Using the SP Ramp Function to Limit the SP Change Rate
Alarms during SP
Ramp Operation
The operation of alarms during SP ramp operation depends on whether
alarms are set to be based on the ramp set point or the target set point (refer
to the following diagrams). The set point to be used is set in the Alarm SP
Selection parameter. (Refer to page 244 of H156.)
Alarm SP Selection = Ramp SP (Alarm Type: 1 (Upper/Lower Limits))
Temperature
Alarm SP Selection = Target SP (Alarm Type: 1 (Upper/Lower Limits))
Temperature
Alarm output ON
Alarm output ON
Time
Alarm output ON
Alarm output ON
Time
Section 4-7
83