Chapter 5 – Standard Application Macro Programs
5-2
ACH 500 Programming Manual
Macro Applications and
Access
Table 5-1 Macro Applications and Access
Refer to Appendix A – Complete Parameter Settings for the alternative
settings for all parameters.
Macro
Suitable Applications
Controls
Select
HVAC
General HVAC applications, such as supply fans, return fans, and
pumps.
Cover mounted
HOA switch and
speed pot. External
reference and start
command.
HVAC
Floating Point
Control
HVAC applications using a Dwyer Photohelic
or similar instrument
to maintain static pressure.
Speed increase and
speed decrease
contacts.
FLOAT PT.
HVAC-PI
Intended for use with different closed loop control systems such as
pressure control, level control, and flow control. For example:
• Booster pumps of municipal water supply systems.
• Automatic level control of water reservoirs.
• Booster pumps of district heating systems.
• Supply or return fans of HVAC system.
Process
HVAC-PI
Pump and Fan
Closed loop control systems utilizing pumps or fans such as constant
pressure control, level control, or flow control.
• Booster pumps of municipal water supply systems.
• Automatic level control of water reservoirs.
• Pumps and fans of waste water treatment plants.
• Cooling tower fan drives.
• Combustion air and exhaust gas fans of power plants.
Process
P & F AUTOM.