will be included on a separate calibration label on the unit 2 Consult the factory for current information on agency e g Canadian Standards Association etc approvals DESCRIPTION The Series 450T is an AC powered DIN rail mounted transmitter family This model conditions AC Voltage with spans from 60V to 150V AC and converts this signal to a process current or voltage output Three way circuit isolation is standard between input output and power This model also provides wide range zero and span adjustments Series 450T transmitters are available for 115V or 230V AC power for DC power applications see the Acromag Series 350T transmitter family The versatile DIN rail mount can accommodate a variety of mounting applications See Drawing 4501 373 for a simplified schematic Series 450T transmitters are designed to be used as functional components to provide the user with a modular approach to the varied applications in the field Other 450T transmitters are available to condition DC voltage current thermocouples frequency and RTD inputs The Series 450T complements the Acromag Series 350T DC power
10. the AC L1 power lead to the L1 terminal and AC L2 power lead to the terminal marked L2 Connect the AC GROUND lead to the G terminal NOTE the AC Ground G terminal is not connected internally 2 Grounding The transmitter housing is plastic and does not require an earth ground connection If the alarm is mounted in a metal housing a ground wire connection is required Connect the ground terminal of the metal housing Green Screw to a suitable earth ground using appropriate wire per applicable codes 3 Output Connect output per connection Drawing 4501 373 Load range is a function of the module s output type refer to Output in the preceding SPECIFICATIONS section The output is isolated from the input and power circuits 4 Input Connect input per connection Drawing 4501 373 If unit is factory calibrated the calibration label indicates range of input NOTE The input circuit is electrically isolated from the output and power circuits allowing the input to operate up to 250V AC or 354V DC off ground on a continuous basis CALIBRATION This section provides calibration information If the unit was factory calibrated verification of the calibration can be made per the Adjustment Procedure Adjustment Procedure Connect transmitter as shown in connection Drawing 4501 373 For best results the input signal source should be adjustable over the entire input range of the unit settable to an accuracy of 0 25 or
11. ts 0 020A Vx units 2 230V AC 10 50 to 60Hz 0 025A Y units 0 010A Vx units Power Supply Effect Less than 0 05 of output span for rated supply variations Reference Test Conditions Input 0 to 150V AC 60Hz Output units 4 20mA DC 500 ohm load Output Vx units 0 10V DC into 10K ohms or greater Ambient 77 F 25 C 115V AC supply Accuracy Better than 0 5 of calibrated span The error includes the combined effects of transmitter repeatability hysteresis terminal point linearity and adjustment resolution Does not include sensor error Ambient Temperature Range 13 F to 185 F 25 C to 85 C Ambient Temperature Effect Less than 0 01 of output span per 0 018 per C over the ambient temperature range for reference test conditions Specification includes the combined effects of zero and span over temperature Bandwidth 3dB at 1KHZz typical Response Time For a step input the output reaches 98 of output span in 300ms typical Noise Rejection Common Mode Better than 85dB at 60 Hz 100 ohm unbalance typical Normal Mode Not Applicable RFI Resistance Less than 0 5 of output span with RFI field strengths of up to 10V meter at frequencies of 27MHz 151MHz and 467 MHz EMI Resistance Less than 0 25 of output span effect with switching solenoids or commutator motors Surge Withstand Capability SWC Input Output terminations are rated per ANSI I
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