1 - User`s Manual: Series 361A Model 361A DC-Powered
Contents
1. ALARM SELECTION MODE SELECTION ee BT ty CH2 FAILSAFE CHI RES CH2 HON FAILSAFE FAILSAFE CH2 NOW FAILSAFE CHI WON FAILSAFE 5 HCH ALARH FAILSAFE CH1 AND CH2 SET FOR HIGH ALARM AS SHOWN FAILSAFE NNON FAILSAFE MODE SELECTION FAILSAFE NON FAILSAFE HIGH LOW AND CH2 SET FOR FALSAFE AS SHOWN QUIPYUT POWER BOARD DISASSEMBLY SEE NOTE 1 JUMPER CONFIGURATION SERIES 361A ALARM JUMPER CONFIGURATION TE 361A ALARM JUMPER CONFIGURATION 2 ssa 1 555 28 NOTE 1 REFER TO THE CALIBRATION SECTION OF THE MANUAL FOR DETAILED INSTRUCTIONS i NON FAILSAFE HIGH LIMIT HIGH ALARM THRESHOLD i i NON LATCHING MOMENTARY FAILSAFE HIGH ALARM NON LATCHING MOMENTARY HIGH LIMIT THRESHOLD DRAWING SHOWS LIMIT EXCEEDED AT TIME 15 LIMIT REMAINS EXCEEDED LIMIT UNTIL TIME 30 EXCEEDED i DRAWING SHOWS LIMIT EXCEEDED AT TIME 15 UMIT REMAINS EXCEEDED UNTIL TIME 5 DROP OUT VALUE LIMIT EXCEEDED rezou acuz rezou NORMAL ALARM NORMAL ALARM NORMAL RELAY ENERGIZED 3 amp RELAY ENERGIZED RELAY DE ENERGIZED p lt RELAY ENERGIZED p RELAY DE ENERGIZED gt LNT EXCEEDED GREEN LED ON i RED LED ON GREEN LEO ON LIMIT EXCEEDED GREEN LED ON i RED LED 0N2. GREEN LED ON SIGNAL WITHIN LIMITS i SIGNAL WITHIN LIMITS i i 20 TIME T TIME T NORMAL ALARM NORMAL RELAY DE ENERGIZED gt RELAY ENERGIZED RELAY DE ENERGIZED gt GREEN LED ON i RED LED ON i GREEN LED ON NORMAL ALARM i lt NORMAL RELAY ENERGI est RELAY DE ENERGIZED gt RELAY ENERGIZED gt GREEN LED ON RED LED ON GREEN LED ON NON LATCHING MOMENTARY FAILSAFE LOW ALARM NON LATCHING MOMENTARY DRAWING SHOWS LIMIT EXCEEDED AT TIME 15 LIMIT REMAINS EXCEEDED UNTIL TIME 30 4 XCI AT TIME 15 paora OUT LIMIT REMAINS EXCEEDED i i UNTIL TIME 30 DROP OUT VALUE DEADBAND emme 520 0 coz remem rzon LOW LIMIT LOW LIMIT THRESHOLD H H THRESHOLD LIMIT EXCEEDED i LIMIT EXCEEDED SIGNAL WITHIN UMITS i SIGNAL WITHIN LIMITS TIME T on eneROZED ON DE ENERGEED Aan on orr DE eNeRGIZED on ae DE ENERGEED FAILSAFE ALARM CONDITIONS NON FAILSAFE ALARM CONDITIONS RELAY NORMALLY ENERGIZED RELAY NORMALLY DE ENERGIZED SERIES 361A 461A ALARM CONDITIONS SERIES 361 461 ALARM CONDITIONS p seta aSra ee ee NOTE PLASTIC ENCLOSURE SNAPS TOGETHER AT SE
3. 20 times full scale for 0 01 seconds 10 times full scale for 0 1 seconds 5 times full scale for 1 0 second AC Current Sensor to Transmitter Wiring Distance 400 feet maximum for 18 AWG wire gauge Other wire gauges can be used as long as the resistance of both wires is less than 5 00 Setpoint Adjust Adjustable from 0 to 115 of input voltage span The setpoint adjustments utilize 15 turn potentiometer s accessible from the front of the instrument and provide linear and continuous adjustment over the full input range of the unit Resolution is better than 0 1 of span continuous By monitoring the input current and adjusting the setpoint pot the setpoint may be precisely set to within 0 1 see Calibration section Optionally the setpoint voltage may be monitored via testpoints at the front of the module 0 to 5V represents 0 to 100 of input voltage span These testpoints will accept up to an 0 080 diameter probe tip do not insert probe tip more than 0 4 inches deep The setpoint voltage at these points represents the true setpoint to within 1 of span For current inputs Input to Input L jumper installed a setpoint voltage of 1 0V represents 4mA and 5 0V represents 20mA Deadband Adjust Hysteresis Deadband is adjustable from 1 to 100 of input span for each channel via 15 turn potentiometer s accessible from the front of the unit The alarm deadband adjustments are independent on dual alarm models The d
4. 361A User s Manual Single Dual Alarm 4 After programming the jumpers install the alarm circuit boards back into their case as described in the assembly procedure below Assembly Procedure for the 361A Plastic Housing 1 Refer to drawing 4501 538 and line up the left plastic side with the board and terminal assembly Carefully press the pieces together 2 Align the pins of the center section with the side and press the pieces together 3 Now line up the right side of the housing with the left side and center assembly and carefully press the pieces together Alarm Adjustment Procedure Connect the alarm as shown in Calibration Connection Drawing 4501 536 For best results the input source must be adjustable over the entire range of the unit and settable to an accuray of 0 1 or better The alarm status LED s can be used to indicate relay action The RED LED will turn ON when the relay changes state from a non alarm to an alarm condition at the same time the GREEN LED will turn OFF The setpoint and deadband potentiometers are accessible from the front panel of the alarm refer to Drawing 4501 536 The screwdriver blade used to adjust the potentiometers should not be more than 0 1 inch 2 54mm wide Alarm Calibration Example MODEL 361A V1 SMRN DIN NCR Single Alarm Input 4 to 20mA Install a jumper between the Input and Input L terminals for current input Setpoint 12mA Alarm Action High HI Alar
5. ON if the setpoint is exceeded in either mode Line power status is indicated by an illuminated LED If the LED s are off check line power and the power connections Isolation Three way isolation input contacts and power are isolated from each other 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 outlined in ANSI ISA S82 01 1988 for the voltage rating specified Power 10V to 36V DC current draw is a function of supply voltage refer to table below Connect an external DC power supply to the Power P and terminals Currents specified are maximum values with the relay s energized The diode coupled power terminal provides reverse polarity protection Power Supply Current Draw Versus Supply Voltage SUPPLY MECHANICAL RELAY OUTPUT VOLTAGE SINGLE DUAL 100 Note avoid damaging alarm do not exceed 36V DC Power Supply Effect DC Volts Trip point varies less than 0 001 of input span per volt change in DC supply 60 120HZz ripple Trip point varies less than 0 001 of input span per volt peak to peak of power supply ripple Series 361A User s Manual Single Dual Alarm Reference Test Conditions Input 4 to 20mA Setpoint at 20mA 5V DC Failsafe High Alarm Deadband at 1 Ambient 77 F 2590 12V DC supply Accuracy Repeata
6. SETPOINT VOLTAGE JUMPER CONFIGURATION DRAWING 4501 538 PROBE INSERTION POINTS CHANNEL 2 _ SEE NOTE 2 CH2 SETPOINT VOLTAGE me THE RED LED INDICATES ALARM THE GREEN LED SEE NOTE 5 INDICATES NORMAL THIS APPLIES TO BOTH THE FAILSAFE AND NON FAILSAFE OPERATING MODES fy TURN SETPOINT POTS CLOCKWISE TO GREEN NORMAL INCREASE THE SETPOINT COUNTER CLOCKWISE can REDUCE THE SETPOINT SEE NOTES 3 AND 4 L TURN THE CEADBAND POTS FULLY COUNTER CLOCKWISE FOR MINIMUM DEADSAND 1 4 OR FULLY CLOCKWISE FOR MAXIMUM SETPOINT VOLTE oar SETPOINT VOLTAGE COMMON DEADBAND GREATER THAN 100x SEE NOTE 5 DVM MAY CONNECTED TO THE SETPOINT CHAN T f CHANZ PROBE INSERTION POINTS ON THE FRONT PANEL We IMPORTANT INTERNAL THE VOLTAGE MEASURED HERE 5 TO 5 VOLTS JUMPER CONFIGURATION CORRESPONDING TO 9 TO 100 OF iNPUT YOLTAGE REQUIRED SEE NOTE 1 SPAN FOR CURRENT INPUTS 1 m AND 5 2dmA THIS VOLTAGE INDICATES TRUE SETPOINT WITHIN 5 OF SPAN THESE POINTS WILL ACCEPT UP TO 9 088 INCH DIAMETER PROBE NOT INSERT PROBE TIP MORE THAN 4 INCHES DEEP THE V1 AND V5 INPUT TYPES GAN SUPPORT 4 2 mA CURRENT INPUT SY PLACING A JUMPER WIRE BETWEEN THE INPUT AND TERMINALS FIGURE B RELAY CONTACTS ARE SHOWN IN THEIR DE ENERGENIZED CONDITION N C N C 4 CHANNEL 1 CHANNEL 2 1 CHANNEL 1 CH
7. parts and in some cases parts that have been selected for characteristics beyond that specified by the manufacturer Further Acromag has automated test equipment that thoroughly checks the performance of each alarm FIGURE A DC POWER CONNECTIONS DC VOLTAGE OR PROCESS CURRENT INPUT DE VOLTAGE PLACE JUMPER BETWEEN INPUT AND L FOR NOTE 1 4 2 INPUT MODEL 36 1A V 1 DMRN DIN NCR OTHER 361A MODELS CONNECTED SAME SETPOINT VOLTAGE PROBE INSERTION POINTS 0 OF VOLTAGE SPAN 5 140 OF VOLTAGE SPAN 1 0Y 5 0 22mA ALARM SETPOINT AND ADJUSTMENTS CLOCKWISE INCREASE SETPOINT VOLTAGE PROBE INSERTION POINT FIGURE B CONNECTION TO OPTIONAL 35PS POWER SUPPLY AC CURRENT INPUT AC CURRENT 5 AMPS FULL SCALE 4 TURNS INSULATED WIRE 19 to 55 CHANNEL 1 AND 2 ALARM STATUS INDICATORS GREEN LED INDICATES NORMAL RED LED INDICATES ALARM FAILSAFE OR NON FAILSAFE GREEN LEDa OUTSIDE RED LEO s INSIDE IMPORTANT INTERNAL JUMPER CONFIGURATION MECHANICAL RELAY CONTACTS SINGLE ALARM MODEL SMRN ONE SPDT FORM C SEALED RELAY DUAL ALARM MODEL DMRN REQUIRED TO SELECT HIGH OR LOW ALARM AND FAILSAFE OR NON FAILSAFE OPERATION MODES REFER TO JUMPER CONFIGURATION DRAWING TWO SPDT FORM SEALED RELAYS N C RELAYS ARE ELECTRO MAGNETIC DRY CONTACT NON LATCHING SEALEG TYPE RELAY CONTACTS ARE SHO
8. step 5 below 5 For High Alarms check the setpoint by reducing the input current until the relay changes state and the RED alarm LED turns OFF Then slowly increase the input current until the alarm just trips RED LED turns ON The input current should be within 0 1 0 016mA of the desired trip point If not perform steps 1 through 4 again 6 If increased deadband is required turn the DB1 control clockwise Vary the input signal near the trip point and determine the input values for pull in and drop out of the relay The difference between these values is the amount of deadband Note that readjusting the deadband potentiometer does not affect the setpoint adjustment LOW ALARMS 1 Set the deadband adjustment DB1 fully counter clockwise for minimum deadband approximately 0 5 for a pure DC signal 2 Adjust the input source to 12 000mA DC value desired for alarm setting in this example 3 For LOW Alarms turn the setpoint pot SP1 counter clockwise until the relay changes state and the RED LED turns OFF 4 Now turn the setpoint potentiometer SP1 clockwise very slowly just until the relay changes states and the RED LED turns ON The setpoint is now calibrated Check your calibration as noted in step 5 below 5 For LOW Alarms check the setpoint by raising the input current until the relay changes states and the RED alarm LED turns OFF Then slowly decrease the input current until the alarm just trips RED LED t
9. 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 Basic Alarm Printed Circuit Boards Military grade FR 4 epoxy glass circuit board 0 063 inches thick Printed Circuit Board Coating Fungus resistant acrylic conformal coat Terminals Compression type wire size 14 AWG maximum Case Self extinguishing black NYLON Type 6 6 polyamide thermoplastic UL94 V 2 General Purpose NEMA Type 1 enclosure Jumpers Gold flash over nickel contacts Testpoints Setpoint Voltage Will accept up to an 0 080 diameter probe tip Do not insert probe tip more than 0 4 deep Mounting Position Position insensitive MOUNTING DIN General Purpose Housing DIN Rail Mount accepts both rails G Rail 32mm Type EN50035 T Rail 35mm Type EN50022 Refer to Drawing 4501 540 for outline and clearance dimensions Shipping Weight 1 pound 0 45 Kg packed CERTIFICATION Consult the factory for current information on the availability of agency approvals e g CSA FM etc NCR No Certification Required INSTALLATION The Alarm is packaged in a general purpose type of enclosure Use an auxiliary enclosure to protect against unfavorable environments and locations Maximum operating ambient temperatures should be within 13 to 167 F 25 to 75 C for satisfactory performance Connect as
10. AMS WIRE INSERTION CLAMPS MODEL 461A SHOWN 12 PLACES 1 1 i MODEL 361A DIMENSIONS ARE IDENTICAL i I 1 RAIL DIN MOUNTING RAIL DIN MOUNTING SHOWN THIS SIDE SHOWN THIS SIDE N DIN EN 50035 32mm DIN EN 50022 35mm DIN MOUNTING SHOWN HERE DIN EN 50035 32mm RAIL DIN MOUNTING SHOWN HERE DIN EN 50022 35mm SCREWDRIVER SLOT FOR 2 89 REMOVAL FROM RAIL NOTE ADJACENT UNITS CAN BE MOUNTED 73 41 ON 1 6 INCH 4 mm CENTERS 3 35 85 09 3 55 90 17 A SON ie ee Ne ENCLOSURE DIMENSIONS FOR DIN RAIL MOUNTING NOTE ALL DIMENSIONS ARE IN INCHES MILLIMETERS mE 361A 461A HOUSING DIN MOUNT A D F a SERIES 361A 461A INTERPOSING RELAY CONNECTIONS PLUG IN RELAY CONTACT RATING PER APPLICATION SERIES 361A or 461A ALARM SERIES 361A or 461A ALARM TYPICAL DIN RAIL TYPICAL DIN RAIL MOUNTED RELAY MOUNTED RELAY SOCKET SOCKET CHANNEL 1 3 CHANNEL 2 CHANNEL 1 2 CHANNEL 2 I N C N C N C B C BI km LOCATE RELAY LOCATE RELAY NEAR LOAD A NO NEAR LOAD OUTPUT OPTION CONTACT SMRN OR DMRN PROTECTION CONTACT PROTECTION RELAY CONTROL DC RELAY POWER AC RELAY POWER DC POWERED INTERPOSING RELAY AC POWERED INTERPOSING RELAY NOTE 1 A DPDT RELAY IS SHOWN OTHER RELAY TYPES MAY BE USED 2 ALL RELAY CONTA
11. ANNEL 2 MECHANICAL RELAY CONTACTS MECHANICAL RELAY CONTACTS SMRN AND DMRN MODELS SMRN AND DMRN MODELS SERIES 361A CALIBRATION CONNECTIONS Acromag mixon MICK ESERIES 361A ELECTRICAL CONNECTIONS o 1 4501 555 HIGH LOW B OPTIONAL JUMPER FOR 3 20 INPUT HANN ai ai DBI FAILSAFE NONFAILSAFE p B ALARM LOGIC RELAY DRIVER f CHANNEL 1 RED N C STATUS LED s HIGH LOW B DUAL ALARM ONLY i HI tio rmzz gt ro B NOTE RELAY CONTACTS ARE SHOWN IN DE ENERGIZED POSITION B B rs 3 15 Y DMRN MODELS CHANNEL 2 COMPARATOR 5 2 ALARM LOGIC AND RELAY DRIVER CHANNEL 2 GRN RED STATUS LED s POWER ISOLATION FILTER SERIES 361A SIMPLIFIED SCHEMATIC 22 gt 10 3 0 FIGURE DC INDUCTIVE LOADS RELAY CONTACTS 1N40 6 OR EQUIVALENT FIGURE B AC INDUCTIVE LOADS El RELAY CONTACTS GE MOV METAL OXIDE VARISTOR RELAY CONTACT PROTECTION e SERIES 361A SIMPLIFIED SCHEMATIC AND RELAY CONTACT PROTECTION SERIES 361A SIMPLIFIED SCHEMATIC sea gt 1 14501 537 T_T er Ola Si 5 oe 4 be i 2 FEQS 35 TE OUTPUT POWER BOARD SAE
12. Acromag S User s Manual Series 361A Model 361A DC Powered Alarms Table of Contents Page 1 DeScription tis tt ieee Aes het ala a aaa s 1 Specifications diy oe 4 Calibration 5 General 6 List of Drawings Page Electrical Connections 4501 535 7 Calibration Connections 4501 536 8 Simplified Schematic Contact Protection 4501 537 9 Configuration Jumper Location 4501 538 10 Failsafe Non Failsafe Alarm Conditions 4501 539 11 Dimensions DIN Rail Mounting 4501 540 12 Interposing Relay Connections 4501 541 13 Alarm Two Wire Transmitter Connections 4501 547 14 AC Sensor Connections 4501 546 15 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 ACR
13. CTS SHOWN IN DE ENERGIZED CONDITION PP 561 461 BIR i 1 AC INPUT POWER i I AC HI 10 1 i t 1 I AC POWER DC POWER 4 20mA 2 16 to 36V NOTE INPUT GROUND G TERMINAL IS was NOT CONNECTED INTERNALLY 2 a_ I i CHANNEL 1 CHANNEL 1 TWO WIRE CHANNEL 2 CHANNEL 2 TRANSMITTER POWER SUPPLY 25PS AVAILABLE IN THREE OR POWER OPTIONS ALL ISOLATED 4 pe ne HI AC TWO WIRE TRANSMITTER Ss gt s FIELD MOUNTED CHANNEL 1 CHANNEL 2 CHANNEL 1 CHANNEL 2 DC POWERED ALARM AC POWERED ALARM SERIES 361A 1 INPUT SERIES 461A V1 INPUT ae ee aS 361A 461A TRANSMITTER CONNECTIONS Aroma T ee Te s st tare Re Oz enc 3614 4615 4501 547 A eB E 6 C es ee De a FIGURE 1 AC CURRENT 5 AMPS FULL SCALE 4 TURNS AC SENSOR FIGURE 2 OUNTED IN POWER AREA SENSOR INSULATED WIRE TURN COUNT NUMBER OF WIRES PASSING THROUGH CENTER HOLE SEE INPUT RANGE SELECTION TABLE USER SUPPLIED AC CURRENT TRANSFORMER C T va APPLICATION EXAMPLE B 115V 23 VAC ELECTRICAL CIRCUIT AC SOURCE DANGER HIGH VOLTAGE MODEL 5020 350 AC CURRENT SEN
14. OMAG INCORPORATED 30765 South Wixom Road PO Box 437 Wixom MI 48393 7037 USA Tel 248 624 1541 FAX 248 624 9234 Copyright 1995 Acromag Inc Printed in the USA Data and specifications are subject to change without notice 8500 545 A95H000 INTRODUCTION These instructions cover the model types listed in Table 1 below Supplementary sheets are attached for units with special options or features A Model Number Format 361 A Input Output Mounting Certification Calibration B Typical Model Number 361A V5 SMRN DIN NCR Table 1 series Notes Table 1 1 The Alarm can be ordered with or without the factory calibration C option Consult the selection and ordering guide for more information 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 361A is a DC powered DIN rail mounted alarm family that accepts either a process current or DC voltage input signal and provides single or dual alarm output relay contacts The Series 361A complements an entire family of Acromag flat pack DIN rail transmitters alarms and isolators each designed to be used as functional components that provide the user with a modular solution for a wide range of field applications The 361A is powered from a s
15. SOR CONNECTIONS APPLICATION EXAMPLE A AC CURRENT TRANSFORMER C T AC CURRENT 5 AMPS FULL SCALE 4 TURNS MOUNTED IN POWER AREA SENSOR AC CURRENT TRANSFORMER C T CONNECTIONS DISCONNECT POWER TO C T OR SHORT OUTPUT OF C T BEFORE REMOVING INPUT CONNECTIONS TO AC CURRENT SENSOR IF THIS PROCEDURE IS NOT FOLLOWED AN OPEN CIRCUIT C T WILL GENERATE HIGH VOLTAGES AND POSSIBLE DAMAGE WILL RESULT MOUNTED POWER AREA LEADS 12 IN RED AC CURRENT SENSOR AC CURRENT 20 AMPS FULL SCALE 1 TURN WIRE NUT NOTE DESIGN ALLOWS INADVERTANT OPENS OR SHORTS 1 lt 40 _____ 18 GA WIRE 55 OHMS CAUTION DO NOT CONNECT AC CURRENT DIRECTLY TO TRANSMITTER INPUT TERMINALS 361A V1 461A V1 WIXOM MICH mE AC CURRENT INPUT ELEC CONNECTIONS 361474614 i 1 9 45 1 546 1 1 TABLE 1 TURNS CHART INPUT RANGE SELECTION INPUT RANGE RMS TO 20A L i 10 20 i 1 t t 1 1 1 1 1 1 9 5 9 2A Q To 1A WIRE NUT 361A V1 461A V1 INPUT CONNECTIONS NOTE DESIGN ALLOWS INADVERTANT OPENS OR SHORTS CAUTION CONNECT TO AC CURRENT SENSOR ONLY DO NOT CONNECT AC CURRENT DIRECTLY TO INPUT TERMINALS k
16. 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 it into the terminal block Input wiring may be either a shielded or unshielded 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 input wiring be separated from relay contact wiring for safety as well as for low noise pickup 1 Power Refer to Drawing 4501 535 for power connections Connect DC power as shown in Drawing 4501 535 These alarms operate from DC power supplies only Supply voltage is not critical and should be between 10 and 36V Current draw is a function of supply voltage see Power specification Variations within rated supply limits will not affect the performance of the alarm Power terminal is reverse polarity protected diode coupled Ripple and Noise Supply ripple at 60 120 Hz will not affect alarm performance as long as the supply voltage does not drop below 10V Series 361A User s Manual Single Dual Alarm 2 Grounding The alarm 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 appl
17. WIRE NUT 561 461 INPUT CONNECTIONS NOTE DESIGN ALLOWS INADVERTANT OPENS OR SHORTS CAUTION CONNECT TO AC CURRENT SENSOR ONLY DO NOT CONNECT AC CURRENT DIRECTLY TO INPUT TERMINALS Be UU U
18. WN IN THEIR DE ENERGIZED CONDITION NOTE 1 ON V1 AND INPUT MODELS THE INPUT CAN BE CONFIGURED FOR 4 20 INSTALLATION OF AN EXTERNAL JUMPER BETWEEN THE INPUT AND L TERMINALS SEE LABEL ON UNIT FOR INPUT RANGE A CHANNEL 1 CHANNEL2 MECHANICAL RELAY CONTACTS SMRN AND DMRN MODELS JUMPER PRESENT FOR CURRENT INPUT N CHANNEL 1 CHANNEL MECHANICAL RELAY CONTACTS SMRN AND DMRN MODELS SERIES 361A ELECTRICAL CONNECTIONS w AC LO L2 ac LO NOTE INPUT GROUNO G TERMINAL NOT CONNECTED INTERNALLY A e ee ar mae MISERIES 3614 ELECTRICAL CONNECTIONS p set 1 245 1 535 FIGURE VOLTAGE INPUTS FIGURE B CURRENT INPUT V1 INPUT TYPES TO 1 v1 AND V5 INPUT TYPES ONLY SEE NOTE 6 8 INPUT TYPES 6 TO SV INPUT TYPES 10V V5 INPUT TYPES 0 TO 50 INPUT TYPES TO 188V PRECISION PLACE JUMPER BETWEEN CURRENT PRECISION 10 to 36 SOURCE INPUT AND L FOR 10 to 36 OC VOLTAGE 4 2 INPUT NOTE DI m SOURCE 4 20 A E O poapes 2 5 2 2 9 1 IMPORTANT INTERNAL JUMPERS MUST BE SET TO O LED TESTPOINTS SEE NOTE 5 a SELECT HIGH OR LOW ALARM AND FAILSAFE OR SETPOINT VOLTAGE NON FAILSAFE OPERATING MODES REFER TO CHANNEL 1 ALARM STATUS INDICATORS CH1
19. ble to better than 0 1 of input span for reference test conditions Ambient Temperature Range 13 F to 167 F 25 C to 75 C Ambient Temperature Effect Less than 0 01 of output span per OF 0 018 per C over the ambient range for reference test conditions Response Time A Built in fixed time delay of 100 milliseconds nominal The relay will transfer lt 100 milliseconds typical after the input signal exceeds the setpoint This delay helps prevent false alarms due to transient interference The relay will transfer within 50milliseconds after the input passes the deadband region as it returns into the normal range The red LED will light as soon as the input signal exceeds the setpoint However the relay will transfer after the time delay has expired When calibrating the alarm the LED s should be observed to indicate proper setpoint position Noise Rejection Common Mode Better than 1000 at 60 Hz 250 ohm unbalance typical Normal Mode 26dB at 60 Hz 250 ohm source typical RFI Resistance The unit will not trip under the influence of RFI when the input is 0 5 of input span from the setpoint voltage for RFI field strengths of up to 10V meter at frequencies of 27MHz 151MHz and 467MHz EMI Resistance Unit will not trip when input is 0 25 of input span from setpoint voltage with switching solenoids or commutator motors Surge Withstand Capability SWC Input Output terminations rated per ANSI IEEE C37
20. eadband is adjusted with a screwdriver and provides continuous blind adjustment over the full deadband range IMPORTANT Noise and or jitter on the input signal has the effect of reducing narrowing the instrument s deadband and may produce contact chatter Another long term effect of contact chatter is a reduction in the life of mechanical relay contacts To reduce this undesired effect increase the deadband setting Automatic Reset The 361A alarm provides momentary alarm action Non Latching That is the alarm will reset to its non alarm state as soon as the input signal is outside of the selected deadband If the deadband is set to its extreme 100 then the alarm is effectively latching and will not reset till the input signal is at or below 0 OUTPUT Electromechanical Relays fully sealed Contact markings on the enclosure label are for a de energized relay off the shelf condition To control a higher amperage device such as a pump an interposing relay may be used see Drawing 4501 541 Electrical Life CSA Ratings 25V DC 5A 100 000 operations resistive 48V DC 0 8A 100 000 operations resistive 240V DC 0 1A 100 000 operations resistive 120V AC 5A 30 000 operations resistive 240V AC 5A 30 000 operations resistive Contact Material Silver cadmium oxide Breakdown Voltage Between open contacts 1000VAC rms Between contacts and coil 1500VAC rms 50 60 Hz for one minute Mechanical Life 20 m
21. er required 0 Oto 10V DC with 100KQ minimum input impedance V50 to 50V DC with 500KQ minimum input impedance V100 to 100V DC with 1MQ minimum input impedance IMPORTANT For V1 and V5 input ranges the 4 20mA DC input range is selected via the installation of an external jumper between the Input L and Input terminals This connects an internal shunt resistor to the input AC Current Sensor 5020 350 Optional This sensor is a highly accurate toroidal instrument transformer used to convert an AC current signal to a low level DC milliampere signal of 0 to 11 17mA The input AC current range is a simple function of the number of turns placed on the AC Current Sensor see Table 2 below The user configures the AC current sensor with the required number of primary turns to obtain the desired input span Table 2 AC Sensor Turns AC CURRENT PRIMARY SENSOR OUTPUT Oto 5 Amps AC 0 to 11 17mA Oto 2 Amps AC 0 to 11 17 Oto 1 Amps AC 0 to 11 17 The output wires on the sensor are polarized Red is plus and Black is minus Normally these output wires are attached to one end of a cable user supplied and the other end connects to the analog input s and terminals Input Burden A function of the wire gauge resistance used for the primary turns Series 361A User s Manual Single Dual Alarm Input Overload The AC Current Sensor will withstand overloads as follows
22. gin disassembly refer to Drawing 4501 538 place the screwdriver at point A left side of the alarm While pressing the blade into the seam use a twisting motion to separate the sides slightly Repeat this operation at point B 2 Now that the two pieces have been partially separated use the screwdriver blade to work the left side of the package loose by working around the alarm and carefully prying the sides further apart Repeat this action until it is easy to remove the left side from the plastic pins holding the pieces together 3 Repeat this operation for the right side starting at points C amp D CAUTION If the two PC boards become separated while taking the package apart re align the boards making sure that both interconnection headers are aligned with their mating sockets and carefully push the boards back together Jumper Configuration Shunt Blocks Shunt blocks are provided to accommodate in field configuration changes In case of misplacement additional shunt blocks may be ordered from the factory When ordering additional shunt blocks refer to part 1004 332 1 HIGH HI or LOW LO Alarm action Refer to table on Drawing 4501 538 for proper jumper shunt position 2 Failsafe or Non Failsafe Mode Refer to table on Drawing 4501 538 for proper jumper shunt position 3 IMPORTANT Mark the Alarm s Configuration on the calibration label located on the enclosure Example CH1 HI FS or CH2 LO NFS Series
23. icable codes 3 Output Contacts Wire contacts as shown in the connection drawing 4501 535 See label of unit for relay contact rating Refer to Drawing 4501 537 for suggestions on relay contact protection Electromechanical Relay Contact Protection To maximize relay life with inductive loads external protection is required For DC inductive loads place a diode across the load 1N4006 or equivalent with cathode to and anode to For AC inductive loads place a MOV across the load See Drawing 4501 537 IMPORTANT Noise and or jitter on the input signal has the effect of reducing narrowing the instrument s deadband and may produce contact chatter The long term effect of this will reduce the life of mechanical relays contacts To reduce this undesired effect you should increase the deadband setting 4 V mA Input Connect input per connection Drawing 4501 535 Observe proper polarity If the input is a 4 to 20mA signal a jumper must be installed between the Input and Input L terminals Current is delivered to the Input terminal and returned at the Input terminal Voltage signals are connected to the Input and terminals NOTE The Input Output and Power circuits are isolated from each other allowing the input circuit to operate with common mode voltages up to 250V AC or 354V DC off ground ona continuous basis 5 AC Current Input The AC Current Sensor is isolated and can be used in AC circuits
24. illion operations Note External relay contact protection is required for use with inductive loads SMRN Single Alarm S one Single Pole Double Throw SPDT Form C electromagmetic MR dry contact sealed relay Non Latching N DMRN Dual Alarm D two Single Pole Double Throw SPDT Form C electromagmetic MR dry contact sealed relay Non Latching N Alarm Mode HIGH or LOW Alarm field selected via internal jumpers each channel on dual alarms Can be field configured to trip on increasing signal HIGH Alarm or decreasing signal LOW Alarm Refer to Jumper Configuration see Drawing 4501 538 Relay Operating Mode Failsafe and Non Failsafe operation is field selectable via internal jumpers each channel of dual alarms Failsafe Normally Energized The relay is energized ON in the normal range of inputs and de energizes drops out when the input signal value exceeds the setpoint or power is lost Non Failsafe Normally De energized The relay is de energized in the normal range of inputs and energizes pulls in when the input signal value exceeds the setpoint value Alarm LED s A pair of LED s one GREEN and one RED indicate the status of the alarm on a single alarm two pairs of LED s on dual alarms The GREEN LED indicates a Normal condition and the RED LED indicates an Alarm condition for both the Failsafe and Non Failsafe mode of operation The logic of the alarm is such that the Red LED is
25. ingle 10 to 36V DC supply see the Series 461A for AC powered alarms In applications requiring a single alarm the alarm can use available DC power or can be wired to an Acromag Series 35PS power supply module available for both 115VAC 230VAC operation The 361A input power terminal is diode coupled providing reverse polarity protection and allowing the unit to be connected to redundant power supplies Multiple alarms may share a single supply The safe compact rugged and reliable design of this alarm makes it ideal for control room or field applications The electromechanical relay output provides one SPDT Form C relay contact output single alarm or two SPDT Form C relay contact outputs dual alarm The unit can be configured as a HIGH or LOW single alarm or a HIGH HIGH HIGH LOW LOW HIGH or LOW LOW dual alarm The operating mode of each relay can be set to Failsafe Normally Energized or Non Failsafe Normally De Energized The term Failsafe refers to the condition that the relay is energized during normal conditions and de energized upon alarm or power loss to the unit The Non Failsafe mode of operation is primarly used for simple control applications and acts opposite the Failsafe mode that is the relay is energized during alarm conditions Series 361A User s Manual Single Dual Alarm Each channel has one pair of LED s Green and Red that provie a visual indication of the alarm condition on the front
26. m Alarm Type Failsafe Output DPDT Relay Contacts A Adjustment Procedure High and Low Alarms Notes Adjustment Procedure 1 The adjustment procedure is similar for other inputs 2 The adjustment procedure is the the same for both Failsafe and Non Failsafe operation 3 When the RED LED is ON it indicates an alarm condition for both the Failsafe and Non Failsafe mode of operation The GREEN LED is ON when the signal is in the Normal operating range 4 lf unit is a dual alarm DMRN models repeat this procedure for the second channel using the SP2 and DB2 adjustments SetPoint 2 and DeadBand 2 5 Noise and or jitter on the input signal has the effect of reducing narrowing the instrument s deadband and may produce contact chatter To reduce this undesired effect increase the deadband setting HIGH ALARMS 1 Set the deadband adjustment DB1 fully counter clockwise for minimum deadband approximately 0 5 for a pure DC signal 2 Adjust the input source for 12 000mA DC value desired for alarm setting in this example 3 For High Alarms turn the setpoint potentiometer SP1 clockwise just until the relay changes states and the RED LED turns OFF If the RED LED is already off proceed to step 4 4 Now turn the setpoint potentiometer SP1 counter clockwise very slowly just until the relay changes state and the RED alarm LED turns ON The setpoint is now calibrated Check your calibration as noted in
27. nded to be mounted close to the current being measured and the wire connecting the sensor to the 361A s input terminals can be up to 400 feet long 18 gauge wire The AC current input span is simply determined by the number of primary turns passing through the center of the toroid Example a 0 to 20A AC input range requires one turn to pass through the hole in the sensor while a 0 to 5A AC input range requires four turns See specifications for other ranges The 361A alarm is RFl protected operates over a wide temperature range and features excellent temperature coefficients which minimize the effects from harsh plant environments The versatile DIN rail mount can accomodate a variety of mounting applications See Drawing 4501 537 for a simplified schematic Alarm input and power wiring is inserted at the top of the unit while output contact wiring is inserted at the bottom of the unit Screws to secure the wiring are located on the front panel Connectors are screw clamp type and accept wire size from 26 to 14 AWG Key 361A Features Process Current or Voltage Input Green Red LED Trip Power Indicators Single or Dual Alarm 15 turn Setpoint Adjustment 15 turn Deadband Adjustment Failsafe Non Failsafe Mode HIGH LOW Alarm Operation Wide Ambient Temperature Range 25 C to 75 C Mechanical Relay 5A Contacts Flexible DC Power from 10 to 36V Automatic Alarm Reset No Point to Point Internal Wiring Easy Field Jumper Configurati
28. of the unit When the Green LED is ON it indicates a Normal condition and when the Red LED is ON it indicates an Alarm condition This applies to both the Failsafe or Non Failsafe mode Thus power status is simply indicated by an illuminated LED The alarm setpoints are individually adjustable over the full input range of the unit and the deadband for each setpoint is adjustable from 1 to 100 percent The setpoint voltage for each channel may be monitored via DVM testpoints accessible from the front of the unit The deadband adjustment does not affect setpoint adjustment Rather it determines the amount the input signal has to return into the normal operating range before the relay contacts will transfer Deadband is normally used to eliminate false trips or alarm chatter caused by fluctuations in the input near the alarm point To implement an AC Current alarm for inputs up to 20A an optional AC current sensor Acromag Model 5020 350 ordered separately is used in conjunction with the 0 to 1V DC V1 input type configured for current input external jumper required The full scale output of this transducer is 11 17mA DC An internal 500 shunt resistor installed in the module converts the 0 11 17mA transducer signal to a 0 0 5585V DC input signal The sensor itself is an insulated highly accurate toroidal instrument transformer that outputs a safe low level DC milliamp signal to the 361A s analog input terminals The sensor is inte
29. on Setpoint Voltage Monitor Points Allows use of Redundant Supplies SPECIFICATIONS Function This family of single or dual DIN rail mounted DC powered alarms accept either a process current or voltage input signal and provide a single or dual mechanical relay output Internal jumpers allow the alarm to be field configured for use as a HIGH or LOW alarm in either Failsafe or Non Failsafe operating modes Unit provides three way isolation between input output and power Setpoint and Deadband adjustments utilize 15 turn potentiometers The Setpoint voltage can be monitored via testpoints at the front panel 0 5V represents 0 100 of input voltage span The Deadband adjustment is a blind adjustment between 1 100 of span Red and green status LED s provide a visual indication of the alarm condition for each channel MODEL SERIES 361A Color coded with a Yellow label INPUT The V1 and V5 input option can also be configured at the input terminal block for either a 4 20mA or voltage input see connection drawing 4501 535 All input circuits utilize a high impedance pull down resistor 1MQ for V1 and V5 units V1 0 to 1V DC with 1MQ minimum input impedance or 4 to 20mA DC into 50Q shunt resistor jumper required This range used with optional AC Current Sensor 5020 350 see drawings 4501 535 and 4501 546 for details V5 0 to 5V DC with 1MQ minimum input impedance or 4 to 20mA DC into 250Q shunt resistor jump
30. shown in the Connection Diagram 4501 535 To verify calibration refer to the CALIBRATION section Mounting Mount alarm assembly refer to Drawing 4501 540 for mounting and clearance dimensions DIN Rail Mounting Use suitable fastening hardware to secure the DIN rail to the designated mounting surface The alarm is supplied with the DIN Rail mounting option DIN and can be mounted to either the T or G style rails Installation of the alarm to the rail depends on the type of DIN rail used Units can be mounted side by side on 1 6 inch centers if required T Rail 35mm Type EN50022 To attach an alarm to this style of DIN rail angle the top of the unit towards the rail and locate the top groove of the adapter over the upper lip of the rail Firmly push the unit towards the rail until it snaps solidly into place To remove an alarm insert a screwdriver into the lower arm of the connector and pull downwards while applying outward pressure to the bottom of the unit G Rail 32mm Type EN50035 To attach an alarm to this style of DIN rail angle the unit so that the upper groove of the adapter hooks under the top lip of the rail Firmly push the unit towards the rail until it snaps solidly into place To remove an alarm pull the lower part of the unit outwards until it releases from the rail and lift the unit from rail Electrical Connections The electrical connections are independent of the mounting configuration
31. up to 250V AC 50 or 60 Hz Itis designed to be mounted near the AC current being measured The sensor outputs a low level DC milliampere signal allowing the transmitter to be mounted remote from the AC signal using small gauge wire The sensor s output Red Black wires can be shorted open circuited or removed from the transmitter s input terminals without hazard to personnel or to the AC Current Sensor AC Current Sensor Per the Input Range chart in the Specifications Section loop the required number of turns through the toroid for the full scale range required by your application Use the cable tie provided with the sensor to mechanically secure it refer to Drawing 4501 546 DANGER If the AC Current Sensor is used with an AC Current Transformer C T disconnect power to the C T or short the output of the C T before removing the wire going through the AC Current Sensor If this is not done an open circuited C T will generate high voltage hazardous and possible C T damage The sensor output wires should be connected to the extension cable wires using wire nuts or equivalent Sensor output wires are color coded RED and BLACK proper polarity must be observed CALIBRATION This section provides information for alarm configuration and calibration If the unit was factory calibrated jumpers have been placed in their proper positions and verification of the calibration can be made per the Adjustment Proced
32. ure If the calibration of the unit is to be changed first go to the Shunt Block Configuration Procedure before going to the Alarm Adjustment Procedure Alarm Shunt Block Configuration Procedure The Series 361A Alarm is quite universal in that it can be configured as a HIGH HI or LOW LO alarm and can operate in the Failsafe or Non Failsafe mode Before the adjustment procedure can proceed the jumpers must be configured for the requirements of the application refer to Drawing 4501 538 for details To gain access to the configuration jumpers first remove the alarm from the installation Second remove the circuit boards from the plastic enclosure as described in the following Disassembly Procedure refer to Drawing 4501 538 Third configure the jumpers shunt blocks as described in the Jumper Configuration procedure below Fourth install the circuit board into the plastic enclosure as described in the Assembly Procedure Disassembly Procedure for the 361A Plastic Housing The plastic housing has no screws it snaps together A flat head screwdriver Acromag 5021 216 or equivalent is needed to pry the housing apart as described in the following steps CAUTION Do not push the screwdriver blade into the housing more than approximately 0 1 inches while prying it apart Handling of the printed circuit boards should only be done at a static free workstation otherwise damage to the electronics could result 1 be
33. urns ON The input current should be within 0 1 0 016mA of the desired trip point If not perform steps 1 through 4 again 6 If increased deadband is required turn DB1 control clockwise Vary the input signal near the trip point and determine the input values for the pull in and drop out of the relay The difference between these values is the amount of deadband Note that readjusting the deadband potentiometer does not affect the setpoint adjustment NOTE Optionally the setpoint may be adjusted by connecting a DVM to the setpoint voltage testpoints on the front of the alarm The voltage measured here is 0 to 5V corresponding to 0 to 100 of input voltage span For current inputs a setpoint voltage of 1 to 5V corresponds to 4 to 20mA of input current This setpoint voltage represents the true setpoint to within 1 of input span and is a more convenient method of setpoint adjustment where high precision is not required These test points will accept up to an 0 080 inch diameter probe tip do not insert probe tip more than 0 4 inches deep GENERAL MAINTENANCE The alarm 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 alarm is to exchange it with a known good unit It is highly recommended that a non functioning alarm be returned to Acromag for repair since Acromag uses tested and burned in
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