Watlow Series 935B - Manual (Page 12)

12 Watlow Series 935B User’s Manual
The Series 935B Operations Menu is the first menu you encounter when you press the . and , keys simultane-
ously for three seconds. The Operations Menu provides a location to initiate the following actions or complete the
following tasks:
• Auto-tune [`Aut] : Start or stop the auto-tuning process. Auto-tuning selects a set of viable proportional, integral,
and derivative values for heat and/or cool output.
• Alarm Points, [`ALO] and [`AhI] : Select the values for the high alarm point and the low alarm point. Alarm points,
dependent on sensor type high and low ranges, reside in the Operations Menu for easy access.
• Timer Countdown Time [tMr] : Select a countdown time value between 00:00 and 99:59 hours:minutes or
minutes:seconds. Time interval choices [thM] and [tMS] reside in the Configuration Menu for Output 2.
• Idle Set Point [IDLE] : [trAc] or an adjustable value between [``rL] and [``rh] . Choose to have the Idle Set
Point track [trAc] , or equal, the Primary Set Point; or select an Idle Set Point value in °F or °C between the range
low [``rL] and range high [``rh] values. The Idle Set Point is active both before and after the timing sequence.
The normal or Primary Set Point controls during the timing sequence.
• Go to the PID Menu [`Pid] : Choose [`YES] to proceed to the PID Menu.
• Go to the Configuration Menu [CnFg] : Choose [`YES] to proceed to the Configuration Menu.
The table on the next page presents this information in graphic form.
NOTE: Not every prompt listed here or on p. 13 in the Operations Menu will appear in your unit. Prompts vary
with lockout function and output set-up. Whether or not prompts appear in the Operations Menu depends on
two features of the Series 935B:
• Lockout function; the Lockout Tag [`tAg] function masks prompts from view in the various menus. (If you cannot
see a prompt, you can make no change.) See Using Lockout Functions, p. 20, for more information.
• Output 1 and 2 Configuration; some outputs are mutually exclusive. For example, if Output 1 is Alarm, then Output 2
cannot be Timer. Therefore, the Operations menu will have no timer-related prompts. See the Valid Output Functions
Table, p. 5, or Setting Up Inputs and Outputs, p. 22.
Learn the Operations Menu