Xylem DIQ/S 281 Operating Manual Download Page 138

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Technical data

DIQ/S 281

ba76226e02

03/2023

138

Valve circuits

NOTE

The valve may only be operated with the auxiliary voltage of the DIQ/S 281 uni-
versal transmitter.

Compressed air

9.4

Space required by mounted components

9.4.1 DIQ/S 281

Wall mounting and

top hat rail

mounting

figure 9-5

Space required for wall and top hat rail mounting: (dimensions in mm)

Panel mounting

(PMS/IQ)

figure 9-6

Space required for panel mounting (PMS/IQ) (dimensions in mm)

Switching voltage

Approx. 22 V

Max. switching current

Approx. 40 mA

Required air quality

Dry, free of dust and oil

Operating pressure

Max. 5 x10

Pa (5 bar) absolute

Connections on the DIQ/CHV

6 mm hose nozzles

244

195

290xx

Space for screw driver

Wall or top hat rail
mounting:

Space for screw
driver

Panel mounting

Summary of Contents for DIQ/S 281

Page 1: ...OPERATING MANUAL ba76226e02 03 2023 DIQ S 281 UNIVERSAL TRANSMITTER FOR ONE DIGITAL SENSOR UN IVER SA L TR AN SM ITT ER DIQ S 281...

Page 2: ...System 281 Contact YSI 1725 Brannum Lane Yellow Springs OH 45387 USA Tel 1 937 767 7241 800 765 4974 Email info ysi com Internet www ysi com Copyright 2022 Xylem Inc For the most recent version of th...

Page 3: ...Requirements of the measurement location 13 3 3 Safety requirements of the electrical installation 13 3 4 Installation guidelines for lightning protection 14 3 5 Connecting system components 16 3 5 1...

Page 4: ...6 4 4 Display of current measured values 67 4 5 Messages and log book 67 4 5 1 Message types 67 4 5 2 Log book 68 4 5 3 Viewing detailed message texts 70 4 5 4 Acknowledge all messages 71 4 6 Calibrat...

Page 5: ...ut with a sensor 106 6 5 Deleting a link with an output 107 6 6 Setting the relay outputs 108 6 6 1 Relay action 109 6 6 2 System monitoring 110 6 6 3 Sensor monitoring 111 6 6 4 Limit indicator 112 6...

Page 6: ...Space required by mounted components 138 9 4 1 DIQ S 281 138 9 4 2 DIQ S 281 with an additional component stack mounting 139 10 Accessories and options 140 11 Messages 141 11 1 Explanation of the mess...

Page 7: ...in addition e g temperature can be displayed and administrated Each sensor is automatically recognized after being connected and immediately starts measuring For connection to existing process control...

Page 8: ...etails see operating manual Field bus linking Compressed air driven cleaning system The universal transmitter DIQ S 281 is prepared for the compressed air driven time controlled sensor cleaning functi...

Page 9: ...tion of a USB memory device to be used as an electronic key for sim ple access to the system when access control is switched on see section 5 3 3 Connection of a USB hub for the reproduction of the US...

Page 10: ...uts switch to the non active condition open Current outputs switch to the non active condition 0 mA A restart is carried out automatically when the power returns The continues working with the setting...

Page 11: ...n where goods might be damaged if the actions mentioned are not taken 2 1 2 Safety signs on the product Note all labels information signs and safety symbols on the product A warning symbol triangle wi...

Page 12: ...opened if this is explicitly described in this operating manual example connecting electrical lines to the terminal strip 2 2 3 Unauthorized use The product must not be put into operation if it is vis...

Page 13: ...nce may only be carried out under controlled environmental conditions 3 3 Safety requirements of the electrical installation Electrical equipment such as motors contactors cables lines relays switches...

Page 14: ...ges an inte grated concept of the following protective measures is required internal device related protective measures and external protective measures of the installation environment The internal de...

Page 15: ...ization and a surge protection system for the plant 6 Part of the safety and lightning protection concept is based on the high qual ity protective insulation of the DIQ S 281 It does not have or requi...

Page 16: ...IQ sensors at the edge of the basin The spatial distance is bridged with the aid of the SNCIQ or SNCIQ UG cable section 3 5 3 Connection of IQ sensors IQ sensors are connected to an MIQ module with th...

Page 17: ...ips screwdriver Both installation variants are described below To dismantle a module stack proceed in the reverse order to mounting the stack For optimum stability a maximum of three modules DIQ MIQ c...

Page 18: ...rear MIQ module 2 Contact cover rear MIQ module 3 Covers of the drilled mounting holes front MIQ module 4 Label front MIQ module 1 Remove the covers from the drilled mounting holes pos 1 and 3 in figu...

Page 19: ...se 6 Tapping screws 7 Countersunk screws Only IQ Sensor Net products may be used in the IQ Sensor Net 4 Attach the contact base pos 5 in figure 3 2 on the front MIQ module with the two plastic tapping...

Page 20: ...gure 3 3 Mounting the contact base variant 1 8 Cheese head screws 9 ISO blind nuts 6 Insert the cheese head screws pos 8 in figure 3 2 with the plastic washers in the drilled mounting holes in the enc...

Page 21: ...ensure that the two clips on the front MIQ module click into place in the lid of the back MIQ module Subsequently tighten the two screws pos 8 in figure 3 3 figure 3 5 Closing the enclosure variant 1...

Page 22: ...illed mounting holes front MIQ module 4 Label front MIQ module 5 Countersunk screws 1 Remove the covers from the drilled mounting holes pos 1 and 3 in figure 3 6 2 Remove the contact cover pos 2 3 Pul...

Page 23: ...nting the contact base variant 2 6 Contact base 7 Tapping screws Only use the plastic tapping screws supplied for attaching the con tact base They ensure the correct fit 5 Attach the contact base pos...

Page 24: ...nuts figure 3 8 Premounting the ISO blind nuts variant 2 8 Cheese head screws 9 ISO blind nuts 6 Insert the cheese head screws pos 8 in figure 3 8 with the plastic washers in the drilled mounting hol...

Page 25: ...9 Stacking the MIQ modules variant 2 7 Attach the prepared MIQ module to the back of the front MIQ module At the same time ensure that the two clips on the front MIQ module click into place in the lid...

Page 26: ...e housing The two 3 fold terminal strips on the right are always reserved for the connection of further IQ SENSORNET components designation SENSORNET 1 and SENSORNET 2 Some MIQ modules have additional...

Page 27: ...cable ends 1 Cut off the cable to the required length 2 Remove approx 45 mm of cable insulation in the case of the SNCIQ UG earth cable remove both the inner and outer insulation 3 Only for the SNCIQ...

Page 28: ...to the MIQ module 1 Cable gland 2 Seal 3 Coupling ring 3 Screw the cable gland pos 1 in figure 3 12 with the sealing ring pos 2 in figure 3 12 into the module housing 4 Loosen the cap nut pos 3 in fig...

Page 29: ...d all the wires are fitted with wire end sleeves Tools Phillips screwdriver Small screwdriver 7 Tighten the cap nut pos 3 in figure 3 12 8 Close the MIQ module figure 3 13 Closing the cable opening 1...

Page 30: ...ing the cable example DIQ S 281CR2 1 On the left hand side of the DIQ S 281 remove the two countersunk screws and open the enclosure 2 Screw the cable gland pos 1 in figure 3 14 with the sealing pos 2...

Page 31: ...ble ends to the terminal strip At the same time look out for the designations of the terminals red shield green 6 Tighten the cap nut pos 3 in figure 3 14 7 Close the enclosure The complete assignment...

Page 32: ...pos 1 in figure 3 16 with the sealing pos 2 into the housing at the mounting position for the SENSORNET connection see label on the bottom of the housing 3 Loosen the cap nut pos 3 in figure 3 16 4 Fe...

Page 33: ...d by a sun shield against the effects of the weather snow ice and direct solar radiation Otherwise mal 5 Connect the cable ends to the terminal strip At the same time look out for the designations of...

Page 34: ...g rails with the aid of the MR SD 170 mounting kit section 3 6 3 Wall mounting The universal transmitter is permanently fixed to a wall For wall mounting use the WMS IQ mounting set see chapter 10 ACC...

Page 35: ...ind nuts 1 Screw the sun shield pos 1 in figure 3 18 with the four hexsocket head screws pos 2 the washers pos 3 and the clamps pos 4 at the required height on the mounting stand from the back 2 3 4 1...

Page 36: ...Materials required SD K 170 sun shield see chapter 10 ACCESSORIES AND OPTIONS The MR SD 170 mounting kit is also required for mounting the sun shield on a mounting stand or railing see chapter 10 ACCE...

Page 37: ...THS IQ kit for top hat rail mounting see chapter 10 ACCESSORIES AND OPTIONS Tools Phillips screwdriver 1 Remove the two countersunk screws pos 1 in figure 3 21 and swing open the module lid 2 Position...

Page 38: ...t enables to mount the DIQ S 281 in the switch panel so that the fieldbus interface is accessible behind the switch panel 1 Screw the clamping assembly pos 1 in figure 3 22 on the back of the universa...

Page 39: ...ing set is described below Materials required PMS IQ kit for panel mounting see chapter 10 ACCESSORIES AND OPTIONS Tools 3 mm set screw wrench contained in the panel installation kit Switch panel aper...

Page 40: ...re from the front 2 Slightly unscrew the bolts pos 2 and 3 of the two angle brackets pos 1 in figure 3 24 but do not remove them 3 Push in the two angle brackets as shown in figure 3 24 into the later...

Page 41: ...mping range 4 5 to 10 mm This cable gland is suitable for all cables earth cable after stripping the outer insulation see section 3 6 and sensor connection cables Large clamping range 7 to 13 mm This...

Page 42: ...enclosure must be cut off as closely as possible to the cable gland Screw a small cable gland with sealing ring into each remaining free opening and close it with a blind plug 3 8 Connecting the volta...

Page 43: ...the power supply may only be carried out when it is not carrying any voltage The power supply must fulfill the specifications given on the nameplate and in chapter 9 TECHNICAL DATA When installed in...

Page 44: ...e approx 45 mm L N cut ground wire here 5 On the left hand side of the DIQ S 281 remove the two countersunk screws and open the enclosure 6 Screw a cable gland pos 1 in figure 3 26 with sealing ring p...

Page 45: ...ith the specification on the terminal label under the terminal strip 10 Tighten the cap nut pos 3 in figure 3 26 WARNING No free wires are allowed to project into the housing Oth erwise there is a dan...

Page 46: ...ifications quoted on the name plate and in chapter 9 TECHNICAL DATA protective low voltage SELV The connection of the DIQ S 281 universal transmitter to the power supply may only be carried out when i...

Page 47: ...On the left hand side of the DIQ S 281 remove the two countersunk screws and open the enclosure 5 Screw a cable gland pos 1 in figure 3 29 with sealing ring pos 2 into the enclosure below the 24 V AC...

Page 48: ...f any wires that are not in use as closely as possible to the cable gland The complete assignment of the terminal strip is shown in section 3 12 8 Connect wires 1 and 2 to the terminal strip Make sure...

Page 49: ...bject to the danger of physical contact may only be connected by a qualified electri cian Electrical circuits subject to the danger of physical contact may only be connected when they are voltage free...

Page 50: ...the terminal strip is shown in section 3 12 2 Screw a cable gland pos 1 in figure 3 31 with the sealing ring pos 2 into the enclosure below the respective connections 3 Loosen the coupling ring pos 3...

Page 51: ...erminals to the valve module The auxiliary voltage must not be used for other purposes Connection scheme for one sensor with compressed air cleaning Run the bridge below the divider so the bridge does...

Page 52: ...ot yet pro viding any measurement values Init appears temporarily Relais contact Bridge Auxiliary voltage output Valve control line Separating plate Start checklist 1 Are all components correctly conn...

Page 53: ...process can take several seconds During this period the following display appears figure 3 32 Display during the initialization process Second start phase As soon as the Universal Transmitter is succ...

Page 54: ...gth SNCIQ UG plus SACIQ 250 m 1 1 2 2 3 3 4 4 5 5 6 6 7 7 SNCIQ UG SNCIQ UG SACIQ Sensor 1 Sensor 1 SACIQ DIQ JB DIQ S 281 24V DIQ S 281 24V S C M ESC OK USB UNIVERSAL TRANSMITTER UNIVERSAL TRANSMITTE...

Page 55: ...ELV voltages only DIQ CHV DIQ JB SNCIQ UG SACIQ Valve control line Air Sensor Maximum total cable length SNCIQ UG plus SACIQ 250 m DIQ S 281 24V S C M ESC OK USB UNIVERSAL TRANSMITTER UNIVERSAL TRANSM...

Page 56: ...Klemmleiste DIQ S 281 Klemmleiste DIQ CHV VALVE DISTRUBUTION Ventil Steuerleitung X15 X14 13 X12 X11 X10 R1 AUXILIARY VOLTAGE R2 X1 X4 X2 X5 X3 X6 X7 SNCIQ UG green Shield filler strand black green re...

Page 57: ...cable length SNCIQ UG plus SACIQ 250 m 1 1 2 2 3 3 4 4 5 5 6 6 7 7 SNCIQ UG SNCIQ UG DIQ S 281 24V SACIQ DIQ S 281 Sensor SACIQ DIQ JB S C M ESC OK USB UNIVERSAL TRANSMITTER UNIVERSAL TRANSMITTER DIQ...

Page 58: ...2 R2 R1 240V AC 2A AC 240V AC 2A AC SENSORNET 1 RED SHIELD GREEN X3 X2 X11 X15 X13 X7 X1 X10 X14 X12 X6 AUXILIARY R2 R1 240V AC 2A AC AUXILIARY VOLTAGE 0 4 20mA REC C2 X5 X4 0 4 20mA REC C1 240V AC 2A...

Page 59: ...n of current measured values the graph of measured values status displays and message texts The 5 keys M C S ESC OK and the arrow keys are used to operate the DIQ S 281 Universal Transmitter figure 4...

Page 60: ...quires immediate action see section 4 5 3 6 Info symbol If the info symbol flashes new or unacknowledged information is present in the log book see section 4 5 3 7 Display range for measured values me...

Page 61: ...t 4 Series number of the sensor 5 Unit and parameter of the main measured value 6 User right details see above 1 2 3 4 5 6 Init Sensor is being initialized during commissioning or if a new IQ sensor i...

Page 62: ...o the next higher level with the ESC key Start a calibration procedure with the C key Switch to the settings with the S key Change to the measured value display and break off current actions with the...

Page 63: ...en Settings menu with S Menus appear in the form of a list on the display e g the Einstellungen Settings menu shown here figure 4 4 Einstellungen 2 Select a menu item e g System settings with Move the...

Page 64: ...dit list of outputs menu item with 3 Confirm the Edit list of outputs menu item with OK The Edit list of outputs display opens A column is highlighted 4 Select the Name column with 5 Confirm the Name...

Page 65: ...4 6 Edit list of outputs The following letters numerals and special characters can be entered AaBb Zz0 9 _ 8 Select a letter or numeral with 9 Confirm the letter with OK The character p appears behind...

Page 66: ...firm with OK 11 Repeat steps 8 to 10 until the whole name has been entered You can break off entering the name with ESC The old name is retained Access control is switched off in the delivery conditio...

Page 67: ...ashing information symbol or error symbol on the display All messages are recorded in the log book 4 5 1 Message types The system differentiates two types of messages Error Indicates a critical status...

Page 68: ...all detailed message texts in the log book have been opened and marked with a checkmark see section 4 5 3 Structure of the log book In the case of errors immediately open the detailed message text in...

Page 69: ...aracters and can contain numerals and let ters e g II21171 ategory Component code I 2 171 I Type number Type Posi tion Information Explanation 1 3 Short message form The short form of the message cont...

Page 70: ...ailed message texts can also be found in the component operating manuals of the individual components The log book shows the current status at the point of time it was opened If new messages arrive wh...

Page 71: ...dule 4 5 4 Acknowledge all messages figure 4 10 Log book of entire system 5 Acknowledge the message with OK A checkmark appears in the log book entry 6 Exit the message text with ESC Acknowledgment of...

Page 72: ...ibration history see section 4 6 2 2 Open the Einstellungen Settings menu with S 3 Using select the menu item Service and confirm with OK 4 Using select the menu item Acknowledge all messages and conf...

Page 73: ...rm with OK The Display Options menu opens 3 Using highlight the menu item Calibration history of sensor and confirm with OK The calibration history with the results of the last calibration procedures...

Page 74: ...cted IQ sensor linked outputs are frozen IQ sensor errors do not prompt changes in the conditions of linked outputs The maintenance condition for IQ sensors is automatically activated during calibrati...

Page 75: ...in the measured value display flashes 2 Pull the sensor out of the sample 3 Perform the calibration in the laboratory cleaning maintenance or repair removing and replacing of the sensor about these t...

Page 76: ...flashing Measured value display flashes Clean Switch on the maintenace condition Continue Cancel Display mesage Calibration Step 1 Calibration Step n end Maintenance condition ON manual Sensor cleanin...

Page 77: ...easured value display flashes 2 Open the Display Options menu with OK 3 Using highlight the menu item Switch maintenance condition on off and confirm with OK A window that informs you about the mainte...

Page 78: ...Transmitter DIQ S 281 and all active components 1 Call up the measured value display with M 2 Open the Einstellungen Settings menu with S 3 Using highlight the menu item Service and confirm with OK Th...

Page 79: ...re available on the Internet at www YSI com The instrument software is transferred to the DIQ S 281 via the USB port and with the aid of a USB memory device A Software Update does not change the measu...

Page 80: ...isplay opens figure 5 1 Language 3 Select a language from the list with and confirm with OK The active language is marked with a checkmark 4 Switch to the higher menu level with ESC or Switch to the m...

Page 81: ...No access control Administrator authorization Maintenance authorization Read permission Access control with instrument block see section 5 3 2 figure 5 2 Terminal settings Setting Selection Val ues E...

Page 82: ...configured user rights in the system Each user type can be protected with its own password User right The current user right is shown on the display with the following symbols Access to the system wit...

Page 83: ...or the instrument on which the function was acti vated Instrument block Instrument block switched off User rights as for Viewer Instrument block active The DIQ S 281 is blocked Only the IQ SENSORNET l...

Page 84: ...election dialog and or save the password to a connected USB memory 4 Note passwords For reasons of safety the administrator password at least should be saved in such a way that it can be accessed in a...

Page 85: ...ENSORNET systems can be saved to every elec tronic key For each IQ SENSORNET system only one password can be saved to each elec tronic key Saving a password to an electronic key 3 Press to select the...

Page 86: ...ialog window opens 4 Press to select an authorization level and confirm with OK 5 Using select the menu item Save access code on USB memory and confirm with OK The password for the selected authorizat...

Page 87: ...tings Einstellungen All sensors Note links are deleted Sensor setting menu Measured value display Settings of sensors Column measuring range Sensor If the measuring mode or measured parameter are chan...

Page 88: ...me to each output in the Edit list of outputs display Linking outputs and sensors seesection 6 4 1 Open the Einstellungen Settings menu with S 2 Using and OK select and confirm the menu item System se...

Page 89: ...he display As a relay action 5 6 2 Setting up editing alarms figure 5 6 Edit list of outputs enter a name An alarm message via display or relay cannot be acknowledged or switched off An alarm only dis...

Page 90: ...with To set up a new alarm without entry select in the Sensor column Then confirm with OK When a new alarm is set up a list with all sensors appears first Alarm links that are already available can b...

Page 91: ...or e g pH oxygen etc Adjoining variable designates an additional measured parameter e g temperature Limit value Lower limit Upper limit Type of the alarm event Lower limit An alarm is triggered if the...

Page 92: ...it carries out the specified action Open or Close For details see section 5 6 3 ALARM OUTPUT TO DISPLAY Accept The settings are taken over in the setting table by pressing OK The display switches to...

Page 93: ...tion is only available for relays that are not linked with a sensor If necessary an existing link must be erased For details please refer to the operating manual of the output module 5 7 System settin...

Page 94: ...display Date Time The clock in the DIQ S 281 bridges periods of power failure of up to several hours After a longer power failure the clock starts precisely at the time of the failure A message and an...

Page 95: ...Function code Function for the service staff figure 5 12 Location altitude Air pressure 3 Press to select Set altitude of location or Set air pressure and confirm with OK 4 Press to change the values...

Page 96: ...ee section 6 4 Erase links between outputs and the sensor seesection 6 5 Set up outputs see section 6 6 and section 6 7 Check the conditions of the outputs see section 6 8 Basis information on the use...

Page 97: ...ng way Monitoring a limiting value using a relay when a limiting value upper or lower limiting value is exceeded or undercut a relay switches The Open or Close relay actions are possible in each case...

Page 98: ...es cyclically on and off in a defined measured value range proportional range At the same time the relay switches with a duration of operation that corresponds to the measured value pulse width output...

Page 99: ...in the upper output range and a further relay in the lower output range see page 99 Output with one relay Output with two relays figure 6 3 Output with two relays figure 6 2 Output with one relay 10...

Page 100: ...Frequency output Switching frequency output is used e g for controlling dosing pumps In contrast to the pulse width output the pulse width is not modulated with the frequency output but the switching...

Page 101: ...n or frequency decreases with an increasing measured value see page 104 The maximum values for the pulse width or switching frequency are assigned to the End value value and the minimum values for tur...

Page 102: ...re 6 6 Positive characteristic curve figure 6 7 Negative characteristic curve Measured value Switching frequency f or Pulse v width End value Start value Max Min Measured value Start value End value M...

Page 103: ...9 Frequency output 1 Start value Measured value with a minimum pulse width or switching frequency 2 End value Measured value with a maximum pulse width or switching frequency 0 10 50 90 100 Proportio...

Page 104: ...11 Frequency output 1 Start value Measured value with a minimum pulse width or switching frequency 2 End value Measured value with a maximum pulse width or switching frequency 0 10 50 90 100 Proporti...

Page 105: ...erview 1 Open the Einstellungen Settings menu with S 2 Using and OK select and confirm the menu item System settings Edit list of outputs The Edit list of outputs display opens 3 Press to highlight a...

Page 106: ...splay opens 3 Press to highlight the column and confirm with OK 4 Select an output with and confirm with OK The Link with display opens The display shows a list of sensors that can be linked figure 6...

Page 107: ...ing and OK select and confirm the menu item System settings Settings of outputs and links The Settings of outputs and links display opens 3 Press to highlight the column and confirm with OK 4 Select a...

Page 108: ...confirm with OK The Settings of outputs and links display appears 4 Using highlight the Feature column Confirm with OK 5 Using highlight a line for a relay output Rx in the column Feature Confirm wit...

Page 109: ...n 6 6 4 Frequency controller see section 6 6 5 Pulse width output see section 6 6 6 Cleaning see section 6 6 7 Manual control see section 6 6 8 Alarm contact see section 6 6 9 8 Make the settings for...

Page 110: ...the relay remains open for 10 seconds and only closes when the malfunction is no longer present In the following cases the relay does not open despite an invalid measured value The sensor is being cal...

Page 111: ...rrors Setting Selection Explanation Error Special Special sensor errors are monitored and can prompt a relay action All All sensor errors special ones and general ones are monitored and can prompt a r...

Page 112: ...variable UL adjoining var LL adjoining var Main variable designates the actual measured parameter of the sensor e g pH oxygen etc Adjoining variable designates an additional measured parameter e g tem...

Page 113: ...e entered that is smaller than the value for Start value Setting Selection Values Explanation Measured variable Main variable Adjoining variable Main variable designates the actual measured parameter...

Page 114: ...ensor cleaning function with the aid of a relay of the combination output module The relay controls the DIQ CHV valve module and switches the compressed air for the CH sensor cleaning head on or off S...

Page 115: ...n see section 6 6 8 and while doing so check the behavior of the cleaning system Alternatively you can test the operativeness of the cleaning system by checking the performance of the function at the...

Page 116: ...180 s max 300 s With this the cleaning times are fixed They only change when the Reference time h is changed The reference time and all further cleaning times relate to the date and time of the system...

Page 117: ...ased immediately If the cleaning cycle is canceled manually the sensor is in the maintenance condition The linked outputs are only released after the maintenance condition was terminated manually 1 Re...

Page 118: ...erased In case of a power failure all relays open The cleaning cycle is canceled The outputs linked with the sensor change to the non active condition see section 6 9 2 As soon as the power is avail a...

Page 119: ...column Confirm with OK 5 Using highlight a line for a current output Cx in the column Feature Confirm with OK The Settings of outputs and links display opens 6 Using highlight the menu item Current ou...

Page 120: ...ng variable Main variable designates the actual measured parameter of the sensor e g pH oxygen etc Adjoining variable designates an additional measured parameter e g temperature Attenuation 0 40 mA s...

Page 121: ...ing table on page 124 By activating or deactivating the Integral ti and Differential td controller part the following controller types can be configured Regulator type td s ti s P controller 0 0 with...

Page 122: ...s greater than zero the controller has a positive characteristic curve example figure 6 17 To obtain a positive characteristic curve a negative value must be entered for Xp Application example Regulat...

Page 123: ...ease of the concentration by 1 mg l causes a reduction of the output current by 1 mA If the measured con centration is 5 mg l for example 11 mA is output The highest concentration at which the control...

Page 124: ...troller Negative values result in a positive characteristic curve Imin 0 20 mA Lower current limitation Imax 0 20 mA Upper current limitation Note Spacing between Imin and Imax at least 5 mA Io 0 20 m...

Page 125: ...Behavior in case of error For linked relay outputs or current outputs you can determine the behavior of the outputs in case of errors Depending on the use of the output the behavior in case of errors...

Page 126: ...behavior defined for error Restoring the normal functioning The relay or current output automatically returns to its normal condition as soon as all errors have been eliminated and all conditions that...

Page 127: ...not use high pressure water blasters for cleaning danger of water penetra tion Also do not use aggressive cleaning agents such as alcohol organic sol vents or chemical detergents These types of cleani...

Page 128: ...Error in the measured value display The selected system language was not activated for all components Information on possible errors of IQ sensors is given in the chapter WHAT TO DO IF of the respect...

Page 129: ...new component When an IQ sensor is connected to the system the system checks whether an It is always possible to replace components and assign a substitute if the software state of the substitute com...

Page 130: ...s oper ating with the settings from the inactive dataset This mechanism ensures that the IQ sensor retains its settings and links if it was removed for maintenance or if the system was temporarily swi...

Page 131: ...ta 9 1 DIQ S 281 Dimensions DIQ S 281 CR2 figure 9 1 Dimension drawing of the DIQ S 281 dimensions in mm Front view Lateral view Rear view 144 0 144 0 52 2 68 0 11 0 16 5 115 0 70 0 45 0 72 0 137 0 13...

Page 132: ...UNIVERSAL TRANSMITTER DIQ S 281 115 0 70 0 45 0 72 0 137 0 137 0 52 2 68 0 11 0 16 5 Front view Lateral view Rear view Enclosure material Polycarbonate with 20 glass fiber Weight Approx 1 2 kg Type o...

Page 133: ...0 m above sea level Power supply Nominal voltage 100 240 VAC 10 Frequency 50 60 Hz according to DIN IEC 60038 Line power connection 2 pin N and L Line cross section of mains connection Europe 1 5 4 0...

Page 134: ...monitor Monitoring of the warning and error signals of the DIQ S 281 Proportional frequency output Proportional pulse width output Output Galvanically separated from the sensors Output current Can be...

Page 135: ...nsable operation Interference emission limits for resources of class A System lightning pro tection Extended protective characteristics as opposed to EN 61326 FCC class A Applicable norms EN 61010 1 U...

Page 136: ...t directly suitable for conduit connection Conduits have to be connected with the flexible CC Box adapters or with CC PM adapters see chapter 10 ACCESSORIES AND OPTIONS 1 1 2 2 3 3 4 4 5 5 6 6 7 7 7 p...

Page 137: ...DIQ CHV Enclosure material Polystyrene Weight Approx 0 3 kg Type of protection IP 66 not directly suitable for conduit connection Conduits have to be connected with the flexible CC Box adapters or wi...

Page 138: ...igure 9 5 Space required for wall and top hat rail mounting dimensions in mm Panel mounting PMS IQ figure 9 6 Space required for panel mounting PMS IQ dimensions in mm Switching voltage Approx 22 V Ma...

Page 139: ...l mounting and top hat rail mounting figure 9 7 Space required for wall and top hat rail mounting dimensions in mm Panel mounting PMS IQ figure 9 8 Space required for panel mounting PMS IQ dimensions...

Page 140: ...r than 10 mm EW 1 480051Y Branching module DIQ JB 472005Y Valve module DIQ CHV 472007Y Sun shield for a unit of up to two stacked DIQ modules plus docked Universal Transmitter SSH IQ 109295Y Sun shiel...

Page 141: ...rating manual of the respective component The following lists contain the message codes and the related message texts that are shown on the display Error messages and info messages are listed separate...

Page 142: ...171 Power failure occurred Check date and time and if necessary adjust them Message code Message text Message code Message text II1171 Language not available Default language German Contact service II...

Page 143: ...l data DIQ S 24 V version 133 DIQ S line power version 133 EMC characteristics 135 Entering texts 64 Error 67 F Function code 95 I Inactive dataset Sensors 129 Information 67 Initialization 53 K Keys...

Page 144: ...Time 93 Site altitude 94 SNCIQ cable 26 28 SNCIQ UG earth cable 26 28 Software status Of all components 78 Special user qualifications 12 Stack expansion backwards 22 forwards 18 Stack mounting 16 St...

Page 145: ...rning a product for service include the Product Return form with cleaning certification The form must be completely filled out for an YSI Service Center to accept the instrument for service The Produc...

Page 146: ...Contact Information DIQ S 281 146 ba76226d02 03 2023...

Page 147: ......

Page 148: ...yze and return water to the environment and we help people use water efficiently in their homes buildings factories and farms In more than 150 countries we have strong long standing relationships with...

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