ABB CM30 User Manual page 39

ControlMaster CM30 and CM50
Universal process controllers,
...Control / ...Loop 1 (2) Setpoints
RSP Ratio
RSP Bias
RSP Fault Action
No Action
Local
Local Default
Default Setpoint
Ramp Mode
Ramp Rate
Select Sources
LSP 1/2 Toggle
LSP1 (4) Select
Local Select
IM/CM/ED–EN Rev. B
1 1
/ and / DIN
4 2
When the remote (external) setpoint is selected the control setpoint value is:
(ratio x remote setpoint input) + bias
Sets the remote setpoint bias in engineering units – see Appendix C, page 83 for description
of analog input units.
The action required when a fault occurs with the remote setpoint.
No fault action.
Selects the local (internal) setpoint mode.
Selects the local (internal) setpoint mode and sets its value to the default setpoint.
Sets the value required for the local (internal) setpoint under remote setpoint fault conditions.
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
The selection of local setpoints and the changing of setpoint mode between local (internal)
and remote (external) can be controlled by digital signals; either from internal digital signals
(for example, alarm states) or from external signals via digital inputs (or digital
communications) – see Appendix A, page 79 for description of sources.
The source required to select either local setpoint 1
(LSP1) or local setpoint 2 (LSP2). This source is
level-triggered. A low signal locks the local setpoint as
local setpoint 1 (LSP1) and a high signal locks it as local
setpoint 2 (LSP2).
The source required to select local setpoint 1 (LSP1) as
the current local setpoint. Selection is made on the rising
edge of the digital signal.
The source required to select local setpoint mode (or local
ratio mode when the ratio controller / station template is
selected).
Displayed local setpoint value
Actual (ramping) setpoint value 
used by PID algorithm*
1 Hour
*Example: Ramp Rate = 200 Increments / Hour
7 Advanced Level
Time
LSP2
LSP1
LSP1
Local
Setpoint
Mode
LSP1
37