Model: LC5296-XP-AT/LC5296-XP/LC5296-XP-I
Doc. Ref. no.:- m61D/om/101
Issue no. 17
User’s Manual Page 44 of 56
8.3 Ramp and Soak Function:
(LC5296-XP-AT Only)
This function is used to stop the sudden change of set point. The ramp function is
performed in following conditions. The target set point is changed. Target set point
number is changed. (For example: Switching from SP-1 to SP-2). The power is
turned ON or the controller is recovered from power failure. A change is made
frommanual mode to auto mode.
When the process value crosses the set point value for the first instant, a “soak
period” begins.
The ramp function will be performed when ramp unit parameter is selected as MInR
(minute rate) or HRR (hour rate). The ramp rate can be programmed by setting the
parameter rmp.r.
The Soak rate is programmed by setting sok.r. Soak time will be performed
according to s.hod and s.rst. When the soak type is s.hod it will not reset the
soak rate when the power is down and when the Soak type is s.rst it will reset the
soak rate when the power is down.
The ramp and Soak function will be cancelled in following conditions.
A change is made from Auto mode to manual mode.
Sensor Failure occurs.
Auto tuning function is activated.
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