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This Glossary explains the technical terms and param-
eters used in this manual. The entry type is also shown:
General Definition: Terms normally applicable all
models.
Controller Definition: Terms applicable to Controller
models only.
VMD Controller Terms applicable to VMD
Definition: Controller models only.
Limit Controller Terms applicable to Limit
Definition: Controller models only.
General Parameter: Parameters normally applicable
all models.
Controller Parameter: Parameters applicable to
Controller models only.
VMD Controller Parameters applicable to VMD
Parameter: Controller models only.
Limit Controller Parameters applicable to
Parameter: Limit Controller models only.
Controller Tuning Parameters relating to the
Parameter: tuning of Controller models.
Active Setpoint
Type: Controller Denition
The Active Setpoint is the setpoint used as the current
target Setpoint Value. Some controllers can have more
than one setpoint (e.g. Setpoint 1 and 2 or Local and
Remote Setpoints), but only one of these is active at
any time.
Also refer to Actual Setpoint, Remote Setpoint, Set-
point, Setpoint Select and Setpoint Select Enable.
Actual Setpoint
Type: Controller Denition
Actual Setpoint is the current value of the setpoint. This
may be different to the Active Set-point’s target value
if the setpoint is currently ramping. The actual setpoint
will rise or fall at the ramp-rate set, until it reaches the
target setpoint value.
Also refer to Active Setpoint, Setpoint, Setpoint Ramp
Enable and Setpoint Select.
16 Appendix 1 - Glossary