Инструкция на Микропанель управления чиллерами York Millennium с поршневыми компрессорами

Текст инструкции

1. Стр. 1 CHILLER CONTROL PANEL

   PROGRAMMING AND DATA ACCESS STATUS DISPLAY SETPOINTS CLOCK DISPLAY INFORMATION KEYS 00407VIP PRINT ON / OFF PROGRAM & SETUP KEY DISPLAY AND STATUS INFORMATION KEYS PROGRAM & SETUP KEYS Status Key - see Section 2 Entry Keys - see Section 5 This key provides a display of the current operational and/or…

2. Стр. 2 1. INTRODUCTION & PHYSICAL DESCRIPTION

   00407VIP 1.1 GENERAL The YORK Millennium Reciprocating Chiller Control Panel is a microprocessor-based control system fitted to YCAR liquid chillers. It is capable of multi-refrigerant system control to maintain chilled liquid temperature within programmed limits and to provide safety control of the…

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   ducers, and sensors around the chiller, are either connected directly to the Microprocessor Board or are connected to the I/O Expansion Board and multiplexed before being sent to the Microprocessor Board. The Microprocessor Board circuitry multiplexes all of these analog inputs, digitizes them, and…

4. Стр. 4 The common side of all relays on the Relay Output Board

   is connected to +12VDC REG. The open collector outputs of the Microprocessor Board energize the DC relays or triacs by pulling the other side of the relay coil to 0VDC. When not energized, both sides of the relay coils or triacs will be at +12VDC potential. 1.6 CIRCUIT BREAKERS Three Circuit…

5. Стр. 5 SIDE VIEW

   TOP VIEW 29119A 29121A DISPLAY SWITCH PUSHED TO LEFT INDICATES “ON” ON 29120A SIDE VIEW FIG. 36 – MOTOR PROTECTOR 112 YORK INTERNATIONAL

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   The Motor Protector Module is equipped with a hexadecimal display to use as a guide to determine the exact nature of a shutdown. See page 18 for details. Whenever the Motor Protector Module senses a fault, internal contacts will open and shut the system down. These contacts are wired in series with…

7. Стр. 7 To maintain a given offset, the contact closure signal

   must be repeated every 30 seconds - 30 minutes. The refresh is not accepted sooner than 30 seconds from the end of the last PWM signal, but it must be refreshed before 30 minutes has elapsed. After 30 minutes, if no refresh is provided, the setpoint will change back to its original value. To…

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   MICROPROCESSOR BOARD LAYOUT 26001A ITEM DESIGNATION J18 RTC (U13) EPROM 4 5 S1 S2 to S5 DESCRIPTION Clock Enable/Disable Jump Contact Real Time Clock and Battery Backup I.C. Microprocessor I.C. (label shows version) NOTE : Dimple is positioned at top edge Dip Switch Set (8 switches) System Switches…

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   LOGIC SECTION LAYOUT Hz Models: ITEM 00247VIP DESCRIPTION Microprocessor Board Back of Keypad Back of Display I/O Expansion Board #1 Power Supply Board Relay Output Board #1 Relay Output Board #2 Flow Switch & Customer Connection Terminals Circuit Breakers FIG. 38 – LOGIC SECTION LAYOUT 116 YORK…

10. Стр. 10 1.13 ANTI-RECYCLE TIMER

    1.17 EVAPORATOR HEATER CONTROL The programmable Anti-Recycle Timer allows the user to select the compressor anti-recycle time to best suit their needs. Motor heating is a result of inrush current when the motor is started. This heat must be dissipated before another start takes place or motor damage…

11. Стр. 11 “Recycling pumpdown” is initiated while a compressor

    is off, able to run, and is in a “No Cooling Load” state. It can be initiated 45 minutes after either of the following two conditions are met: 1. Sat Suction Temperature > LCHWT - 1.5°F (0.8°C) – and – Ambient Temp > LCHWT - 6°F (3.3°C) 2. The compressor has been idle for 2 hours and Suction…

12. Стр. 12 1.21 LEAD / LAG COMPRESSOR SELECTION

    The chiller may be set up for AUTO or MANUAL Lead / Lag. This is accomplished by programming the option under the Program Key. Details for programming the Manual/Auto Lead/Lag Selection are discussed in Program Key Section 9, page 152. When AUTO Lead/Lag is utilized, the micro attempts to balance…

13. Стр. 13 2. STATUS KEY: GENERAL STATUS MESSAGES & FAULT WARNINGS

    STATUS KEY 00407VIP 2.1 GENERAL 2.2 GENERAL STATUS MESSAGES Pressing the Status key displays the current chiller or individual system operational status. The messages displayed include running status, cooling demand, fault status, external cycling device status, load limiting, and antirecycle timer…

14. Стр. 14 Compressors Running

15. Стр. 15 Normally, this key is only used for servicing when the

    chiller is required to run, but the daily schedule is in an OFF period. This key avoids the need to reprogram the daily schedule. Once activated, Manual Override automatically disables itself after 30 minutes. Additional information regarding Manual Override is outlined in Section 9, page 147. 2.3…

16. Стр. 16 iting” message if a limit is exceeded. To prevent the

    controls from ever requiring a forced unload, the micro anticipatory control will prevent a system from loading when a limit exceeds 90% of the programmed unload point. No display will indicate anticipatory loading prevention. Loading will resume when the temperature/pressure limit drops below 90%…

17. Стр. 17 Low Ambient Temperature Cutout

    L OW U N I T F A U L T AM B I E N T T E M P The Low Ambient Temperature Safety protects the chiller from running in very low temperatures which could cause damage due to low system pressures. This feature is programmable and can also be used to shut down the chiller at a temperature where continued…

18. Стр. 18 Low Oil Temperature Inhibit

    S Y S S Y S 1 2 L OW L OW O I L O I L High Discharge Pressure Cutout: T E M P T E M P The Low Oil Temperature Inhibit prevents the compressor from starting if its oil temperature is too low due to heater failure or insufficient time for the heater to remove refrigerant from the oil. This prevents…

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    frigerant flow. A number of transient timer features prevent nuisance trips during start-up, compressor loading, etc. The Low Suction Pressure Safety is programmable (see Section 9 [8.2] / Page 144, Low Suction Pressure Cutout for more details). The suction pressure cut-out is ignored for the first…

20. Стр. 20 Low Motor Current Cutout / Motor Protector (Hi

    Motor Winding Temp Cutout) / Mechanical High Pressure Cutout / External Motor Overload: S Y S S Y S # # L OW L OW C U R R / M P / H P C U R R / M P / H P The Low Motor Current Safety prevents a compressor motor running with less current than would normally be expected. This may result from loss of…

21. Стр. 21 3. DISPLAY KEYS & OPTION SWITCHES

    DISPLAY KEYS AND OPTION SWITCHES 00407VIP 3.1 GENERAL 3.2 CHILLED LIQUID TEMPS KEY The Display keys provide direct access to retrieve commonly required data about the operation of the chiller. This is particularly useful during commissioning, monitoring the operation of the chiller, diagnosing…

22. Стр. 22 S Y S

23. Стр. 23 H R S

    S T R 1 = 1 = , , 2 = = H R S S T R 3 = 3 = , , 4 = = Display Limits : Maximum run hours 99,999 Maximum starts 99,999 Values roll over to zero, if the maximum limit is exceeded. These counters are zeroed at the factory, but may indicate run time and number of starts logged during factory testing…

24. Стр. 24 SUMMARY OF SETTINGS

    Dip Switch Physical Location and Setting: The following table provides a summary of Modes (displayed messages) which can be selected using the Open and Closed positions for each of the eight SW1 Dip Switches. SWITCH SWITCH “OPEN” SETTING Water Cooling SWITCH “CLOSED” SETTING Brine Cooling 2 Standard…

25. Стр. 25 4. PRINT KEYS

    PRINT KEYS 00407VIP 4.1 GENERAL The Print keys provide access to two sets of information either locally on the panel display or, if an optional printer is connected, remotely as hard copy printouts. The Operating Data (Oper Data) key provides a realtime list of system operating data and programmed…

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    T E M P E R R O R R A T E - 0 0 . 5 ° F 0 . 9 ° F / M The upper message gives the difference (error) between actual leaving chilled liquid temperature and the programmed Target temperature. The lower message gives the rate of change of the chilled liquid leaving temperature in degrees per minute. A…

27. Стр. 27 4.4 OPERATING DATA - REMOTE PRINTOUT

    The follow text shows a typical example printout obtained by pressing the Operating Data (OPER DATA) key with an optional printer attached. In this case an example is shown for a YCAR 2-system Chiller. YCAR 3-system models and YCAR 4-system models provide similar printouts for the appropriate number…

28. Стр. 28 If a remote printer is connected, pressing the History

29. Стр. 30 S Y S

30. Стр. 31 SAMPLE PRINTOUT OF FAULT HISTORY DATA

    YORK INTERNATIONAL CORPORATION MILLENNIUM SCREW CHILLER SAFETY SHUTDOWN NUMBER 1 SHUTDOWN @ 3:56 PM 28 AUG 00 SYS 1 HIGH DSCH PRESS SHUTDOWN SYS 2 NO FAULTS OPTIONS CHILLED LIQUID AMBIENT CONTROL REFRIGERANT TYPE WATER STANDARD R-22 PROGRAM VALUES DSCH PRESS CUTOUT DSCH PRESS UNLOAD SUCT PRESS…

31. Стр. 32 5. ENTRY KEYS

    ENTRY KEYS 00407VIP 5.1 GENERAL The Entry keys allow the user to change numerical values programmed in as chiller setpoints, cutouts, clock, etc. 5.2 NUMERICAL KEYPAD The Numerical keypad provides all keys necessary to program numerical values into the micropanel. The " * " key is used to designate…

32. Стр. 33 6. SETPOINTS KEYS & CHILLED LIQUID CONTROL

    SETPOINTS KEYS 00407VIP 6.1 GENERAL The microprocessor monitors leaving chilled liquid temperature and adjusts the chiller cooling capacity to maintain this temperature within a programmed range. The capacity is controlled by switching compressors on or off, by varying the number of cylinders loaded…

33. Стр. 34 6.3 LOCAL COOLING SETPOINTS KEY

    6.4 REMOTE COOLING SETPOINTS KEY The Local Cooling Setpoints key is used to program the required Leaving Chilled Liquid control temperatures for the application. When the key is pressed, the following message will be displayed: S E T P O I N T R A N G E = = 4 4 . 0 + / 2 . 0 ° F ° F Key in the…

34. Стр. 35 perature within the control range. A fuzzy logic loading/

    unloading control algorithm allows the micro additional anticipatory loading and unloading capabilities within the control range, based on the rate of chilled liquid temperature change and the approach of safety thresholds. Control by “return” chilled liquid temperature is not an option on this…

35. Стр. 36 the Load Timer has counted down to “0”. The micro

    will always pick the compressor with the lowest load stage as long as it is available. In the event that both compressors are on the same stage, priority will be chosen according to lead/lag assignments. Loading is once again permitted to occur when system motor current or discharge pressure falls…

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    “FUZZY LOGIC” “UNLOADING” ANTICIPATORY CONTROL The fuzzy logic has the capability of decision-making based on the rate of change of chilled liquid temperature. When the chilled liquid is within the control range, the fuzzy logic may unload the chiller, even though temperature is within the desired…

37. Стр. 38 7. CLOCK KEYS

    CLOCK KEY 00407VIP 7.1 GENERAL The microprocessor features a continuously running internal Clock and calendar and can display actual time as well as the day of the week and the date. An automatic schedule feature is provided for starting and stopping the chiller on individual days of the week…

38. Стр. 39 The displays for each day are scrolled through by repetitively pressing the SET SCHEDULE/HOLIDAY

    key. To reprogram any of the daily schedules, key in the new Start time; then, if necessary, change the associated AM/PM by pressing the ! or" keys. Press the ENTER key to enter the new start time and advance to the stop time. Next, key in the Stop Time and the AM/PM if necessary. Now press the…

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    change is required, press Cancel. This will clear all programmed (*) “Holidays”. 7.4 MANUAL OVERRIDE KEY When the Manual Override key is pressed, the Daily Schedule programmed into the chiller is ignored and the chiller will start up when water temperature is above the high limit of the Control…

40. Стр. 41 8. PROGRAM KEY

    PROGRAM KEY 00407VIP 8.1 GENERAL The Program key is used to program 12 system operating parameters, including cutout points for safeties, anticipatory unload points to avoid faults, and anti-recycle timer duration. When the Program key is pressed, the following message will be displayed to indicate…

41. Стр. 42 8.2 PROGRAM KEY USER PROGRAMMABLE VALUES

    values between 200 - 399 PSIG (14 - 28 bar). This programmable value is password protected. High Discharge Pressure Cut-Out: To program the Discharge Pressure Unload, key in the required setting and press the Enter key to store the value into memory and scroll to the next display. D I S C H A R G E…

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    This cutout value increases with time, until after 30 seconds, it equals the programmed cutout value. If the suction pressure rises to above the programmed cutout value during the 30-second time period, the timer will be reset. If the suction pressure falls below the ramped cutout, the system will…

43. Стр. 44 Low Leaving Liquid Temperature Cut-Out

    L E A V I N G L I Q U I D T E M P C U T O U T = 3 6 . 0 ° F The Low Leaving Liquid Temperature Cutout protects the evaporator from damage due to ice build up caused by operation below the chilled liquid freezing point. If the leaving chilled liquid temperature (water or glycol) drops below the…

44. Стр. 45 The micro will accept a range of programmable values

45. Стр. 46 8.3 PROGRAMMING "DEFAULT" VALUES

    Programmable values may be individually programmed at start-up or any time thereafter. For ease of programming, once the type of refrigerant is programmed in under the Program key, a "defaults password" may be programmed to automatically program default values into memory. This will preset all…

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