ABB ControlMaster CM10 User Manual page 30

ControlMaster CM10, CM30 and CM50
Universal process controllers,
...Basic / ...Loop 1 Setpoints
Ramp Mode
Ramp Rate
Loop 1 Control
On/Off Hysteresis
28
1 1 1
/ , / and / DIN
8 4 2
The ramping setpoint facility can be
used to prevent a large disturbance to
the control output when the setpoint
value is changed. The rate set applies to
both the local and the remote setpoints.
Sets the ramp rate required in engineering units / hour.
Note. Applicable only if Ramp Mode is On.
Sets the hysteresis value in engineering units.
PV
ON
OFF
Reverse Acting Control Output
Note. Applicable only if Control Type is On/Off – see page 55.
PV
Displayed local setpoint value
300
200
100
0
*Example: Ramp Rate = 200 Increments/hr
PV
Setpoint
Hysteresis
Value
ON
OFF
Direct Acting Control Output
6 Basic Level
Actual (ramping) setpoint value used by
PID algorithm*
Time
1 Hour
Hysteresis
Value
Setpoint
IM/CM/S–EN Rev. R