Blower Configuration Screen - Emerson Vilter PLC Operation Manual

Section 7 • Blower Configuration and Control Setpoints
Blower Confi guration Screen
Screens may have inverted colors for ease of
BLOWER CONFIGURATION
One of the following selections may be made for each
Blower:
• Out of Service: The blower will not run if selected.
Blower-Specifi c alarms and trips will not be generated.
• Preset Speed 1-4: The blower will run at the preset
speed. The preset speeds are settable on the Blower
Control Setpoints (Suction or Discharge Pressure)
screen.
• PID Speed Control: The blower will run at the speed
commanded from the Suction Pressure or Discharge
Pressure control PID algorithm. If multiple blowers
are run in PID Speed Control, they will all run at the
same speed.
7 – 2
NOTE
readability.
Figure 7-2. Blower Confi guration Screen
CONTROL MODE
• Target Suction Pressure: This is the desired suction
pressure the blower will try to maintain.
• Upper and Lower Deadband: This is a range of pres-
sures above and below the Target Suction Pressure.
Within this range, no capacity slide position adjust-
ments will be made.
• Upper and Lower Proportional Band: This is a range
of pressures above and below the Target Suction
Pressure. Within this range, the controller will make
proportionally smaller adjustments to capacity slide
position.
SUCTION/DISCHARGE PRESSURE SOURCE
The suction and discharge pressure source determines
which instrument will be used to control the blower
speed PID algorithm and load limits. A valid pressure
source must be selected for both suction and discharge
pressure.
Blower Package PLC Operation Manual •Vilter/Emerson • 35391BLP