Ascon Tecnologic S.r.l. via Indipendenza 56, 27029 - Vigevano (PV) Tel.: +39 0381 69871, Fax: +39 0381 698730 Configurable Indicator - Transmitter Universal JM series JT series for transducers INSTRUCTION MANUAL MIU.JM/JT -1/92.06/E COD. J30-154-1AJM/JT E Ascon Tecnologic Srl www.ascontecnologic.com CONTENTS 1 IDENTIFICATION OF MODEL ......................................page 1 2 FUNCTION OF KEYS AND DISPLAYS..........................page 3 3 DIMENSIONS, INSTALLATION ....................................page 5 4 ELECTRICAL CONNECTIONS ....................................page 7 5 ALARMS .......................................................................page 13 6 PASSWORDS ...............................................................page 16 7 PROGRAMMING INSTRUCTIONS..........(see enclosed leaflet) CONFIGURATION PARAMETERS 8 OPERATING INSTRUCTIONS.................(see enclosed leaflet) SET POINT ALARMS HOLD FUNCTION 9 TECHNICAL DATA........................................................page 17 SERIAL COMMUNICATION (see INSTRUCTION MANUAL “supplement serial communication” MIU.JM/JT-CS/E supplied separately) 1 • IDENTIFICATION OF MODEL Thank you for having chosen an ASCON indicator-transmitter The instruments of the JM/JT series belong the last generation of microprocessor based indicators. They can be fitted with 2 or 4 alarms and with serial communication to be inserted in a distributed control network. The operating mode can be configured, according to the required application. 1.1 Model code Model code JM JT Configuration code A B C D Power supply A 100 …240V 50 Hz 16 …28V 50 Hz and 20…30 Vdc Serial communication 3 5 OPTIONS Beginning and end of scale values B None 20mA C.L. Std Ascon protocol 20mA C.L. Modbus/Jbus protocol 0 1 2 Retransmission of measurement C None 4...20 mA 0...10 V 0 1 2 Alarms D Without 2 alarms 4 alarms (only for JM models) 0 2 4 1 5832 1 • IDENTIFICATION OF MODEL 1.2 Configuration code Configuration code E F G H I L M Beginning and end of scale N O OPZIONI 2nd block 1st block Model code E F G H Input measurement "X" Alarm Y1 Alarm Y2 Only for JM models Only for JT models Alarm Y3 I Alarm Y4 L Power supply for transducers M 5832 N O Beginning and end of scale (only for mA and Volt inputs) The instrument is usually configurated in factory. If at power-up appears ! the indicator IS NOT CONFIGURED 9999 To configure the indicator follow the instructions for configuration from the enclosed leaflet 2 2 • FUNCTION OF KEYS AND DISPLAYS 5832 Flap door 12 1 Withdrawal screw 11 Seal IP54 2 10 Set point and parameter menu 3 9 Select digit 4 8 Increment digit 5 7 6 Display of measurement X Alarm Y1 'ON' Alarm Y2 'ON' Alarm Y3 'ON' Alarm Y4 'ON' Hold function active DISPLAY 1 - Measurement X Normally: displays the input value expressed in (green) engineering units 14 5832 8888 ____ 8888 ---- If above the end of scale If below the beginning of scale - During programming: displays alternatively the mnemonic codes and the data values - During configuration: displays alternatively the 1st and 2nd block of the configuration code 3 2 • FUNCTION OF KEYS AND DISPLAYS ALARM LEDS 7 - Alarm 2 Uscita 1Y1 (rossa) 1 3 - Alarm 2 2 • The red led (for each alarm) - flashes to signal the alarm state - is lit when the alarm has been acknowledged and the alarm state is ON again (for ISA A configuration only) 4 - Alarm 3 3 5 - Alarm 4 4 HOLD LED 6 - HLD Function HLD Lit when the function "Peak" or "Valley" capture or the "Freeze" of the last measurement is activated KEYS 7 - Increment digit Increments the value of the flashing digit from 0...9 8 - Select digit Selects the digit to be modified 9 - Menu Keys for modifying the numeric values of all data (see enclosed leaflet) To display or modify the alarm Set points To scroll the parameters to be programmed and to enter values 4 3 • DIMENSIONS, INSTALLATION 3.1 - Overall dimensions (in compliance with DIN 43700) 150 14 110 min. 150 min. with protection IP65 Ring with hook and locking screw 96 45 +0.6 Flap 60 min. 65 min. with protection IP65 48 Advised thickness 1 ÷ 16 Wiring protection plate 92 Panel cutouts +0.8 3.2 • Mounting A • Panel fitting B • Fixing with ring Install away from: - heat sources - corrosive gases - dusty environments Holding hooks Knurl for hook hold ! Locking screws AMBIENT: Temperature: 0 ÷ 50 °C Humidity: 30 ... 85 RH% Seal ring fitting C • Screw locking D • Label for engineering units 5832 if different from °C remove and apply label with requested unit 2 O m rh 5 % labels supplied C O % A kW psi Bar Do NOT force Nm 3 /h H mV V mA R % ! Pa kPa MPa l/m m 3/h °F % cross screwdriver 3 • DIMENSIONS, INSTALLATION A • Terminal board B • Release screw terminals screw terminals M3.5 Plate pin 1 Lift the plate to release the pin Wiring protection plate Plate screw Reference junction thermometer 3 golded terminals for input signal 2 rotate the plate C • Effecting connections D • Protecting the terminal board Cable wires section N° With eyelet terminals 1 rotate the plate 2 max.6.9 With fork terminals 1 max.6.9 0.25 ÷ 2.5 AWG 22 ÷ 14 7 With tinned wire 2 Press the plate to plug in the pin 2 6÷7 Preferential 6 4 • ELECTRICAL CONNECTIONS Although this controller is designed to resist the heaviest disturbances encountered in industrial environments (level IV of standard (IEC 801-4), you are advised to keep to the following precautions: Precautions Single out supply line from others power lines Keep away from electromagnetic contactors and motors ! Keep away from SCR power units, especially if with phase control Advised wiring Power supply and outputs wires A C B D A E F B D C E Low level signal wires Power supply A Logic inputs C Relay alarms B Serial communication D Measurement input E Measurement retransmission F 7 F 4 • ELECTRICAL CONNECTIONS Wiring diagram for JM models 1 Single power supply 100...240 Vac 11 12 4 13 14 Y1 Alarms (option) 15 16 Y3 Measurement retransmission (option) 5 17 Y2 18 19 20 Y4 Y5 COM 21 IL1 IL2 IL3 22 23 24 +24 Vdc (power supply for transmitters) 1 2 Logic inputs 2 3 6 4 RX TX Serial communication (option) 6 Input measurement X 7 4…20 mA 3 9 Pt100 A 10 B B J, L, K, N, S, R, T,W 2-wire transmitter i mA ,Volt, mV Wiring diagram for JT models - (for transducers) 1 Single power supply 100...240 Vac 11 12 4 Alarms (option) 13 14 Y1 R. CAL. 15 17 Retransmission of measurement (option) 5 18 19 Y2 20 Y5 COM 21 3 1 IL2 IL3 22 23 24 Stabilized power supply 5/10 Vdc 30 mA 28 29 Logic inputs 2 TX 6 IL1 3 7 4 RX Serial communication (option) 2 8 Transducer 9 4 • ELECTRICAL CONNECTIONS 1 • Single power supply Power supply 11 "Switching" type • Standard: 85…264Vac, 50 Hz • Low voltage: 18…28Vac, 50 Hz 20…30Vdc Power: 4VA 12 2.1 • Input of measurement "X" for JM models - Universal A - For THERMOCOUPLES • Observe polarity 7 9 • For extension, use a compensation cable suitable for the thermocouple used • The eventual shield must be well earthed at only one end Line max. 150 Ω B - For RTD Pt100 7 A 9 • For 3-wire connection, use cables of the same section (min. 1mm2) • For 2-wire connection, use cables of adequate section (min. 1,5mm2 ) 10 B Note: with a 15 m. probe to controller distance and a 1.5 mm2 section cable, the error is about 1 °C. B for 3-wire connection only Line max. 20 Ω per wire C • For, mA dc, V dc +24 Vdc 6 7 Ri 9 com. For 2-WIRE TRANSMITTER 3 or 4-WIRE TRANSMITTER +24 Vdc +24 Vdc 6 7 Auxiliary supply for transmitter Input mA, mV, Volt Ri = 30 Ω for mA Ri = 10 KΩ for Volt i X 9 Ri 9 4…20 mA Transmitter 6 7 Ri 9 i 4…20 mA Transmitter X 4 • ELECTRICAL CONNECTIONS Schema 2.2 • Input di for collegamento JT models for transducers 17 • Power supply for bridge: 28 (+) 29 (—) stabilized 5Vdc or 10 Vdc ±5% (programmable from keyboard max. current 30 mA) 18 Calibrating contact Stabilized power supply 5/10Vdc 28 • Input: 7 (+) 9 (—) 0...60 mV or 0...300 mV (selectable in configuration) 29 Note: The calibrating contact makes easy and fast the "span" calibration 7 9 Transducer Calibration resistor (80% span) 3 • Logic inputs 21 22 23 24 COM IL1 IL2 IL3 C1 C2 C3 External contacts The permanent closing of the external contacts C1, C2, C3 allows: • To freeze the measurement (C1) • To store a peak (C2) • To acknowledge alarms (C3) (Only for ISA alarm, C3 has to be closed for at least 2 sec) 10 4 • ELECTRICAL CONNECTIONS 4 • Contact alarm outputs (options) A • JM models, with 2 alarms V~ Loads 13 14 16 17 Y1 Y2 Alarm 1 Alarm 2 B • JM models, with 4 alarms 13 V~ Loads Loads 14 15 16 17 18 Y1 Y3 Y2 Y4 Alarm 1 Alarm 3 Alarm 2 Alarm 4 ! In case of power cutoff, the relays are deenergized and therefore the contacts are open C • JT models, with 2 alarms V~ Loads 13 14 15 Y1 Y2 Alarm 1 Alarm 2 11 2 or 4 contacts, rated 5A/250Vac for resistive loads (switchings 2x105 m i n . a t 5 A / 2 5 0 Va c ) For the choice of type and operating mode see page 14 4 • ELECTRICAL CONNECTIONS 5 • Retransmission of measurement, output Y5 (option) It is galvanically isolated: 4..20 mA, max. 10Vdc, load 500Ω max. or 0..10Vdc, max 20 mA, load 500Ω min. 19 20 Y5 Load 6 • Serial communication (option) TX 1 RX 2 Transmission 3 4 Interface 20 mA C.L. passive and galvanically isolated See Instruction Manual "SUPPLEMENT SERIAL COMMUNICATION MIU.-CS/E" supplied separately Zener 2,7 V Reception Note Zener 2,7 V Only for 20mA C.L. 12 5 • ALARMS 1 • SELECTING THE OPERATING MODE In order to define the alarm operating mode select for each alarm: See leaflet: 7 • Programming instructions In configuration phase (See configuration code, indexes G-H-I-L) 1° TYPE OF 2° ALARM ACTION MODE ALARM Disabled Activated above the threshold Normal H Hysteresis Alarm state Threshold (Set point) With ISA A sequence and acknowledgement Hysteresis Activated below the threshold H Alarm state Threshold (Set point) In programmation phase (See alarm configuration, indexes from Ø to 7) 3° ALARM INHIBITION 4° STATE OF MODE AT STARTUP Disabled CONTACT NO Enabled ON Slope up alarm action inhibited alarm action activated NC IN CASE OF INPUT FAILURE In alarm state closes Startup alarm threshold 5° SAFETY STATE NON-Alarm state In alarm state opens OFF alarm threshold Alarm state Slope down Startup Note: 3°-4°-5° with the end configuration index 7 are preset in factory (default) with the 13 5 • ALARMS 2 • OPERATION A • Normal type Example with normal type alarm, activate high and state of contact NO (in alarm closes) NON-alarm state ALARM state Return to NON-alarm Measurement Alarm Set point State of contact NO Led state Flashes B • -With ISA A sequence Example with alarm with ISA A sequence, activate high and state of contact NC (in alarm opens) NON-alarm state ALARM state Return to NON-alarm Acknowledgement in ALARM state Measurement Alarm Set point State of contact NC Flashes NON-alarm state ALARM state Led state lit Return to NON-alarm Acknowledgement in NON-alarm state Measurement Alarm Set point State of contact NC Flashes Flashes 14 Led state 5 • ALARMS 3 • ALARM ACKNOWLEDGEMENT (for iSA A only) Acnowledgement mode Moment of acnowledgement LED In alarm Alarm acknowledged Pressing the key IL3 21 Closing C3 or at least for 2 sec. 24 C3 Measurement is again in alarm state Lit (see Note) Measurement is come back to NON-Alarm state Flashes ! Switched off In case of mains cutoff, relay is deenergized and the relative contact is open Note: Switched off when Measurement return to NON-alarm state 15 6 • ACCESS CODE In order to protect the configuration or some important parameters against inadvertent alterations or tampering, during programming it is necessary to enter password 6.1 Password of access to configuration WpAss NO OK 3333 Enter password of access to configuration (see enclosed leaflet) 3333 Return to normal operation YES Enter configuration 6.2 Password of access to the parameter group WpAss NO OK 1111 Enter password of access to the parameter group (see enclosed leaflet) 1111 Return to normal operation YES Enter into parameter group 16 12 • TECHNICAL DATA A/D Converter: Common features Measurement 62 msec. sampling time Time constant of 0 …30 sec measurement filter: Input shift: -50 … +50 digit RTD: Pt100Ω , (IEC 751), line 20Ω max. (3-wires) Thermocouples J-K-N-S-R-T-W (IEC 584), L (DIN 43710), line 150Ω max Input measurement (configurable) mA dc Type mV dc V dc Auxiliary power supplies Auxiliary inputs 50.000 points 4..20mA, _ 0..20mA, Ri 30Ω with or without 2√ 0..60mV, 0..300mV, Ri 10MΩ 0..1Vdc, 0..10Vdc, Ri 10KΩ with _ or without 2√ 0..60mV, 0..300mV, Ri 10MΩ (JT models only) Zero: within±10% of the measurement range End of scale: at 80% of scale span With configurable scale engineering units Accuracy 0.2% ±1 digit (at 25°C amb.) 0.1% ±1 digit for input in current or voltage 24 Vdc ± 10%, 20 mA max for 2-wire or 3 or 4-wire transmitters 5 or 10Vdc ±5% selectable, 30 mA max. for bridge transducers (JT models only) 3 logic to freeze the measurement, store a peak, acknowledge alarms Relay output 1 contact, 5A/250 Vac max. Signalling Red led, flashing in alarm state, lit after acknowledgement (if configured with ISA A sequence only) Set point: settable within the scale Alarms Hysteresis: Y1 - Y2 - Y3 - Y4 configurable (for Action delay every alarm) Type: Action mode: for input for RTD or thermocouples 0.1 … 10.0 % scale span 0 …100 sec. Disabled, normal, with ISA A sequence In configuration (indexes G-H-I-L) Active above or below the threshold Contact state NO closes in alarm state NC opens in alarm state Security in case of anomaly ALARM state NO alarm state Alarm inhibition at startup: Disabled or enabled operation Hold function Stores a max. or min. peak or freezes the last measurement effected (see operative instructions) 17 In programming (see instructions separately) 12 • TECHNICAL DATA Retansmission Current output: of meas. output Y5 (option) Voltage output: 4..20mA (500Ω max, 10Vdc max) 0..10Vdc (500Ω min, 20mA max) galvanically isolated Serial Passive and galvanically isolated interface 20 mA C. L. communication For other data see manual MIU.-CS/E (option) Protections: Single power supply General features Access to parameters by password Access to Set point 3 levels modification, indication only, no access Immunity to disturbances: level IV, standard IEC 801-4 Storing data in non-volatile memory for unlimited time Standard model 100..240V, 50Hz, -15% + 10% 250 Vac max. Low voltage model 24V, 50Hz, -15% + 10% or 24Vdc ± 15% Isolation group C according to VDE 0110 Climatic group KWF according to DIN 40040 Ambient temperature 0..50°C, humidity 35..85HR% Protection Front: IP54 standard (IP65 with Kit F10-170-2A101) Case: IP30, terminal board IP20 Material Self-estinguishing 94V1 Weight about 480 gr. Dimensions 48x96, depth 150 mm., according to DIN 43700 18 GUARANTEE The equipment is guaranteed free from manufacturing defects for 1 year after installation, for a maximum of 18 month after delivery. Faults caused by use other than that described in the operating instructions are excluded from the guarantee. Ascon SPA Via Falzarego, 9/11 20021 Bollate (Milano) Italy Tel. 02 333371 - Fax 02 3504243 7 • PROGRAMMING INSTRUCTIONS • JM and JT SERIES INDICATORS KEYS AND DISPLAY FUNCTIONS MENU Enter the functions menu pressing successively the key DISPLAY From normal operation normal operation during programming Measurement Mnemonic codes and data values Conf. KEYS Select menu 278.5 of parameters and configuration Increment digit To modify data values Select digit Access and Enter par. Display of the first block of the configuration code 6021 Access to parameters second block of the configuration code NO OK Access to configuration pAss of parameters and configuration SI Entering password of access to configuration (see chap. 6 page 16) ! If not configured at the power up appears 9999 NO Hold function activated Alarm leds OK YES and the configuration is entered directly LEDS Con.1 ALARM CONFIGURATION INDEXES State of contact during normal operation Alarm inhibition at startup Condition Led State of contact State of contact in case of input failure (safety state) Condition State of contact OFF NON-alarm NO ALARM NC NON-alarm OFF NO ALARM ALARM NO closes NON-alarm NO closes ALARM NC OFF NC OFF NC ALARM OFF NO NON-alarm NC opens ALARM NO closes OFF NO ALARM OFF NO NON-alarm NC opens OFF NON-alarm NC ALARM NC ALARM closes OFF opens opens E F -200…600°C Pt 100 Pt 100 -99.9...300,0°C For JM models 0...600°C 0 ...2200°C Type L 0 ...600°C Thermocouples IEC 584 Type K Type N 0 ..1200°C 0...1200°C Type S 0...1600°C Type R Type T 0...1600°C -100..400°C JT _ with or without 2√ Type J Type W * 4...20 mA Conf. eng. units 0...20 mA Conf. eng. units 0...60 mV Conf. eng. units 0...300 mV 0...1V Conf. eng. units Conf. eng. units 0...10V Conf. eng. units 0...60 mV calibrate Conf. eng. units 0...300 mV calibrate Conf. eng. units 0 1 2 2 3 4 5 6 7 8 9 9 9 9 9 9 9 9 0 0 0 2 0 0 0 0 0 0 0 1 2 3 4 5 6 7 Type and operating mode, Alarm Y2 Disabled Normal With ISA A sequence Active high Active low Active high Active low Type and operating mode, Alarm Y1 Disabled Normal With ISA A sequence Active high Active low Active high Active low JM - JT Disabled Normal With ISA A sequence Active high Active low Active high Active low Type and operating mode, Alarm Y4 JM Disabled Normal With ISA A sequence Active high Active low Active high Active low I 0 1 2 3 4 sc.hi End of scale value from beginning of scale to end of scale Co.y3 Co.y4 H 0 1 2 3 4 G 0 1 2 3 4 Square root* 0 - exluded 1 - enclosed ! Alarm configuration index Y1 0…7 7w CAl.0 the indicator IS NOT CONFIGURED (see procedure) CAl.f Note: First block of 4 configuration code E,F,G,H Sercond block of configuration code I,L,M 6021 6021 3400 0 1 2 3 4 Note: 1 The code of a non configured instrument, is 9999 - 999.* 2 For input in mA and Volts the beginning and end of scale values Excitation voltage for transducer (JT models) None (JM models) 5 Vdc ± 5% 30 mA max 10 Vdc ± 5% 30 mA max can be configured in engineering units between -999 and 9999. The values can be expressed in units (xxxx), in tenths (xxx,x), hundredths (xx,xx) or thousandths (x,xxx). M 0 1 2 0250 0260 In.sh s.C.b.r s.C.pa Note* As the following formula: Parity index serial communication X VIS%=10 • XIN% 0 0…4 (see note 3) XIN% = percentage input value XVIS%= percentage display value 10 = linearization constant Alarm configuration index Y2 0…7 7w Alarm configuration index Y4 0…7 7w Baude Rate 9600 * 4800 2400 1200 600 * Only for B = 2 Zero calibration within ±10% of the measurement range 0 1 2 3 4 Parity Protoc. None 0 Ascon 1 Ascon Odd 2 Ascon Even None* 3 Modbus None* 4 Jbus * Only for B = 2 End of scale calibration at 80%of the measurement span Only for models with retransmission of measurement Y5 y5Io Value of measurement corresponding to 0% of the retransmitted signal Y5 Value of measurement corresponding to 100% of the retransmitted signal Y5 Note 2 Alarm configuration index Y3 0…7 7w y5hi Only for models with alarms Delay at alarm action 0…100 sec t.deI Hysteresis of alarm Y1 0.1...10.0% scale span Hy. I Hysteresis of alarm Y2 0.1...10.0% scale span Hy. 2 0 0::50 0::50 2 alarm option Hysteresis of alarm Y3 0.1...10.0% scale span Hy. 3 Hysteresis of alarm Y4 0.1...10.0% scale span Hy. 4 0::50 0::50 4 alarm option End of parameter sequence FACTORY SET VALUES (DEFAULT) INDEX OF ACCESS TO SET POINT Ac.sp . Example: to change 250 to 260 Press to select the required digit. Each successive press of this button moves the flasfing digit one place to the left. 0 2 5 0 Press to increment the selected digit to the desired value. (the first digit to the left between 9 and 0 displays the sign -) 0 s.C.Ad Baud rate serial communication 1 0…4 (see note 2) MODIFICATION OF A VALUE L d.d. Address of serial communication 0 0…63 It is possible to modify any numeric field by changing each digit in turn. The modified digit flashes. When it is displayed the mnemonic code of the value to be modified appears Press the key to display the value and then modify it 0250 t.Hld Only for models with serial communication Only for JT models for transducers Input: 0…60 mV or 0…300 mV 9999 t.fil (see manual supplied separately) Note 3 if at power-up appears Ac.s.p Hold Hold function index (see below) 0 2...0...+2 Resolution index of indication (see below) 0 0…6 End of configuration sequence * Fe-Const Din 43710 Type and operating mode, Alarm Y3 Beginning of scale value from beginning of scale to end of scale 0 CONFIGURATION CODE RTD IEC 751 sc.Io Only for models with alarms The index 5 is the one normally used when the contact is employed for a control action. In case mains cutoff the relay is deenergized and its contact is therefore opened. Input type, scale range (2) Number of decimal digits 0…3 0 Co.y2 Time constant of the input filter 1 0…30 sec Input shift 0 -50…+50 digit sc.d.d Co.y1 Index of access to Set point menu (see below) 2 0...2 Storing time of measurement 0 0,5…999,9 sec entering the 3 indexes I, L, M, the second block of the configuration code sq.rt. The index 7 is set in factory (default) and it is the one normally used for an alarm contact. ! entering the 4 indexes E, F, G, H, the first block of the configuration code Only for configurable scales 4 5 6 7 OFF closes NON-alarm ALARM opens closes NON-alarm Disabled OFF opens NON-alarm ALARM 0 1 2 3 OFF opens NON-alarm Con.2 Led closes NON-alarm ALARM Index Co.yn closes NON-alarm Enabled opens pAss Entering password of access to parameters (see cap. 6 page 16) 9 Press to accept the entered value. For time-out parameters the value is automatically accepted after 10 seconds about. Visible and modification Index Visible but NO MODIFICATION Index NOT VISIBLE and NO MODIFICATION Index 2 1 0 RESOLUTION INDEX OF INDICATION d.d. Index O 1 2 3 4 5 6 Resolution 1 2 5 10 20 50 100 HOLD FUNCTION INDEX (see leaflet) Disabled The value of measurement is stored for a time preset t.HId With the external contact on the logic input IL1 the value of measurement is stored for the entire closing time of the contact Peak Valley Peak Valley 0 1 -1 2 -2 8 • OPERATIVE INSTRUCTIONS • JM and JT SERIES INDICATORS KEYS AND DISPLAY HOLD FUNCTION DISPLAY normal operation during programming Measurement Mnemonic codes and data values KEYS Select menu To modify data values Access and Enter 278.5 of parameters and configuration Increment digit Select digit Function Activating mode Startup from external contact (see fig. 1) IL2 21 MEASUREMENT FREEZING 23 Duration Note For all the closing time of C2 This function prevents further acquisitions of measurement and freezes also all the other functions of the instrument C2 of parameters and configuration Closing permanently C2 Hold function activated Automatic startup (see fig.2) Alarm leds Setting up during programming: • Hold function index, 1 for max peak, -1 for min peak • Hold time t from 0.5…999.9 sec. LEDS SET POINT ALARMS MENU It is displayed only for models with alarms It is possible to protect the Set points from inadvertent tampering setting up the index of access Ac.sp MEASUREMENT "PEAK" from 0..2 (see leaflet) t.Hld set in advance Startup from external contact (see fig. 3) Setting up during programming: • Hold function index, 2 for peak, -2 for valley OR Index 2 Set points visible and modification Index 1 Set points visible but NO modification Index 0 Set points not visible and therefore NO modification For Hold time "VALLEY" CAPTURE AND STORAGE The Set point menu is entered pressing successively the key IL1 21 From normal operation For all the closing time of C1 This function does not inhibit the acquisition of measurement and therefore alarms and retransmission remain operative 22 C1 Closing permanently C1 s.p. 1 Set point Alarm 1 (only if activated) s.p. 2 Set point Alarm 2 (only if activated) Fig. 1 Hold function activated from the closing of an external contact to display an instantaneous desired value, for example weightings with weighting cells Freezing of last measurement Further acquisitions of measurements not allowed 2 Alarm option s.p. 3 Set point Alarm 3 (only if activated) s.p. 4 Set point Alarm 4 (only if activated) ON Closing of the external contact on the logic input LI2 OFF Fig. 2 Hold function automatically to display for example maximum peaks of rapid phenomena t Hld t Hld 4 Alarm option Storing peaks for a time tHld MODIFYING SET POINT It is possible to modify any Set point value by changing each digit in turn. The modified digit flashes. When it is displayed the mnemonic code of the value to be modified appears Press the key to display the value and then modify it 0250 0250 0260 Fig. 3 Hold function activated from the closing of an external contact to display, for example, maximum peaks for a long period Example: to change 250 to 260 Storing peaks Press to select the required digit. Each successive press of this button moves the flasfing digit one place to the left. 0 2 5 0 Press to increment the selected digit to the desired value. (the first digit to the left between 9 and 0 displays the sign -) 0 External contact closing on the logic output LI1 ON OFF 9 Press to accept the entered value. For time-out parameters the value is automatically accepted after 10 seconds about. ASCON spa Ospiate di Bollate (Milano), Italy MIU. JM/JT - 2/94/11/E