94 Application macros
TRAD (Traditional pump) control macro
Description and typical application
This macro is suitable for a pump station where one pump at a time is directly
controlled by the drive, and the rest of the pumps are direct-on-line and switched on
and off by the drive via a relay/contactor system. It is possible to have one pump
permanently connected to the drive, or to connect any one of the pumps to the drive
using contactors. The drive is capable of controlling up to eight parallel pumps.
By default, process reference (setpoint) is set to 40%, but can alternatively be
adjusted through e.g. analog input AI1. The process actual value, or feedback signal,
should be connected to analog input AI2. The start command is given through digital
input DI1. Relay outputs are used to control auxiliary pumps.
Default settings
Below is a listing of default parameter values that differ from those listed in chapter
Additional parameter data (page 287).
Parameter
Trad. pump control
macro default
No. Name
14.07 DIO2 out src Fault(-1)
14.42 RO1 src Trad pump1
14.45 RO2 src Trad pump2
16.16 Menu set active Trad short
16.20 Macro selected Trad ctrl
26.02 Const speed sel1 C.FALSE
75.01 Operation mode Trad ctrl
75.02 Nbr of pumps 2
75.25 Drive start dly 1 s
78.01 Autochg style All stop
78.03 Interlock mode On
78.06 Interlock pump 1 DI2
78.07 Interlock pump 2 DI4
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