Omron E5AR-T User Manual page 101

Section 4 Settings Required for Basic Control
4-44
• Power Interrupted during a Soak Segment
SP
Soak time 1
PV
Power
OFF
Ramp segment Soak segment
If power is interrupted during a soak segment and then restored, the
ramp slope for the immediately preceding ramp segment is
continued and ramp operation is executed from the PV immediately
after power is restored to the target SP.
• If there is no ramp segment before the power interruption, the PV
immediately after the power is restored will be held as the present
SP and operation will be executed as a soak segment.
The ramp slope of the immediately preceding ramp segment is
continued even if the program direction (temperature increasing/
decreasing) is different from the ramp segment. Ramp operation is
executed from the PV immediately after power is restored to the
target SP.
If an input error occurs when the power is restored, control is
executed using the SP of the soak segment when power was inter-
rupted.
SP
PV
• Power Interrupted during a Ramp Segment
If power is interrupted during a ramp segment, the PV when power is
restored will be used as the start point for the present SP and ramp
operation will be executed at the ramp slope before the power inter-
ruption.
The ramp operation using the same ramp slope is the same as when
the Step Time/Rate of Rise Programming parameter is set to "step
time." The time taken to reach the target SP will not match the set
segment time.
Soak time 2
Segment time = Soak time 1 + soak time 2
Same slope
Time
Power
ON
Same slope
Time
Power
Power
OFF ON