CSZ EZT-570S, Руководство пользователя

Страница: 51 / 155

EZT-570S User Manual
51
4.6 Frequently Asked Questions About Ramp/Soak Program Operation
1. How do I start or run a ramp/soak program?
From the Main loop view or Overview screen press the “Program Operation” button or on the
Program Status or Program Entry screen press the “Run” button icon. Press the “Run” button on the
Program Operation window, or press the “Select” button to select from a list of programs stored in the
EZT-570S memory. Select the desired program from the list, and then run the program.
2. How do I know which program is running?
When a program is running, the name is displayed on Program Status view screen as well as the
Main loop view and Overview screens. The EZT-570S will indicate that the program is running when
it is in operation. If a program is not running, the EZT-570S will display the name of the currently
loaded program, i.e., present in memory and ready to be run.
3. Why does the program not ramp to the set points in the first step?
The program operation of the EZT-570S was designed to operate the chamber based on the set
points and events defined in the program. Since the chamber can be at random set points when a
program is started, this could cause the chamber to not follow the selected program properly or the
same each time it is run. To insure that the program is executed in the same manner each time, the
chamber set points are immediately set to the first step’s set points for the length of the step. This
acts as an “initialization” step to get the chamber running and conditioning product as desired prior to
performing ramping sequences of the program. This eliminates the need for the operator to set the
chamber to the proper set points prior to starting a program.
For instances where only a single ramp is required, or a remote software package is being
used to send ramping sequences to the EZT-570S, the program operation was designed to
except a one step program. If a one step program is run, the chamber will ramp from its
current set points to the set points of the one step program. It will not immediately take the
set points of the step. Thus, by executing one step programs, ramping sequences can be
executed when required and not on predefined time intervals. This is especially useful and
simplifies programming when custom software applications are being used to control the
chamber.
4. How do I enter a jump step?
A “jump step” is a normal step; however, instead of continuing to the next step of the program when
the step is complete, the program “jumps” to a specified step. To enter a jump, set the step number
you want to the program to jump to, and the number of times that the jump is to take place, into the
step you want to jump from. When that step is complete, the jump settings will tell the program to
jump to the specified step until all jumps have taken place. The next time the jump step is executed
(after all jumps have taken place), the program will continue on to the next step.
5. Why is the program not coming out of Hold?
If an alarm condition is present which shuts the chamber down, the program is automatically placed
into hold. The alarm condition must be cleared in order for the program to resume operation.