ABB ControlMaster CM10 - Page 71

ControlMaster CM10, CM30 and CM50
Universal process controllers,
1
/8,
1
/4 and
1
/2 DIN 7 Advanced Level
IM/CM/S–EN Rev. R 69
Fig. 7.2 Ramp Types
Note. Ramping segments can have a different hysteresis to soak segments.
Seg. 1
Seg. 2
Seg. 3
Seg. 4
Seg. 5
Start
Time (hours or minutes)
Holdback active
outside hysteresis
limits
Hysteresis applied Hi-Lo
(above and below the set point)
Process
Hysteresis applied Hi
(above the set point)
End of profile (revert to
local set point or repeat
of profile)
Skip forward
Adjustable ramp rates
Set point (Eng. Units)
Manual pause
Adjustable holdback hysteresis
1. for Ramp segments
2. for Soak segments
Set point