ITT HYDROVAR Series User Manual

74
The following 3 parameters are responsible for starting the lag pumps and for calculation
of the new required value as well.
0505
0505 ACT.VAL.INC.
0.35 Bar
Lift Value
Possible settings: 0.00 – to the pre selected sensor range
0510
0510 ACT.VAL.DEC.
0.15 BAR
Fall Value
Possible settings: 0.00– to the pre selected sensor range
0515
0515 ENABLE FRQ
48.0 Hz
Enable frequency for the next power unit
Possible settings: 0.0 – 70.0 Hz
Using this parameter the desired release frequency for the following pumps can be
selected. If a pump in the system reaches this frequency and the system pressure drops
below the REQUIRED VALUE [02] - ACTUAL VALUE DECREASE [0510], the next pump is
switched on.
0520
0520 ENABLE DLY
5 sec
Enable delay time (For Cascade Relay Only!)
Possible settings: 0 – 100 sec
If the above parameters for switching on a follow up pump are satisfied, the follow-up-
pump will start after this selected time.
0525
0525 SW DELAY
5 sec
Switch Delay (For Cascade Relay Only!)
Possible settings: 0 – 100 sec
Delay Time between two switching actions of the follow-up-pumps.
That parameter prevents the system against repeated switching actions caused by the
variation of the consumption.
S
S
S
S

ITT HYDROVAR Series Specifications

General

Brand	ITT
Model	HYDROVAR Series
Category	Control Unit
Language	English