Quick Start Programming Part 2:
(You must read and understand Part 1 before You read Part 2)
Layout your program on paper first, to be sure you know what you are trying to accomplish. Keep your paper layout handy so you can quickly recognize which step you need to go into to modify some parameter such as speed, acceleration, spin time or whatever.
Decide the Recipe Number you wish to use to store the program and select it (in the READY state only) by pressing the function key labeled RECIPE, and then the desired number on the 10-key pad (0-9). If this recipe already has a program, you may modify the existing steps and add new steps as desired to get the program you want. If you want to reduce the number of steps or prefer to start with a clean slate, then you must erase the entire recipe by pressing the function keys labeled RECIPE then CLEAR and then the Recipe # (in the READY state only). The recipe # entered will then show to be a recipe with zero (0) steps. It can now be reprogrammed.
Select Step 1 by pressing the function key labeled STEP, and then pressing 1 on the 10-key pad. Then note that the highest numbered step, 0, has changed to 1 on the LCD.
Press the function key labeled SPEED/RAMP. Enter the desired speed and verify it as displayed in the LCD*. (Must press the ON or ENTER key to accept the number keyed in for the speed or ramp). Again press the SPEED/RAMP key. Enter the desired acceleration/deceleration (ramp) for this step, and verify it as displayed in the LCD*. Press ON or ENTER to accept the entry. The SPEED/RAMP key is a toggle.
*NOTE: When entering numbers, the OFF or CLEAR key will act as a backspace key to allow correcting an entry prior to pressing the ON or ENTER key.
You may press the function key labeled FUNCTIONS, and select a number of the function (3-16), to see what "outputs" may be controlled during this step. These functions are very dependent on what optional accessories may be included with this specific system. Refer to other detailed information in the manual to understand the functions that may be useable in your specific equipment configuration. Set the step terminator(s): "Something must happen to cause a step to end, that is terminate, and the sequence move on to the next step. Most commonly the step terminator will be time, as set on the step timer. Sometimes it is necessary or just helpful, to permit a press of the START switch to terminate a step in progress. Sometimes a step may be terminated by something external to the controller, communicating on an 'input' line. If something besides time is intended to be the step terminator, then be sure to set the step timer significantly longer than it will take for the intended terminator event to occur – perhaps even best to just put the timer at its maximum 999.9 seconds. As a "watchdog" timer, the timer will always terminate a step if it times out.
If a process calls for an event to take more than 999.9 seconds, then it will be necessary to series two or more sequential steps with the same process conditions to obtain the longer time desired. When all of the parameters of step 1 are as desired, select the next higher step for programming.
SELECT STEP 2 by PRESSING, STEP, THEN 2: Proceed with setting the desired speed, ramp, functions and step terminator as in programming step 1. Proceed until all desired steps are programmed. When all steps have been programmed, terminate the recipe by pressing the function key labeled STEP, and then the number zero (0) on the 10-key pad. This will return you to the READY state.
A recipe may be reviewed or modified by pressing STEP and the step number to be reviewed or modified (when in the READY state!). This will put you in the REVIEW state. Once anything is changed in the recipe, the 'REVIEWING' mode automatically changes to 'PROGRAMMING' mode. Reviewing or programming is terminated by pressing the STEP and 0 buttons, sequentially. Pressing STEP and 0 buttons sequentially will return the system to the READY state from either the REVIEWING or PROGRAMMING mode.
One item to note: When the last step of a recipe terminates, the spinner will decelerate to zero speed at its maximum deceleration rate. This may not be desirable when using Inhibited Drying Spinning techniques. An additional step of programming can be used at the end of the cycle, to bring the spinner to zero speed at a more satisfactory deceleration rate. Just add one more step to the recipe and make the speed = zero, the timer = zero, and set the ramp to a satisfactory rate. The "stable speed" feature prevents the step timer from starting until the speed set in the step has been reached at the set ramp rate. Therefore the spinner will decelerate at the desired rate until it reaches zero, then the step timer will instantaneously terminate the step and the objective has been achieved!
The PWM32 Spinners are Available in Four Standard Motor/Bowl Configurations
For larger than 12-inch substrates, or for heavy substrates at higher than 2,500 rpm, HRI recommends the next larger bowl, the LS22 or IT22 (a different family of 22-inch I.D. Spinners).