Page 1 EZT-570S Environmental Chamber Controller User Manual EZT570S User Manual RevC.doc (450 V1.2 / 730 V1.0)
Page 2: Table Of Contents
EZT-570S User Manual TABLE OF CONTENTS Overview ......................6 Safety Information ......................... 6 1.1.1 Device Under Test (DUT) Safety Information ..............6 About the EZT-570S ......................7 Touch Screen Interface ......................8 Menu Navigation ........................9 1.4.1 Home Menu ........................10 1.4.1.1 Text Based Home Menu ..................
Page 3 EZT-570S User Manual Automatic Ramp/Soak Program Operation ..........34 Entering a Ramp/Soak Program ..................35 4.1.1 Entering Step Time ......................36 4.1.2 Entering Step Set Points ....................36 4.1.2.1 Entering Ramp Rate ....................37 4.1.3 Setting Step Events ......................39 4.1.4...
Page 4 Digital Output Wiring .................... 114 Monitor Offset Calibration ....................116 8.7.1 Refrigeration Monitor Option ..................117 Display Settings ......................... 118 8.8.1 Calibrate Touch ......................118 8.8.2 Backlight Settings ......................119 Configuration ........................121 8.10 About the EZT-570S ......................122 8.11 Exit Application ........................123...
Page 5 9.3.4.1 Recommended VNC Viewer Settings (PC/MAC) ..........138 9.3.4.2 Recommended VNC Viewer Settings for Tablets ..........140 9.3.4.3 Accessing the EZT-570S through a VNC Viewer ..........141 Diagnostics ....................143 10.1 Alarm Codes and Troubleshooting..................144 10.2 Service Monitors........................ 148...
Page 6: Overview
570S environmental chamber controller. Not all options and/or features may be available on your particular chamber. It is highly recommended that you read this manual thoroughly and understand all aspects of the EZT-570S controller prior to operating your chamber. 1.1 Safety Information Note, caution and warning symbols that appear throughout this manual are to draw your attention to important operational and/or safety information.
Page 7: About The Ezt-570S
‘Smart Device’ interface for interaction between the user and the EZT-570S. The EZT-570S can store more than one year of data on its SD memory card. Data logging can be enabled manually or automatically during ramp/soak program operation. Data backup is provided by a USB memory stick for plug and play transfer of files to any PC or via the FTP back-up utility.
Page 8: Touch Screen Interface
EZT-570S User Manual 1.3 Touch Screen Interface The EZT-570S display is split into two sections; the icon bar and main display area. Icon Bar Main Display Figure 1-2 Touch Screen Interface The menu icon will open the main menu for navigating to the different control and monitoring screens.
Page 9: Menu Navigation
1.4 Menu Navigation The EZT-570S provides the user with the ability to select text based menu navigation, much like the typical file menu system of a PC, as well as an icon based navigation system like that of a “smart”...
Page 10: Home Menu
EZT-570S User Manual 1.4.1 Home Menu The home menu is the top level, default menu provided when the chamber and the EZT-570S first powers on. Pressing the menu icon will display the main menu offering the selections shown below. 1.4.1.1 Text Based Home Menu The View menu provides navigation to all standard view screens.
Page 11: Icon/Slide Page Based Home Menu
EZT-570S User Manual 1.4.1.2 Icon/Slide Page Based Home Menu Slide page 1 provides navigation to all standard view screens. These include the Main loop view, Overview, Trend, status Monitor, Alarm, Alarm History screens. It also provides access to the EZT-570S Settings...
Page 12: System Settings Menu
Message screen. The Offline menu provides access to the EZT-570S offline settings screens which provide the user with the ability to adjust the date/time,...
Page 13: Icon/Slide Page Based Device Settings Menu
It also includes access to communications settings for the web page, VNC server and user Modbus communications. Slide page 2 provides access to the EZT-570S offline setup screens which provide the user with the ability to adjust the date/time, calibrate...
Page 14: Data Menu
The History menu provides functions for viewing historical data files in graphical format. The Utilities menu provides access to the EZT-570S file management utilities including USB file transfer and FTP/WAN back-up.
Page 15: Icon/Slide Page Based Data Menu
EZT-570S User Manual 1.4.3.2 Icon/Slide Page Based Data Menu Slide page 1 provides access main Logging and Log Points assignment screens. Historical data file functions are provided for Opening Deleting historical files as well as viewing/setting data file Annotations and digital Signatures.
Page 16: Offline Menu
Offline settings can only be accessed when a ramp/soak program is not running and data logging is turned off. When entering offline setup, the EZT-570S will go ‘offline’. This means that all outputs and control functions will stop and be disabled. If the chamber’s operation cannot be interrupted due to an active test, do not enter offline mode.
Page 17: Icon/Slide Page Based Offline Menu
EZT-570S User Manual 1.4.4.2 Icon/Slide Page Based Offline Menu Slide page 1 provides navigation back to the system settings menu, temperature Units, Clock, Service Counters Service Options, Display settings and Language selection. It also provides access to About Exit application screens.
Page 18: Notifications
Figure 1-5 Notifications All available notifications can be viewed by touching the screen and dragging a finger up or down on the list to scroll through all items like all other lists in the EZT-570S. The notifications include the following: •...
Page 19: Monitoring
In order to view the temperature or humidity over time, the EZT-570S provides real-time trends. Eight user configurable trends are provided with up to eight user selectable plot points each. In addition, the EZT-570S provides system status and alarm views to inform the user of any issues that arise with chamber operation.
Page 20: Overview
By pressing either button, the previous or next loop will appear in sequential order. When the first or last loop is reached, the EZT-570S will automatically wrap around to the beginning or end of the list to show the next loop. If the number of loops configured in the system matches the number shown on the screen, the arrow buttons will not be shown as there are no additional loops or monitor points to scroll to.
Page 21: Trends
EZT-570S User Manual The currently loaded program, or status of a running ramp/soak program will be displayed at the bottom left of the screen. The Overview will also display all current alarms that have not been cleared from the Alarm screen. The alarm field will automatically scroll through each alarm, displaying one at a time every few seconds until all alarms have been cleared.
Page 22: Trend Setup
If the EZT-570S clock updates for daylight savings time, or is corrected to the proper time by the NTS server, the offset in time may cause the trend to display data inaccurately due to this time offset.
Page 23: Alarm Monitor
EZT-570S User Manual Time Period - Adjusts the displayed time period for the graph. The allowable range is from 4 to 1440 minutes (24 hours). Maximum - The maximum value sets the maximum range of the vertical access with a minimum value of -32,760 and a maximum of 32,760.
Page 24: Help For Alarms
2.4.2 Help For Alarms The EZT-570S provides alarm specific help to assist the operator in determining what caused an alarm and how it may be corrected. To view the help for an alarm, select the alarm from the alarm list by touching the alarm’s description.
Page 25: Alarm History
2.5 Alarm History The Alarm History screen displays all alarms for any given day. The EZT-570S can store daily alarm files for a period of a year or longer (time based on storage usage for data logging). Each time an alarm occurs, the alarm is written to a file.
Page 26: System Status Monitor
System alarms take priority over the status alerts. The EZT-570S will always direct the user to the alarm screen if an alarm is present in the list.
Page 27: Manual Operation
EZT-570S User Manual 3. Manual Operation The EZT-570S controller can function as either a static (single) set point controller or as an automatic ramp/soak program controller. The EZT-570S is in static mode (single set point operation) when it is not running a ramp/soak program. This section describes how to operate the chamber in this mode.
Page 28: Manual Operation (Turning The Chamber On/Off)
EZT-570S User Manual 3.2 Manual Operation (Turning the Chamber On/Off) Events are the “switches” used to turn the chamber, its related functions, and optional systems on and off. These events can be manually turned on and off as well as programmed into ramp/soak programs so that they can be turned on and off at set time intervals.
Page 29: Standard Chamber Options
0 since the chamber is not capable of removing any more moisture from the air. The EZT-570S is programmed to determine what the minimum achievable humidity point is at any given temperature and will control to that limit. Therefore, the system will not overwork itself trying to reach an unattainable point.
Page 30: Auxiliary Cooling Operation
When this option is installed on the chamber, turn the “Aux Cooling” event on. When the boost is required during a pull down, the EZT-570S will automatically turn on the boost cooling solenoids and inject LN2 or CO2, into the chamber to rapidly drop the temperature as required. Once the desired set point is achieved, the boost solenoids will close in order to conserve LN2 or CO2 since it is no longer required, and allow the refrigeration system to maintain the chamber air temperature.
Page 31: Dry Air Purge/Low Rh Operation
The EZT-570S can provide a direct pressure reading in Torr (millimeters of mercury) or convert the resultant pressure within the chamber into feet, which allows the altitude set point to be entered directly in feet.
Page 32: Thermal Shock Transfer Mechanism Operation
EZT-570S User Manual As altitude increases, the air density within the chamber decreases. The heating and cooling systems require a minimum amount of air flow in order to operate correctly and control the internal chamber air temperature. The altitude system will inhibit the operation of the heating and cooling systems when the altitude increases beyond the design limits.
Page 33: Defrost Operation
3.2.4 Customer Events Option The EZT-570S controller has the ability to control up to 15 event output relays. These outputs can be manually turned on and off or controlled programmatically through a running ramp/soak program. They can be used to start and stop devices under test within the chamber, turn signal beacon lights on and off to indicate different steps within the test cycle, etc.
Page 34: Automatic Ramp/Soak Program Operation
A ramp/soak program is a set of instructions (set points and events) programmed as a timed sequence of steps. When a program is run, the EZT-570S executes each step of the program automatically, in sequence, based on the time duration and settings for each step. The EZT-570S can store hundreds of automatic ramp/soak programs (depending on storage usage for data logging) with up to 99 steps in each program.
Page 35: Entering A Ramp/Soak Program
EZT-570S User Manual 4.1 Entering a Ramp/Soak Program Ramp/Soak programs are created and edited from the Program Entry screen. To create an automatic ramp/soak program: 1. On the Program Entry screen, press the File menu button, select “New” to create a new program.
Page 36: Entering Step Time
EZT-570S User Manual 4.1.1 Entering Step Time The length of time, loop set points and jump conditions for each step are entered by touching the corresponding row for the desired entry in the list on the left side of the Program Entry screen. To enter the time for the step, press the first row in the step data list view that contains the time entry.
Page 37: Entering Ramp Rate
EZT-570S User Manual Entering a Soak Step The set point entry for a step defines the target set point, i.e., the set point that will be achieved by the end of the step. Thus, if the set point of the step matches the set point for the control loop from the previous step, the loop will soak, i.e., remain at that set point for the entire step creating a soak step.
Page 38 The ramp rate entry is fixed in units/minute with a range of 0.0 to 99.9. When the ramp rate entry is zero (or left blank), the EZT-570S simply enters the new set point. Ramp rate can only be entered on one loop per step since the program operates on a single time base.
Page 39: Setting Step Events
The EZT-570S also provides the “Same Events” function from the “Edit” menu button. When selected, all event selections of the current step will be copied to all following steps. This can be useful when making copies of programs.
Page 40: Setting Guaranteed Soak Events
A program can also be set to wait for a digital input. This allows any of the eight optional digital inputs to be selected. When the EZT-570S reaches the step, it will wait for the input to change state before...
Page 41: Figure 4-6 Program Wait For
EZT-570S User Manual When a wait selection is made on a step, an asterisk ‘*’ will appear before the word ‘Wait’ on the list selection button. This lets the user know that a wait for condition is entered for the step without having to press the ‘Wait’...
Page 42: Using Jumps
EZT-570S User Manual 4.1.6 Using Jumps The jump allows the program to “jump” between different steps within it. This is useful for repeating the same ramp/soak combination during extended cycle testing of product. When a jump is programmed on a step, the program will first execute the step as a normal step; however, once the step time is complete, the program will jump to the specified “jump to step”...
Page 43: Autostart
It is not used for this function. When auto start by day is selected, only the day of week and time is required to be entered. The date settings are ignored. The EZT-570S simply looks for the day of week and time to begin the program.
Page 44: Guaranteed Soak Limits
EZT-570S User Manual 4.1.8 Guaranteed Soak Limits To access the guaranteed soak limits, select “G-Soak Limits” from the Edit menu button on the Program Entry screen. The Guaranteed Soak Limits screen is used to set the control tolerance for guaranteed soak steps when in program operation. When the process variables deviate from their set points by more than the soak limits, the program time will stop until the process variables re-enter the soak bands.
Page 45: Program Plot
EZT-570S User Manual 4.2 Program Plot The program under edit can be viewed graphically by “Plot” from the Program menu. This allows you to see if the program entered matches the expected appearance. The Y-axis auto-scales to fit the range of set points entered for each loop in the program. The X-axis auto-scales to the total time duration of the program.
Page 46: Starting An Automatic Ramp/Soak Program
In order to start a ramp/soak program, it must first be loaded into the EZT-570S control module. This is done automatically upon new program selection, or when running the program under edit from the Program Entry screen.
Page 47: Hold/Resume Ramp/Soak Program Operation
EZT-570S User Manual Once the desired start step number is entered, press the “Start” button. The program will then be transferred to the control module’s memory and then started once the transfer is complete. The Program Operation screen will then be automatically closed.
Page 48: Monitoring Automated Ramp/Soak Program Operation
EZT-570S User Manual 4.4 Monitoring Automated Ramp/Soak Program Operation The Program Status view provides all status information regarding the operation of the current program. It can be accessed directly from the home Program menu. Figure 4-13 Program Status Status indicates the current program operating mode, i.e., active, hold, ramp, soak, waiting, etc.
Page 49: Adjusting Step Time
EZT-570S User Manual 4.4.2 Adjusting Step Time During program operation, the length of time remaining in a step can be adjusted to increase or decrease the time left. The adjust step time function allows you to add or subtract time from the current step;...
Page 50: Program Worksheet
4.5 Program Worksheet This table can be used as a template for creating programs prior to entering them on the EZT-570S. It can also be used as a tool for quick checks to make sure all of the entries were made correctly.
Page 51: Frequently Asked Questions About Ramp/Soak Program Operation
Main loop view and Overview screens. The EZT-570S will indicate that the program is running when it is in operation. If a program is not running, the EZT-570S will display the name of the currently loaded program, i.e., present in memory and ready to be run.
Page 52 When a “wait for” condition is applied to a step, the step will not begin until the wait for condition is met. If the wait for condition is an input to the EZT-570S, the input must reach and/or exceed the wait for set point.
Page 53: System Settings
The power recovery settings direct the EZT-570S’s response to the interruption of electrical power. The EZT-570S’s battery-powered real-time clock tracks the amount of time the power is out. When power is restored, the controller compares this amount of time to the Power-Out Time setting and takes whatever action is selected in the Recovery State.
Page 54: Set Point Limits
EZT-570S User Manual 5.2 Set Point Limits The Limits screen allows for the adjustment of the minimum and maximum operating set points allowed to be entered for the control loops. These limits can be used to prevent operators from entering a value that exceeds the survivability limits of a product being tested, reducing the risk of product damage.
Page 55: Event Names
(up to 16 characters long). Once complete, press “Enter” and the new name will be shown in the list and used throughout all EZT-570S screens. The default names for the optional events are “Customer Event 1” to “Customer Event 15”.
Page 56: Alarms
EZT-570S User Manual 5.4 Alarms The EZT-570S provides user configurable alarms for each input. The alarms are activated when the process value leaves the selected range. A user can configure how and when an alarm is triggered, what action it takes and whether it clears automatically when the alarm condition is over or requires manual reset.
Page 57: Set Points And Alarm Message
Digital Output Assignment If the EZT-570S is equipped with the customer event option, the alarm can be assigned to one of the event outputs. When the alarm activates, the output will work in conjunction with the alarm and turn on when the alarm is active and off when the alarm is cleared.
Page 58 EZT-570S User Manual The low and high alarm set point fields are shown for all alarm types; however, only the high set point is used for ‘high’ alarms, low for all ‘low’ alarms and both fields are used for Absolute and Deviation ‘both’ alarm types.
Page 59: Product Control
EZT-570S User Manual 5.5 Product Control If the chamber is equipped with a product control loop, this screen will be accessible from the device settings View menu. Figure 5-6 Product Control Product control is a control strategy in which one control loop provides the set point for another loop.
Page 60: Using Product Control
EZT-570S User Manual Process: This mode uses the lower and upper set points as the upper and lower range of the air temperature set point. The output of the product control loop is then used to calculate a linear set point between these two values in order to provide the set point for the air temperature loop.
Page 61: Implementing Product Control On "Dead Loads
EZT-570S User Manual Product Placement Typically, the most detrimental affects are caused when shelves are used in a chamber and not enough free space around the product is provided for proper air flow. It is more beneficial to use multiple shelves with staggered product placement than to overload a shelf.
Page 62: Implementing Product Control On "Live Loads
EZT-570S User Manual Therefore, as the product set point is changed, the deviation band changes with it so you always maintain an air temperature control range around the product set point. This provides a stable and accurate control method throughout the product’s test range. Knowing what values to set for the lower and upper set points may require some trial and error.
Page 63: Considerations When Applying Product Control
The product set point will also take user entry and control the value entered via the numeric keypad. “temperature” set point is then entered on the product loop as the EZT-570S is now controlling product temperature.
Page 64: Condensation Control
The list of selections on the right of the screen is used to select which inputs will be used for monitoring part temperature. Note that the standard system has only one selection, the product control loop input. If the EZT-570S is equipped with the input monitor option, the additional inputs will be listed for selection.
Page 65: Defrost Settings
Defrost can be set to run automatically or under manual control through the use of an event. When auto mode is selected, the EZT-570S will monitor the conditions of operation and automatically start defrost based on the parameters the user has entered.
Page 66: Communication Settings
Modbus address sets the address of the EZT-570S on the serial communications link. Valid addresses are 1 to 31. The parity setting allows the EZT-570S’s serial port to be set for even, odd or no (none) parity. The VNC Address and Password set access rights to the EZT-570S VNC server. Valid addresses are from 0 to 255.
Page 67: Barcode Reader
When the Start the automatic program option is turned on, if the scanned data matches the name of a ramp/soak program stored in memory, the EZT-570S will automatically load the program and prompt the user to start it. If the user presses ‘Yes” to start the program it will be downloaded to the control module and will begin operation on the first step.
Page 68: Barcode Reader Communication Settings
5.9.1 Barcode Reader Communication Settings In order for the barcode reader to communicate properly with the EZT-570S, it must be set with the proper communication settings. This includes baud rate, data bits, stop bits, parity and start/end of transmission characters as follows:...
Page 69: Email
Up to 30 addresses can be programmed into the system. Each one can be configured to receive emails, SMS text messages or both. When an alarm occurs, the EZT-570S will send an alert to the specified address for each user in the list. The email settings are accessed by selecting “Email” from the setup “Email”...
Page 70: Email Addresses
Figure 5-12 Email Addresses 5.10.3 Email Settings The “Settings” tab provides access to the email server configuration, which is how the EZT-570S is able to connect and send email messages over its Ethernet connection. Each field may have up to 50 characters.
Page 71 If the mail server is down, or the EZT-570S is not connected to the network, the message will not be sent and a local alarm message on the alarm screen will indicate a transmission failure.
Page 72: Sending Email Messages
EZT-570S User Manual 5.10.4 Sending Email Messages The EZT-570S provides the ability to send short email messages to addresses programmed into its email server. To send a message, select “Message” from the device settings, Email menu. Figure 5-14 Send Email Message Press the “Compose”...
Page 73: Navigation
The EZT-570S also offers the ability to choose the screen that will be displayed when pressing the “Home” icon. To choose the home view, press the button for the desired screen, either the Main loop view or Overview screen.
Page 74: Tuning
By pressing either button, the previous or next loop will appear in sequential order. When the first or last loop is reached, the EZT-570S will automatically wrap around to the beginning or end of the list to show the next loop. If the system has only one loop, the arrow buttons will not be shown.
Page 75 EZT-570S User Manual The Proportional Band is in the units of measurement for the control loop. On temperature for example, a proportional band of 10 would be 10 degrees. Thus, as the PV drops below set point by 0 to 10 degrees, the output would go from 0 to 100% for full heat.
Page 76: Security
EZT-570S User Manual 6. Security The EZT-570S security model provides an administrator with the tools to add up to 30 users to the system. Each user must have a unique ID, full name and password. Four user levels are provided which include system, user, supervisor and administrator levels.
Page 77: Adding Users
EZT-570S User Manual 6.1 Adding Users The “New” user tab provides the ability to add up to 30 users to the system. Select the type of user from the drop down list (System, User, Supervisor or Administrator). Press each field to add the user ID, full name and password (no spaces allowed, 5 character minimum and 16 characters maximum).
Page 78: New Password Entry
EZT-570S User Manual 6.2.1 New Password Entry To change a password, select the desired user by touching the User ID in the list box and press the ‘New Password’ button. Enter the new password and confirm the password. Press the ‘Save’ button to change the password (no spaces allowed, 5 character minimum and 16 characters maximum).
Page 79: User Access Rights
EZT-570S User Manual 6.3.1 User Access Rights The following table is a list of the available user rights, where to find the menu item(s) applicable to the user right and a description of what it applies to. Certain menu items may not be available on your chamber depending upon available options.
Page 80 System/Exit; “Exit application. (automatic mode startup).” button Exit to Configurator System/Settings /Offline/Settings/ allows user to exit the EZT-570S application and set System/Exit; “Exit Application. the system to boot up in the configurator on the next (configuration mode startup).” button power cycle...
Page 81: Setting Security Options
Audit Trail is a global setting that turns the audit trail on or off. When the audit trail is turned on, all user actions are written to a daily log. Security is the global setting that turns the EZT-570S security system on or off. The security system must be enabled for the audit trail to be enabled.
Page 82: Audit Trail
It displays all user actions that affected the system for any given day. The EZT-570S can store daily audit files for a period of a year or longer (time based on storage usage for data logging). Each time a user take an action that affect the operation of the system (changing a set point, start/stop data logging, changes an alarm set point, etc.), the action is written to a file.
Page 83: Data Logging
EZT-570S User Manual 7. Data Logging The EZT-570S data logging features are accessed via the home ‘Data” menu item. The system data logging provides the ability to select individual points for logging, view data log files and start/stop logging operations. The logging ability of the EZT-570S provides an easy-to-use, convenient method to obtain electronic data without the need for additional data acquisition equipment.
Page 84: Selecting Points For Logging
Save button is pressed. 7.2 Start/Stop Data Logging The EZT-570S logs data to its SD card. Current data for each variable is written to the log at a fixed interval based on the settings entered in the “Length” and “Interval” fields.
Page 85 Files that exceed the capability of the data viewer (>520KB in size) will have to be extracted from the EZT-570S using a USB memory stick or FTP file transfer in order to be viewed remotely on a PC.
Page 86: Calculating Log File Size
7.2.1 Calculating Log File Size The EZT-570S saves the log file in a text based format (.csv), so the amount of memory consumed for each reading is dependent upon the number of digits required to accurately display the value. This optimizes memory usage but also makes calculating an exact file size difficult. To obtain a worst case approximation of the resultant file size, use the following formula: File Size (KB) = 1 + [0.023 + (0.006 * number points selected for logging)] * number of readings...
Page 87: Plotting Historical Data
To display the data from the currently opened history file select Plot from the History menu. If a file has not been opened or data points have not been assigned to plot, the EZT-570S will alert the user to correct the problem. The ‘X’ and ‘Y’ axis scales are set to auto scale based on current values for each plot channel so no user action is required.
Page 88: Usb File Transfer
EZT-570S interface. Any change to SD directory structure (moving or deleting files with a PC) may cause the EZT-570S to stop operating and a new SD card will need to be ordered. Never move or delete the directories unless using the provided file utilities functions.
Page 89: Figure 7-7 Usb File Transfer
To Copy/Delete files from internal memory, insert the USB memory stick into the USB port. Select the file type you wish to copy and erase from the EZT-570S internal memory, by selecting it from the “Export Type” drop down menu. Available file selections are Program files, Alarm files, Audit trail files and Data files.
Page 90: Ftp Data Backup
(if required) to allow the EZT-570S to connect to the designated FTP site. Figure 7-8 FTP/WAN Setup The IP Add field is used to enter the IP address of the FTP site that the EZT-570S is to send the files.
Page 91 The default port is 21. The port number can be set from 0 to 65535. The User field allows you to enter a user name for FTP site access. When the EZT-570S connects to the FTP site to transfer files, the user name will be used to identify the connection. If a security login is required, the proper user name will have to be entered in this field.
Page 92: Annotation
EZT-570S User Manual 7.6 Annotation The Annotation screen allows the user to add a message to the running data file and view any messages currently associated with a loaded historical data file. Figure 7-9 Annotation When a historical data file is loaded, the Annotation screen will display any messages that were written to the file.
Page 93: Digital Signatures
“Verify” button. The EZT-570S will compare the signature to the log file to see if any alterations to the data have been made. The EZT-570S will then indicate if the signature is valid or not.
Page 94: Offline
The offline setup options are available from the System/Settings menu. Prior to entering offline setup, ramp/soak program operation and data logging must be manually stopped. When in offline mode, all EZT-570S digital and analog outputs will be turned off. The offline menu provides navigation to the following functions:...
Page 95: Service
EZT-570S User Manual 8.1 Service The service counters provide service interval alerts and life total service numbers for chamber components and systems. The service intervals are preset at the recommended period for system performance and reliability; however, the values can be adjusted to meet user specific maintenance intervals.
Page 96: Service Options
EZT-570S User Manual 8.1.1 Service Options The service display options as well as alert action can be adjusted from the ‘Service Options’ screen. Figure 8-2 Service Options The Elapsed and Total buttons are used to select which count is to be viewing on the service screen.
Page 97: Degrees C\F Selectio
EZT-570S User Manual 8.2 Degrees C\F Selection The EZT-570S can display temperatures in either degrees C or F. To change the temperature units, select “Units” from the offline “Setup” menu. Figure 8-3 Temperature Units Selection Press the button for the desired temperature units to make the selection. The choices are mutually exclusive so when one selection is made, the other will be de-selected.
Page 98: Clock Settings
Select the time “Options” tab to configure the time zone and national time server clock settings. If the EZT-570S is connected to the internet, these settings can be used to have its clock automatically synchronize the time with one of the nationally provided time servers.
Page 99: Local Time Server Settings
EZT-570S User Manual If the EZT-570S is not connected to the internet, a local alarm message will be shown on the alarm screen; “NTP Failure. Check cable and server”, to indicate that the time server could not be located. 8.3.1.1...
Page 100: Language
English is the default language for the EZT-570S. All other language selections provided through internet translation of the English language. CSZ does not guarantee the accuracy or validity of alternative language selections and shall not be liable for any damages or...
Page 101: Special Settings
EZT-570S User Manual 8.5 Special Settings The “Special Settings” screen is available for special applications when custom settings may be required for certain operating parameters. If available on your system, the “tagnames” for the fields will describe what the setting is for. The value can be changed by touching the field entry window and entering the new setting via the keypad.
Page 102: Hardware
8.6.1 Analog Inputs The EZT-570S can have up to five analog inputs which are used for remote set point inputs. This menu item will appear if your chamber is equipped with the remote set point option. With this option, electrical connections are provided on the chamber for external connection to each available input.
Page 103: Enabling Remote Set Point Inputs
Note that if the minimum or maximum set point generated by the input exceeds the set point limits for the control loop, see Section 5.2, Setpoint Limits, the EZT-570S will limit the set point to the minimum or maximum set point limits value as defined in system setup.
Page 104: Analog Input Wiring
Use care when connecting remote signal generators and make sure they cannot overload the EZT-570S’s inputs. Configure the EZT-570S’s input for the desired signal level and cycle power prior to connecting the source signal or damage to the input may result.
Page 105: Analog Outputs
8.6.2 Analog Outputs The EZT-570S can have up to four analog outputs which can be used to retransmit set points, process variables or percentages of output from the installed control loops. If your chamber is equipped with optional analog outputs, this menu item will appear in the Hardware menu. With this option, electrical connections are provided on the chamber for external connection to each available output.
Page 106 For example, an application requires a 0-10V output signal from the temperature loop for a cooling output of 0 -100%. On the EZT-570S, 0-100% cooling is represented as a value of 0 to -100%, while heating is 0-100%. In order to transmit the cooling output, set the “Minimum” to 0 and the “Maximum”...
Page 107: Analog Output Wiring
If you connect more than one device to each output make sure that you do not exceed the output capabilities of the EZT-570S. Note that the provided connection may have terminals for all four available outputs; however, your chamber may be equipped with only one based on purchased options.
Page 108: Digital Inputs
8.6.3 Digital Inputs The EZT-570S digital input option provides eight digital inputs which can be used to start and stop an automatic ramp/soak program, hold a program or control optional event outputs. If your chamber is equipped with the digital input option, this menu item will appear in the Hardware menu. With this option, electrical connections are provided on the chamber for external connection to each input.
Page 109: Figure 8-15 Digital Input Functions
EZT-570S User Manual Figure 8-15 Digital Input Functions Run Program: When selected, the input will start the currently loaded program at step one. If a program is currently running, no action will occur. This is a ‘single-shot’ activation in which the input must make the required transition state in order to activate the function.
Page 110 EZT-570S User Manual Previous Step: When selected, the input will advance the ramp/soak program to the next step. The program must first be placed in hold prior to the input turning on in order for the step change to take place.
Page 111: Digital Input Wiring
Doing so can cause irreparable damage to the EZT-570S and may result in a hazardous shock or fire. Do not exceed the digital input voltage range or damage to the input may occur. The +24Vdc supply is of limited power and for sourcing the inputs only.
Page 112: Digital Outputs
8.6.4 Digital Outputs The EZT-570S digital output option provides 15 digital outputs which can be used as event outputs, alarm outputs or for other signaling needs. This is a common menu item and will be present even if your chamber is not equipped with the optional digital outputs. If your chamber is equipped with the optional digital outputs, electrical connections will be provided on the chamber for external connection to each of the outputs.
Page 113 EZT-570S User Manual The output function defines what condition causes the output to turn on and off. All digital outputs are configured as event outputs by default. More than one output can be set for the same function. Event: When selected, the output is controlled directly from the corresponding event on the Overview screen and Program Entry screen.
Page 114: Dut Safety Relay Output Wiring
EZT-570S User Manual 8.6.4.1 DUT Safety Relay Output Wiring The DUT safety relay connection is provided as standard on most chambers. To connect to this relay, locate the digital output connector on your chamber. The DUT connection is located on the digital output connector panel (see Figure 8-19).
Page 115: Figure 8-19 Digital Output Wiring
EZT-570S User Manual Figure 8-19 Digital Output Wiring The digital outputs are potential free dry contacts divided between two common headers. Each output is rated for 2A of current with a maximum of 8A per common line. If all outputs are being used, the sum of the current must not exceed 8A.
Page 116: Monitor Offset Calibration
The monitor option provides up to eight thermocouple inputs for monitoring temperatures throughout the chamber. The calibration range is fixed within the EZT-570S hardware; however, the user can input an offset in order to adjust for sensor tolerances and lead affects.
Page 117: Refrigeration Monitor Option
14.7 (standard atmospheric pressure). This converts the absolute pressure readings to gauge pressure. The EZT-570S uses 9300 controllers to monitor the refrigeration system temperatures and pressures. One 9300 is used for each suction and discharge line. Input 1 of the 9300 is temperature and input 2 is pressure.
Page 118: Display Settings
After extended use and many hours of operation, it may be necessary to recalibrate the touch screen of the EZT-570S. 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. The calibration utility is provided in order to readjust the screen when this happens.
Page 119: Backlight Settings
Once complete, the calibration utility will provide a notification message that the new calibration settings have been measured and to touch the screen to register the new calibration data; just touch anywhere on the screen to close the window and return to the EZT-570S application to resume normal operation.
Page 120: Figure 8-23 Display Properties
30 minutes. Once all settings are complete, press the “OK” button and then press the “OK” button at the top right of the “Display Properties” window to return to the EZT-570S application and begin normal operation.
Page 121: Configuration
This prevents multiple configuration files with the same name from overwriting previous files. It also allows the user to identify a backup of the EZT-570S so that it could be reconfigured to a previous date if multiple back-ups are created.
Page 122: About The Ezt-570S
The “About” screen provides operating system version numbers for the currently installed firmware and program of both the EZT-570S HMI and control module. This information should be recorded prior to any service request so that proper assistance can be provided for your chamber.
Page 123: Exit Application
EZT-570S User Manual 8.11 Exit Application The “Exit” Application screen allows the user to quit the EZT-570S runtime software and return to the CE.Net operating system. This operation is NOT recommended with the exception of users who are in charge of system configuration due to the danger of editing or removing files by accident.
Page 124: Communications
9. Communications This section covers the connection to, and basic use of the EZT-570S communication interfaces. As a standard, the EZT-570S is equipped with both EIA-232 and EIA-485 serial interfaces as well as the standard network communications port. The EZT-570S can also provide an IEEE-488 (GPIB) communication port through the use of an optional interface converter.
Page 125: Serial Communications
Figure 9-2 Modbus Settings The EZT-570S is set by default for an address of 1 and even parity for use with CSZ’s EZ- View software package. If another software package is being used, or you are writing your own custom application, see the EZT-570S User Communications Reference Manual for instructions and information on command structure and protocol usage.
Page 126: Connections
9.1.2 EIA-232 Connections To connect the EZT-570S to a PC’s serial port, a null-modem cable is required. This type of cable is designed to allow two devices to communicate with each other via their serial ports. This cable differs from that of a standard cable because the transmit and receive wires are reversed. If one is not available, a cable can be fashioned rather easily.
Page 127 EZT-570S User Manual A maximum of 31 chambers can be linked together on a single EIA-485 link. When connecting multiple chambers together, do not run separate cables from the PC to each chamber. Follow the diagram below for proper connections. Running multiple connections from the host PC will degrade the signal and could prevent communications from operating correctly.
Page 128: Gpib (Ieee-488) Communications
The 4899 converter interface is configured with a default address of 4 on the GPIB bus. The address can be changed by using the proper command string. The EZT-570S’s serial communications address should be set to 1. This is the default address that the 4899 converter will use when communicating over its serial interface to the EZT-570S.
Page 129: Gpib Command Structure
There are six basic commands that are required to configure and operate the GPIB controller in order to communicate with the EZT-570S controller. These commands are listed in the table below. All commands are generated using standard ASCII text characters.
Page 130: Ethernet Communications
To connect the EZT-570S to a network, connect the chamber’s Ethernet port to your network using a standard CAT5 cable connection. After connecting the network cable, it may be necessary to cycle power to the EZT-570S in order for it to obtain a valid IP address from your network.
Page 131: Configuring The Ezt-570S Network
Configuring the EZT-570S Network In order to connect to the VNC server or web server of the EZT-570S, you will need to know the IP address of the EZT-570S on the network. It is important to note that if using DHCP in your network router, the address may change on re-power requiring you to access the EZT-570S directly in order to obtain the new IP address.
Page 132: Obtaining The Ezt-570S Mac Address
The MAC address can be obtained from the network connections screen. In order to access the screen, you must exit the EZT-570S application. To do so, proceed to the ‘Exit Application’ screen under the offline setup menu. Press the ‘Exit and start runtime on next power up’ button to exit the EZT-570S runtime application.
Page 133: Setting A Static Ip Address
Setting a Static IP Address In order to set a static IP address for the EZT-570S on a network, it requires you to exit the EZT-570S application and enter the ‘Network and Dial-up Connections’ settings of the CE operating system.
Page 134 EZT-570S User Manual To begin, you must exit the EZT-570S application. To do so, proceed to the ‘Exit Application’ screen under the offline setup menu. Press the ‘Exit and start runtime on next power up’ button to exit the EZT-570S runtime application. Follow the on screen prompts to stop the application and exit to the Windows CE desktop.
Page 135: Figure 9-7 Keyboard Taskbar Icon
EZT-570S User Manual Keyboard Icon Figure 9-7 Keyboard Taskbar Icon To enable the keyboard, touch the keyboard icon at the lower right of the taskbar and select ‘Keyboard’ from the menu. This will make the keypad visible. Next, press the Windows Start button and select ‘Settings’...
Page 136: Using The Web Server
Select ‘Specify an IP address’ and enter in the desired IP address, subnet mask and default gateway if required. For the 4.3” display version of the EZT-570S, you can move the keyboard around on the screen to position it as necessary to access the different fields. Once complete, close the ‘Ethernet Drivers’...
Page 137 EZT-570S User Manual To access and view the EZT-570S web page, enter the following link in your PC’s browser address window: http://”IPaddress”/ezt.html (from example address, http://192.168.0.11/ezt.html). following example is typical of the EZT-570S web page appearance. The web page updates automatically every 30 seconds and provides information on each individual loop, program status, alarm status and event status.
Page 138: Using The Vnc Server
EZT-570S. It is the responsibility of the end user to test the chosen VNC client for compatibility with the EZT-570S prior to putting the unit into service. If the VNC client...
Page 139 Proceed to the ‘Expert’ tab and scroll down the list of settings until you find the ‘FullColour’ option. It is recommended that this option be set to true. If set to false, the EZT-570S screen may not be shown properly in the client window. Locate the ‘PreferredEncoding’ and ‘Protocol3.3’ options further...
Page 140: Recommended Vnc Viewer Settings For Tablets
The following settings are provided as an example for the Remotix client for the iPad. When adding an EZT-570S server to the Remotix client, use the following settings. Note that the VNC server in the EZT-570S must have security enabled in order for this client to connect.
Page 141: Accessing The Ezt-570S Through A Vnc Viewer
The following examples are based on the use of the RealVNC viewer for PC/MAC. Once the default settings have been entered, just enter the IP address and port number for the EZT-570S and click the ‘Connect’ button to access the chamber over the network.
Page 142 If long term monitoring access is desired, use the built-in web server of the EZT-570S or a PC with EZ-View software to monitor and control the EZT-570S over its serial communications port. The web server interface and PC software is designed for long term monitoring and status updates.
Page 143: Diagnostics
EZT-570S User Manual 10. Diagnostics This section provides technical help for diagnosing problem conditions with your chamber. The information provided here covers typical options and accessories. If you are unable to diagnose a problem through the use of this guide, contact our Service Department.
Page 144: Alarm Codes And Troubleshooting
If intermittent alarm (can be cleared and returns at random intervals), then remote PC communicating too fast with EZT-570S. Reduce rate at which PC sends commands to the EZT-570S or reduce number of communication connections. Random alarms when communications are being used are not a sign of a hardware problem.
Page 145 FTP! Check cable or server down. Indicates that the FTP back-up attempt of the data files failed. Verify that the EZT-570S is properly connected to the network and that the FTP site is valid. This alarm does not affect chamber operations. It is an indication only alarm.
Page 146 EZT-570S User Manual Alarm Monitor Description Corrective Action PUMPDOWN DISABLED Chamber power off for more than 30 minutes. Will automatically reset in 4 hours. Can be manually reset via alarm monitor screen. Unit will not run with pumpdown disabled. “Input” SENSOR BREAK Check sensor wiring for indicated “input”.
Page 147 (no audible alert is associated with this indicator) RH HI DEWPOINT LIMIT EZT-570S is limiting the maximum humidity level based on the maximum allowable dewpoint that the chamber can operate safely without causing potential damage to the structure of the chamber.
Page 148: Service Monitors
EZT-570S User Manual 10.2 Service Monitors Perform lock-out, tag-out procedures and remove main power from the chamber prior to performing any service procedures. Service should only be performed by qualified service personnel. Elapsed Service Counter Description Service Action AIR CIRCULATOR HRS Inspect locking collars on fans.
Page 149 Inspect cables for fraying and replace if applicable. The elapsed service intervals are set based on CSZ recommended operating conditions for the chamber. These intervals may not be suitable to all applications due to varying operating conditions and environmental factors.
Page 151: Appendix
EZT-570S User Manual Appendix...
Page 152: Common Terms And Definitions
EZT-570S User Manual Common Terms and Definitions Autotune — A feature that automatically sets process control PID values to match a particular process in a system. Baud rate — The rate of information transfer in serial communications, measured in bits per second.
Page 153 EZT-570S User Manual Common Terms and Definitions (cont’d) Limit or limit controller — A highly reliable, discrete safety device (redundant to the primary controller) that monitors and limits the temperature of the process, or a point in the process. When temperature exceeds or falls below the limit set point, the limit controller interrupts power through the load circuit.
Page 154 EZT-570S User Manual List of Figures Figure 1-1 DUT Safety Connections...................... 6 Figure 1-2 Touch Screen Interface ......................8 Figure 1-3 Text Based Navigation ......................9 Figure 1-4 Icon Based/Slide Navigation ....................9 Figure 1-5 Notifications ........................18 Figure 2-1 Main View (one loop) ......................19 Figure 2-2 Main View (three loop) .......................
Page 155 Figure 8-23 Display Properties ......................120 Figure 8-24 Advanced Backlight Options ..................120 Figure 8-25 Configuration ........................121 Figure 8-26 About EZT-570S ......................122 Figure 8-27 Exit Application ....................... 123 Figure 9-1 Communications Connector ..................... 124 Figure 9-2 Modbus Settings ......................125 Figure 9-3 CE Desktop ........................

CSZ EZT-570S User Manual

1 Overview

2 Monitoring

3 Manual Operation

4 Automatic Ramp/Soak Program Operation

5 System Settings

6 Security

7 Data Logging

8 Offline

9 Communications

10 Diagnostics

Appendix

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