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WATLOW PROGRAMING GUIDE
COMMONLY USED PROFILE STEP OPTIONS
The Timed Interval step option is used for ramping up or
ramping down the oven’s temperature over a user-selected
time interval. Note: Use of this option must take into account
the oven’s maximum heating and cooling rates, which can vary
with environmental conditions of your shop, production space,
or laboratory.
The Soak option runs the oven at a constant temperature for a
duration programed using the option’s minute, hour, and
second parameter settings.
The End option ends a running profile when that step is
reached. If the End option is not chosen, a running profile will
advance to the next programed step stored in the controller’s
memory.
The User “USEr” parameter choice for End restores the oven to
the user’s manual control, and returns the oven to its pre-profile
heating state.
POWERING THE EXTERNAL OUTLET
This section does not apply to vacuum ovens.
Some forced air and convection ovens are provided with an external electrical outlet for powering
an accessory exhaust blower fan. Watlows for these ovens include an Event 1 parameter for each
step option. Switching this parameter from Off to On will trigger the power up of the oven’s external
power outlet, and any equipment attached to it, when the step is reached during a profile. Switching
to parameter to Off depowers the outlet, when the step is reached.
By default the Event 1 parameter is set to Off. It must be switched to On for each successive step
that you want it to run during the execution of the profile.
As of the current printing of this guide, the following ovens can use the Event 1 parameter to power
an external exhaust blower: SMO5HP-2, SMO10HP-2, SMO14HP-2, SMO34HP-2, SMO38HP-2,
and SMO5CR-2
The units previously designated as: HF4-2, HF10-2, HF15-2, HF25-2, HF37-2, and CR1-2
Note: The Event 2 parameter is not associated with an output or a function for Sheldon ovens.
Always leave Event 2 set to Off.
