In the effort to improve building energy efficiency, cooling tower operation and control can be optimized using Variable Frequency Drives (VFDs) to modulate the cooling tower fans. Not only that, the condenser water loop (temperature sensors, bypass valves, fill valves) can be controlled directly from the drives as well. Analog and digital inputs, outputs, safeties, PID loops and network communications are already available in today's VFDs.

The ABB ACH580 Intelligent Pump Control can also be used to allow the drives to manage a lead, lag and automatic rotation configuration. Integration with your building automation will be simplified as all tower operation can be controlled internally without the need for additional controllers.

00:00 Intro
00:56 Default cooling tower connections
01:54 Cooling tower components and functions
07:49 Drive features for cooling towers
08:58 Programming PIDs, Sleep and Wake
11:53 Programming Supervision
17:28 Programming motor pre-heating
19:45 Programming reverse direction, de-icing
21:26 Programming Timed function, scheduling
24:00 Adaptive Programming
24:21 Multi-cell tower intelligent drive control
25:31 Programming IPC for multi-cell tower
32:02 Summary of parameters and HVACR applications