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EWDR 981, Instrukcje, ELIWELL[ Pobierz całość w formacie PDF ]EWDR 981 electronic controllers for refrigeration units cod. 9IS43091 rel. 3/05 GB USER INTERFACE The user interface has a 4 LED display to indicate status and alarms and four buttons for controlling instrument status and pro- gramming. DISPLAY This is used to display the inputs, the set point, the parameters and related values, alarms, functions and the status of the device. PARAMETER PROGRAMMING MENU Access the menu by pressing the ‘set’ button for at least 5 seconds. The menu structure enables all parameter folders to be divided into two levels. All the level 1 folders can be accessed by entering the password ‘PA1’. Scroll down the level 1 folders using the ‘UP’ and ‘DOWN’ buttons. Press and release the ‘set’ button next to the selected label to access the parameters. Scroll through the labels in the folder using the ‘UP’ and ‘DOWN’ buttons, press ‘set’ to display the current value of the selected parameter, use the ‘UP’ and ‘DOWN’ buttons and set the required value by pressing ‘set’. To access the level 2 folders in the ‘Cnf’ folder, select the ‘PA2’ label, enter the password ‘PA2’ and confirm with the ‘set’ button. All the parameters that cannot be changed at level 1 are in this level. NOTE: Level 1 parameters will only be displayed if you quit the ‘parameter programming menu’ and repeat the steps for manipulation of level 1 folders. The steps to follow for manipulation of level 2 parameters are the same as those NOTE: It is strongly recommended that the instrument is switched off and on again each time parameter configuration is changed in order to prevent malfunctioning of the configuration and/or ongoing timings. DESCRIPTION OF MENU Access to both menus is controlled by the ‘set’ button. If it is pressed and immediately released, the ‘machine status menu‘ is displayed. Hold the same button down for 5 seconds to access the ‘parameter programming menu‘. When one of the two menus has been accessed, you can navigate between the level 1 folders using the ‘UP’ and ‘DOWN’ buttons. The folders are opened by pressing the ‘set’ button once. You can now scroll through the contents of each folder, modify it or use its functions. You can exit each level of both menus in three ways: using the ‘fnc’ button, if a new value is confirmed by pressing the ‘set’ button or, when the time-out has elapsed (15 seconds inactivity on the device). KEYS UP Increase in value of parameter Menu scrolling and activation of defrost function (Parameter programmable H31) DOWN Decrease in value of parameter Menu scrolling and activation of associated function (Parameter programmable H32) MACHINE STATUS MENU The ‘machine status menu’ contains the folders and basic information on the device: -AL: alarm folder -SEt: Set point setting folder -Pb1: ‘probe 1 value’ folder -Pb3: ‘probe 3 value’ folder set Access to different levels of menu Alarm display, set point and probes Access to programming of parameters fnc Exit current level of menu Confirmation of value of para- meter (Parameter programmable H33) If no alarms are present, the “SEt” label is displayed. From here, you can scroll down the other menu items using the UP’ and ‘DOWN’ buttons. Each folder can be accessed by pressing the ‘set’ button once. Values are modified using the ‘UP’ and ‘DOWN’ buttons and the ‘set’ button that confirms the selected value and takes you back to the higher level. Setting the set point Access the ‘machine status menu’. If no alarms are present, the “SEt” label is displayed. By pressing and immediately releasing the ‘set’ button, the set point value can be set using the UP’ and ‘DOWN’ buttons. Press and release the ‘set’ button again or press the ‘fnc’ button to go back to the main menu level. The set point setting folder is also closed when the time-out elapses. PASSWORD The passwords “PA1and “PA2” are used to access level 1 and level 2 parameters. To change them and assign them the desired value, access the ‘parameter programming menu’ in the “diS” label folder. SIGNAL LED The status of the external devices, functions and controllers is described by the device LEDs. LED Description Indication The password is requested: - PA1 when entering the ‘parameter programming menu’; - PA2 in the “Cnf” folder containing the level 1 parameters. reduced set point Lights up when inserted LED set point is dis- played, blinking when reduced set point is inserted compressor LED ‘on’ with LED on. Blinking for delay, protection or acti- vation blocked USING COPY CARD The Copy card function can be used to upload and download parameter maps of one or more of the same type of instrument. The accessory is connected to the device using the special TTL serial port on the instrument. The Copy card can be used for the following functions: defrost LED ‘on’ during defrost- ing. Blinking when activated manually or by digital input alarm LED ‘on’ if alarm is pre- sent. Blinking for silenced alarm decimal point ‘on’ to indicate of voltage when on stand-by and dis- play ‘off’ Alarm on If an alarm condition exists when the Machine Status menu is accessed the “ALfolder label appears. Upload (UL) : The upload function reads the instrument parameters and writes them onto the Copy card Download(dL) : The download function writes the parameter map that is on the copy card at that time onto the instrument memory. NOTE: Upload = instrument—-> Copy card Download = Copy card —> instrument The operations are performed by accessing the folder with the ‘FPr’ label and selecting the ‘UL’, ’dL’ or ‘Fr’ commands. The operation is confirmed by pressing the ‘set’ button. If the operation is successful, a “y” is displayed whereas if it is unsuccessful an “n” will be displayed. Formatting the copy card This function is necessary when using the copy card for uploading for the first time or when using the copy card on device models that are not compatible. NOTE: formatting deletes all the data on the Copy card and cannot be undone. Download from reset Once the copy card has been connected the instrument is switched on. When the lamp test is over, one of the following two labels will be displayed for 5 seconds: - dLY if the operation is successful - label DLn if operation fails The display will then go into default position (probe or set point). NOTE: after downloading, the instrument will begin to work with the new parameter map that has just been downloaded. closed. The ‘+’ sign indicates that the input is activated when the contact is open If several alarms are activated at the same time, they are displayed alternately for 2 seconds each. An error condition in the room probe leads to: - E1 code appears on display - activation of compressor as indicated by Ont and OFt - deactivation of maximum and minimum alarm controller. LIGHT CONTROLLER Controls the light relay. The function can be started in two different ways. If you press the light button the light relay is switched on if it was off and is switched off if it was on. The light status is recorded by the device as soon as the button is pressed so that when power is restored after a black-out the device can continue to operate in the same way as before the power failure. The following parameters control how the light works: MINIMUM AND MAXIMUM TEMPERATURE ALARM The alarm is regulated on the room probe. The temperature limits are defined by parameters HAL and LAL. The limits refer to the set point if parameter Att=1 and are absolute if Att=0. NOTE: If the alarms are relative, the parameter HA1 is set to positive values and LA1 to negative values. Par Description H06 Button/aux input/door switch light active when instrument off dSd Enabling light relay by door switch dLt Delay Light Relay deactivation delay Att=0 absolute Maximum temperature alarm room probe temperature ≥ HAL OFL Light switch always disables light relay OAO Alarm signal delay after disabling the digital input (door closed) Minimum temperature alarm room probe temperature ≤ LAL tdO Time out door open. Time out signal after activation of D.I. (door open) Att=1 relative Maximum temperature alarm room probe temperature ≥ Set + HAL H11 Digital output configurability/polarity 1 Minimum temperature alarm room probe temperature ≤ Set + LAL H21...H25 Digital output configurability 1...5 The configuration of these parameters controls the status of the light relay by using the digital input as well as the normal button. The parameter dSd automatically switches on the light relay when the digital input is enabled and switches it off when the digital input is disabled following the delay set by parameter dLt. Parameter H06 activates the light button and enables the relay when the door is open even when the instrument is powered but is ‘off’. The dedicated button always deactivates the light relay even if the digital input is on or during the dLt delay only if the parameter OFL=Y. ALARM WITH THRESHOLD REFERRING TO PROBE 3 An alarm is associated with probe 3 that refers to a threshold that is reset at a specified differential. By setting parameter PbA=3 probe 3 will signal a high or low temperature alarm for exceeding the set value. Signal Description AH3 High temperature alarm AL3 Low temperature alarm ADVANCED FUNCTIONS DOOR SWITCH INPUT This is a clean contact digital input with programmable polarity. The door switch input functions are controlled by the values of the following parameters: The alarm is handled in the same way as the other temperature alarms and standard signal delays are used. EXTERNAL ALARM It is set if the digital input is enabled with the delay specified by parameter dAd and remains enabled until the next time the digital input is deactivated. The alarm consists of an alarm LED that remains on, activation of a buzzer and deactivation of all the device loads (if specified by the EAL parameter). If an external alarm is present the EA label is displayed in the AL folder. DIAGNOSTICS Par Description dOd Digital input switches off loads PROBE ALARMS When one of the probes is outside the nominal operating range or the probe is open or has shorted, an alarm is generated if at least one of these conditions persists for at least 10 seconds. If at least one of these 3 alarms is signalled the alarm LED and relay are enabled. When activated code E1 appears on the display. dAd D.I. activation delay OAO Alarm signal delay after dis- disabling the digital input (door closed) tdO Time out door open. Time out signal after activation of D.I. (door open) H11 Digital output configurability/polarity 1 H21...H25 Digital output configurability 1...5 Parameter H11 is used to configure the door switch input with values between -8 and +8. Positive and negative values are present in order to select the polarity assigned to the input and: NOTE: the sign “-” indicates that the input is activated when the contact is Signal Description EA External alarm It is reset the next time the digital input is deactivated and the buzzer can be manually silenced. Signal Description E1 Faulty room probe E3 Faulty display probe EWDR 981 2/8 OPEN DOOR ALARM This alarm is generated when the door is open for longer than the value specified in parameter tdO. The door open alarm is signalled in the alarm folder (AL) and the LED and alarm relay are switched on. The OPd label is also displayed. CONDITIONS OF USE ELECTRICAL CONNECTIONS PERMITTED USE For safety reasons the instrument must be installed and used in accordance with the instructions supplied. Users must not be able to access parts with dangerous voltage levels under nor- mal operating conditions. The device must be suitably protected from water and dust depending on the specific application and only be accessible using special tools (except for the front key- pad). The device is ideally suited for house- hold use and/or similar use in the refrig- eration sector and has been tested with regard to safety in accordance with the European harmonized reference stan- dards. It is classified as follows: • as an automatic electronic control device to be independently mounted as regards its construction; • as a 1 B type operated control device as regards its automatic operating fea- tures; • as a Class A device as regards the cate- gory and structure of the software. Warning! Always switch off machine before working on electrical connections. The instrument has screw terminal blocks for connecting cables with a maximum diameter of 2.5 mm 2 (only one conductor per terminal block for power connections): for terminal capacity, see the label on the instrument. The relay outputs are voltage free. Do not exceed the maximum current allowed. For higher loads, use a suitable contactor. Make sure that the power voltage complies with the device voltage. Probes have no connection polarity and can be extended using an ordinary bipolar cable (note that if probes are extended this affects the electromagnetic compatibility (EMC) of the instrument: special care must be used when wiring). Signal Description OPd Open door alarm The relay can be deactivated by pressing the silencing button. The LED continues to flash intermittently and the OPd label remains in the alarm menu until the door is closed. MECHANICAL ASSEMBLY The EWDR 981 is designed to be wall- mounted (removable brackets) or mounted on DIN rail (Omega 3). The unit operates correctly with an ambient temperature range of between -5 and 55 °C. Units must not be installed in excessively humid and/or dirty locations. The TTL serial cable must be kept separate from the power cables. TECHNICAL DATA Casing: plastic 4 Din modules Dimensions: front 70x85 mm, depth 61mm. Mounting: on DIN rail (Omega 3) or wall-mounted. Connections: on screw terminal block for ≤ 2.5mm 2 conductors (only one conductor per terminal block for power connections) Operating temperature: -5...55°C. Storage temperature: -30...85°C. Operating and storage ambient humidity: 10...90 % RH (non-condensing). Display: 3 digits + sign Analogue inputs: 2 NTC/PTC inputs (parameter configurable) Digital inputs: 2 voltage-free parameter- configurable digital inputs. Serial: TTL for Copy Card Digital outputs: 1 on relay: 16A 1hp 250V SPDT; Configurable 12V UNPERMITTED USE The use of the unit for applications other than those described above is for- bidden. It should be noted that the relay contacts supplied with the device are functional and therefore exposed to potential faults. Any protection devices required to comply with product requirements or dictated by common sense due to obvious safety reasons should be installed externally. RESPONSIBILITY AND RESIDUAL RISKS Eliwell shall not be liable for any damages deriving from: - installation/use other than that prescribed and, in particular, which does not comply with the safety standards specified in the regulations and/or those given herein; - use on boards which do not guarantee proper protection against electric shock, water or dust when assembled; - use on boards which allow dangerous parts to be accessed without the use of tools; - tampering with and/or alteration of the product; - installation/use on boards that do not comply with the standards and regulations in force. /24mA output Resolution: 1 or 0.1°C. Accuracy: better than 0.5% of bottom scale +1 digit Consumption: 5VA Power supply: 230Va c EWDR 981 3/8 PAR. DESCRIPTION RANGE DEFAULT VALUE LEVEL U.M. SEt Set point with range falling between the minimum LSE set point and the maximum HSE set point. The set point value is in the machine status menu menu LSE...HSE 0.0 °C/°F diF When the compressor stops when it reaches the set point value, it restarts at a value corresponding to the set point plus the value of the differential It must not be 0 0.1...30.0 2.0 1-2 °C/°F HSE Maximum set point value LSE...302 50.0 1-2 °C/°F LSE Minimum set point value -58.0...HSE -50.0 1-2 °C/°F OSP Offset point. Value to be added to set point if reduced set point is activated Economy function). -30.0...30.0 0 2 °C/°F Cit Minimum compressor ON time. Minimum time for activating a compressor before deacti vation Not active if=0 0...250 0 2 min CAt Maximum compressor ON time. Maximum time for activating a compressor before deacti vation Not active if=0 0...250 0 2 min Ont (1) Compressor activation time if probe is faulty. If set to 1 with OFt=0 the compressor always remains on whereas if OFt>0 it operates in duty cycle mode (see Duty Cycle diagram) 0...250 0 1-2 min OFt (1) Compressor shut-down time if probe is faulty. If set to 1 with Ont=0 the compressor always remains off whereas if OFt>0 it operates in duty cycle mode (see Duty Cycle diagram) 0...250 1 1-2 min dOn Delay in activating compressor relay after start-up 0...250 0 1-2 sec dOF Delay after shut-down; between compressor relay shut-down and subsequentstart-up the specified time must elapse. 0...250 0 1-2 min dbi Delay between switch-ons; the specified time must elapse between two subsequent switch-ons 0...250 0 1-2 min OdO Delay in activating outputs after start-up of instru- ment or after a power failure. Not active if=0 0...250 0 1-2 min dty Type of defrost. 0 = electrical defrosting; 1 = cycle reversing defrosting (hot gas); 2 = Free mode defrosting (compressor disabled). 0/1/2 0 1-2 num dit Period of time elapsing between the start of two defrosts 0=function disabled 0...250 6h 1-2 hours/min/sec dt1 Unit of measurement for defrost times (par. dit) 0/1/2 0 2 num 0=”dit” expressed in hours 1=”dit” expressed in minutes 2=”dit” expressed in seconds dt2 Unit of measurement for duration of defrosting (dEt parameter) 0= “dEt” parameter expressed in hours 1= “dEt” parameter expressed in minutes 2= “dEt” parameter expressed in seconds 0/1/2 1 2 num dCt Selection of defrosting time count mode. 0=compressor operating hours DIGIFROST® method). Defrosting active only if compressor is on. 1 = device operating hours; defrost counting is always active when the machine is on 2=compressor stop Each time the compressor stops a defrosting cycle defrost cycle is performed according to par. dtY 3=disabled 0/1/2/3 1 1-2 flag dOH Delay between start of first defrosting operation and start-up of instrument. 0...59 0 1-2 min dEt Defrosting time-out; determines maximum dura- tion of defrosting. 1...250 30min 1-2 min/sec NOTE: At level 1 the folders will only display all the level 1 parameters. At level 2 the folders will only display all the level 2 parameters. The symbol 1-2 indicates the parameters that are displayed at both menu levels EWDR 981 4/8 PAR. DESCRIPTION RANGE DEFAULT VALUE* LEVEL** U.M. dPO Determines when instrument starts up if the defrosting cycle must be activated (if the temperature on the evaporator allows this) y=defrosting activated at start-up n=defrosting not activated at start-up n/y n 1-2 flag tcd minimum time for each compressor state before defrosting “Ontime if >0; “Offtime if >0 -31...31 0 2 min Cod Compressor “Off” time before defrost cycle. The compressor is not turned on if a defrost cycle is expected in the time indicated by the parameter. 0=Function excluded 0...60 0 2 min dt Dripping time 0...250 0 1-2 min Att Determines if “LAL” and “HAL” are expressed as absolute values or as a differential related to the set point 0=absolute value 1=value related to set point 0/1 0 2 flag AFd Alarm differential 1.0...50.0 2.0 1-2 °C/°F HAL (2) Maximum alarm. Temperature limit (whose absolute or relative value status is regulated by “Att”) above which the alarm is activated. LAL...150.0 50.0 1-2 °C/°F LAL (2) Minimum alarm. Temperature limit (whose absolute or relative value status is regulated by “Att”) below which the alarm is activated. -50.0...HAL -50.0 1-2 °C/°F PAO (3) Alarm exclusion time after start-up of instrument following a power failure 0...10 0 1-2 hours dAO Alarm exclusion time after defrosting 0...999 0 1-2 min OAO High and low temperature alarm delay after disabling digital input (door closed) 0...10 0 2 hours tdO Time out after alarm signal when digital input is 0...250 0 2 min disabled (door open) tAO (3) Temperature alarm delay time 0...250 0 1-2 min EAL External alarm to lock controllers n=does not lock, y=locks n/y n 2 flag AOP Polarity of alarm output: 0 = alarm active and output disabled; 1 = alarm active and output enabled 0/1 1 2 flag PbA Configuration of temperature alarm on probe 1 and/or 3: 0=on probe 1 (thermostat control) 1=on probe 3 (display) 2=on probe 1 and 3 (thermostat control and display) 3=on probe 1 and 3 (thermostat control and display) on external threshold 0/1/2/3 0 2 num SA3 Probe 3 alarm set point -50.0...150.0 50 2 °C/°F dA3 Probe 3 alarm differential -30.0...30.0 2.0 2 °C/°F dSd Light relay enable from door switch. n = door open, light does not turn on; y = door open, light turns on (if it was off) flag n/y y 2 dLt Light relay disabling delay after closing door if “dSd”=y 0...31 0 2 min OFL Light relay disabled even if disabling delay “dLt” is active n/y n 2 flag dOd Digital input switches off loads n/y n 2 flag dAd Delay in activating digital input 0...255 0 2 min NOTE: At level 1 the folders will only display all the level 1 parameters. At level 2 the folders will only display all the level 2 parameters. The symbol 1-2 indicates the parameters that are displayed at both menu levels EWDR 981 5/8 [ Pobierz całość w formacie PDF ] |
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