Firmware Manual

9000X AF Drives
MN04004001E
For more information visit: www.eaton.com
7-1
August 2010
Chapter 7 — Pump and Fan Control Application
Introduction
Select the Pump and Fan Control Application in menu M5. See Chapter 5 of the 9000X AF
Drives User Manual.
The Pump and Fan Control Application can be used to control one variable speed drive and
up to four auxiliary drives. The PID controller of the frequency converter controls the speed
of the variable speed drive and gives control signals to start and stop the auxiliary drives to
control the total flow. In addition to the eight parameter groups provided as standard, a
parameter group for multi-pump and fan control functions is available.
The application has two control places on the I/O terminal. Place A is the pump and fan
control and place B is the direct frequency reference. The control place is selected with
input DIN6.
As already its name tells, the Pump and Fan Control Application is used to control the
operation of pumps and fans. It can be used, for example, to decrease the delivery pressure
in booster stations if the measured input pressure falls below a limit specified by the user.
The application utilizes external contactors for switching between the motors connected to
the frequency converter. The autochange feature provides the capability of changing the
starting order of the auxiliary drives. Autochange between 2 drives (main drive + 1 auxiliary
drive) is set as default. See Page 7-5.
● All inputs and outputs are freely programmable
Additional functions:
● Analog input signal range selection
● Two frequency limit supervisions
● Torque limit supervision
● Reference limit supervision
● Second ramps and S-shape ramp programming
● Programmable Start/Stop and Reverse logic
● DC-brake at start and stop
● Three skip frequency areas
● Programmable U/f curve and switching frequency
● Autorestart
● Motor thermal and stall protection: fully programmable; off, warning, fault
● Motor underload protection
● Input and output phase supervision
● Sleep function
The parameters of the Basic Application are explained in Chapter 8 of this manual. The
explanations are arranged according to the individual ID number of the parameter.