LFS mA Manual - Calcert Instruments
Contents
1. The graphic symbol O 0 0 means 100 Push FUNC pushbutton again The display will return in Normal Display Mode NOTE The two power outputs are displayed only if therelative function has been previously configured When no pushbutton is pressed during the time out see P36 the display will automatically return in Normal Display Mode In order to keep the desired information continuously on the lower display depress A or V push button to remove the timeout 1 When return in Normal Display Mode is desired push FUNC push button again INDICATORS ut Lit when the process variable is shown in Celsius degrees F Lit when the process variable is shown in Fahrenheit degrees SMRT Flashing when the first part of the SMART algorithm is active Lit when the second part of the SMART algorithm is active OUT1 It will flash with a duty cycle proportional to the linear output value OUT2 Lit when OUT 2 is ON or alarm 1 is in the alarm state OUT3 Lit when OUT 3 is ON or alarm 2 is in the alarm state Other functions are shown by decimal points o REM B BM AG ELSE SP2 MAN REM Flashing when the instrument is controlled via serial link SP2 Flashing at slow rate when SP2 is used Flashing at fast rate when a set point from serial link is used MAN Flashing at slow rate when the instrument is in MANUAL mode Pushbutton functionality during operating mode FUNC when the instrument2. P29 Displayable protected parameters This parameter is skipped when P17 0 OFF Protected parameters cannot be displayed On Protected parameter can be displayed P30 SMART function This parameter is skipped when none of the outputs is programmed as control output 0 SMART function disabled 1 SMART function is NOT protected by safety lock 2 SMART function is under safety lock protection P31 Maximum value of the proportional band calculated by the SMART algorithm This parameter is skipped when none of the outputs is programmed as control output or P30 0 This parameter is programmable from P32 value to 200 0 P32 Minimum value of the proportional band calculated by the SMART algorithm This parameter is skipped when none ofthe outputs is programmed as control output or P30 0 It is programmable from 1 0 to P31 value P33 Minimum value of the integral time calculated by the SMART algorithm This parameter is skipped when none of the outputs is programmed as control output or P3020 It is programmable from 00 01 mm ss to 02 00 mm ss P34 MANUAL function This parameter is skipped when none of the outputs is programmed as control output OFF manual function is disabled On manual function can be enabled disabled by MAN pushbutton P35 Device status at instrument start up This parameter is skipped when none of the outputs is programmed as control output or P34 OFF 0
3. 9 When the NEUTRAL line is present connect it to terminal 4 PRELIMINARY HARDWARE SETTINGS 1 Remove the instrument from its case 2 It is necessary to set J106 according to the desired input type as shown in the following figure OPEN INPUT CIRCUIT This instrument is able to identify the open circuit for TC and RTD inputs The open input circuit condition for RTD input is shown by an overrange indication For TC input it is possible to select overrange indication standard or underrange indication set INPUT J106 ting the CH101 and SH101 according to the follow TYPE 1 2 3 4 5 6 7 8 9 10 ing table TC RTD open close open open open Overrange STD CH101 close SH101 open P P P P Underrange CH101 open SH101 close 60 mV open close open open open 5V close open close open open Both pads are located on the soldering side of the 10 V open open close open open CPU card 20 mA open open open close close NOTE the not used jumper can be positioned on pin 7 9 2 4 E E V101 J106 EHEM E Le 1357299 Fig 13 GENES Prae ela Ere amas B mme eee HN Ai Fig 14 GENERAL NOTES for configuration FUNC This will memorize the new value of the selected parameter and go to the next parameter increasing order MAN This will scroll
4. the instrument starts in AUTO mode 1 the instrument starts in MANUAL mode with power output set to 0 6 2 the instrument starts in the same way it was left prior to power shut down but if the instrument was in manual mode it will restart with a power output equal to 0 3 the instrument starts in the same way it was left prior to power shut down but if the instrument was in manual mode it will restart with the same power output it had prior to power shut down P36 z Timeout selection This parameter allows to set the time duration of the timeout for parameter setting used by the instrument during the operating mode tn 10 2 10 seconds tn 30 30 seconds P37 Conditions for output safety value This parameter is skipped when none of the outputs is programmed as control output 0 No safety value see Error Messages 1 Safety value is applied when overrange or underrange condition is detected 2 Safety value is applied when overrange condition is detected 3 Safety value is applied when underrange condition is detected P38 z Output safety value This parameter is skipped when none of the outputs is programmed as control output or P37 0 This value can be set from 0 0 to 100 0 when the device is configured with one control output only from 100 0 to 100 0 when the device is configured with two control outputs NOTE when the instrument detects an out of range condition it assig
5. P25 alarm 1 stand by mask function Available only when P9 AL1 P AL1 d or AL1 b OFF stand by mask function disabled On stand by mask function enabled NOTE If the alarm is programmed as band or deviation alarm this function masks the alarm condition after a set point change or at the instrument start up until the process variable reaches the alarm threshold plus or minus hysteresis If the alarm is programmed as a process alarm this function masks the alarm condition at instrument start up until the process variable reaches the alarm threshold plus or minus hysteresis P26 Alarm 2 action Available only when P11 AL2 P AL2 d or AL2 b dir direct action relay energized in alarm condition rEV reverse action relay de energized in alarm condition P27 Alarm 2 stand by mask function Available only when P11 AL2 P AL2 d or AL2 b OFF Stand by mask function disabled On Stand by mask function enabled 15 NOTE for more details to stand by mask function see P25 parameter P28 OFFSET adjustment added to the measured value This parameter allows to set a constant OFFSET throughout the readout range It is skipped for linear inputs For readout ranges with decimal figure P28 is programmable from 19 9 to 19 9 For readout ranges without decimal figure P28 is programmable from 199 to 199 Readout Real curve 7 P28 Adjusted curve Input p
6. Above this value the display shows InF meaning that the transfer will be done as a step change Ramp applied to a decreasing set point changes For other details see Grd1 parameter Output high limit Range From 0 0 to 100 0 of the output span when device is configured with one control output From 100 0 to 100 0 of the output span when device is configured with two control outputs Time duration of the output power limiter soft start Range from 1 to 540 min Above this value the display shows InF meaning that the limiting action is always on Note The tOL can be modified but the new value will become operative only at the next instrument start up Control output max rate of rise This parameter is available only when Pb is different from zero or one control output is a linear output type Range From 0 1 to 25 0 of the output span second Above this value the display shows InF meaning that no limit is imposed Note the rnP parameter is active ona linear control output even if the device is in ON OFF control mode ERROR MESSAGES OVERRANGE UNDERRANGE AND SENSOR LEADS BREAK INDICATIONS The device is capable to detect a fault on the process variable OVERRANGE or UNDERRANGE or SENSOR LEADS BREAK When the process variable exceeds the span limits established by configuration parameter P 1 an OVERRANGE condition will be shown on display as show in the following figure OOOO An UNDERR
7. Burnout up scale NOTE a special test is provided to signal OVERRANGE when input resistance is less than 15 Q STANDARD RANGES TABLE Input type Ranges 10 199 9 400 0 C RTD Pt100Q 11 200 800 C DIN 43760 27 199 9 400 0 F 28 330 1470 F C LINEAR INPUTS Read out keyboard programmable between 1999 and 4000 Decimal point programmable in any position Burn out the instrument shows the burn out condi tion as an underrange condition for 4 20 mA 1 5 V and 2 10 V input types It shows the burn out condition as an underrange or an overrange condition selectable by soldering jumper for 0 60 mV and 12 60 mV input types No indication are available for 0 20 mA 0 5 V and 0 10 V input types Input type impedance Accuracy 12 0 60 mV 13 12 60mv MA 14 0 20mA a 15 4 20mA 59 0 2 1 digit 2 0 200ko 25 C BB V ana D LOGIC INPUT The instrument is eguipped with one input from contact voltage free for setpoint selection Contact open Main setpoint Contact closed Auxiliary setpoint NOTES 1 Use an external contact with a contact rating better than 0 5 mA 5 V DC 2 The instrument needs 100 ms to recognize a contact status variation 3 The logic inputs are NOT isolated by the measuring input SET POINTS This instrument allows to use 2 set points SP and SP2 The set point selectio
8. as Alarm 2 output and the alarm 2is programmed as band alarm AL2 d it is used as Alarm 2 output and the alarm 2 is programmed as deviation alarm NOTES 1 If P11 has been changed to rEv the cycle time Cy3 will be forced to 15 Seconds If P11 has been changed to dir the cycle time Cy3 will be forced to 10 s when P22 is equal to Alr 4 s when P22 is equal to OIL 2 s when P22 is equal to H20 2 The relations among P5 P9 and P11 are shown by the following notes one Out only can be configured as rEv output one Out only can be configured as dir output if no Output is configured as control output the instrument will operate as an indicator P12 Alarm 2 operating mode Available only when P11 is equal to AL2 P AL2 b or AL2 d H A High alarm outside for band alarm with automatic reset latched L A Low alarm inside for band alarm with automatic reset latched H L High alarm outside band with manual reset latched L L low alarm inside band with manual reset latched P13 Programmability of the alarm 2 threshold and hysteresis values Available only when P11 is equal to AL2 P AL2 b or AL2 d OPrt Alarm 2 threshold and hysteresis are programmable in the operating mode COnF Alarm 2 threshold and hysteresis are programmable in configuration mode P14 Alarm 2 threshold value Available only when P11 is equal to AL2 P AL2 b or AL2 d and P13 is equ
9. instrument in the panel cutout 3 pushing the instrument against the panel insert the mounting bracket 4 with a screwdriver turn the screws with a torque between 0 3 and 0 4 Nm 1 bracket TB Panel Romecreonic Gasket Fig 1 OUTLINE AND CUT OUT DIMENSIONS 1 Fig 2 OUTLINE AND CUT OUT DIMENSIONS 2 CONNECTION DIAGRAMS Connections are to be made with the instrument housing installed in its proper location NEM 3 8 4 11 E u 5 mu 7T 12 8 13 3 m 9 35 14 i4 z 10 7 145 J AIA c B B RS 485 sP sP2 NO OUT2 NO OUT3 OUT2 3 PWR LINE 400 240Vac EN Fig 3 A REAR TERMINAL BLOCK A MEASURING INPUTS NOTE Any external components like zener barriers etc connected between sensor and input terminals may cause errors in measurement due to excessive and or not balanced line resistance or possible leakage currents TC INPUT 10 10 9 Shield Fig 4 NOTE Don t run input wires together with power cables For TC wiring use proper compensating cable preferable shielded when a shielded cable is used it should be con
10. is in normal display mode 1 with a brief pressure lt 3s it starts the parameter modification procedure 2 with a pressure within 3s to 10s it changes the indication on the lower display see display function 3 with a pressure longer than 10s it enables the lamp test see Lamp Test paragraph LJ During parameter modification it allows to memorize the new value of the selected parameter and go to the next parameter increasing order pressed for more than 1 s it allows to enable or disable the manual function and during parameter modification to scroll back the parameters without memorizing the new setting A During parameter modification it allows to increase the value of the selected parameter Qi During MANUAL mode it allows to increase the output value wy During parameter modification it allows to decrease the value of the selected parameter Qi During MANUAL mode it allows to decrease the output value A MAN During parameter modification they allow to jump to the maximum programmable value W MAN During parameter modification they allow to jump to the minimum programmable value MAN NOTE a 10 or 30 seconds time out see P 36 can be selected for parameter modification during run time mode If during operative parameter modification no pushbutton is pressed for more than 10 30 seconds the instrument goes automatically to the normal display mode and the eventual modi
11. minutes 1 00 1 minute 30 0 for one control output 0 0 for two control outputs 15 seconds If two control outputs are configured and OUT2 OUT 3 is configured as dir the default value will be equal to 10 seconds when P22 Alr 4 seconds when P22 OIL 2 seconds when P22 H20 1 00 for P22 Alr 0 80 for P22 OIL 0 40 for P22 H2O 0 Initial scale value Full scale value Infinite step transfer Infinite step transfer 100 Infinite 25 0 96 s DEFAULT CONFIGURATION PARAM ETERS The configuration parameters can be loaded with predetermined default values These data are the typical values loaded in the instrument prior to shipment from factory To load the default values proceed as follows a The internal switch V101 see fig 13 should be open b The upper display will show COnF c Push the W pushbutton the display will show the firmware version COnF A 00 d Maintaining the pressure on the W pushbutton push the A pushbutton also The instrument will show OFF dFLt e Press A pushbutton to select between table 1 European or table 2 American default set of parameters the display will show t b 1 dFLt f Press FUNC pushbutton the display will show LOAd This means that the loading procedure has been initiated After about 3 seconds the loading procedure is terminated and the instrument reverts to visualization a
12. of the output span if device is configured for two control outputs Output 2 cycle time rH This parameter is available only if P9 is egual to rEv or dir Range From 1 to 200 s OLAP Output 3 cycle time This parameter is available only if P11 is egual to rEv or dir Range From 1 to 200 s Relative Cooling gain This parameter is available only when device is configured with two control outputs and Pb is different from zero or device is in manual mode Range from 0 20 to 1 00 Note When the device is working with SMART algorithm and P23 is set to On the RCG value is limited in accordance with the selected type of cooling media from 0 85 to 1 00 when P22 Alr from 0 80 to 0 90 when P22 OIL from 0 30 to 0 60 when P22 H20 Dead band Overlap between H C outputs This parameter is available only when device id configured with two control outputs and Pb is different from zero or device is in manual mode Range from 20 to 50 of the proportional band A negative OLAP value shows a dead band while a positive value shows an overlap Set point low limit Range from initial scale value P3 to rH Note When P3 has been modified rL will be realigned to it Set point high limit Range from rL to full scale value P4 Note When P4 has been modified rH will be realigned to it Grd1 Grd2 OLH tOL rnP Ramp applied to an increasing set point change Range from 1 to 100 digits per minute
13. rt It is programmable from 1999 to 4000 The decimal point will be positioned as selected with P2 parameter P9 Output 2 function nonE output not used rEv Out 2 is used as control output with reverse action dir Out 2 is used as control output with direct action AL1 P it is used as Alarm 1 output and the alarm 1 is programmed as process alarm AL1 b it is used as Alarm 1 output and the alarm 1 is programmed as band alarm AL1 d it is used as Alarm 1 output and the alarm1 is programmed as deviation alarm NOTE If P9 has been changed to rEv the cycle time Cy2 will be forced to 15 seconds If P9 has been changed to dir the cycle time Cy2 will be forced to 10 s when P22 is equal to Alr 4 s when P22 is equal to OIL 2 s when P22 is equal to H2O P10 Alarm 1 operating mode Available only when P9 is equal to AL1 P AL1 b or AL1 d H A High alarm outside for band alarm with automatic reset latched 12 L A Low alarm inside for band alarm with automatic reset latched H L High alarm outside band with manual re set latched Low alarm inside band with manual reset latched LiL P11 Output 3 function nonE output not used rEv Out 3is used as control output with reverse action dir Out 3 is used as control output with direct action AL2 P it is used as Alarm 2 output and the alarm 2 is programmed as process alarm AL2 b it is used
14. 3 linear mA relay relay Heating AL1 AL2 Heating Cooling AL2 Heating AL1 Cooling Cooling AL1 AL2 Cooling Heating AL2 Cooling AL1 Heating Retransm Heating AL2 Retransm AL1 Heating Retransm Cooling AL2 Retransm AL1 Cooling Retransm Heating Cooling Retransm Cooling Heating Retransm AL1 AL2 Control output updating time 250 ms when a linear input is selected 500 ms when a TC or RTD input is selected Action direct reverse programmable by front keyboard Output level indication The instrument displays separately the output 1 level heating and the output 2 level cooling Output status indication the OUT 1 LED will flash with a duty cycle proportional to the output 1 power Two indicators OUT 2 and or OUT 3 are lit when the respective output is in ON condition Output level limiter For one control medium from 0 to 100 For two control mediums from 100 to 100 96 This function may be operative at instrument start up for a programmable time To avoid thermal shock and or preheating the plant otherwise it can be enabled by an external contact OUTPUT 1 Type optoisolated 0 20 mA or 4 20 mA programmable Function programmable as control output heating or cooling retransm of the measured value retransm of the operative set point Scaling programmable from 1999 to 9999 Maximum load 500 O Resolution 0 1 when used as control output 0 05 when us
15. 6 used in series with the internal contacts as shown in Fig 9 OUT 1 20 mA aan E R POWER LINE Fig 10 mA OUTPUT WIRING LOAD It is an isolated analog output Fig 9 EXTERNAL SWITCH IN SERIES WITH Maximum load 500 Q THE INTERNAL CONTACT In this case it is recommended to install an additional RC network across the external contact as show in Fig 9 The value of capacitor C and resistor R are shown in the following table LOAD C R P OPERATING mA WF Q W VOLTAGE 150 mA 0 1 22 260 V AC 40 mA 0 047 100 1 2 260 V AC 2 lt 0 5 A 0 33 47 2 260 V AC The cable involved in relay output wiring must be as far away as possible from input or communica tion cables 5 SERIAL INTERFACE RS 485 interface allows to connect up to 30 devices with one remote master unit N A A A A s 1 M T A R B B B B S U 12 T M E E COMMON R N 18 T s Fig 11 RS 485 WIRING The cable length must not exceed 1 5 km at 9600 BAUD NOTE The following report describes the signa sense of the voltage appearing across the interconnection cable as defined by EIA for RS 485 a The A terminal of the generator shal be negative with respect to the B terminal for a binary 1 MARK or OFF state b The A termin
16. ANGE condition will be shown on display as show in the following figure _OOO When P37 is equal to 0 the following conditions may occur The instrument is set for one output only and if an OVERRANGE is detected the output turns OFF if reverse action or ON if direct action The instrument is set for heating cooling action and an OVERRANGE is detected rEV output turns OFF and dir output turns ON The instrument is set for one output only and if an UNDERRANGE is detected the output turns ON if reverse action or OFF if direct action The instrument is set for heating cooling action and an UNDERRANGE is detected rEV output turns ON and dir output turns OFF When P37 is different from zero and an out of range condition is detected the instrument operates in accordance with P37 and P38 parameters NOTE in every cases the P18 and P20 parameters will conditioned the real outputs of the instrument The sensor leads break can be signalled as for TC mV input OVERRANGE or UNDERRANGE selected by a solder jumper for RTD input OVERRANGE for mA V input UNDERRANGE NOTE For mA V input the leads break can be detected only when the range selected has a zero elevation 4 20 mA or 1 5 V or 2 10 V For RTD input a special test is provided to signal OVERRANGE when input resistance is less than 15 ohm Short circuit sensor detection ERROR MESSAGES The instrument performs
17. CE eeozlecteon e 170 1U0 LFS MAO 1 10 98 B ROELECTROMNC J USER MANUAL LFS mA INDEX MOUNTING REQUIREMENTS OUTLINE AND CUT OUT DIMENSIONS CONNECTION DIAGRAMS PRELIMINARY HARDWARE SETTINGS CONFIGURATION PROCEDURE 10 OPERATIVE MODE Display function ele eo WT M Pushbutton function during operating mode 19 Enable disable the control output 19 SP SP2 selection 19 Direct access to the set point Manual function Lamp test Serial link SMART function OPERATIVE PARAMETERS ERROR MESSAGES GENERAL INFORMATIONS g MAINTENANCE 22 31 DEFAULT PARAMETERS eee A 1 MOUNTING REQUIREMENTS Select a mounting location where there is minimum vibration and the ambient temperature range between 0 and 50 C The instrument can be mounted on a panel up to 15 mm thick with a square cutout of 45 x 45 mm For outline and cutout dimensions refer to Fig 2 The surface texture of the panel must be better than 6 3 um The instrument is shipped with rubber panel gasket 50 to 60 Sh To assure the IP65 and NEMA 4 protection insert Screw the panel gasket between the instrument and the panel as shown in fig 1 While holding the instrument against the panel proceed as follows 1 insert the gasket in the instrument case 2 insert the
18. TCtype 4 TC type 5 TC type 6 TC Type 7 TCtype 8 TCtype 9 TCtype 10 RTD type 11 RTD type 12 mV 13 2 mV 14 2 mA 15 2 mA 16 V 17 V 18 V 19 V Linear 20 TC type L put type and standard range range 0 range 0 range 100 0 range 100 range 100 0 range 100 range 199 9 range 100 range 0 range 0 range 199 9 range 200 range 0 range 12 range 0 range 4 range 0 range 1 range 0 range 2 range 0 21 TCtype J range 150 1830 F 22 TCtype K range 150 2500 F 23 TCtype T range 330 750 F 24 TC type N range 150 2550 F 25 TCtype R range 0 3200 F 26 TCtype S range 0 3200 F 27 RTD type Pt 100 range 199 9 400 0 F 28 RTD type Pt 100 range 330 1470 F NOTE selecting P1 0 2 4 6 10 or 27 the instrument set automatically P39 P40 FLtr For all the remaining ranges it will set P39 P40 nOFL If a different selection is desired P39 and P40 may be modified after executed P1 configuration P2 Decimal point position This parameter is available only when a linear input is selected P1 12 13 14 15 16 17 18 or 19 7777 No decimal figure 777 7 One decimal figure 77 77 Two decimal figures 7 777 Three decimal figures P3 z Initial scale value For linear inputs it is programmable from 1999 to 4000 For TC and RTD input it is programmable within the input range When this parameter is modified rL parameter will be re a
19. al of the generator shal be positive with respect to the B terminal for a binary 0 SPACE or ON state D POWER LINE WIRING N 4 POWER LINE 100 V to 240 V A C 50 60Hz or 24 V AC DC 5 R S T R S T N Fig 12 POWER LINE WIRING NOTES 1 Before connecting the instrument to the power line make sure that line voltage corresponds to the description on the identification label 2 To avoid electrical shock connect power line at the end of the wiring procedure 3 For supply connections use No 16 AWG or larger wires rated for at last 75 C 4 Use copper conductors only 5 Don trun input wires together with power cables 6 For24 V DC the polarity is ado notcare condition 7 The power supply input is NOT fuse protected Please provide it externally Power supply Type Current Voltage 24 V AC DC T 500 mA 250 V 100 240 V AC T 125 mA 250 V When fuse is damaged it is advisable to verify the power supply circuit so that it is necessary to send back the instrument to your supplier 8 The safety requirements for Permanently Con nected Equipment say a switch or circuit breaker shall be included in the building installation It shall be in close proximity to the equipment and within easy reach of the operator it shall be marked as the disconnecting device for the equipment NOTE a single switch or circuit breaker can drive more than one instrument
20. al to COnF Range For process alarm within the range limits For band alarm from 0 to 500 units For deviation alarm from 500 to 500 units P15 Alarm 2 hysteresis value Available only when P11 is equal to AL2 P AL2 b or AL2 d and P13 is equal to COnF Range from 0 196 to 10 0 of the range selected with P3 and P4 parameters or 1 LSD 13 P16 Threshold of the Soft Start function Threshold value in eng units to initiate the Soft start function output power limiting at start up Range within the readout span NOTE This threshold value will not be taken into account when tOL InF P17 Safety lock 0 No parameter protection The device is always in unlock condition and all parameters can be modified 1 The device is always in lock condition and no one of the parameters exception made for set points SP SP2 and manual reset of the alarms can be modified for SMART status see P30 parameter From 2 to 4999 This combination number is a secret value to be used in run time see nnn parameter to put the device in lock unlock condition For SP SP2 and manual reset of the alarms the lock unlock condition has no effect for SMART status see P30 From 5000 to 9999 This combination number is a secret value to be used in run time see nnn parameter to put the device in lock unlock condition For SP SP2 manual reset of the alarm AL1 AL2 the lock unlock condition has no
21. am SP Snrt n rSt SP2 nnn DESCRIPTION Set point in eng units Range from rL to rH SP is operative when the logic input is open SMART status The On or OFF indication shows the actual status of the SMART function enabled or disabled respectively Set On to enable the SMART function Set OFF to disable the SMART function Manual reset of the alarms This parameter is skipped if none of the alarms has the manual reset function SetOnandpush FUNC to resetthe alarms Set point 2 in eng units Range from rL to rH SP2 is operative when the logic input is closed Software key for parameter protection This parameter is skipped if P17 0 or 1 On the instrument is in LOCK condition OFF the instrument is in UNLOCK condition 22 AL HSA1 AL2 HSA2 Pb When it is desired to switch from LOCK to UNLOCK condition set a value equal to P17 parameter When it is desired to switch from UNLOCK to LOCK condition set a value different from P17 parameter Alarm 1 threshold This parameter is available only if P 9 is equal to AL1 P AL1 b or AL1 d Ranges Span limits for process alarm From 0 to 500 units for band alarm From 500 to 500 units for deviation alarm Alarm 1 hysteresis This parameter is available only if P 9 is equal to AL1 P AL1 b or AL1 d Range From 0 1 to 10 0 of the input span or 1 LSD Note If the hysteresis of a band alarm is larger than the alarm ba
22. ation panel mounting Rear terminal block 15 screw terminals screw M3 for cables from 6 0 25 to 2 5 mm or from AWG 22 to AWG 14 with connection diagrams and safety rear cover Dimensions DIN 43700 48 x 48 mm depth 122 mm Weight 250 g Power supply 100V to 240V AC 50 60Hz 15 to 10 of the nominal value 24 V AC DC 10 of the nominal value Power consumption 6 VA max Insulation resistance gt 100 MQ according to IEC 1010 1 Dielectric strength 1500 V rms according to IEC 1010 1 Display updating time 500 ms Sampling time 250 ms for linear inputs 500 ms for TC and RTD inputs Resolution 30000 counts Accuracy 0 2 f s v 1 digit O 25 C ambient temperature Common mode rejection 120 dB 9 50 60 Hz Normal mode rejection 60 dB 50 60 Hz Electromagnetic compatibility and safety requirements This instrument is marked CE Therefore it is conforming to council directives 89 336 EEC reference harmonized standard 27 EN 50081 2 and EN 50082 2 and to council directives 73 23 EEC and 93 68 EEC reference harmonized standard EN 61010 1 Installation category II Temperature drift CJ excluded lt 200 ppm C of span for mV and TC ranges 1 3 5 7 20 21 22 24 300 ppm C of span for mA V lt 400 ppm C of span for RTD range 11 28 and TC range O 2 4 6 23 500 ppm C of span for RTD range 10 and TC ranges 8 9 25 26 lt 800 ppm C of span for RTD range 27 O
23. back the parameters without memorization of the new value A This will increase the value of the selected parameter v This will decrease the value of the selected parameter CONFIGURATION PROCEDURE 1 Remove the instrument from its case 2 Set the dip switch V101to the open conditio see fig 13 3 Re insert the instrument 4 Switch on the instrument The display will show COnF n NOTE If CAL indication is displayed press immediately the A pushbutton and return to the configuration procedure 5 Push the FUNC pushbutton SEr1 Serial interface protocol OFF No serial interface Ero Polling selecting ERO nbUS Modbus jbUS Jbus SEr2 Serial link device address Not available when SEr1 OFF From 1 to 95 for ERO protocol From 1 to 255 for all the other protocols NOTE the electrical characteristic of the RS 485 serial interface allows you the connection of 31 devices maximum 10 SEr3 Baude rate for serial link Not available when SEr1 OFF From 600 to 19200 baud NOTE 19200 baud is shown on display as 19 2 SEr4 Byte format for serial link Not available when SEr1 OFF 7E 7 bits even parity For ERO protocol only 70 7 bits odd parity For ERO protocol only 8E 8 bits even parity 80 8 bits odd parity NADZAAACCEeH Pt 100 Pt 100 Linear Linear Linear Linear Linear Linear Linear 8 8 bits no parity P1 In 0 TCtype 1 TCtype 2 TC type 3
24. ed as analog retransmission Digital filter it is possible to enable a digital filter on the output retransmission with the same time constant chosen for the read out Output level indication as control output only from 00 0 to 100 0 96 Output status indication the indicator OUT 1 flashes with a duty cycle proportional to the output level OUTPUT 2 Type relay SPST contact NO or NC selectable by jumper Contact rated 2 A at 250 V AC on resistive load Function programmable as control output heating or cooling Alarm 1 output Output cycle time when used as control output programmable from 1 s to 99 s 30 OUTPUT 3 Type relay with SPST contact with rated current 2 A at 250 V AC on resistive load Function programmable as control output heating or cooling Alarm 2 output Output cycle time when used as control output programmable from 1 s to 200 s ALARMS Actions Direct or reverse acting Alarm functions each alarm can be configured as process alarm band alarm or deviation alarm Alarm reset automatic or manual reset programmable on each alarm Stand by mask alarm each alarm can be configured with or without stand by mask function This function allows to delete false indication at instrument start up and or after a set point change Process alarm Operative mode High or low programmable Threshold programmable in engineering unit within the input span Hysteresi
25. effect for SMART status see P30 NOTE when safety lock is selected the secret value can not be displayed again and the display will show 0 1 SFt A when P17 is encompassed between 2 and 4999 or SFt b when P17 is encompassed between 5000 and 9999 The configuration procedure is completed and the instrument shows 7 7 7 7 on both displays If no other setting is necessary push the FUNC pushbutton the display returns to show COnF Otherwise access to the advanced configuration parameter proceeding as follows 1 using A and W pushbuttons to set the 262 code on the display 2 push the FUNC pushbutton P18 Main control output action This parameter is skipped if none of the outputs is configured as control output nOrL the power output is equal to the result of PID calculation CnPL the power output is complemented 100 PID calculation P19 Displayed value of the main power output This parameter is skipped if none of the outputs is configured as control output nOrL the displayed value is equal to the result of PID calculation CnPL the displayed value is complemented 100 PID calculation P20 z Secondary control output action This parameter is available only when two control outputs are configured nOrL the power output is equal to the result of PID calculation CnPL the power output is complemented 100 PID calculation 4 P21 Displayed value of the power output fo
26. fication of the last parameter will be lost ENABLE DISABLE THE CONTROL OUTPUT When the instrument is in normal display mode by keeping depressed for more than 5 s A and FUNC pushbuttons it is possible to disable the control outputs In this open loop mode the device will function as an indicator the lower display will show the word OFF and all control outputs will also be in the OFF state the output is also conditioned by P18 and P20 parameters When the control outputs are disabled the alarms are also in non alarm condition The alarms output conditions depend on the alarm action type see P24 P26 Depress for more than 5 s and FUNC pushbuttons to restore the control status The alarm stand by function if configured will be activated as if it was at power up If a power down occures when the control output is disabled at instrument power up the control output will be automatically disabled SP SP2 SELECTION It is possible to select the operating set point SP or SP2 only by an external contact terminals 14 and 15 By setting P43 it is possible to display the final or the operative set point during a ramp execution DIRECT ACCESS TO SET POINT When the device is in AUTO mode and in Normal Display Mode it is possible to access directly to set point modification SP or SP2 Pushing A or V for more than 2 s the set point will begin changing The new set point value becomes operative since no pushbutto
27. ligned to it P4 Full scale value For linear inputs it is programmable from 1999 to 4000 For TC and RTD input it is programmable within 11 the input range When this parameter is modified rH parameter will be re aligned to it The initial and full scale values determine the input span which is used by the PID algorithm the SMART and the alarm functions NOTE the minimum input span S P4 P3 in absolute value should be set as follows For linear inputs S gt 100 units For TC input with C readout S gt 300 C For TC input with F readout S gt 550 F For RTD input with C readout S gt 100 C For RTD input with F readout S gt 200 F P5 Output 1 function rEv Out 1 is used as control output with reverse action dir Out 1 is used as control output with direct action Pv rt Out 1 is used as analog retransmission of the measured value process variable SP rt Out 1 is used as analog retransmission of the operative set point REVERSE ACTION DIRECT ACTION Input Input E t t Output Output P6 Output 1 type 0 20 output type 0 20 mA 4 20 output type 4 20 mA P7 analog retransmission initial scale value Available only when P5 Pv rt or SP rt It is programmable from 1999 to 4000 The decimal point will be positioned as selected with P2 parameter P8 analog retransmission full scale value Available only when P5 Pv rt or SP
28. n a d Rijn Tel 0172 420400 Fax 0172 420395 sales eroelectronic nl SOUTH AFRICA ERO Electronic S A Pty Ltd Ar ro House 343 Spokeshave Avenue Storm Ext 2 ROODEPOORT Tel 011 4742278 9 Fax 011 4749404 P O Box 43112 Industria 2042 ero sa kingsley co za SPAIN ERO FLECTRONIC IBERICA Calle La granja Polin M Icol dudes Tel 091 6618194 Fax 091 6619093 U K ERO U K Unit 1 Cygnet Trading Estate Faraday ose Durrin fon Worth ing WEST SUSSEX BN13 3RQ Tel 01903 693322 Fax 01903 693377 U S A AMERICAN ERO Electronic Corp BARRINGTON ILL 60010 Tel 0847 382 0881 Fax 0847 382 0240 U S A BARBER COLMAN Industrial Instruments Div P O Bi 0 Loves Park IL 31132 2940 Tel 0815 637 3000 Fax 0815 637 5341 jgsearle ad com
29. n has been depressed at the end of 2 s timeout MANUAL FUNCTION The MANUAL function can be accessed only if enabled by P34 On by depressing the MAN pushbutton for more than 1 sec The command is accepted and executed only if the display is in Normal Display Mode When in MANUAL mode the LED s MAN annunciator will light up while the lower display shows the power output values The value of rEV is shown in the two most signifi cant digit field while the value of dir if present is shown in the two less significant digit field The decimal point between the two values will be flashing to indicate instrument in manual mode NOTE A graphic symbol C101 is used for rEV 100 A graphic symbol is used for dir 100 The power output can be modified by using and W pushbuttons In manual mode the output resolution is equal to 196 By depressing for more than 1 second MAN pushbutton the device returns in AUTO mode 20 The transfer from AUTO to MANUAL and viceversa is bumpless this function is not provided if integral action is excluded If transfer from AUTO to MANUAL is performed during the first part of SMART algorithm TUNE when returning in AUTO the device will be forced automatically in the second part of the SMART algorithm ADAPTIVE At power up the device will be in the AUTO mode or as it was left prior to power shut down depending on P35 configuration selection NOTE When start up occurs in Ma
30. n is possible only by logic input Set point transfer The transfer between one set point to another or between two different set point values may be realized by a step transfer or by a ramp with two different programmable rate of change ramp up and ramp down Slope value 1 100 eng unit min or step Set points limiter RLO and RHI parameters pro grammable CONTROL ACTIONS Control action PID SMART Type One heating or cooling or two heating and cooling control outputs Proportional Band Pb Range from 1 0 to 100 0 of the input span for process with one control output from 1 5 to 100 0 of the input span for process with two control outputs When Pb 0 the control action becomes ON OFF Hysteresis for ON OFF control action from 0 196 to 10 096 of the input span Integral time Ti from 1s to 20 min or excluded Derivative time Td from 1 s to 10 min If zero value is selected the derivative action is excluded Integral pre load from 0 0 to 100 0 96 for one control output from 100 0 cooling to 100 0 heating for two control outputs qp gt SMART keyboard enabling disabling Auto Manual selectable by front pushbutton Auto Manual transfer bumpless method type Indicator MAN OFF in auto mode and lit in manual mode OUTPUTS Type The LFS mA is equipped with 3 independ ent outputs programmable as follows Out 1 Out 2 Out
31. nd the instrument will use an hysteresis value equal to the programmed band minus 1 digit Alarm 2 threshold This parameter is available only if P 11 is equal to AL2 P AL2 b or AL2 d and P13 OPrt For other details see AL1parameter Alarm 2 hysteresis This parameter is available only if P 11 is equal to AL2 P AL2 b or AL2 d and P13 OPrt For other details see HSA1parameter Proportional band Range from 1 0 to 200 0 of the input span When Pb parameter is set to 0 the control action becomes ON OFF HyS Cy2 Note When device is working with Cy3 SMART algorithm the Pb value will be limited by P31 and P32 parameters Hysteresis for ON OFF control action This parameter is available only when rC Pb 0 Range from 0 1 to 10 0 of the input span Integral time This parameter is skipped if Pb 0 ON OFF action Range from 00 01 to 20 00 mm ss Above this value the display blanks and integral action is excluded Note When the device is working with SMART algorithm the minimum value of the integral time will be limited by P33 parameter Derivative time This parameter is skipped if Pb 0 ON OFF action or P41 Pi Range From 00 00 to 10 00 mm ss Notes When device is working with SMART algorithm the td value will be equal to a quarter of ti value Integral pre load Ranges from 0 0 to 100 0 96 of the output span if device is configured for one control rL output from 100 0 to 100 0 96
32. nected at one point only RTD INPUT RTD RTD Se oN o 70 ta E J Pha god Fig 5 RTD INPUT WIRING NOTE 1 Don t run input wires together with power cables 2 Pay attention to the line resistance a high line resistance may cause measurement errors 3 When shielded cable is used it should be grounded at one side only to avoid ground loop currents 4 The resistance of the 3 wires must be the same LINEAR INPUT Fig 6 mA mV AND V INPUTS WIRING NOTE 1 Don t run input wires together with power cables 2 Pay attention to the line resistance a high line resistance may cause measurement errors 3 When shielded cable is used it should be grounded at one side only to avoid ground loop currents 4 The input impedance is equal to 5 Q for 20 mA input gt 1 MO for 60 mV input gt 200 kQ for 5 V input gt 400 kQ for 10 V input B LOGIC INPUT Safety note 1 Do not run logic input wiring together with power cables 2 Use an external dry contact capable of switching 0 5 mA 5 V DC 3 The instrument needs 100 ms to recognize a contact status variation 4 The logic inputs are NOT isolated by the measuring input SP SP2 14 e e 15 Fig 7 LOGIC INPUT WIRING This logic input allows to select the opera
33. nes the P38 value to the PID output but P18 and P20 parameter are still active P39 Digital filter on the displayed value It is possible to apply to the displayed value a digital filter of the first order with a time constant equal to 4s for TC and RTD inputs 2 s for linear inputs nOFL no filter FLtr filter enabled P40 Digital filter on the retransmitted value This parameter is available only if P5 2 PV rt It is possible to apply to the retransmitted value a digital filter of the first order with a time constant equal to 4s for TC and RTD inputs 2 s for linear inputs nOFL no filter FLtr filter enabled P41 Control action type This parameter is skipped when none of the outputs is programmed as control output Pid The process is controlled by PID action Pi The process is controlled by PI action P42 Extension of the anti reset wind up Range from 30 to 30 of the proportional band NOTE a positive value increases the high limit of the anti reset wind up over set point while a 17 negative value decreases the low limit of the anti reset wind up under set point P43 Set point indication Fn SP during operative mode when the instrument performs a ramp it will show the final set point value OP SP during operative mode when the instrument performs a ramp it will show the operative set point P44 Operative set point alignment at instrument start up 0 At star
34. nfiguration procedure the device performs an automatic reset and then returns to close loop control SMART function It is used to optimize automatically the control action To enable the SMART function push the FUNC pushbutton until Snrt parameter is shown Pushing or W setthe display On and push the FUNC pushbutton The SMRT LED will turn on or flashing according to the algorithm selected When the smart function is enabled it is possible to display but not to modify the control parameters To disable the SMART function push the FUNC pushbutton again until Snrt parameter is shown Pushing A or W setthe display OFF and push the FUNC pushbutton The SMRT LED will turn off The instrument maintains the actual set of control parameters and it enables parameter modifica tion NOTES 1 When ON OFF control is pro grammed Pb 0 the SMART function is disabled 2 The SMART enabling disabling can be protected by safety key see P30 OPERATIVE PARAMETERS Push the FUNC pushbutton the lower display will show the code while the upper display will show the value or the status On or OFF of the selected parameter By A or Y pushbutton it is possible to set the desired value or the desired status Pushing the FUNC pushbutton the instrument memorizes the new value or the new status and goes to the next parameter Some of the following parameter may be skipped according to the instrument configuration Par
35. nual mode with power output set to 0 the control outputs will be in accordance with the following formula rEV output dir output 0 LAMP TEST When it is desired to verify the display efficiency push FUNC pushbutton for more than 10 s The instrument will turn ON with a 50 96 duty cycle all the LEDs of the display we define this function LAMP TEST No time out is applied to the LAMP TEST When it is desired to come back to the normal display mode push FUNC pushbutton again During the LAMP TEST the instrument continues to control the process but no keyboard functions are available exception made for the FUNC pushbutton SERIAL LINK The device can be connected to a host computer by a serial link The host can put the device in LOCAL functions and parameters are controlled via keyboard or in REMOTE functions and parameters are controlled via serial link The REMOTE status is signalled by the decimal point labelled REM at the right hand of the LSD of the upper display This instrument allows to modify the operative and configuration parameters via serial link The necessary conditions to implement this function are the following 1 Serial parameters from SEr1 to SEr4 should be properly configured using the standard front keyboard procedure 2 Device must be in the OPERATING mode During the downloading of configuration the device goes in open loop with all output in OFF state At the end of co
36. perative temperature from 0 to 50 C Storage temperature 20 to 70 C Humidity from 20 to 85 RH non condensing Protections 1 WATCH DOG circuit for automatic restart 2 DIP SWITCH for protection against tampering of configuration and calibration parameters INPUTS A THERMOCOUPLE Type L J K N R S T C F selectable External resistance 100 O max maximum error 0 196 of span Burn out It is shown as an overrange condition standard It is possible to obtain an underrange indication by cut and short Cold junction automatic compensation from 0 to 50 C Cold junction accuracy 0 1 C C Input impedance 1 MO Calibration according to IEC 584 1 and DIN 43710 1977 STANDARD RANGES TABLE TIC Ranges type L 10 0 400 0 C d L i 0 4900 C 20 0 4 1650 F J 2 100 0 400 0 C gt J 3 100 1000 C 21 150 1830 F K 4 100 0 400 0 C Da K 5 100 1370 C 22 150 2500 F T 6 199 9 400 0 C 23 330 750 F N 7 100 1400 C 24 150 2550 F R8 0 1760 C 25 0 4 3200 F S 9 0 1760 C 26 0 4 3200 F B RTD Resistance Temperature Detector Input for RTD Pt 100 O 3 wire connection Input circuit current injection C F selection via front pushbuttons or serial link Line resistance automatic compensation up to 20 Q wire with no measurable error Calibration according to DIN 43760
37. r the secondary control output This parameter is available only when two control outputs are configured nOrL the displayed value is equal to the result of PID calculation CnPL the displayed value is complemented 100 PID calculation NOTE when two control outputs are configured the P18 and P19 selections are applied to the rEv control output while P20 and P21 selections are applied to the dir control output P22 Cooling media Available only when the device is configured with two control outputs Alr Air is used as cooling media OIL Oil is used as cooling media H20 Direct water is used as cooling media Changing P22 parameter the instrument forces the cycle time and relative cooling gain param eters to the default value related with the chosen cooling media When P22 Alr Cyx 10 s and rC 1 00 P22 OIL Cyx 4 s and rC 0 80 P22 H20 Cyx 2 and rC 0 40 Where Cyx is the cycle time Cy2 or Cy3 of the out programmed as dir control output P23 Relative cooling gain calculated by SMART function Available only when device is configured with two control outputs OFF SMART algorithm does not calculate the rC parameter value On SMART algorithm calculates the rC parameter value P24 Alarm 1 action Available only when P9 AL1 P AL1 d or AL1 b dir direct action relay energized in alarm condi tion rEV reverse action relay de energized in alarm condition
38. s programmable from 0 1 to 10 0 of the input span P4 P3 or 1 LDS Band alarm Operative mode Inside or outside programmable Threshold programmable from 0 to 500 units Hysteresis programmable from 0 1 to 10 0 of the input span or 1 LDS Deviation alarm Operative mode High or low programmable Threshold programmable from 500 to 500 units Hysteresis programmable from 0 1 to 10 0 of the input span or 1 LDS SERIAL COMMUNICATION INTERFACE Type RS 485 Protocol type MODBUS JBUS ERO polling selecting Baud rate programmable from 600 to 19200 BAUD Byte format 7 or 8 bit programmable Parity even odd or none programmable Stop bit one Address from 1 to 95 for ERO protocol from 1 to 255 for all the other protocols Output voltage levels according to EIA standard MAINTENANCE 1 REMOVE POWER FROM THE POWER SUPPLY TERMINALS AND FROM RELAY OUTPUT TERMINALS 2 Remove the instrument from case 3 Using a vacuum cleaner or a compressed air jet max 3 kg cm remove all deposit of dust and dirt which may be present on the louvers and on the internal circuits trying to be careful for not damage the electronic components 4 To clean external plastic or rubber parts use only a cloth moistened with Ethyl Alcohol pure or denatured C H OH or Isopropil Alcohol pure or denatured CH CHOH or Water H 0 5 Verify that there are no loose terminals 6 Before re in
39. s in point b PARA TABLE 1 TABLE 2 SEr 1 ErO ERO SEr 2 1 1 SEr3 19200 19200 SEr4 7E TE P1 3 21 P2 P3 0 0 P4 400 1000 P5 rEV rEV P6 0 20 0 20 RZ 0 0 P8 400 1000 P9 nonE nonE P10 H A H A P11 nonE nonE P12 H A H A P13 OPrt OPrt P14 0 0 P15 0 1 0 1 P16 0 0 P17 0 0 P18 norL norL P19 norL norL P20 norL norL P21 norL norL P22 Air Air P23 OFF OFF P24 rEV rEV P25 OFF OFF P26 rEV rEV P27 OFF OFF P28 0 0 Appendix A 2 P29 P31 P32 P34 P35 P37 P38 P40 P41 P42 P43 P44 Fn Sp Fn Sp Appendix A 3 E eocen Ero Electronic S r l Via E Mattei 21 28100 Novara Italy Tel 39 0321481111 Fax 39 0321481112 eroelectronic ero eurotherm co uk BENELUX ERO Electronic Benelux SA NV Rue Val Notre Dame 384 MOHA 4520 WANZE Tel 085 274080 Fax 085 274081 ero electronic skynet be BRASIL ERO ELECTRONIC DO BRASIL Industria e Comercio Ltda Rua Garibaldi 659 Conj 202 90035 050 PORTO ALEGRE Tel 051 2214888 Fax 051 2214734 erobr nutecnet com br CHINA TIANJIN VEGA COMPANY Ltd TAIF Hebei District 300232 TIANJIN Tel 022 26273296 Fax 022 26273297 FRANCE ERO Electronic SARL Zac du Ch ne 34 Rue du 35 me gt Regiment d Aviation 69673 BRON CED Tel 0478267979 Fax 0478267800 GERMANY ERO Electronic GmbH Ottostrasse 1 65549 LIMBURG A D LAHN Tel 06431 95680 Fax 06431 57493 NETHERLAND ERO Electronic Nederland Ganieelan 4 2404 CH Alphe
40. same self diagnostic algorithm When an error is detected the instrument shows on the lower display the Err indication while the upper display shows the code of the detected error ERROR LIST SEr 100 150 200 201 2xx 299 301 320 400 500 510 NOTES Serial interface parameter error Write EEPROM error CPU error Tentative to write on protected memory Configuration parameter error The two less significant digits shown the number of the wrong parameter ex 209 Err shows an Error on P9 parameter Error on control output selection Selected input calibration error RJ input calibration error Analog retransmission calibration error Control parameters error Auto zero error RJ error Error during calibration procedure 1 When a configuration parameter error is detected it is sufficient to repeat the configura tion procedure of the specified parameter 2 If error 400 is detected push contemporarily the W and A pushbuttons for loading the default parameters then repeat control parameter setting 3 For all the other errors contact your supplier GENERAL INFORMATIONS GENERAL SPECIFICATIONS Case Polycarbonate grey dark color self extin guishing degree V 0 according to UL 94 Front protection designed and tested for IP 65 and NEMA 4X for indoor locations when panel gasket is installed Test were performed in accordance with CEI 70 1 and NEMA 250 1991 STD Install
41. serting the instrument in its case be sure that it is perfectly dry 7 re insert the instrument and turn it ON APPENDIX A DEFAULT PARAMETERS DEFAULT OPERATIVE PARAMETERS The control parameters can be loaded with predetermined default values These data are the typical values loaded in the instrument prior to shipment from factory To load the default values proceed as follows a The internal switch should be closed b The SMART function should be disabled c The upper display will show the process variable while the lower display will show the Set point value the device must be in UNLOCK and LOCAL conditions Held down W pushbutton and press pushbutton the display will show OFF dFLt d e e ON dFLt g Press FUNC pushbutton the display will show LOAd This means that the loading procedure has been initiated After about 3 seconds the loading procedure is terminated and the instrument reverts to NORMAL DISPLAY mode The following is a list of the default operative parame ters loaded during the above procedure Press A or V pushbutton the display will show PARAMETER SP SnrT n Srt SP2 nnn A1 A2 HSA1 HSA2 Pb OLAP rL Grd 1 Grd 2 OLH tOL rnP Appendix A 1 DEFAULT VALUE Minimum range value Disabled OFF Minimum range value OFF Minimum range value for process alarms 0 for deviation or band alarms 0 1 40 20 5 96 4 00 4
42. t up the operative set point will be aligned to SP or SP2 according to the digital input status 1 At start up the operative set point will be aligned to the measured value the selected set point value will be reached by the programmed ramp see Grd1 and Grd2 operative parameters NOTE if the instrument detects an out of range or an error condition on the measured value it will ever operate as described for P44 0 The configuration procedure is terminated and the display returns to show COnF OPERATIVE MODE 1 Remove the instrument from its case 2 Set the internal dip switch V101 in closed condi tion 3 Re insert the instrument 4 Switch on the instrument DISPLAY FUNCTION The upper display shows the measured value while the lower display shows the programmed set point value we define the above condition as normal display mode NOTE When the rate of change Grd1 Grd2 is utilized the displayed set point value may be different from the operating set point It is possible to change the information on the lower display as follows Push FUNC pushbutton for more than 3 seconds but less than 10 seconds The lower display will show r followed by the power value of the OUT programmed as rEV control output from 0 0 to 100 0 Push FUNC pushbutton again The lower display will show d followed by the power value of the OUT programmed as dir control output from 0 0 to 100 0
43. tive set point logic input op set point open SP close SP2 C RELAY OUTPUTS NO OUT 2 e 1 OUT 2 NO OUT 3 e 3 Hess pz O OUT 2 and3 Fig 8 RELAY OUTPUTS WIRING The contact rating of the OUT 2 3 is 2A 250V AC on resistive load The number of operations is 1 x 105 at specified rating NOTES 1 To avoid electrical shock connect power line at the end of the wiring procedure 2 Forpowerconnections use No 16 AWG or larger wires rated for at last 75 C 3 Use copper conductors only 4 Don t run input wires together with power cables The relay contacts are protected by varistor against inductive load with inductive component up to 0 5 A The following recommendations avoid serious problems which may occur when using relay output for driving inductive loads INDUCTIVE LOADS LINEAR OUTPUT High voltage transients may occur switching This instrument is equipped with one linear output inductive loads OUT 1 programmable as Through the internal contacts these transients main output heating or cooling may introduce disturbances which can affect the Secondary output cooling performance of the instrument analog retransmission of the measured value For the OUT 2 and OUT 3 the internal protection analog retransmission of the operative set point varistor assures a correct protection up to 0 5 A of inductive component The same problem may occur when a switch is
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