Fan Control Application Manual
17
AC30V series Variable Speed Drive
Sequencing
Setup::Application::Sequencing
The Fan Control Application introduces 3 additional sequencing parameters.
PNO
Parameter Descriptions
1959
Use Auto Timer
When TRUE, the AUTO RUN Preset Speed is selected by the Time Of Day Timer function. When FALSE (the default), the Preset
Speed is selected by digital inputs.
1960
Start On Setpoint
When TRUE and either AUTO RUN or MANUAL RUN is TRUE, the Drive will automatically run whenever the active Setpoint is non-
zero.
1961
Power Up Start
When TRUE the Drive will immediately run on power up if the AUTO RUN or MANUAL RUN digital input is TRUE. If this parameter is
FALSE (the default) a FALSE to TRUE transition of the RUN input is required.
Functional Description
Use Auto Timer
:
This allows Time Of Day Timer to override the digital inputs for the selection of the Preset Speed.
Start On Setpoint
:
This feature removes the need of applying a run command. Whenever a non-zero (±0.5%) becomes active from either the Preset Speeds or
Analog input, a run command is automatically issued.
Caution
The Drive may run without warning.
Power Up Start
:
This feature removes the requirement of a transition from FALSE to TRUE on the run command. This allows an immediate start of the motor
when power is applied to the Drive.
Caution
The Drive may run without warning.
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