Page 1 EZT-570i Environmental Chamber Controller User Manual EZT570i User Manual Rev. B...
Page 2: Table Of Contents
TABLE OF CONTENTS Overview...… ..........................5 1.1 Safety Information ......................... 5 1.1.1 Device Under Test (DUT) Safety Information ..............5 1.2 About the EZT-570i ....................... 6 1.3 Touch Screen Interface ......................7 1.3.1 Menu Navigation ......................8 1.4 Print Features ........................12 1.5 Multi-lingual Voice Assisted Help ..................
Page 3 EZT-570i User Manual System Setup ..........................46 5.1 Power Recovery ......................... 46 5.2 Setpoint Limits ........................47 5.3 Event Tagnames ......................... 48 5.4 Process/Alarm Tagnames ....................49 5.5 Alarm Settings ........................50 5.6 Product Control ........................52 5.6.1 Using Product Control ....................53 5.6.1.1 Should I Use Product Control for My Test .............
Page 4 9.3.3 Setting a Static IP Address ..................116 9.3.4 Using the Web Server ....................120 9.3.5 Using the VNC Server ....................122 9.3.5.1 Accessing the EZT-570i through a VNC Viewer ..........122 9.3.5.2 Recommended VNC Viewer Settings ..............124 10. Diagnostics..........................126 10.1 Alarm Codes and Troubleshooting ...................
Page 5: Overview
570i 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-570i’s 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 6: About The Ezt-570I
EZT-570i User Manual 1.2 About the EZT-570i The EZT-570i Environmental Controller is a DCS (Distributed Control System) which uses different hardware layers to perform the various functions needed to operate the chamber including user interface, system monitoring and protection, as well as process control. This type of platform allows for more flexibility in chamber design while providing a high level of reliability and control accuracy.
Page 7: Touch Screen Interface
EZT-570i User Manual 1.3 Touch Screen Interface The EZT-570i display is divided into three main sections; the menu bar, main display area and detail window. Menu Bar Main Display Chamber Light On/Off Detail Window Print Screen Figure 1-2 Touch Screen Interface...
Page 8: Menu Navigation
“button style” systems. The EZT-570i provides a “Windows” like feel with drop down menus and online help at all times. This section of the manual provides an overview of the menu items and structure.
Page 9: Figure 1-4 Profile Menu Navigation
EZT-570i User Manual Profile Menu Figure 1-4 Profile Menu Navigation Screens Menu The “Screens” menu provides navigation back to the main menu and the profile view screens. These include profile status, profile entry, soak limits, autostart and plot profile screens.
Page 10: Figure 1-5 Setup Menu Navigation
Screens Menu The “Screens” menu provides navigation back to the main menu screen. Setup Menu The “Setup” menu provides access to the EZT-570i’s setup screens and the link to the offline system maintenance area. Email Menu The “Email” menu provides access to the EZT-570i’s email server settings.
Page 11: Figure 1-6 Logging Menu Navigation
EZT-570i User Manual Figure 1-6 Logging Menu Navigation Screens Menu The “Screens” menu provides navigation back to the main menu screen. Edit Menu The “Edit” menu provides access to the history files, file utilities and FTP file transfer settings. DataLogging Menu The “Datalogging”...
Page 12: Print Features
The “Setup” menu provides access to the maintenance monitors and system settings. I/O Menu The “I/O” menu provides configuration access to the EZT-570i’s digital and analog inputs and outputs. Help Menu The help menu provides simple help regarding settings and use of screen parameters as well the current software version numbers under “About EZT-570i”.
Page 13: Figure 1-8 Print Driver Notification
“hot swapping” at any time during the EZT-570i’s operation. The EZT-570i will alert the user to any problems during the print operation. After a print error (printer not connected or bad cable), the EZT-570i will return to its normal operation after alerting the user.
Page 14: Multi-Lingual Voice Assisted Help
By connecting headphones or amplified speakers (typical PC speakers) to the audio jack of the EZT-570i, the EZT will read the help file to the user in the selected language. This allows the user to view the screen and listen to the help at the same time.
Page 15: Monitoring
EZT-570i User Manual 2. Monitoring The chamber view screens provide various means of verifying chamber operation and performance. The displays are accessed from the main menu under “View”. 2.1 Loop Views The loop screens provide different viewing options for the control and monitoring of chamber processes such as temperature, humidity, altitude, etc.
Page 16 Once entered, the new set point will be shown in the setpoint entry field. Adjustment of the setpoint is locked out if the EZT-570i is running a profile. The bar graph field is the display area for set point, process variable and percentage of output bar graphs.
Page 17: Dual Loop View
EZT-570i User Manual 2.1.2 Dual Loop View The dual loop view display shows two control loops or monitor inputs at a time. It provides a large standard display for control of both temperature and humidity, common on most environmental test chambers.
Page 18: Trending
Figure 2-4 Loop Trend The trends on the EZT-570i have a drag-n-zoom feature. By using your finger to select an area on the screen, the trend will zoom in on that area. To select a portion of the trend, touch and hold the screen with your finger.
Page 19: Figure 2-5 Trend Setup
EZT-570i User Manual Trend Setup To adjust the displayed variables, range and history period, touch the “Setup Trend” button in the upper right corner of the trend display. The setup values will then be shown below the trend graph. Figure 2-5 Trend Setup Trend Zero The zero value sets the minimum range of the vertical access for the trend variables.
Page 20: Alarm Monitor
The alarm monitor screen displays any current and/or previously silenced alarms according to time and date of occurrence. On each new alarm occurrence, The EZT-570i’s 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 21: Help For Alarms
Help For Alarms The EZT-570i 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 22: Alarm History
EZT-570i. When the email icon is pressed, an “Add Recipients” window will be displayed where the user can select the recipients for the file from any of the email addresses programmed in the EZT-570i.
Page 23: System Status Monitor
EZT-570i User Manual 2.5 System Status Monitor The system status monitor provides non-critical alarm information or alerts to indicate specific operational conditions or limits that have been reached in the chamber’s operation. Figure 2-10 System Status Monitor The LED next to the system status description will be green to indicate that the status is active. Non- critical alarms and alerts that require operator attention will be indicated by an intermittent beeping of the chamber’s audible alarm.
Page 24: Manual Operation
The EZT-570i controller can function as either a static setpoint controller or as a profile controller. The EZT-570i is in static mode (single setpoint operation) when it is not running a profile. This section describes how to operate the chamber in this mode.
Page 25: Event Control (Turning The Chamber On/Off)
EZT-570i User Manual 3.2 Event Control (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 profiles so that they can be turned on and off at set time intervals.
Page 26 0 since the chamber is not capable of removing any more moisture from the air. The EZT-570i 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 27: 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-570i 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 setpoint 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 28: Special Chamber Options
The EZT-570i 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 setpoint to be entered directly in feet.
Page 29: Defrost Operation
3.2.4 Customer Events Option The EZT-570i 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 profile. 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 30: One-Touch Tuning
All of the EZT-570i control loops feature the one-touch tune. No more tuning parameters to adjust or settings to change. The EZT-570i loop controls utilize fuzzy logic to adapt to the process in order to maintain the chamber temperature, humidity, altitude, etc., as close to setpoint as possible. The controls merely need base-line knowledge on the performance of the chamber and test load.
Page 31: Profile Operation
The EZT-570i can store hundreds and even thousands of profiles with up to 99 steps in each profile. This section covers the use and operation of the EZT-570i profiler. To access profile utilities, select “Profile Entry” from Profiles menu.
Page 32: Selecting Step Events
EZT-570i User Manual New Profile: Clears any existing profile entry data so that a new profile can be entered. Insert Step: Inserts a step into the profile at the current step number. Delete Step: Deletes the current step. Copy Step: Copies the current step data.
Page 33: Selecting Guaranteed Soak (Gs) Events
A profile 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-570i reaches the step, it will wait for the input to change state before continuing the step.
Page 34: Figure 4-4 Profile Wait For Input
EZT-570i User Manual Figure 4-4 Profile Wait For Input The setpoint entry for a “wait for” is critical for the “wait for” loop or monitor to operate correctly. During the wait state, the selected process input must arrive at or cross the setpoint in order for the profile to resume operation.
Page 35: Setting Setpoints And Step Time
EZT-570i User Manual 4.1.4 Setting Setpoints and Step Time To enter the set point for a loop, select the loop by touching its name in the table. The selected loop will be highlighted in blue. The loop’s set point will then be available for edit and the current value displayed in the setpoint entry field.
Page 36: Using Jumps
EZT-570i User Manual 4.1.5 Using Jumps The jump allows the profile 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 profile will first execute the step as a normal step; however, once the step time is complete, the profile will jump to the specified “jump step”...
Page 37: Autostart
EZT-570i User Manual 4.2 Autostart Autostart is used to start a profile on a specified date or day, and time (of a 24-hour-clock). The autostart settings are stored with the profile. To enter the desired start date or day, select “Profile Auto Start”...
Page 38: Guaranteed Soak Limits
EZT-570i User Manual 4.3 Guaranteed Soak Limits To access the guaranteed soak limits, select “GS Soak Limits” from the profile Screens menu. The soak limits screen is used to set the control tolerance for guaranteed soak steps when in profile operation.
Page 39: Plot Profile
Views menu. Figure 4-8 Profile Plot The EZT-570i will automatically generate a graphical representation of your profile and display it on the screen. The Y-axis auto-scales to fit the range of setpoints entered in the profile. The X-axis auto-scales to the total time duration of the profile.
Page 40: Start/Stop Profile
EZT-570i User Manual 4.5 Start/Stop Profile To start a profile, it must first be loaded into the EZT-570i’s CM. In order to do this, you must run the selected profile by selecting “Run Profile” from the profile Run menu. Upon doing so, the EZT-570i will automatically display the Profile Status View screen. At the bottom of the screen, there will be an entry field to set the step number for the profile to start on (default is step 1) and a “Start”...
Page 41: Hold/Resume A Profile
EZT-570i User Manual 4.5.1 Hold/Resume a Profile At any time during the operation of a profile, the profile can be manually put into hold. This stops the profile timer; however, the chamber continues operation under the current step settings at the time the profile was put into hold.
Page 42: Profile Status View
EZT-570i User Manual 4.6 Profile Status View The profile status view provides all information regarding the operation of the current profile. It can be accessed from the main Profiles menu as well as the profile Screens menu. Figure 4-11 Profile Status View Profile Status: Displays the current operating mode of the profile (ramp, soak, etc.).
Page 43: Profile Worksheet
4.7 Profile Worksheet This table can be used as a template for creating profiles prior to entering them on the EZT-570i. It can also be used as a tool for quick checks to make sure all of the entries were made correctly.
Page 44: Frequently Asked Questions About Profiles
3. Why does the profile not ramp to the set points in the first step? The profiler in the EZT-570i was designed to operate the chamber based on the defined profile. Since the chamber can be at random setpoints when a profile is started, this could cause the chamber to not follow the selected profile properly or the same each time it is run.
Page 45 EZT-570i User Manual 6. Why is the profile not coming out of a Wait For? 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, the input must reach and/or exceed the wait for setpoint.
Page 46: System Setup
The power recovery settings direct the EZT-570i’s response to the interruption of electrical power. The EZT-570i’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 47: Setpoint Limits
EZT-570i User Manual Hold Select hold to have the chamber return to operation at the same point it was prior to the power outage. If a profile was running, the profile will still be active; however, it will remain in hold until manually set to continue.
Page 48: Event Tagnames
Once all changes have been made, press the “Accept” button to begin using the new event names. If the changes are not accepted, the new tag names will not be used and the EZT-570i will continue to use the previous event names.
Page 49: Process/Alarm Tagnames
Once the change is complete, press the “Set” button to save the changes to memory and begin using the new tagname and/or alarm message. If the changes are not accepted, the new descriptions will not be used and the EZT-570i will continue to use the previous labels.
Page 50: Alarm Settings
EZT-570i User Manual 5.5 Alarm Settings The EZT-570i 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 51 Output Assignment If the EZT-570i is equipped with the customer event option, the alarm can be assigned to one of the event outputs. Utilizing the “close on alarm” or “open on alarm” mode settings, the event output will turn on and off with the alarm it is assigned to.
Page 52: Product Control
EZT-570i User Manual 5.6 Product Control If the chamber is equipped with a product control loop, this screen will be accessible from the System Setup menu. Figure 5-6 Product Control Product control is a control strategy in which one control loop provides the setpoint for another loop.
Page 53: Using Product Control
EZT-570i User Manual Process: This mode uses the lower and upper setpoints as the upper and lower range of the air temperature setpoint. The output of the product control loop is then used to calculate a linear setpoint between these two values in order to provide the setpoint for the air temperature loop.
Page 54: Implementing Product Control On "Dead Loads
EZT-570i User Manual 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 55: Implementing Product Control On "Live Loads
EZT-570i User Manual accurate control method throughout the product’s test range. Knowing what values to set for the lower and upper setpoints may require some trial and error. A good starting point is to run a simple air temperature control test where you set the air temperature setpoint (no product control) to the upper test setpoint and then the lower test setpoint in order to see how the product responds to the changing air temperature.
Page 56: Considerations When Applying Product Control
EZT-570i User Manual increase the rate at which heat is pulled from the product in order to compensate for its internal heat generation. Process Control Process control also operates in the same manner for live loads as dead loads. However, due to the fact that the product is generating heat, process control is typically unstable and produces undesirable results with fluctuations and oscillation in temperature control.
Page 57: Condensation Control
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-570i is equipped with the input monitor option, the additional inputs will be listed for selection.
Page 58: 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-570i will monitor the conditions of operation and automatically start defrost based on the parameters the user has entered.
Page 59: Web Server/Modbus/Vnc
EZT-570i on the serial communications link. Valid addresses are 1 to 31. The parity setting allows the EZT-570i’s serial port to be set for even, odd or no (none) parity. The Modbus Timeout setting is used to adjust the timeout of the EZT-570i’s serial interface.
Page 60: Email
EZT-570i User Manual 5.10 Email The EZT-570i email server has the ability to send alarm messages to email and SMS addresses. Up to 30 addresses can be programmed into the system. Each one can be configured to receive emails, SMS text messages or both. Whenever an alarm occurs, the EZT-570i will send an alert to the specified address for each user in the list.
Page 61: Email Addresses
Selecting the “Email Addresses” tab allows the user to view the list of addresses entered into the EZT-570i. By using the scroll bar at the bottom of the list box, you can view the name, addresses, and notification selections for each user. To delete a user, touch the name of the user in the list box and press the “Delete”...
Page 62: Sending Email Messages
EZT-570i as would appear on the alarm monitor screen of the EZT-570i. If the mail server is down, or the EZT-570i is not connected to the network, the message will not be sent and a local alarm on the EZT-570i will indicate a transmission failure.
Page 63: Figure 5-12 Send Email Message
EZT-570i User Manual Figure 5-12 Send Email Message Press the “Compose” button to create a brief message using the pop-up, text keypad (up to 100 characters). The completed message will be shown in the message window. Press the “Send” button to access the “Select Email Address” window and select the email recipients you wish to send the message to.
Page 64: Security
EZT-570i User Manual 6. Security The EZT-570i provides an enhanced array of security features. The 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 levels of users are provided which include system, operator, supervisor and administrator levels.
Page 65: Security Setup
ID, full name and password (no spaces allowed with a 4 character minimum and 16 character maximum). If the password and confirm password entries do not match, or the user ID is already used, the EZT-570i will alert the operator and not accept the entry. Figure 6-1 Security (Add User) Check the password aging checkbox if you wish to enable password aging for the user.
Page 66: User List
EZT-570i User Manual 6.1.2 User List The “Users” tab provides the administrator the ability to view information on each user entered into the system. Password information is not available. The user can be deleted from this tab and the password for each user can also be changed from this area.
Page 67: User Rights
Cincinnati Sub-Zero’s Service Department for support. 6.1.3.1 User Group Access Rights The following table describes the available user rights provided by the EZT-570i security module, what permissions are granted by them and where they apply. User Right Menu Location...
Page 68 Access Security Security\Setup applies to security setup Exit Application Setup\Offline\Exit Application prevents EZT-570i application from being stopped Condensation Settings Setup\Condensation Control configure ramp rate limit, monitor mode and input selections Defrost Settings...
Page 69: Security Options
(security must be enabled for this feature). Enable\Disable Security This is the global setting that turns the EZT-570i security system on or off. 6.2 User Log On/Off When security is enabled, a user must log on to the system in order to gain access to privileged items.
Page 70: View Audit Trail
EZT-570i. When the email icon is pressed, an “Add Recipients” window will be displayed where the user can select the recipients for the file from any of the email addresses programmed in the EZT-570i.
Page 71: Logging
EZT-570i User Manual 7. Logging The EZT-570i logging features are accessed via the “Log” menu item. The system data logging provides the ability to select individual points for logging, view datalog files and start/stop logging operations. The logging ability of the EZT-570i provides an easy-to-use, convenient method to obtain electronic data without the need for additional equipment.
Page 72 FTP file transfer in order to be viewed remotely on a PC. These files are also not able to be digitally signed by the EZT-570i. If the files are to be digitally signed, this must be done using the data viewer program on a PC.
Page 73: Select Points For Logging
Use the checkbox to enable/disable a point for logging. When selections are completed, press the “Accept” key to write the point selection to memory. This is important so that the EZT-570i saves the settings for power-up operation. New settings will not take effect until the “Accept” button is pressed.
Page 74: History Files
If a data file is too large for the EZT-570i’s viewer, a message box will indicate that the file must be retrieved by using the FTP server or a memory stick for remote viewing on a PC. If...
Page 75: Plotting Historical Data
History View Channel Setup screen. If a file has not been opened or data points have not been assigned for the plot, the EZT-570i will alert the user to make the necessary selections prior to creating the plot. The ‘X’ and ‘Y’ axis scales are set to auto-scale based on current values for each plot so no user action is required.
Page 76: View Averages Report
EZT-570i User Manual 7.3.2 View Averages Report The “View Averages Report” provides a text report that displays the average value over time for each channel selected in the “History Plot Channel Setup” screen for the period of time specified for the plot.
Page 77: File Utilities
To copy files to the USB memory stick: Insert the USB memory stick into the EZT-570i’s USB port. Select the file type you wish to copy from the “Select Export Type” drop down menu. Available file selections are profile files, alarm files, audit trail files and data files.
Page 78 “.evt” file will be empty. When files are deleted from the EZT-570i, they are gone and can not be retrieved. Once again, do not edit, move or delete any other files from the internal compact flash card unless using the EZT- 570i “File Utilities”.
Page 79: Advanced File Utilities
“Internal Files” list box. Depending on the number of files stored in memory for the selected file type, it can take upwards of 30 seconds for the EZT-570i to list all of the files. Once the files have been loaded, files can be individually selected for transfer to the USB memory stick by selecting it from the list and pressing the “Add”...
Page 80: Ftp\Wan Setup
Figure 7-8 FTP\WAN Setup FTP IP Add: This field is used to enter the IP address of the FTP site for which the EZT-570i is to send the files to. The field allows for a maximum of 35 characters. User Name: This field allows you to enter a user name for FTP site access with a maximum of 35 characters.
Page 81 If the files already exist on the FTP site, they will be overwritten on the subsequent back-up. If the FTP site is down, or the EZT-570i is not connected to the network, a local alarm message on the EZT-570i will indicate a transmission failure.
Page 82: Add\View Operator Events
EZT-570i User Manual 7.6 Add\View Operator Events The “Add\View Operator Events” screen allows the user to add operator events to the running data log file and view any operator events currently associated with a loaded historical data file. Figure 7-9 Add\View Operator Events When a historical data file is loaded, the Add\View Operator Events screen will display any operator events that were written to the file.
Page 83: Add\View Digital Signatures
To verify a digital signature and insure that the data file has not been altered, touch a signature in the list box and press the “Verify” button. The EZT-570i will compare the signature to the log file to see if any alterations to the data have been made. The EZT- 570i will then indicate if the signature is valid or not.
Page 84: System Maintenance
EZT-570i User Manual 8. System Maintenance System maintenance options are available from the Chamber Setup menu. To access system maintenance, select System Maintenance from the chamber setup menu. Upon selecting system maintenance, an alert will tell the user that the chamber will be taken off line.
Page 85: Degrees C\F Selectio
EZT-570i User Manual 8.1 Degrees C\F Selection The EZT-570i can display temperatures in either degrees C or F. To change the units, select “Degrees C\F” from the Setup menu. Figure 8-1 Degrees C/F Selection Press the button to select the desired units. A message box will appear to acknowledge the units change.
Page 86: Maintenance Items
The service monitors provide service interval alerts and life total service numbers for chamber components and systems. The service intervals are set by CSZ at the optimum period for system performance and reliability. When a component exceeds its service interval, a notification alarm can be generated.
Page 87: Maintenance Items Setup
EZT-570i User Manual 8.2.1 Maintenance Items Setup The service monitor display options as well as alert action can be adjusted from the “Maintenance Items Setup” screen. Figure 8-3 Service Monitor Setup Elapsed Service or Totals: Selects which count is to be displayed on the Service Monitor screen.
Page 88: Set Date\Tim
8.3.1 Time Options Select the “Time Options” tab to configure the atomic clock settings. If the EZT-570i is connected to the internet, these settings can be used to have the EZT-570i automatically synchronize its time with one of the many nationally provided time servers.
Page 89: Dst Settings
The EZT-570i will synchronize its time with the selected national time server at 2:00AM each day. If the EZT-570i is not connected to the internet, a local alarm message will occur, “NTS Ping Failed. Check Cable”, to indicate that the time server could not be located.
Page 90: Touch Screen Calibration
After extended use and many hours of operation, it may be necessary to recalibrate the touch screen of the EZT-570i. A typical sign that the screen may be out of adjustment, is inaccurate responses when attempting to press buttons or adjust fields on the display. The calibration utility is provided in order to readjust the screen when this happens.
Page 91: Lcd Settings
EZT-570i application to resume normal operation. 8.4.1 LCD Settings The “CECP” utility also provides access to the backlight adjustment of the EZT-570i touch screen. To access these settings, perform the procedure above to access the CECP utility; however, do not perform the calibrate touch procedure.
Page 92: Help\Voice Assistance
EZT-570i User Manual Once the selection has been made, press the ‘OK’ button to accept the entry and close the Screen Saver window. Press the “Quit” icon to exit the CECP utility and return to the EZT-570i application to resume normal operation.
Page 93: Special Settings
EZT-570i User Manual 8.6 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 94: I/O
EZT-570i User Manual 8.7 I/O The “I/O” menu provides access to EZT-570i’s optional analog and digital inputs and outputs. The available selections under this menu are dependant upon the options present on the chamber. 8.7.1 Control Inputs The analog inputs associated with the control loops, i.e., temperature, humidity, product, etc., are not accessible through this menu item.
Page 95: Refrigeration Monitor Option
8.7.3 Analog Inputs The EZT-570i can have up to five analog inputs which are used for remote setpoint inputs. This menu item will appear if your chamber is equipped with the remote setpoint option. With this option, electrical connections are provided on the chamber for external connection to each available input.
Page 96: Enabling Remote Setpoint Inputs
Once an analog input is configured for a particular loop, it must be enabled for use. By default, the EZT-570i uses the setpoint entered manually from the loop view screen, or from an operating profile. The remote setpoints are enabled through events.
Page 97: Analog Input Wiring
Use care when connecting remote signal generators and make sure they can not overload the EZT-570i’s inputs. Configure the EZT-570i’s input for the desired signal level and cycle power prior to connecting the source signal or damage to the input may result.
Page 98: Analog Outputs
8.7.4 Analog Outputs The EZT-570i can have up to four analog outputs which can be used to retransmit setpoints, 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 I/O menu list. With this option, electrical connections are provided on the chamber for external connection to each available output.
Page 99 For example, an application requires a 0-10V output signal from the temperature loop for a cooling output of 0 -100%. On the EZT-570i, 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 “Output Min” to 0 and the “Output Max”...
Page 100: 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-570i. 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 101: Digital Inputs
8.7.5 Digital Inputs The EZT-570i digital input option provides eight digital inputs which can be used to start and stop a profile, hold a profile or control optional event outputs. If your chamber is equipped with the digital input option, this menu item will be appear in the I/O menu list. With this option, electrical connections are provided on the chamber for external connection to each input.
Page 102 EZT-570i User Manual The input function defines what event is to happen when the input meets the “on” state as defined by the transition mode. Note that the profile functions are defined by this transitional state; however, the output control functions are held, not transitional.
Page 103: Digital Input Wiring
Doing so can cause irreparable damage to the EZT-570i 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 104: Digital Outputs
8.7.6 Digital Outputs The EZT-570i 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 105: Dut Safety Relay Output Wiring
EZT-570i User Manual Input Alarm: When selected, the output can be controlled by an input alarm. The input alarm must be configured to control the output. See Section 5.5, Alarm Settings, for information on assigning the alarm to the event output. This output mode provides a way of controlling devices at specific temperature or humidity levels for example.
Page 106: Figure 8-21 Digital Output Wiring
EZT-570i User Manual Figure 8-21 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 107: Communications
This section covers the connection to, and basic use of, the EZT-570i communication interfaces. As a standard, the EZT-570i is equipped with both EIA-232 and EIA-485 serial interfaces as well as the standard network communications port. The EZT-570i can also provide an IEEE-488 (GPIB) communication port through the use of an optional interface converter.
Page 108: Serial Communications
Figure 9-2 Modbus Settings The EZT-570i is set by default for an address of 1, even parity and 200ms timeout 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-570i User Communications Reference Manual for instructions and information on command structure and protocol usage.
Page 109: Connections
9.1.2 EIA-232 Connections To connect the EZT-570i 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 in the fact that the transmit and receive wires are reversed. If one is not available, a cable can be fashioned rather easily.
Page 110: Connections
Figure 9-3 Serial Port Mode Once the change is made, press the “Quit” icon to exit the CECP utility and return to the EZT-570i application to resume normal operation. The EZT-570i is now set to use EIA-485 for serial communications.
Page 111 EZT-570i 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 112: 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-570i’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-570i.
Page 113: 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-570i controller. These commands are listed in the table below. All commands are generated using standard ASCII text characters.
Page 114: Ethernet Communications
570i is part of the network or that data is being transmitted over the Ethernet link. Remember that power must be cycled to the EZT-570i after it is connected to the network in order to automatically obtain its IP address. Without a valid IP address, the EZT-570i will not be part of your...
Page 115: Guidelines Of Smart Networking Practice
The flexibility and convenience that this provides makes it a very desirable feature for new equipment. The EZT-570i provides this ability, but there are considerations that should be taken by the end user to protect their equipment and investment.
Page 116: Obtaining The Ezt-570I's Mac Address
The “MAC Address” will be shown near the bottom of the system information window. When finished, press the “OK” button to close the window and then touch the “Quit” icon to return to the EZT-570i application to resume normal operation.
Page 117: Figure 9-5 Exit Application
EZT-570i. From the setup menu under system maintenance, select “Exit Application”. Figure 9-5 Exit Application Press the “Exit Application” button. This will stop the EZT-570i application and take you to the Windows CE desktop. From the desktop, touch the narrow, gray bar at the bottom of the screen to show the taskbar.
Page 118: Figure 9-7 Network And Dial-Up Connections
EZT-570i User Manual Next, press the “Start” button and select “Settings” then “Network and Dial-up Connections” to bring up the connections window. Figure 9-7 Network and Dial-up Connections From the “Connection” window, select the current network connection by “double-clicking” the connection icon to bring up its property window.
Page 119: Figure 9-9 Ethernet Driver
“Hide Input Panel”. DO NOT cycle power at this time. You must first save these changes to the registry or they will be lost and the EZT-570i will not use the IP address you specified to connect to the network.
Page 120: Using The Web Server
‘X’ button in the top right of the window and then touch the “Quit” icon in the CECP utility. Cycle power to the EZT-570i and when it boots up, it will be running with the new network configuration settings.
Page 121 The use of the EZT-570i web server is the responsibility of the end user. To access and view the EZT-570i’s status web page, enter the following link in your PC’s browser address window: http://”IPaddress”/ezt.html...
Page 122: Using The Vnc Server
VNC viewer and enter the IP address for the EZT-570i in the “Server” field (see following examples). Intranet Example If the IP address of the EZT-570i is 192.168.3.102 and the configured VNC Address is 0, in the PC’s VNC Viewer server field, enter “192.168.3.102:0” to access the EZT-570i (address 0 relates to port 5900, address 1 to port 5901, etc., which is the port opened by the VNC interface in order to allow...
Page 123 Once the connection is established, the current EZT-570i display will be shown on your desktop. The image will be a duplicate of what is on the EZT-570i. As you manipulate the screen, the display of the EZT-570i will also be manipulated so that any local operator would be able to see what is happening and vice versa.
Page 124: Recommended Vnc Viewer Settings
These functions are NOT compatible with the EZT-570i. Any attempt to use them may lock up the EZT-570i’s display and will require power to be cycled in order to reboot the system. Cincinnati Sub-Zero can not take responsibility for other manufacturer’s software and will only provide support, within CSZ’s discretion, for...
Page 125 This will set the preferred options selections to the default start settings for the VNC viewer. Once complete, press the “OK” button to exit the options window. The VNC viewer will then connect to the EZT-570i using the optimized settings each time it is started.
Page 126: Diagnostics
EZT-570i 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 Cincinnati Sub-Zero’s Service Department.
Page 127: Alarm Codes And Troubleshooting
If intermittent alarm (can be cleared and returns at random intervals), then remote PC communicating too fast with EZT-570i. Reduce rate at which PC sends commands to the EZT-570i or reduce number of communication connections. Random alarms when communications are being used are not a sign of a hardware problem.
Page 128 FTP! Check cable or server down. Indicates that the FTP back-up attempt of the data files failed. Verify that the EZT-570i 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 129 EZT-570i User Manual Alarm Monitor Description Corrective Action Unit will not run with pumpdown disabled. “Input” SENSOR BREAK Check sensor wiring for indicated “input”. Verify lead connections. If sensor requires power, i.e., humidity, altitude, etc.,, verify power to sensor. Replace sensor.
Page 130 (no audible alert is associated with this indicator) RH HI DEWPOINT LIMIT EZT-570i 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 131: Service Monitors
EZT-570i 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 132 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 133: Appendix
EZT-570i User Manual Appendix...
Page 134: Common Terms And Definitions
EZT-570i 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 135 EZT-570i 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 setpoint, the limit controller interrupts power through the load circuit.
Page 136 EZT-570i User Manual List of Figures Figure 1-1 DUT Safety Connections...................... 5 Figure 1-2 Touch Screen Interface ......................7 Figure 1-3 Main Menu Navigation ......................8 Figure 1-4 Profile Menu Navigation ....................... 9 Figure 1-5 Setup Menu Navigation ...................... 10 Figure 1-6 Logging Menu Navigation ....................
Page 137 EZT-570i User Manual Figure 6-1 Security (Add User) ......................65 Figure 6-2 Security Users List ......................66 Figure 6-3 Change User Password ..................... 66 Figure 6-4 Security User Rights ......................67 Figure 6-5 Security Options ......................... 69 Figure 6-6 Audit Trail Viewer ....................... 70 Figure 7-1 Start/Stop Datalogging .......................

CSZ EZT-570i User Manual

Ezt-570I

1 Overview

2 Monitoring

3 Manual Operation

4 Profile Operation

5 System Setup

6 Security

7 Logging

8 System Maintenance

9 Communications

10 Diagnostics

Appendix

List of Figures

Quick Links

Chapters

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Summary of Contents for CSZ EZT-570i

Table of Contents