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CSZ EZT-550 Instruction Manual

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EZT-550 Controller
Instruction Manual
56121 REV B
8-05

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Summary of Contents for CSZ EZT-550

  • Page 1 EZT-550 Controller Instruction Manual 56121 REV B 8-05...

  • Page 2: Table Of Contents

    EZT-550 Controller Manual TABLE OF CONTENTS Overview ..........................4 1.1 Menu Bar Function Tree ....................... 4 1.2 Touch Screen Interface ......................6 Monitoring ..........................7 2.1 Chamber Monitor ........................7 2.2 Chamber Detail........................8 2.3 Trend Graph ......................... 9 2.4 Graphic Monitor ........................10 2.5 System Alarms........................
  • Page 3 EZT-550 Controller Manual Communications........................53 9.1 Connecting a Computer to the EZT-550................53 9.1.1 RS-232 Serial Connection ..................53 9.2 Maintenance Protocol ......................54 9.2.1 Write Data Command .................... 55 9.2.2 Read Data Command .................... 57 9.2.3 BCC Block Check Calculation ................58 9.3 EZT-550 Operands ......................
  • Page 4 EZT-550 Controller Manual Introduction This manual has been tailored to match the specific features and options provided on the ZP(H) Series chambers. Do not use this manual in an attempt to operate or maintain any other model chamber. It is highly recommended that the end user read this manual thoroughly and understand all aspects of the chamber’s...

  • Page 5: Overview

    EZT-550 Controller Manual 1. Overview The EZT-550 Controller is a not just another graphic interface for operating and monitoring the chamber. It is an intelligent device that monitors and protects the chamber from adverse operating conditions. It does this without the need for user intervention or knowledge on system operation.
  • Page 6 EZT-550 Controller Manual Setup: Chamber Views: Chamber Monitor Setup: Control Tuning DUT Settings Event Tagnames Power Recovery Timer Setup Defrost Settings System Maintenance System Maintenance Views: Chamber Setup Setup: Degrees C/F Maintenance Counters Password Entry Setpoint Limits Set Date/Time Startup Configuration...

  • Page 7: Touch Screen Interface

    EZT-550 Controller Manual 1.2 Touch Screen Interface The EZT-550 display is divided into three main sections; the menu bar, main display area and detail window. Menu Bar Main Display Area Detail Window Menu Bar: The menu bar is used to navigate through the various monitoring and control screens.

  • Page 8: Monitoring

    EZT-550 Controller Manual 2. Monitoring The chamber monitoring screens provide various means of verifying chamber operation and performance. The displays are accessed from the main menu under “Views”. 2.1 Chamber Monitor Process Variables Setpoints The monitor screen displays the current setpoints and process variables. The setpoints can be modified from this screen by touching the setpoint field box.

  • Page 9: Chamber Detail

    EZT-550 Controller Manual 2.2 Chamber Detail Percent Output Event Table Scroll bar The chamber detail screen includes additional operating parameters beyond the setpoint and process variables shown on the monitor screen. The chamber events can be activated or de-activated from this screen and their current status can be monitored.

  • Page 10: Trend Graph

    EZT-550 Controller Manual 2.3 Trend Graph The trend graph displays the setpoint and process variable history over a period of time. The vertical axis determines the range of displayed data while the horizontal axis determines the sample period. The maximum time period allowable is 4 hours.

  • Page 11: Graphic Monitor

    EZT-550 Controller Manual Trend Points To adjust what items are shown on the trend, select/deselect the desired items by touching the check box next to each process and setpoint variable. Once all selections are made, press the “Done” or “Cancel” button to return to the trend screen. Any adjustments made when the “Cancel”...

  • Page 12: Profile Status View

    EZT-550 Controller Manual The alarm screen displays any current and previously silenced alarms according to time and date of occurrence. When an alarm occurs, the screen background will turn red to notify the user of a new alarm. Once the alarm is silenced, the screen background will revert to the standard blue background.
  • Page 13 EZT-550 Controller Manual Step Time Remaining Displays the time left within the current step in hours and minutes. A time of 1 minute indicates a time remaining of less than 1 minute Profile Time Remaining Displays the time left within the profile in hours and minutes. This includes jump steps and recycles.

  • Page 14: Single Setpoint Operation

    EZT-550 Controller Manual 3. Single Setpoint Operation This chapter explains how to operate the chamber in its basic operating mode. 3.1 Single Setpoint Adjustment To adjust the setpoint: Select either the Chamber Monitor or Chamber Detail screen under the Views menu.

  • Page 15: Event Control (Chamber On/Off)

    To prevent malfunction or damage to the chamber, the EZT-550 control system automatically disables the humidity system components when outside of the valid operating temperature range. The event will remain on;...

  • Page 16: Chamber Options

    When this option is installed on the chamber, turn the Aux Cooling event on. When the boost is required during a pulldown, the EZT-550 will turn on the boost cooling solenoids and inject LN2 or CO2, into the chamber to drop the temperature as fast as possible.
  • Page 17 Customer Events The EZT-550 controller has the ability to control up to 12 event output relays. These outputs can be manually turned on and off, and they can also be controlled programmatically through a running profile. You can use them to start and stop devices under test within the chamber, turn signal beacon lights on and off to indicate steps within the test cycle, etc.

  • Page 18: Profile Operation

    EZT-550 Controller Manual 4. Profile Operation This chapter explains how to operate profiles. To access profile utilities, select the Edit/Monitor option under the Profile menu heading. 4.1 Profile Create/Edit Profiles are created/edited from the Profile Entry screen located under the Profile menu selection. The following instructions describe the steps involved for programming profiles.
  • Page 19 EZT-550 Controller Manual From the Edit menu, select New Profile and select “Yes” to create a new profile. Edit Menu Options New Profile: Clears any existing profile entry data so that a new profile can be entered. Insert Step: Inserts a step into the current profile at the current step number.
  • Page 20 EZT-550 Controller Manual Input the required step data by touching the field entry boxes. Once touched, the keypad entry screen will pop-up and allow the desired value to be entered. Total Steps The total steps entry is common to all steps of the profile. It specifies the total length of the profile. The profile can be from 1 to 99 steps in length.
  • Page 21 EZT-550 Controller Manual Once you have completed entering all step data for the profile, select Save Profile from the edit menu to save the profile. On the save profile window, touch the Filename entry field. An alphanumeric keypad will appear. Enter in the desired filename for the profile and press Done.

  • Page 22: Guaranteed Soak Limits

    EZT-550 Controller Manual 4.2 Guaranteed Soak Limits To access the guaranteed soak limits, select Guaranteed Soak from the profile Views menu. The soak limits screen allows you to set the control tolerance for soak steps when in profile operation. When the process variables differ from the setpoints by more than the soak limits, the profile will go into hold and the timer will stop until the process variables re-enter the soak bands.

  • Page 23: Plot Profile

    To plot the profile, select Plot Profile from the Views menu under Profiles. Press the Plot button on the upper right of the screen. The EZT-550 will then generate a graphical representation of your profile.

  • Page 24: Start/Stop Profile

    EZT-550 Controller Manual 4.4 Start/Stop Profile To start a profile, one must be selected. The selected profile is shown at the bottom of the screen. To start the profile, select “run” from the Run menu. A pop-up window will appear prompting you to enter the step number for which the profile is to start on. The default is step 1.

  • Page 25: Hold/Resume A Profile

    EZT-550 Controller Manual 4.4.1 Hold/Resume a Profile At any time during the operation of a profile, the profile can be put into hold. This stops the profile timers; however, it allows the chamber to maintain operation under the current step settings at the time the profile was put into hold.

  • Page 26: Chamber Setup

    EZT-550 Controller Manual 5. Chamber Setup This section covers the use of extended controller features that enhance the functionality of your chamber. To gain access to the chamber setup options, select Chamber from the Setup menu. 5.1 Control Tuning The control tuning parameters are used to adjust the chamber’s output responses for heating, cooling, humidification and dehumidification.
  • Page 27 EZT-550 Controller Manual PB (Proportional Band) The proportional band sets the amount of gain applied to the output based on the difference between the process variable and setpoint. The proportional band entry is a percentage of the input range. For example, if the input range is 0 to 100 degrees (100 total), a proportional band of 2% is equal to 2 degrees.

  • Page 28: How To Adjust Tuning Parameters

    EZT-550 Controller Manual 5.1.1 How to Adjust Tuning Parameters Should you have an application where the standard factory parameters do not provide acceptable control, the following guidelines will assist you in adjusting the PID settings for improved control. Note: When making changes to the PID parameters, it is necessary to give the system enough time for the new settings to take affect.

  • Page 29: Device Under Test (Dut)

    EZT-550 Controller Manual 5.2 Device Under Test (DUT) The device under test settings provide product protection for your equipment. The high and low limit fields set the maximum and minimum temperature that the product is allowed to experience. If the temperature of the product goes above or below the preset values, the chamber will shut down and the audible alarm will sound.

  • Page 30: Event Tag Names

    The names of events can be changed to describe what function they perform. Certain events are predefined by CSZ for use with chamber systems. However, the customer events are specific to your use and therefore can be changed to describe their function. To alter event names, select Event TagNames from the Setup menu.

  • Page 31: Power Recovery

    EZT-550 Controller Manual 5.4 Power Recovery The power recovery screen allows you to select how the chamber is to respond to a power outage once the power is restored. To adjust the recovery action, select Power Recovery from the Setup menu.

  • Page 32: Timer Setup

    EZT-550 Controller Manual 5.5 Timer Setup The timer function allows you to program your chamber to start and stop automatically at predetermined times. The timer can be set to initiate a profile or run the chamber at steady state conditions. To access the timer, select Timer Setup from the Setup menu.
  • Page 33 EZT-550 Controller Manual Timer Interval The timer interval specifies when the timer is to perform the specific function selected via the timer type. Run Once: Starts/Stops the chamber at the specified time/date. Day-by-Day: Starts/Stops the chamber at the specified times on multiple specified days. When selected, the days to operate are chosen by checking the appropriate check box next to each day the timer is to operate.

  • Page 34: Defrost Settings

    EZT-550 Controller Manual Set the start and stop times and dates for the period in which the chamber is to operate. Start/End (H:M) Start and stop times for the timer in hours and minutes. Note that he hours are expressed in military time, i.e., 00-24 hours.

  • Page 35: Datalogging

    Logging On/Off When logging is on, the EZT-550 continuously logs data around the clock. The data is stored to files named with the date/time that the file was created. Thus, at midnight each day, a new file is created with that day’s date and time at which it was started.

  • Page 36: View Log File

    EZT-550 Controller Manual Log Only During Profile Run When the log during profile run is selected, the data logging only operates when a profile is running. This makes it easy to determine the start and end of a profile from within a log file. Note that a new log file is still created each day;...
  • Page 37 EZT-550 Controller Manual Touch the desired file name in the data files window and touch the Open button. Select History Plot Time Setup from the Datalogging menu to configure the time period for the trend prior to plotting. StartPlot/EndPlot Specifies the time in hours and minutes for the start and stop of the plot. This allows sections of the file to be viewed for “zooming in”...
  • Page 38 Select the desired point and color for the point via the drop down selection boxes and press the Add Point button. Once the setup is complete, select Plot History Data from the Datlogging menu. The EZT-550 will plot the data according to the previously selected setup. This may take up to 10 seconds depending on plot size.

  • Page 39: Deleting Log Files

    EZT-550 Controller Manual 6.2.1 Deleting Log Files Data files can be deleted one-at-a-time by selecting “Delete Data File” from the Datalogging menu. The previously opened data file is then deleted from the memory stick. Note, to delete more than one file, each file...

  • Page 40: System Maintenance

    EZT-550 Controller Manual 7. System Maintenance System maintenance options are available from the Chamber Setup menu. To access system maintenance, select System Maintenance from the chamber setup menu. Note: Prior to entering system maintenance, all automatic chamber operations must be stopped. This includes, data logging, profiles and timer operation.

  • Page 41: Set Date/Time

    EZT-550 Controller Manual 7.1 Set Date/Time The date and time can be adjusted by selecting Set Date/Time from the maintenance setup menu. The current date and time will be displayed in the field entry windows. To make adjustments, touch the desired field entry box. The pop-up keypad will appear allowing a new value to be entered.

  • Page 42: Level 1 (User) Security Options

    (See Appendix A of this manual for your passcode) 7.2.1 Degrees C/F Selection The EZT-550 can display temperatures in either degrees C or F. To change the units, select Degrees C/F from the setup menu. Press the appropriate button to select the desired units. A message box will appear to acknowledge the units change.

  • Page 43: Maintenance Counters

    EZT-550 Controller Manual CAUTION When changing display units, profile setpoints will not be converted between units. Separate profiles are required for each temperature range. Equipment damage may result if profiles of alternate units are used. 7.2.2 Maintenance Counters The maintenance counters provide service interval alerts for chamber components. When a component exceeds its service interval, a notification alarm is generated.

  • Page 44: Calibration

    EZT-550 Controller Manual 7.2.3 Calibration The calibration menu provides access to the analog input and output ranges for calibration. Select the desired input or output from the calibration menu in order to view its settings. 7.2.3.1 Analog Input Calibration There are up to 3 analog inputs used on the ZP(H) series chamber. Note that analog input 4 is shown; however, it is not available for use and its settings have no affect on the operation of the chamber.
  • Page 45 EZT-550 Controller Manual How to Calibrate Analog Inputs 1 and 2 (Air and DUT Temperature) Select Analog Input 1 or Analog Input 2 from the Calibration menu. The calibration window for the input will appear showing the minimum and maximum range, and the current value of the input.
  • Page 46 EZT-550 Controller Manual...
  • Page 47 EZT-550 Controller Manual Using the calibration source, input the desired calibration minimum and maximum temperature(s). Allow the process variable to stabilize for at least 30 seconds prior to making any adjustments. If an adjustment is needed, adjust the minimum or maximum range value accordingly.
  • Page 48 EZT-550 Controller Manual How to Calibrate Analog Outputs 1 and 2 (Air Temperature and Relative Humidity Retransmit) Select Analog Output 1 or 2 from the Calibration menu. The calibration window for the output will appear showing the minimum and maximum range settings.
  • Page 49 EZT-550 Controller Manual 7.2.3.3 Touchscreen Calibration After extended use and many hours of operation, it may be necessary to recalibrate the touchscreen of the EZT- 550. A typical sign that the screen may be out of adjustment, is inaccurate responses when attempting to press buttons, check boxes or adjust fields on the display.
  • Page 50 EZT-550 Controller Manual From the System settings window, touch the “Calibrate” button to start the calibration utility. Crosshairs will appear on the screen. At each crosshair position, touch the screen to set the calibration position. The calibration requires five points, the center and four corners. Once complete, the calibration utility will exit...

  • Page 51: Factory Security Options

    These values are set by the factory to the safe operating range of the chamber. 7.3.2 Startup Configuration The startup configuration settings tell the EZT-550 how to initialize the specific chamber systems that are present on the chamber. This affects chamber options and control settings relevant to those systems.

  • Page 52: File Access

    8. File Access In order to retrieve data files from the EZT-550’s memory stick, all that is required is a computer with a standard USB port. Insert the memory stick into the computer’s USB port. The computer’s operating system will automatically detect the memory stick and assign a drive letter to it.
  • Page 53 EZT-550 Controller Manual Once opened, the log file will display columns of data including the date, time and corresponding process variable and setpoint values. The data can then be manipulated and graphed if desired using your spreadsheet program.

  • Page 54: Communications

    EZT-550 Controller Manual 9. Communications This section provides information on the communication protocol used to communicate to the EZT-550 over a serial connection. CAUTION Special technical knowledge regarding serial communications is required to utilize the provided information. Attempted use without understanding all aspects of serial communications and connections may cause the EZT-550 to perform unexpected operation, resulting in disorder of the control system, damage, or accidents.

  • Page 55: Maintenance Protocol

    The request message is sent from the computer to write data to, read or clear data from the EZT-550U. The reply message is sent from the EZT-550 in response to the request message from the computer.

  • Page 56: Write Data Command

    9.2.1 Write Data Command Data can be written to multiple operands at a time starting with the specified operand in the EZT-550. This command can be used to turn the chamber on and off as well as set setpoints and start/stop a profile.
  • Page 57 Reply Messages (Write Data Command) If the request message was valid, the EZT-550 will send an OK reply to acknowledge the data write. If the message was formatted of received incorrectly, the EZT-550 will send an NG reply to notify the user that the...

  • Page 58: Read Data Command

    EZT-550 Controller Manual 9.2.2 Read Data Command Data can be read from multiple operands at a time starting with the specified operand in the EZT-550. This command can be used to read process variables, setpoints and chamber status. Request Message (Read Data Command) NOTES: Communication device number is always 00 (30h 30h).

  • Page 59: Bcc Block Check Calculation

    For both the write and read commands, the BCC must be calculated and inserted into the command. The BCC is used by the EZT-550 to make sure that the command sent was the command received. It does this by calculating the BCC of the received command and comparing it to the BCC sent in the command to verify that the received data is correct and has not been corrupted due to external noises or other causes.

  • Page 60: Ezt-550 Operands

    EZT-550 Controller Manual 9.3 EZT-550 Operands CAUTION Adhere to the following table of operands and their allowable data ranges. Do not exceed the ranges or attempt to write to any other operand number than those listed below. Failure to do so can result in controller failure and or damage to equipment.
  • Page 61 EZT-550 Controller Manual Operand # Description Data Range Read/Write Limited to temperature range of chamber. Typically –73°C (-100°F) to 190°C (374°F). See chamber manual to verify valid safe operating range. Humidity Setpoint 0005 Used to set single setpoint humidity. Note: The setpoint must be in whole numbers.
  • Page 62 EZT-550 Controller Manual Operand # Description Data Range Read Only Range = -100.0 to 100.0% Note: The value is read in whole numbers. 0031 Loop 2 (humidity) Percentage of Output The decimal point is implied as the first digit in...
  • Page 63 EZT-550 Controller Manual Operand # Description Data Range Cascade Control When cascade control is enabled, the DUT Read/Write 0140 sensor will be used to control the heat/cool 0 = cascade control off loop in order to get the product to 1 = cascade control on temperature faster.

  • Page 64: Profile Area Operands

    Profiles must be loaded into a specific memory area of the EZT-550. The memory area is formatted in a specific manner and the profile data must be loaded accordingly. Each profile consists of a 9 operand base area and consecutive 9 operand step areas.
  • Page 65 EZT-550 Controller Manual Profile Step Operand Area The profile step area begins at operand 3009 and continues through operand 3899. The step data and operand configuration is shown in the table below using step 1 as the example. The arrangement is typical for each step.
  • Page 66 EZT-550 Controller Manual Operand # Description Data Range Air Temperature Setpoint Read/Write Used to set the setpoint for air temperature Range = 0 to 100% relative humidity during the step. Note: The setpoint must be in whole numbers. Note: If the setpoint of the previous step is...
  • Page 67 EZT-550 Controller Manual Operand # Description Data Range Minutes Left in Current Step Read Only 0044 Contains the number of minutes left in the Range is 0 to 59 minutes. step of the profile currently running. Hours Left in Current Profile...
  • Page 68 EZT-550 Controller Manual Appendix A The passcode for System Maintenance is 40104. It is recommended that this sheet be removed from the manual and stored in a safe location to prevent unauthorized personnel from accessing the maintenance area.
  • Page 69 EZT-550 Controller Manual Appendix B...

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