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CSZ EZT-570S Technical Manual

Distributed control system
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EZT-570S
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EZT570S Technical Manual RevC.doc
(450 V1.2 / 730 V1.0)

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Summary of Contents for CSZ EZT-570S

  • Page 1 EZT-570S Technical Manual EZT570S Technical Manual RevC.doc (450 V1.2 / 730 V1.0)

  • Page 2: Table Of Contents

    Transfer System Logic Flow ..................30 REMOTE PC COMMUNICATION PROBLEMS ........... 32 Serial Communications Troubleshooting ................33 5.1.1 CSZ EZ-View Software ....................34 GPIB Communications Troubleshooting ................35 Ethernet Communications Troubleshooting ..............36 USER INTERFACE (HMI) TROUBLESHOOTING ........37 HMI Troubleshooting and Corrective Actions ..............39 6.1.1...
  • Page 3 Critical Chamber Alarms ....................92 8.12 Critical Refrigeration Alarms ..................... 93 8.13 Non-Critical Alarms ......................94 8.14 Maintenance Alarms ......................95 8.15 Special Settings Tagnames ....................96 8.16 Completing EZT-570S Configuration ................97 Appendix List of Figures List of Tables...

  • Page 4: Overview

    EZT-570S Technical Manual 1. Overview This technical manual has been written to aid in the troubleshooting of chamber operational issues and/or malfunctions. Note that not all options and/or features discussed in this guide may be available or applicable to the particular chamber that is being serviced. It is highly recommended that you read this material thoroughly prior to performing any diagnostic service in order to better assist you in locating the section(s) that apply to your situation.

  • Page 5: Where Do I Begin

    EZT-570S Technical Manual 2. Where Do I Begin? The EZT570S is a Distributed Control System (DCS) that uses different hardware layers to perform the various functions needed to operate the chamber. These include the user interface (HMI), the control module (CM) which handles system monitoring and protection, as well as process control (9300 or C21 controllers).
  • Page 6 This section is for experienced service personnel only. Changing certain settings from the original factory settings can cause damage to equipment and/or injury to personnel. CSZ is not responsible for damages or losses attributed to unauthorized changes of these settings.

  • Page 7: Resolving "Loop Comms Failure" Alarms

    This is due to the temperature compensation algorithm in the EZT-570S. In this case, it is only necessary to verify that the set point changes.

  • Page 8: Chamber Operating Problems

    EZT-570S Technical Manual 4. Chamber Operating Problems This section provides direction on troubleshooting chamber operation when no alarm condition is present. It is broken into sub-sections for temperature, humidity, altitude control, etc. Locate the section that most closely relates to the problem at hand in order to help diagnose and solve it.

  • Page 9: Conditioning System

    EZT-570S Technical Manual 4.1 Conditioning System When the main chamber event is turned on, whether it is a standard ZP, TSB or VTS for example, temperature control is the primary function. The air circulator/bath output will turn on and enable the heating/cooling logic.

  • Page 10: Defrost Operation

    EZT-570S Technical Manual After the stager start delay, system 2’s output (Q4) will turn on and the rate master control output (Q40) will turn off. The cooling output of the 9300 or C21 will now be used to control system 2 cooling solenoids.

  • Page 11: Reach-In Stability Chamber Defrost Operation

    EZT-570S Technical Manual 15 minute timer in the EZT. Defrost will continue for another 15 minutes to insure that the coil is completely defrosted. Once the 15 minute defrost time has elapsed, pre-chill is started. In pre-chill, the defrost solenoid will be turned off and the minimum heating/cooling output (Q41) will be turned on.

  • Page 12: Alternating Defrost

    EZT-570S Technical Manual 4.1.4.1 Alternating Defrost When alternating defrost is selected for redundant refrigeration systems, and defrost has been initiated on the currently running system, system ‘A’ for example, the EZT will start system ‘B’ prior to starting the defrost cycle. This minimizes the change in chamber temperature by allowing system ‘B’...

  • Page 13: Conditioning System Failures And Corrective Actions

    EZT-570S Technical Manual 4.1.5 Conditioning System Failures and Corrective Actions SYMPTOM PROBABLE CAUSES CORRECTIVE ACTIONS Chamber air circulator(s) not turning Chamber event not turned on. Turn on chamber event. Conditioning system disabled (altitude Altitude above controllable limit for chambers). temperature. Decrease altitude or turn off altitude system.
  • Page 14 EZT-570S Technical Manual SYMPTOM PROBABLE CAUSES CORRECTIVE ACTIONS tripped. refrigeration system/injection valve operation. Chamber in humidity mode. Check humidity system type. System 2 disabled for single stage humidity operation. Refrigeration system not enabled or Check configurator settings. stager start delay time not met.

  • Page 15: Conditioning System Logic Flow

    EZT-570S Technical Manual 4.1.6 Conditioning System Logic Flow...
  • Page 16 EZT-570S Technical Manual...
  • Page 17 EZT-570S Technical Manual The logic for the system ‘B’ refrigeration system is the same as that shown in the chart above for a standard chamber with a single refrigeration system. The logic is merely duplicated and tied to different outputs for the control of the second system.

  • Page 18: Humidity System

    EZT-570S Technical Manual 4.2 Humidity System When the humidity system is enabled, the humidity system output (Q32) will turn on. This turns on water supply solenoids and atomizer air compressor if applicable. If the refrigeration system is set to run in single stage mode when humidity is on, system 2 compressor (Q4) will then be turned off as long as humidity is on.

  • Page 19: Humidity System Failures And Corrective Actions

    EZT-570S Technical Manual 4.2.1 Humidity System Failures and Corrective Actions SYMPTOM PROBABLE CAUSES CORRECTIVE ACTIONS Humidity system not turning on. Humidity event not turned on. Turn on humidity event. Air temperature outside of humidity Change temperature set point to control range.

  • Page 20: Humidity System Logic Flow

    EZT-570S Technical Manual 4.2.2 Humidity System Logic Flow...

  • Page 21: Auxiliary Cooling System

    EZT-570S Technical Manual 4.3 Auxiliary Cooling System The auxiliary cooling system can be installed as a boost system or a low range control system. When set as a boost, it will assist the refrigeration system in lowering chamber temperatures quickly. As a control, it will take over once the low temperature limit of the refrigeration system is reached and continue cooling the chamber down to an ultimate low of the auxiliary cooling medium (LN2 or CO2).

  • Page 22: Auxiliary Cooling System Logic Flow

    EZT-570S Technical Manual 4.3.2 Auxiliary Cooling System Logic Flow...

  • Page 23: Dry Air Purge System

    EZT-570S Technical Manual 4.4 Dry Air Purge System The dry air purge system can work independently or as part of the humidity system. If the chamber is a standard dry unit (non humidity) or the humidity system is off, the dry air purge output (Q34) will turn on when the chamber and purge events are turned on.

  • Page 24: Dry Air Purge System Logic Flow

    EZT-570S Technical Manual 4.4.2 Dry Air Purge System Logic Flow...

  • Page 25: Altitude System

    EZT-570S Technical Manual 4.5 Altitude System When the altitude system is enabled, the altitude system output (Q45) will turn on. This turns on the vacuum pump and any isolation valves to seal the chamber. The maximum dive output (Q46) and maximum vacuum output (Q47) are controlled by the configurator settings.

  • Page 26: Altitude System Logic Flow

    EZT-570S Technical Manual 4.5.2 Altitude System Logic Flow...

  • Page 27: Fluid Systems

    EZT-570S Technical Manual 4.6 Fluid Systems Fluid systems can vary considerably between different types of chambers. LC’s, TSB’s and explosion proof chambers are typical candidates for fluid systems. For LC’s and TSB’s, it is the only means of heating and cooling the product under test.

  • Page 28: Fluid System Failures And Corrective Actions

    EZT-570S Technical Manual 4.6.1 Fluid System Failures and Corrective Actions SYMPTOM PROBABLE CAUSES CORRECTIVE ACTIONS Low or no fluid flow. Blockage in piping/closed valves. Locate blockage and remove/open valves. Pressure relief valve bypassing fluid. Check pump pressure. Adjust/replace relief valve.

  • Page 29: Transfer Mechanism

    EZT-570S Technical Manual 4.7 Transfer Mechanism Transfer mechanisms are used on thermal shock chambers (DTS/VTS/TSB) to move a basket loaded with test product from one extreme temperature to another. These systems may utilize a single motor drive or one or more air cylinders to move the basket between the different temperature zones.

  • Page 30: Transfer System Logic Flow

    EZT-570S Technical Manual 4.7.2 Transfer System Logic Flow...
  • Page 31 EZT-570S Technical Manual...

  • Page 32: Remote Pc Communication Problems

    Figure 5-1 Communication Settings For more detailed information on communication format, commands and functionality of the 232/485 serial interfaces, see the EZT-570S User Communication Reference Manual. When connecting remote devices to the EZT’s communication ports, make sure that the equipment is properly grounded as required by the manufacturer’s instructions with a good earth ground.

  • Page 33: Serial Communications Troubleshooting

    EZT-570S Technical Manual 5.1 Serial Communications Troubleshooting The EZT-570S allows a user to remote monitor and control chamber operations over an RS232 or RS485 communications connection. Only one connection, RS232 or RS485 may be used at a time. The Modbus settings in the EZT allow the controller address and parity of the communications port to be changed.

  • Page 34: Csz Ez-View Software

    PC. EZT-570S series controllers are enabled (turned on) sequentially starting with address 1 through 31 which must match the address entered in each EZT-570S. Each EZT must also have its parity set to “Even” in order for EZ-View to communicate with EZ-View.

  • Page 35: Gpib Communications Troubleshooting

    EZT-570S Technical Manual 5.2 GPIB Communications Troubleshooting The GPIB communication option is provided through the use of ICS's Model 4899 GPIB-to-Modbus Controller. The 4899 is an IEEE 488.2 compatible GPIB device that can control Modbus slave devices. It accepts simple GPIB bus commands that are used to create Modbus RTU packets that are transmitted serially to the Modbus slave devices, in this case, the EZT.

  • Page 36: Ethernet Communications Troubleshooting

    The EZT-570S provides the ability to remotely control and monitor chamber operations over a network. To connect the EZT-570S to a network, connect the EZT’s Ethernet port to an available network port using a standard CAT5 cable connection. The EZT will be automatically assigned an IP address via the network’s DHCP server.

  • Page 37: User Interface (Hmi) Troubleshooting

    The HMI and EZT-570S application do not operate or perform any control tasks for the chamber. They are used for user input, information gathering and monitoring of chamber operations only. The information is exchanged over an RS232 serial communication link between the HMI and the EZT- 570S control module (CM) mounted on the electrical sub-panel.
  • Page 38 EZT-570S Technical Manual EZT-570S 7” Interface...

  • Page 39: Hmi Troubleshooting And Corrective Actions

    EZT-570S Technical Manual 6.1 HMI Troubleshooting and Corrective Actions SYMPTOM PROBABLE CAUSES CORRECTIVE ACTIONS 1) Black Screen “PWR” indicator is off. Power is off. Turn on power. Wrong polarity of power source. Check/correct polarity of power source. “PWR” indicator is on.

  • Page 40: Factory Setup

    6.1.1 Factory Setup The SD card contains a “Factory Setup” program that automatically installs the EZT-570S application and all support files on the HMI. This program can be run to clear all current settings and installation files from the HMI and replace them with the default files and folders contains on the SD card.
  • Page 41 From the “My Device” folder, locate and open the “Storage Card” (SD card) folder. Figure 6-4 My Device The SD card holds a copy of all EZT-570S application and data files. DO NOT alter or delete any files on the SD card. Locate the “EZT570S Factory Setup” application and run the application.
  • Page 42 If power is lost during the factory setup, the factory setup program will have to be run again when power is restored. The unit will not operate properly, if at all, unless the factory setup can perform the full system install of the EZT-570S application.

  • Page 43: Touch Screen Calibration

    EZT-570S Technical Manual 6.1.2 Touch Screen Calibration If the touch screen is severely out of calibration it can appear as if the HMI is “locked-up”. It may not respond to touch or will make it impossible to accurately select items in order to navigate to the normal display calibration menu.
  • Page 44 EZT-570S Technical Manual Figure 6-9 System Display Menu Access Click on the “Calibrate Touch” button. You will be prompted with a message stating “The application will be disabled. Yes or No?”. Click on “Yes” to start screen calibration. Figure 6-10 Display Settings Once the calibration screen is shown, use a stylus or the tip of a plastic pen cap, touch and hold on the center of each point marked by the crosshairs on the screen.

  • Page 45: Deciphering Ezt Input/Output (I/O) Operation

    EZT-570S Technical Manual 7. Deciphering EZT Input/Output (I/O) Operation The inputs and outputs of the EZT570S are predefined for specific functions on all standard chamber designs. This requires that certain inputs and outputs perform different functions based on the chamber type. This section covers all of the standard inputs and outputs of the system and their use based on the chamber type.

  • Page 46: Standard Input Configuration

    EZT-570S Technical Manual 7.1 Standard Input Configuration INPUT STANDARD CONFIGURATION DUAL REFRIGERATION DTS, VTS, TSB I0000 CHAMBER LIMIT SYSTEM 'A' HEATER LIMIT I0001 PRODUCT SAFETY I0002 MOTOR OVERLOAD SYSTEM 'A' MOTOR OVERLOAD I0003 SYSTEM 1 PRESSURE SAFETY SYSTEM 'A' PRESSURE SAFETY...
  • Page 47 EZT-570S Technical Manual INPUT HALT & HASS REACH-IN STABILITY VIBRATION TABLE I0000 HEATER SAFETY HAMMER TEMPERATURE LIMIT I0001 HIGH/LOW TEMP LIMIT VIBRATION LIMIT I0002 VFD FAULT WATER RESERVOIR LEVEL DOOR SWITCH INPUT I0003 LN2 INHIBIT POWER FAILURE DOOR SWITCH BYPASS...

  • Page 48: Input Description Of Use

    EZT-570S Technical Manual 7.1.1 Input Description of Use Chamber Limit (I0): The chamber limit input is used to indicate that the chamber temperature safety has tripped. This input is active high, i.e., the input must be on in order for the alarm to be indicated. When...
  • Page 49 EZT-570S Technical Manual operating range. This input is active low, i.e., the input must be off in order for the alarm to be indicated. When active (input off), the EZT shuts down the chamber until the alarm is acknowledged (reset button pressed on alarm monitor screen) and the input is on (requires manual reset of high pressure safety).
  • Page 50 EZT-570S Technical Manual on the suction line of system 1 compressor. When the pressure rises, the switch closes and turns on the input. The EZT then turns on the system 1 compressor output (Q3) until the input turns off. When the input turns off, indicating that the compressor has pumped down, the EZT turns off the system 1 compressor output.
  • Page 51 EZT-570S Technical Manual active low, i.e., the input must be off in order for the alarm to be indicated. When active (input off), the EZT shuts down the chamber until the alarm is acknowledged (reset button pressed on alarm monitor screen) and the input is on (automatically resets after built-in timeout period).
  • Page 52 EZT-570S Technical Manual monitor screen) and the input is off (requires manual reset of E- Stop button). Fluid Temperature Safety (I44): The fluid system temperature safety input is used to indicate that the fluid temperature limit has been exceeded (LC chambers).

  • Page 53: Custom Input Description Of Use (Dts, Vts, Tsb)

    EZT-570S Technical Manual 7.1.1.1 Custom Input Description of Use (DTS, VTS, TSB) Basket Left (I6): This control input is used to tell the EZT that the basket (DTS/TSB) is in the left position/hot bath. There is no user indication for this input.

  • Page 54: Custom Input Description Of Use (Dual Refrigeration)

    EZT-570S Technical Manual 7.1.1.2 Custom Input Description of Use (Dual Refrigeration) Sys ‘A’ Hi/Lo Pressure Safety (I3): The system ‘A’ hi/lo pressure safety input is used to indicate that the system 1A or system 2A compressor has exceeded its high or low pressure operating range.
  • Page 55 EZT-570S Technical Manual System 1B Pumpdown Switch (I31): This input is a control input for pumpdown (if equipped). There is no user indication for this input. When refrigeration system requires pumpdown, this input is wired to a low pressure switch on the suction line of system 1B compressor.
  • Page 56 EZT-570S Technical Manual Sys ‘B’ Protection Module (I37): The system ‘B’ compressor protection module input is used to indicate that the system 1B or system 2B compressor protection module has detected an improper phase condition/loss or the compressor motor windings have overheated (if equipped). This input is active low, i.e., the input must be off in order for the...
  • Page 57 EZT-570S Technical Manual System ‘B’ Boiler Thermostat (I46): The system ‘B’ boiler thermostat input is only used when there are independent system plenums since this usually results in a boiler on each plenum. Thus, this input is used to indicate that the boiler on plenum ‘B’...

  • Page 58: Custom Input Description Of Use (Halt & Hass)

    EZT-570S Technical Manual 7.1.1.3 Custom Input Description of Use (HALT & HASS) Heater Safety (I0): The heater limit input is used to indicate that the chamber temperature safety has tripped. This input is active high, i.e., the input must be on in order for the alarm to be indicated. When...

  • Page 59: Custom Input Description Of Use (Reach-In Stability)

    EZT-570S Technical Manual 7.1.1.4 Custom Input Description of Use (Reach-In Stability) Water Reservoir Low (I2): The water reservoir low input is used to indicate that the humidity system water reservoir is low on water (if equipped). This input is active low, i.e., the input must be off in order for the alarm to be indicated.

  • Page 60: Custom Input Description Of Use (Vibration Table)

    EZT-570S Technical Manual 7.1.1.5 Custom Input Description of Use (Vibration Table) Hammer Temperature Limit (I0): The hammer temperature limit input is used to indicate that the table’s hammer temperature safety has tripped. This input is active high, i.e., the input must be on in order for the alarm to be indicated.

  • Page 61: Standard Output Configuration

    EZT-570S Technical Manual 7.2 Standard Output Configuration OUTPUT STANDARD CONFIGURATION DUAL REFRIGERATION ALTITUDE Q0000 AUDIBLE ALARM Q0001 MAXIMUM COOLING Q0002 AIR CIRCULATORS SYSTEM 'A' CIRCULATORS LOW SPEED FANS Q0003 SYSTEM 1(A) COMPRESSOR Q0004 SYSTEM 2(A) COMPRESSOR Q0005 CHAMBER LIGHT Q0006...
  • Page 62 EZT-570S Technical Manual OUTPUT DTS, VTS, TSB HALT & HASS STABILITY VIBRATION Q0000 DOOR FRAME HEATER Q0001 COOLING ENABLE VIBRATION CONTROL COLD CHAMBER Q0002 CONDITIONING ENABLE VIBRATION ENABLE (DTS CENTER) Q0003 Q0004 HUMIDITY SYSTEM Q0005 Q0006 Q0007 DRY AIR PURGE...

  • Page 63: Output Description Of Use

    EZT-570S Technical Manual 7.2.1 Output Description of Use Audible Alarm (Q0): This output is used to turn the audible alarm on and off under fault conditions. Maximum Cool Enable (Q1): This output is used to enable and disable the maximum cooling solenoids based on the percentage of output set up in the Configurator.
  • Page 64 EZT-570S Technical Manual Chamber Light(s) (Q5): This output toggles on and off to turn the chamber light(s) on and off when the light icon on the HMI is pressed. Window Heater (Q6): This output is used to turn the window heater(s) on and off based on the air temperature set point set in the Configurator.
  • Page 65 EZT-570S Technical Manual Frozen Coil Enable (Q35): This output is used to enable and disable the operation of the low RH/frozen coil components. In normal humidity mode, this output will be of so that the wet coil solenoid can be cycled on and off.
  • Page 66 EZT-570S Technical Manual Cascade Solenoid Control (Q43): The system 1 cascade solenoid control output is used on chambers with rate master refrigeration systems. It is used to disable refrigerant flow to the cascade when running in single stage mode. This output is also used to control cooling of system 2 when in defrost on large horsepower systems.

  • Page 67: Custom Output Configuration (Altitude)

    EZT-570S Technical Manual 7.2.1.1 Custom Output Configuration (Altitude) Low Speed Fans (Q2): This output is used to turn on the chamber air circulator(s) in low speed mode. When the altitude exceeds the “Alt Hi Speed Fan Enable SP” in the Configurator, this output turns off so the high speed fan output (Q44) can turn on and control the air circulators.

  • Page 68: Custom Output Configuration (Dts, Vts, Tsb)

    EZT-570S Technical Manual 7.2.1.2 Custom Output Configuration (DTS, VTS, TSB) Hot (left) Chamber (Q40): This output is used to turn on the left chamber of a DTS or the hot chamber of a VTS using chamber event 1. It is also used to enable both baths for a TSB.

  • Page 69: Custom Output Configuration (Tandem/Redundant Regrigeration)

    EZT-570S Technical Manual 7.2.1.3 Custom Output Configuration (Tandem/Redundant Refrigeration) System ‘B’ Heat/Cool Enable (Q40): This output is used to disable the cooling output from the 9300 controller when equipped with hot gas defrost. When defrost is on, this output will be off to prevent any cooling from taking place in order to defrost the cooling coil.
  • Page 70 EZT-570S Technical Manual System 2B Compressor (Q47): This output is used to turn system 2B compressor on and off based on the demand for cooling. It turns on after the stager start delay time set in the configurator. The timer begins once system 1B output turns on.

  • Page 71: Custom Output Configuration (Halt & Hass)

    EZT-570S Technical Manual 7.2.1.4 Custom Output Configuration (HALT & HASS) Conditioning Enable (Q2): This output is used to activate the chamber’s heating and cooling systems. This output is turned on when the chamber event is on and input I30 (VFD running) is on.

  • Page 72: Custom Output Configuration (Reach-In Stability)

    EZT-570S Technical Manual 7.2.1.5 Custom Output Configuration (Reach-In Stability) Door Frame Heater (Q0): This output is used to control the door frame heaters. It operates on a 6 second duty cycle. As the chamber’s internal temperature increases, the output will begin pulsing in order to reduce the heat output of the door frame heaters to prevent them from exceeding a safe “touch”...

  • Page 73: Custom Output Configuration (Vibration Table)

    EZT-570S Technical Manual 7.2.1.6 Custom Output Configuration (Vibration Table) Vibration Control (Q1): This output is used to modulate the vibration air control valve. It connects the loop controller output to the input of the control valve on startup. This prevents the vibration table from overshooting the control set point.

  • Page 74: Control Module Status Indicators

    EZT-570S Technical Manual 7.3 Control Module Status Indicators All of the digital input and output points on the PLC have indicator lights that tell whether the input or output is on or off. The lights are numbered for quick identification. By using the status lights, it can help diagnose a wiring or component problem in the system.

  • Page 75: Adjusting Ezt Configuration Options

    User: FACTORY Password: CONTROL Once you are logged in as “Factory”, you have the ability to exit the EZT-570S application. To exit the application, select “Offline” from the device settings menu. Select “Exit” from the offline system menu. Press the “Exit application. (Configuration mode startup)” button to quit the EZT-570S application.

  • Page 76: Number Of Loops/Monitors

    EZT-570S Technical Manual 8.2 Number of Loops/Monitors The number of loops/monitors screen is accessed from the “Loops” menu. It is used to configure the EZT for the number of control loops that are present (9300/C21 controllers), how many monitor inputs are used and how many analog inputs and outputs are installed on the EZT.

  • Page 77: Loops/Monitor Tagnames

    This description is used throughout the loop and trend screens as well as input selection screen for data logging in the main EZT-570S runtime application. Alm1 Message: Sets the alarm message that will be used for input alarms. This will be the name displayed on the alarm monitor screen when the user configurable alarm is active.
  • Page 78 EZT-570S Technical Manual Max Cool%: Sets the loop percentage of output at which the maximum cool output is enabled. Cool Dly: Sets the delay in seconds for which the loop percentage of output must exceed the max cool% before the max heat output will turn on.

  • Page 79: Chamber Options

    8.4 Chamber Options The “Chamber Options” screen is accessed from the “Chamber” menu. This screen is used to define what type of chamber the EZT-570S is being used on and enables special logic for certain types of chambers. Figure 8-4 Chamber Options All Options Off: Used for all standard temperature/humidity/altitude chambers.
  • Page 80 EZT-570S Technical Manual Vibration Table: Enables the logic for vibration table operation. Loop 1 is assigned as the vibration control loop. No other loops or options can be used when this option is selected. This utilizes the control module IO only.
  • Page 81 EZT-570S Technical Manual Door Alarm On/Off: Sets whether or not the opening and closing of the chamber door (when equipped with a door switch on input (I42), sounds the audible alarm and displays an alarm message on the alarm monitor screen. This is typically used when the door switch control is also enabled in order to alert the user that the door is open (which is why the chamber isn’t running).

  • Page 82: Refrigeration Options

    EZT-570S Technical Manual 8.5 Refrigeration Options The “Refrigeration Options” screen is accessed from the “Chamber” menu. This screen is used to define what type of refrigeration system the chamber has and how the EZT570S is to control it. Figure 8-5 Refrigeration Options The Advanced button provides access to additional refrigeration system settings used with Rate Master, Tandem, Redundant, and Tundra II systems.
  • Page 83 EZT-570S Technical Manual Do not change the refrigeration type to any selection other than what is installed on the chamber and called out on the EZT Configuration form supplied with the chamber or the refrigeration system may not operate properly and damage may occur.

  • Page 84: Refrigeration Advanced Options

    EZT-570S Technical Manual 8.5.1 Refrigeration Advanced Options The “Refrigeration Advanced Options” screen is accessed from the “Advanced” button on the Refrigeration Options screen. This screen is used to enter refrigeration system specific set points and operating mode selections for the Rate master, Tandem, Redundant and Tundra II type refrigeration systems.
  • Page 85 EZT-570S Technical Manual redundant operation is specified, the EZT570S will display the readings from the operating plenum. If tandem operation is specified, the EZT570S will display the average reading from both plenum control loops. Refrig Cycle Time The refrigeration cycle time sets the interval period used for redundant refrigeration in which the EZT570S will alternate between systems to equalize run time.

  • Page 86: Humidity Options

    EZT-570S Technical Manual 8.6 Humidity Options The “Humidity Options” screen is accessed from the “Chamber” menu. This screen is used to define what type of humidity system the chamber has and how the EZT570S is to control it. Figure 8-7 Humidity Options You must press the “Set”...
  • Page 87 EZT-570S Technical Manual Temp Comp On/Off: Enables or disables the humidity sensor temperature compensation algorithm in the EZT depending on whether or not a compensated sensor is used. The compensation is for a Vaisala HMM30C sensor only. Do not use it for other brands of sensors. This should be disabled when using compensated humidity sensors.

  • Page 88: Purge/Lo Rh Options

    EZT-570S Technical Manual 8.7 Purge/Lo RH Options The “Purge/Lo RH Options” screen is accessed from the “Chamber” menu. This screen is used to define what type of purge system is installed on the chamber and what dewpoint limits the humidity system is allowed to control to, if equipped.

  • Page 89: Auxiliary Cooling Options

    EZT-570S Technical Manual 8.8 Auxiliary Cooling Options The “Aux Cooling Options” screen is accessed from the “Chamber” menu. This screen is used to define what type of boost cooling the chamber has, if equipped. Figure 8-9 Aux Cooling Options You must press the “Set” button to save changes to the auxiliary cooling type selection. Be sure to press the “Set”...

  • Page 90: Configuration Options

    EZT-570S Technical Manual 8.9 Configuration Options The “Configuration Options” screen is accessed from the “Chamber” menu. This screen is used to set general values relating to altitude system operation and other options. Figure 8-10 Altitude Options Set the value of each item by touching the respective number field. Enter the correct value using the keypad and press done.

  • Page 91: Csz Events

    EZT-570S Technical Manual 8.10 CSZ Events The “CSZ Events” screen is accessed from the “Event/Alarm Tags” menu. This screen is used to set the names for the events of chamber options present. Figure 8-11 CSZ Event Names To change or edit a tag name, touch the position for the event and change the name using the pop-up keypad.

  • Page 92: Critical Chamber Alarms

    EZT-570S Technical Manual 8.11 Critical Chamber Alarms The “Critical Chamber Alarms” screen is accessed from the “Event/Alarm Tags” menu. This screen is used to set the names for the different system alarms in the chamber. Figure 8-12 Critical Chamber Alarm Names To change or edit a tag name, touch the position for the alarm and change the name using the pop- up keypad.

  • Page 93: Critical Refrigeration Alarms

    EZT-570S Technical Manual 8.12 Critical Refrigeration Alarms Access the “Critical Refrigeration Alarms” screen from the “Event/Alarm Tags” menu. This screen is used to set the names for the different refrigeration system alarms. Figure 8-13 Critical Refrigeration Alarm Names To change or edit a tag name, touch the position for the alarm and change the name using the pop- up keypad.

  • Page 94: Non-Critical Alarms

    EZT-570S Technical Manual 8.13 Non-Critical Alarms Access the “Non-Critical Alarms” screen from the “Event/Alarm Tags” menu. This screen is used to set the names for the different system status alarms such as service monitors. Figure 8-14 Non-Critical Alarm Names To change or edit a tag name, touch the position for the alarm and change the name using the pop- up keypad.

  • Page 95: Maintenance Alarms

    EZT-570S Technical Manual 8.14 Maintenance Alarms Access the “Maintenance Alarms” screen from the “Event/Alarm Tags” menu. This screen is used to set the names for the different service monitors of each system component. Figure 8-15 Maintenance Alarm Names To change or edit a tag name, touch the position for the alarm and change the name using the pop- up keypad.

  • Page 96: Special Settings Tagnames

    EZT-570S Technical Manual 8.15 Special Settings Tagnames Access the “Special Settings” screen from the “Event/Alarm Tags” menu. This screen is used to set the names for the different “special settings” values in the EZT application. Figure 8-16 Special Settings Names To change or edit a tag name, touch the position for the alarm and change the name using the pop- up keypad.

  • Page 97: Completing Ezt-570S Configuration

    EZT-570S Technical Manual 8.16 Completing EZT-570S Configuration Any changes made in the configurator program must be backed up prior to cycling power to the EZT. First, exit the configurator by selecting “Exit” from the “File” menu. DO NOT cycle power to the controller yet.

  • Page 99: Appendix

    EZT-570S Technical Manual Appendix...
  • Page 100 Figure 8-8 Purge/Lo RH Options ......................88 Figure 8-9 Aux Cooling Options ......................89 Figure 8-10 Altitude Options ........................ 90 Figure 8-11 CSZ Event Names ......................91 Figure 8-12 Critical Chamber Alarm Names ..................92 Figure 8-13 Critical Refrigeration Alarm Names .................. 93 Figure 8-14 Non-Critical Alarm Names ....................
  • Page 101 EZT-570S Technical Manual List of Tables Table 5-1 Common Serial Communication Problems and Corrective Actions ........33 Table 5-2 Common EZ-View Start-up Problems and Corrective Actions ..........34 Table 5-3 Common GPIB Communication Problems and Corrective Actions ........35 Table 5-4 Common Ethernet Communication Problems and Corrective Actions ....... 36 Table 7-1 Chamber Events ........................

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