ABB ACH550-UH User Manual page 397

ACH550 E-Clipse Bypass User's Manual
Energy Saving Estimator setup
Verify the connected equipment is ready for operation. Set the following Parameters:
• Parameter 1627 – set to local cost of energy in cents per kilowatt hours
• Parameter 1629 – set to desired hours of initial bypass operation to establish
energy usage baseline
• Select Bypass Mode on E-Clipse Keypad
• Parameter 1628 – set to ENABLED
• Start Bypass
• Run Bypass for at least the LEARN TIME set in Parameter 1629
• Select Drive Mode on E-Clipse Keypad
• Operate System normally
Note: The learn mode is terminated by any of the following conditions:
User clears the learn mode request (Parameter 1628 = NOT SEL)

The running time in learn mode equals the time set by Parameter 1629

The user enters drive mode.

At the end of learn mode, the average bypass power is calculated.
From that point on, whenever the system is operated in drive mode, it keeps a
running total of the energy savings.
The energy savings is measured from a certain point in time. This starting point is
triggered by any of the following events:
Learn mode is terminated

Drive parameter 0115 (KWH COUNTER) is reset

Bypass parameter 0114 (KWH SAVED) is reset

2-51
Bypass functions overview