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CSZ EZT-570L Technical Manual

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EZT-570L
Technical Manual
EZT570L Technical Manual RevB

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Summary of Contents for CSZ EZT-570L

  • Page 1 EZT-570L Technical Manual EZT570L Technical Manual RevB...

  • Page 2: Table Of Contents

    Technical Assistance ......................... 5 INSTALLATION ....................6 Environmental Considerations ....................6 Mounting Dimensions ........................ 6 2.2.1 EZT-570L ¼ DIN Hardware with 4.3” Touch Screen ............7 2.2.1.1 Process Loop/Limit Boards ..................8 2.2.2 EZT-570L 4.3” and 7” HMI Hardware ................. 9 2.2.2.1...
  • Page 3 EZT-570L Technical Manual 4.2.15 Output 2 Function ......................40 4.2.16 Output 2 Failure Transfer....................41 4.2.17 Output 2 Cycle Time ..................... 42 4.2.18 Output 2 Low/High Limit Values ................... 42 4.2.19 Output 3 Function ......................42 4.2.20 Output 3 Failure Transfer....................43 4.2.21...
  • Page 4 Dry Air Purge System Failures and Corrective Actions ..........104 REMOTE PC COMMUNICATION PROBLEMS ..........105 Serial Communications Troubleshooting ................105 6.1.1 CSZ EZ-View Software ....................106 GPIB Communications Troubleshooting ................107 Ethernet Communications Troubleshooting ................108 USER INTERFACE (HMI) TROUBLESHOOTING ........... 109 7.1.1...

  • Page 5: Overview

    EZT-570L Technical Manual 1. Overview This technical manual has been written to aid in the installation, wiring and troubleshooting of the EZT-570L and associated 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 6: Installation

    -10°C (14°F) and 60°C (140°F). 2.2 Mounting Dimensions The EZT-570L controller comes in two different hardware platforms. One consists of a ¼ DIN integrated touch screen and loop control configuration, and the other consists of an individual touch screen HMI (human machine interface) and individual loop control boards.

  • Page 7: Ezt-570L ¼ Din Hardware With 4.3" Touch Screen

    EZT-570L ¼ DIN Hardware with 4.3” Touch Screen The EZT-570L ¼ DIN base unit is supplied with four mounting clips. All four clips must be installed and properly tightened to insure the IP66 protective rating. Failure to install all mounting clips may also affect touch screen operation.

  • Page 8: Process Loop/Limit Boards

    One PCM control board is required for each process control loop. Each PCM must be installed in sequential order beginning with slot 1 up through slot 3. Only one HLM limit board can be installed in the EZT-570L base unit. The HLM must be installed after all of the PCM cards in the next open slot.

  • Page 9: Ezt-570L 4.3" And 7" Hmi Hardware

    B42 Process Loop Control Boards One PID loop control is required for each process control loop in the system. The EZT-570L utilizes the Future Design Controls B42 board level control. Please refer to the FDC B42 User’s Manual for dimensions,...

  • Page 10: Touch Screen Interface

    USB port Power supply NOTE: The EZT-570L will not operate properly without the SD card installed into the SD card slot on the back of the unit. The SD card has all software required, loaded onto the card for ‘Auto-Boot’...

  • Page 11: 7" Touch Screen Interface

    USB port Power supply NOTE: The EZT-570L will not operate properly without the SD card installed into the SD card slot on the back of the unit. The SD card has all software required, loaded onto the card for ‘Auto-Boot’...

  • Page 12: Expansion Io Module

    The expansion I/O module (FDC630TA-DC) provides an additional 16 digital inputs and 14 digital outputs to the EZT-570L control system. The inputs and outputs can be utilized as alarms, events, or for any number of uses within math/logic functions. The expansion IO module operates on 24VDC power and within an operating temperature range of -30 to 75°C (-22 to 167°F).

  • Page 13: Smart Io Monitor Module

    The Smart series SIO-8AIU(-H) remote I/O module provides the option of adding eight monitor input points to the EZT-570L. Each input is individually configurable for an array of different thermocouple, voltage and current types. The stand-alone module provides a wide input power range of 10-60VDC and an operating...

  • Page 14: Wiring

    The EZT-570L control system touch screen operates on a nominal 24VDC supply voltage with an allowable range of 11 to 36VDC. The B42 loop controls can either be DC (11-26VDC) or AC (90-250VAC) powered.

  • Page 15: Process Control Module (Pcm)

    Process Control Module (PCM) The EZT-570L can support a maximum of three PCM boards installed. The PCM boards must be installed beginning with slot 1 up to slot 3 for the maximum. DO NOT remove or install PCM boards while the EZT- 570L is under power or damage to the PCM or base unit may result.

  • Page 16: Event Input

    EZT-570L Technical Manual Thermocouple Input: Extension wire must be of the same alloy as the thermocouple to limit errors in reading. RTD Input: A 2-wire RTD can be used by placing a jumper between terminals 15 and 16 on the PCM. However, for every 1 ohm of lead wire resistance, an error of up to 1.1°C (2°F) can be caused in reading.

  • Page 17: Control Outputs

    EZT-570L Technical Manual 3.1.1.3 Control Outputs Each PCM can provide up to four outputs. The output type (if present) is based upon the PCM ordering code. Verify that the required output is supplied on the PCM prior to connecting it to the load.
  • Page 18 EZT-570L Technical Manual Isolated Linear Outputs Output 1 and 2 are capable of providing linear outputs for control operation, i.e., heat/cool. Output 3 does not provide a linear output option. Output 4 is capable of providing a linear output for process value (PV) or set point (SP) retransmission.

  • Page 19: High Limit Module (Hlm) Connections

    High Limit Module (HLM) Connections The EZT-570L can support a maximum of one HLM board. The HLM must be installed after all PCM boards in the next open slot. If only one PCM is installed, the HLM would be installed in slot 2. If a PCM is installed in both slots 1 and 2, the HLM would be installed in slot 3.

  • Page 20: Event Input

    EZT-570L Technical Manual 3.1.2.2 Event Input The Event input accepts a digital type signal via a dry contact (switch/relay) closure. The input can also be activated via an open collector/TTL source. 3.1.2.3 Limit Outputs The HLM provides one limit output as well as an optional programmable output. The output type is based upon the HLM ordering code.
  • Page 21 EZT-570L Technical Manual Pulsed Voltage Outputs Source Voltage: 5V at 30mA, current limiting resistance 66 ohms 14Vat 40mA, current limited at 70mA (recommended for driving 3 phase SSR) Transmitter Power Supply Output 1 is for high/low limit operation only. Output 2 provides options for a 5VDC/80mA, 12VDC/40mA or...

  • Page 22: Communication Connections

    The unit is equipped with a DB9 male serial port that provides both RS232 and RS45 communication options. Only one hardware interface can be used at a time. In order to connect the EZT-570L to a PC running software such as CSZ’s EzView software a cable must be fashioned according to the following diagrams.
  • Page 23 EZT-570L Technical Manual RS485 If more than one EZT-570L controller is to be placed on the communication link with a PC or the distance between the PC and the unit exceed the recommended maximum of 30 feet for RS232, an RS485 converter is required at the PC in order to utilize the RS485 connection.

  • Page 24: Connecting To The Ezt-570L Hmi

    EZT-570L Technical Manual 3.2 Connecting to the EZT-570L HMI Power wiring lengths should be kept to a minimum, and it is preferable to have the power wiring run using a minimum of 18/2 twisted shielded cable. This keeps the “hot” and “common” wires paired to minimize the effects of external noise.

  • Page 25: Process Loop Controller Communication Connections

    CSZ recommends the use of shielded wire for all installations in order to maintain optimum performance and minimize the possibility of communications errors. When using shielded twisted-pair, be sure to ground only one end of the cable, preferably at the loop controller.

  • Page 26: Connecting To The Process Loop/Limit Controls

    The EZT-570L touch screen provides an RS232C user communications port for connecting the unit to a PC running software such as CSZ’s EzView software. In order to connect the unit to a PC, a cable must be fashioned according to the diagram below.
  • Page 27 EZT-570L Technical Manual NOTE: The connection requires a single twisted-pair cable that is daisy-chained from one unit to the next. When using shielded twisted-pair cable, be sure to ground only one end of the cable, preferably at the RS232 to RS485 network adapter. Allowing any other portion of the cable shield to come in contact with ground, or grounding both ends, will cause ground loop currents to flow in that section of the cable which can cause communication errors.

  • Page 28: Connecting To The Expansion Io Module

    The communication connection to the EZT-570L is made via the 5-pin connector on the right side of the expansion module. Connectors are provided with pig-tail leads (TX1=gray, TX2=orange). Lead length is ~18”...

  • Page 29: Connecting To The Smart Io Monitor Module

    The communication connection to the EZT-570L requires a single twisted-pair cable. When using shielded, twisted-pair cable, be sure to ground only one end of the cable, preferably at the module. Allowing any other portion of the cable shield to come in contact with ground, or grounding both ends, will cause ground loop currents to flow in the cable which can cause communication errors.

  • Page 30: Sensor Wiring

    EZT-570L Technical Manual 3.4.1 Sensor Wiring Each input of the Smart series monitor module can be configured for a variety of thermocouples, voltage and current ranges. Thermocouple types include J, K, T, E, R, S, B and N. Voltage ranges include +100mV, +500mV, +1V, +5V, +10V, 0~100mV, 0~500mV, 0~1V, 0~5V and 0~10V.

  • Page 31: Adjusting Ezt Configuration Options

    The Configurator program does not run at the same time as the main runtime software. To access the EZT configurator, you must quit the EZT-570L application and start the configurator program. To do this, you must have the proper security access. All chambers leave the factory with a default user name and password.
  • Page 32 The Options menu provides access to Cascade (Product) Control and Expansion IO configuration settings. The Startup menu provides access to enable and disable EZT-570L runtime screens/menus and set the desired startup view selection. The Tagnames menu provides access to the text editing functions of the Configurator which allow the event and alarm names to be changed to match their use in the system.

  • Page 33: Control Setup

    The Control Type drop down menu is used to define the mode of operation for the EZT-570L. The number of process loop boards and limit control (if required) are set automatically and dependent upon the control type selected.

  • Page 34: Loop Configuration

    The Monitor Points field is used to enter the number of monitor points that will be provided on the system. The EZT-570L is capable of providing up to eight monitor points via the external Smart IO module. When at least one monitor point is entered, the Monitor Configuration menu item is enabled and the input(s) can be defined.

  • Page 35: Tagname

    4.2.1 Tagname The Tagname entry is used to assign a specific name for each control loop, i.e., Temperature, Humidity, etc., up to 11 characters in length. This name will be used throughout the EZT-570L runtime application. 4.2.2 Input Type The Input Type entry is used to select the type of sensor that will be connected to the loop control. The input type can be a temperature input (thermocouple or RTD) or a linear input type (VDC or mA).

  • Page 36: Decimal Point

    EZT-570L Technical Manual The input unit selections for temperature are mutually exclusive, i.e., selecting one will turn off the other. Once the desired temperature units have been selected, press the “Done” button to set the input units for the loop control board and return to the main Loop Configuration screen.

  • Page 37: Event Input Function

    EZT-570L Technical Manual 4.2.7 Event Input Function The Event Input Function is used to select the desired mode of operation for the digital input of the loop control board. The event input selections are mutually exclusive, i.e., selecting one will turn off the others.

  • Page 38: Event Input Alarm Message/Annotation

    The low and high limit set points are used to set the minimum and maximum allowed set points that can be entered for the loop control. These are set by CSZ to limit the control range to within the safe operating range of the chamber.

  • Page 39: Output 1 Failure Transfer

    EZT-570L Technical Manual The Heating on-off control function will turn on the output when the process value is below set point. When the process value rises above the set point plus the on-off control hysteresis, the output will turn off.

  • Page 40: Output 1 On-Off Control Hysteresis

    EZT-570L Technical Manual 4.2.12 Output 1 ON-OFF Control Hysteresis The output 1 on-off control hysteresis can be set when the output 1 function is set for heating or cooling on- off control. It is used to eliminate rapid cycling of the control output by applying a safe-sided dead band to the control output.

  • Page 41: Output 2 Failure Transfer

    The Manual event output only function is similar to the Event output function above as it allows the output to be turned on manually through the EZT-570L runtime application to act as a “soft” switch to turn system components on and off. However, the output cannot be controlled via an automatic program which allows the output to be controlled separately regardless of program operation.

  • Page 42: Output 2 Cycle Time

    The Manual event output only function is similar to the Event output function above as it allows the output to be turned on manually through the EZT-570L runtime application to act as a “soft” switch to turn system components on and off. However, the output cannot be controlled via an automatic program which allows...

  • Page 43: Output 3 Failure Transfer

    The Manual event output only function is similar to the Event output function above as it allows the output to be turned on manually through the EZT-570L runtime application to act as a “soft” switch to turn system components on and off. However, the output cannot be controlled via an automatic program which allows...

  • Page 44: Output 4 Failure Transfer

    NOTE: These alarms are referred to as “hard alarms” as they provide direct outputs. These alarms are not accessible over the communications interface of the EZT-570L, i.e., they alarm status and set points cannot be viewed or altered. To provide alarms for the loop input, utilize the soft alarms (see section 4.5 Soft Alarm Configuration.

  • Page 45: Alarm (1-3) Mode

    EZT-570L Technical Manual A Process high alarm is independent of set point. When the process value is higher than the alarm set point (PV > ASP), a process high alarm occurs. When the process value is lower than the alarm set point minus the alarm hysteresis (PV <...

  • Page 46: Alarm (1-3) Indication

    EZT-570L Technical Manual Normal alarm action has the alarm output off in the non-alarm condition and on in the alarm condition. The output state is inverted for a reverse alarm output. Latching alarm action will keep the alarm output on even if the alarm condition has cleared until the alarm is reset by the user.

  • Page 47: Alarm (1-3) Setpoint

    “show” the alarm status and settings, the set point will also be available in the EZT-570L runtime application. If the alarm indication is set for “hide” alarm status and settings, the alarm set point will not be available in the EZT-570L runtime application and can only be changed in the Configurator.

  • Page 48: Limit Configuration

    The Monitor Only selection turn the loop into a monitor point in which the loop set point and percentage of output in the EZT-570L runtime are hidden so only the process value is shown. This provides an easy method for adding another input to the system for monitoring the value of a process, while also providing additional outputs that could be used as events, sensor power supply, etc.

  • Page 49: Tagname

    4.3.1 Tagname The Tagname entry is used to assign a specific name for the limit, up to 11 characters in length. This name will be used throughout the EZT-570L runtime application. 4.3.2 Input Type The Input Type entry is used to select the type of sensor that will be connected to the loop control. The input type can be a temperature input (thermocouple or RTD) or a linear input type (VDC or mA).

  • Page 50: Decimal Point

    EZT-570L Technical Manual The input unit selections for temperature are mutually exclusive, i.e., selecting one will turn off the other. Once the desired temperature units have been selected, press the “Done” button to set the input units for the limit control and return to the main Limit Configuration screen.

  • Page 51: Output 1 Function

    EZT-570L Technical Manual 4.3.7 Output 1 Function The Output 1 Function is used to set the mode of operation of the limit control output. The output can be set for high limit control, low limit control or high/low limit control. The output selections are mutually exclusive, i.e., selecting one will turn off the others.

  • Page 52: Lower/Upper Limit Of High Setpoint

    These entry fields are active when the output 1 function of the limit control is set to high limit control or high/low limit control. These values are set by CSZ to ensure that the user can not adjust the high limit set point beyond the maximum safe operating limits of the chamber.

  • Page 53: Alarm Function

    EZT-570L Technical Manual The Alarm output function activates the alarm configuration settings for assigning the type of alarm logic to apply to output 2. When the alarm condition is active, the output will turn on. The Limit annunciator function uses output 2 as a means for activating an external audible alarm. When the limit output deactivates due to the process value exceeding the high or low limit set point, output 2 will also activate.

  • Page 54: Alarm Indication

    4.3.15 Alarm Indication The Alarm Indication entry is used to select whether the alarm will be shown in the EZt-570L runtime application or be hidden from the user. This allows the alarm to perform a specific control function while preventing the user from adjusting the set point or seeing the activation state of the alarm.

  • Page 55: Alarm Setpoint

    The alarm set point can be set when output 2 is configured as an alarm output. If the alarm indication is set to “show” the alarm status and settings, the set point will also be available in the EZT-570L runtime application.

  • Page 56: Display Format

    L41. NOTE: Any setting changes made from the EZT-570L display via the Configurator or runtime application will unlock the front panel of the L41. The L41 will automatically lock the front panel after several minutes of inactivity regardless of the event input state.

  • Page 57: Optional Monitor Point Configuration

    Tagname The Tagname entry allows is used to assign a specific name for each monitor point, up to 11 characters in length. This name will be used throughout the EZT-570L runtime application. The default tag names are Monitor1 to Monitor8.

  • Page 58: Input Units

    EZT-570L Technical Manual NOTE: Each input is equipped with a slide switch for selecting voltage or current input type. The switch must be set properly according to the input type selection made. See section 3.4.1 Sensor Wiring for details on sensor wiring and switch settings according to selected sensor type.

  • Page 59: Input Low/High Scale

    EZT-570L Technical Manual 4.4.5 Input Low/High Scale The Input Low Scale and Input High Scale entries are used to set the input range for linear input types (VDC or mA). The entries are not available for thermocouple inputs since they utilize a fixed range based on the sensor type.
  • Page 60 EZT-570L Technical Manual When the alarm source is a logic equation, the alarm will activate when the result of the logic equation is true. The alarm will deactivate when the result of the logic equation is false. Process (Active) Low The alarm is independent of set point.

  • Page 61: Math/Logic Configuration

    The alarm Delay can be entered when the alarm function is set for a process or deviation type of alarm. The alarm delay will also be available in the EZT-570L runtime application. The alarm delay is used to delay the activation of the alarm for a specified period of time. The delay is entered in seconds and can be set with a minimum of zero to a maximum 5999 seconds (99 minutes and 59 seconds).
  • Page 62 The Tagname entry allows the user or OEM to assign a specific name for each equation, up to 11 characters in length. This name will be used throughout the EZT-570L runtime application to identify the calculated value on the Overview screen and in the trend and data logging point selection lists. The default tag names are Math1 to Math20.
  • Page 63 EZT-570L Technical Manual S2_EventIn Loop 2 (slot 2) event input. If selected, the equation will be evaluated when the event input is activated. This selection is available when the event input function of the B42 in slot 2 is configured for any of the functions except for failure transfer.

  • Page 64: Entering A Math/Logic Equation

    EZT-570L Technical Manual The Output selection is provided for Logic equations and is used to select the output for the equation. The available output selections depend upon the number of loops available and the number of outputs configured as events as well as expansion IO module configuration. The available selections can include S1_EvOut2, S1_EvOut3, S1_EvOut4, S2_EvOut2, S2_EvOut3, S2_EvOut4, S3_EvOut2, S3_EvOut3, S3_EvOut4 and ExpOut32 to 45 which correspond to the trigger selections above.
  • Page 65 EZT-570L Technical Manual Equations follow the standard order of operations for mathematics. Multiplication and division operators are evaluated first, followed by addition and subtraction. It is recommended that you determine what your equation should be prior to entry, so that parenthesis can be added in the proper locations in order to ensure that operations are carried out in the proper order.

  • Page 66: Math/Logic Equation Examples

    The EZT-570L supports standard math operators including addition (+), subtraction (-), multiplication (*) and division (/). The power of the EZT-570L math/logic block, is that it allows free-form entry of any equation including any combination of variables the system provides. Due to this however, when entering equations, it is important to understand the standard order of operations or the result may not be what is expected.
  • Page 67 The same holds true for division and subtraction in which division is given a higher precedence than subtraction. Therefore, when an equation is evaluated by the EZT-570L, multiplication and division are executed first from left to right, and then addition and subtraction are performed from left to right. If parenthesis are included in the equation, the expression(s) within the parenthesis are evaluated first.

  • Page 68: Square Root (Sqrt) Implementation

    “Always” selection. When the trigger is on, sampling will occur, i.e., the equation will be continuously evaluated. When the trigger is off, the EZT-570L will stop evaluating the equation, but the previous value will be maintained. This provides a simple means for performing sample and hold.

  • Page 69: Basic Logic Operators

    The EZT-570L provides standard logic operators (AND, OR, NOT) as well comparison operators of less than (<), greater than (>) and equals (=). Couples with the free-form entry of the EZT-570L math/logic blocks, it permits the operators to be used in any combination with any available system variable to create the custom logic required for any application.
  • Page 70 EZT-570L Technical Manual If either input is true, the output is false. If both inputs are false, the output is true. Note: NOR is just what it implies, i.e., NOT OR. Inputs Output F = False (off) T = True (on) Latch When the trigger is active, the output follows the input.

  • Page 71: Advanced Boost Heat/Cool

    This type of operation can be programmed into the EZT-570L using a logic type equation to activate a digital output which would enable the boost heating or cooling stage. Take the following example: Loop 1 (temperature control) ...
  • Page 72 EZT-570L Technical Manual Math/Logic 1 will be used for boost heat, so first we select “Logic” for the equation Type. For reference, the Tagname will be set to “Boost Heat”. The Trigger will be left at the default of “Always” since the output should activate any time the heating percentage of output is above 80%.
  • Page 73 EZT-570L Technical Manual When the temperature percentage of output is less than -50, event output 4 of loop 1 will activate. When the percentage of output is above -50, the output will turn off. The two equations now provide the boost heat and cool functions required.

  • Page 74: Advanced Compressor Control Logic Example

    EZT-570L Technical Manual 4.6.2.6 Advanced Compressor Control Logic Example Compressor control applications typically involve single or dual stage refrigeration systems. Dual stage systems are utilized in ultra-low temperature situations such as environmental test chambers or even heat treat applications where temperatures below -100°F (-73°C) are required. Typically, control schemes for environmental chambers tend to be more complex.
  • Page 75 EZT-570L. Now that we have the start delay, we need the stop delay. We will advance to math/logic equation 2 and define it as a Timer type also.
  • Page 76 EZT-570L Technical Manual This equation is relatively simple (as shown below). First, we need to verify that the stage 1 output is activated (S1_EvOut4) which is loop 1 event output 4. Next, we only want stage 2 to activate if the humidity system is not on which is loop 2 event output 3 (NOT S2_EvOut3).

  • Page 77: Cascade (Product) Control Option

    Note that this is only an example on how the EZT-570L and the math/logic module can be utilized to perform more complex control scenarios such as compressor control. The free-form logic entry provides you with numerous options and possibilities to implement various logic tasks that your application may require.

  • Page 78: Expansion Io Module Option

    Product Control will not be available in the EZT-570L runtime application. When Enabled is selected, the product control logic will be activated. However, in order for the settings to be available in the EZT-570L runtime application, the “Loop cascade Settings” function must also be enabled.

  • Page 79: Ezt Logic Mode Settings

    EZT-570L Technical Manual 4.8.1 EZT Logic Mode Settings When the EZT Logic mode is enabled, all of the digital inputs and outputs are predefined for specific functions. Some of the IO points cannot be altered, while others provide certain configuration options such as refrigeration system type.
  • Page 80 EZT-570L Technical Manual The System 1 Oil Pressure/Protection Module (13) input is used to indicate that the system 1 compressor oil pressure is below the proper operating range (if equipped) or the compressor protection module (if equipped) detected an improper phase condition/loss or the compressor motor windings have overheated.

  • Page 81: Ezt Logic Mode Input (8-23) Alarm Message

    EZT-570L Technical Manual The Door Switch (21) input is used to indicate if the chamber door is open or closed (if equipped). The "DOOR OPEN" status will be displayed on the system status monitor screen. There are three options for the door alarm input operation.
  • Page 82 EZT-570L display is pressed. This output provides an Enable/Disable selection, so that it can be turned off. When disabled, the light icon will not be shown on the EZT-570L so it can be utilized on chambers that do not provide interior lighting.
  • Page 83 EZT-570L Technical Manual  When Single Stage is selected, output 38 will be designated as the “System 1 Compressor (single stage)” output. This is the standard single stage system selection. Output 39 will be designated as the “Max Cool” output. If the refrigeration system utilizes min/max cooling, output 39 is used to enable the maximum cooling solenoid.
  • Page 84 EZT-570L Technical Manual The Humidity System (40) output is used to turn the humidity system on and off when chamber event 2 (humidity) is turned on and off. There are two options for humidity system operation.  When Disabled is selected, there will be no humidity system operation and chamber event 2 will not be provided.
  • Page 85 EZT-570L Technical Manual The Dry Air Purge/Frozen Coil (41, 42) outputs are used to enable the dry air purge and frozen coil options. Selecting either output 41 or 42 from the list will provide the purge/low RH option selections. The options are mutually exclusive, so selecting one will deselect the others.
  • Page 86 The Control selection is used when the auxiliary cooling medium is utilized to drop chamber temperature below the capabilities of the refrigeration system. When selected, the EZT-570L will then disable the refrigeration system to prevent damage when the air temperature drops below the operating temperature of the refrigerant utilized.

  • Page 87: Basic Mode Settings

    When selected, the output mode can be set to Enabled or Disabled. When disabled, the output performs no function. When enabled, chamber event 9 (initiate defrost) is provided and the Defrost settings screen is shown in the EZT-570L runtime application to allow the user to configure defrost operation. 4.8.2 Basic Mode Settings When the basic mode is “Enabled”...

  • Page 88: Basic Input (8-23) Alarm Message/Annotation

    EZT-570L Technical Manual The Automatic program run/abort function will start the currently loaded program from step 1 if not already running, upon activation of the input (an off to on transition). Deactivating the input (an on to off transition) will stop the program if it is currently running.

  • Page 89: Basic Output (32-45) Functions

    The Manual event output only function is similar to the Event output function above as it allows the output to be turned on manually through the EZT-570L runtime application to act as a “soft” switch to turn system components on and off. However, the output cannot be controlled via an automatic program which allows the output to be controlled separately regardless of program operation.
  • Page 90 EZT-570L Technical Manual IMPORTANT: Disabling EZT-570L functions that are not required for the application results in a system that is clean and easy to use for the operator; however, be careful when disabling certain items. Without access to them, there may be no way to determine if the system is operating as required.
  • Page 91 EZT-570L Technical Manual Function Runtime Menu Location Description Security Settings Security view/set security rights, view audit trails, user log on Notifications view security and audit status NOTE: If security is enabled, but system security is then disabled through this item, the user will be unable to log on.
  • Page 92 EZT-570L Technical Manual Function Runtime Menu Location Description Digital Signatures Data\View\Signature access to view and add digital signature to data log file File Utilities Data\Utilities\USB access to copy/delete alarm, audit, program and data log files Note: Alarm, audit and data files may be transferred via FTP if unit is so configured.

  • Page 93: Startup View

    EZT-570L Technical Manual Function Runtime Menu Location Description Edit Event Names Device\Settings\Set \Event access to view/edit system event names NOTE: Event names assigned in the runtime and then this item disabled to prevent changes to event names. Temperature Units Device\Settings\Offline\Set\Units...

  • Page 94: Alarm Names

    EZT-570L Technical Manual 4.11 Alarm Names The Alarm Names screen is accessed from the Tagnames menu and provides the ability to edit the name (alarm message) of all configured alarms. In order to access the screen, there must be at least one loop control output configured as an alarm, one soft alarm programmed or the limit control installed.

  • Page 95: Custom Name\Address

    4.13 Custom Name\Address The Custom Name\Address screen is accessed from the Tagnames menu and is used by CSZ to configure the main splash screen when the EZT-570L runtime application starts. It allows the company name and contact information to be entered and shown each time the system is powered up.

  • Page 96: Smart Io Communication Utility

    EZT-570L to access it properly. If the communications address is not set properly in the loop control, the EZT-570L will not be able to communicate with it or may communicate with the wrong loop control and assign the incorrect set points and control parameters to it.
  • Page 97 Cycle power to the monitor module after the reset is performed and again press the “Detect Monitor Point Card” button on the EZT-570L. The EZT-570L should then be able to set the proper communication settings. Upon success, be sure to cycle power to the monitor module so that it will begin using the new communication settings.

  • Page 98: Troubleshooting Chamber Operation

    EZT-570L Technical Manual 5. Troubleshooting Chamber Operation 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 99: Conditioning System

    EZT-570L Technical Manual 5.1 Conditioning System When the main chamber event is turned on, temperature control is the primary function. The air circulator output will turn on and enable heating/cooling. The cool enable output, if equipped, turns on with the chamber event to enable the control circuits for heating and cooling.

  • Page 100: Conditioning System Failures And Corrective Actions

    EZT-570L Technical Manual This will terminate defrost and active the Prechill cycle. In pre-chill, the defrost solenoid will be turned off and the cooling enable output will be turned on. This will allow the refrigeration system to pre cool the coil prior to starting the air circulators.

  • Page 101: Humidity System

    EZT-570L Technical Manual SYMPTOM PROBABLE CAUSES CORRECTIVE ACTIONS Chamber not cooling. Chamber event not on. Turn on chamber event. (further diagnosis and/or repair requires Cooling coil fouled with ice build-up. Initiate defrost or warm up chamber to certified refrigeration service personnel) melt ice from coil.

  • Page 102: Humidity System Failures And Corrective Actions

    EZT-570L Technical Manual Should the user enter a set point outside of those limits, the EZT will coerce the loop control set point to the minimum or maximum value allowed. The system status monitor will then indicate that limiting is taking place and in which direction by illuminating the appropriate LED on the status monitor screen.

  • Page 103: Auxiliary Cooling System

    EZT-570L Technical Manual 5.3 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 104: Dry Air Purge System

    EZT-570L Technical Manual 5.4 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 will turn on when the chamber and purge events are turned on.

  • Page 105: Remote Pc Communication Problems

    Communication Reference Manual. 6.1 Serial Communications Troubleshooting The EZT-570L allows a user to remote monitor and control chamber operations over an optional RS232 or RS485 serial communications connection. Only one connection, RS232 or RS485 may be used at a time.

  • Page 106: Csz Ez-View Software

    6.1.1 CSZ EZ-View Software EZ-View is a SCADA and configuration package for CSZ EZT controllers. Connection to controllers is accomplished via an RS232 (single) or RS485 (one to many) connection. This allows for up to 31 EZT controlled chambers to be connected to a single PC using RS485.

  • Page 107: Gpib Communications Troubleshooting

    EZT-570L Technical Manual 6.2 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 108: Ethernet Communications Troubleshooting

    10/100 connection of the EZT will be required. In order to use any of the three, you must use the assigned IP of EZT-570L in order to access it. To obtain the correct IP address, go to the communications screen under the device settings menu or open the notifications list by touching the date/time field in the menu bar.

  • Page 109: User Interface (Hmi) Troubleshooting

    EZT-570L Technical Manual 7. User Interface (HMI) Troubleshooting The EZT-570L user interface is an embedded device. Once powered up, it will follow a typical boot up sequence (similar to any PC running a Microsoft Windows product) and automatically start the EZT-570L application.
  • Page 110 EZT-570L Technical Manual Hidden taskbar application icon From the desktop, double-tap the hidden icon at the top left of the screen to access the taskbar application. Press the “Show Taskbar” button in order to show the taskbar and then press the “Quit” button to exit the taskbar application.
  • Page 111 From the “My Device” folder, locate and open the “Storage Card” (SD card) folder. The SD card holds a copy of all EZT-570L application and data files. DO NOT alter or delete any files on the SD card. Locate the “570L Factory Setup” application and run the application.

  • Page 112: Touch Screen Calibration

    EZT-570L Technical Manual 7.1.2 Touch Screen Calibration If the touch screen is severely out of calibration it can appear as if the unit 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 113 EZT-570L Technical Manual Select “Display” from the System menu. 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. 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.

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