VersaPro Temperature Controller
Page 36
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11.4 Guaranteed Soak Timer
The guaranteed soak timer works in conjunction with the alarm process value. The alarm value is the valid
band around the process setpoint. The process must be within the band around the process setpoint to start
the timer once it has been activated. If the process passes above or below the alarm band setting, the timer
will go to a HOLD state. The timer will be allowed to continue only when the process is within the band setting.
In the following figure the alarm value is set to 10 degrees for a temperature process.
Figure 7 Guaranteed Soak
11.5 Timer Alarm Behavior
The alarm contacts do not work like normal process alarms when the timer, soak, or start timer functions are
selected. If the alarm is configured for the timer, the contact will only activate when the remaining time counts
down to zero and the timer reaches the END state. Once this occurs the END Alarm message will appear on
the LCD display. The alarm will stay latched until it is acknowledged by pressing the Enter key or closing a
contact across the Digital Event terminals if the End setting is selected as the Digital Event function. The Rem
light flashes during the END state and stops flashing when the timer is acknowledged and returns to the IDLE
state.
11.6 Timer State Diagram
The following diagram shows the conditions that control the state of the timer function.
