Adjusting the setpoint ramp rate, Selecting automatic or manual mode, Control enable or disable – West Control Solutions ProVU 4 User Manual
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ProVU4 Controller, Profiler & Recorder/Controller - Product Manual
Page 44
Configuration & Use
59407, Issue 1 – March 2008
Press
to select the Setpoint Value Display and Adjustment screen
Press
or
to adjust each Local Setpoint to the required value.
A Remote Setpoint value cannot be altered from the key pad.
Adjusting the Setpoint Ramp Rate
The Setpoint Ramp Rate may be adjusted in the range 0.1 to 9999.0 (in display units per
hour) and OFF. When the Setpoint Ramp Rate is set to Off, setpoint changes will step
immediately to the new value.
Press
to select the Setpoint Ramp Rate screen
Press
or
to adjust ramp rate to the required value
.
Note:
The SETPOINT ramp feature disables the pre-tune facility. The self-tune facility will
calculate new tuning terms only after the SETPOINT has completed the ramp.
Selecting Automatic or Manual Mode
Depending on the Control Configuration settings, an Auto/Manual selection screen may be
shown which allows operators to select between automatic or manual control. Switching to or
from manual mode is made via Bumpless Transfer. In Manual mode the Setpoint display is
replaced by a 0 to 100% power output level, labelled “Man”.
Press
to select the Manual Power screen
Press
or
to adjust required power to the required value
.
Note:
In Manual mode a running profile will hold until automatic control is reselected.
CAUTION:
The Manual Mode power level can be adjusted from 0 to 100% (-100 to +100% for
dual control). It is not restricted by the Output Power Limit parameters.
Control Enable or Disable
Depending on the Control Configuration settings, a Control Enable/Disable screen may be
show. Disabling control turns of all control outputs (Primary and Secondary power output
levels are set to zero).
Press
to select the Control Enable screen
Press
or
to change between control enable and disable.
CAUTION:
Use with care. The instrument is not able to control the process when control is
disabled. The Output Power Lower Limit parameters are also ignored.