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Running your series 920, Where to go from here, Run key flow diagram – Watlow Series 920 Microprocessor-Based Ramping Control User Manual

Page 19: Figure 8, You’d like to

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WAITFOR Process Variable (WPV). When equal, the HOLD LED stops flashing.

Your program then continues to the last step, a STOP step, and HOLD

S

again.

To change a programmed step, return to the PROGRAM menu, and enter the FILE

and STEP number to change. Use the UP/DOWN keys to select another step type
and press ENTER. Under a step type, to clear all parameters of the current values,

return to that step type and press ENTER. All parameters will return to their defaults.

Running Your Series 920

To run the Series 920, you must be at one of the three main level operating parameter

menus, SYSTEM, PROGRAM, or SETUP. Press the RUN/HOLD key. The Series 920

asks you what file you’d like to run, and asks what step to begin with. After entering
the file and step number, the program begins and the RUN LED is lit. While in the

RUN mode, you can only view the current file and step.

To change your program, you must be in the HOLD mode. To stop your program

at

any time, press HOLD. When returning to your program, the Series 920 asks if

you’d

like to

RESUME? on the step you left off on. Trying to RESUME on a file that has

been changed, generates an “ER2 0040”; this is a “Change File Error.” Advance to

the START prompt and begin the program again.

When in the PROGRAM menu, SP is programmed to the steps ending set point.
When in the RUN mode it shows the current set point. In the RUN mode, SE shows

the

steps ending set point. Refer to Pages 51 - 52 for definitions of other prompts.

Figure 8 -

RUN Key Flow
Diagram.

At the SYSTEM prompt,

to continue to PROGRAM mode.

Press

to enter the PROGRAM parameter values, or

press

to continue to SETUP.

Graphics Key

= MODE Key
= ENTER Key

UP/DOWN

One of the three step types will be displayed

depending on the type of step

JUMPLOOP, STOP, and LINK step types are immediate, and will not be visible.

NOTE:

Shaded parameters

may not

appear on

your control. These

parameters are

dependent on how
your control is

configured. See
Chapter 6

for

more

information.

Sample Program, Chapter 3

WATLOW Series 920 User’s ManuaI

19