75
0530
0530 DISABLE FRQ
30 Hz
Disable Frequency (For Cascade Relay Only!)
Possible settings: 0.0 – 120.0 Hz
The Frequency to switch off the fixed speed pumps in Cascade Relay-Mode can be set
by this parameter.
If the Master Inverter goes below that frequency for longer than the pre-selected DISABLE
DLY [0535] and the system pressure is higher than the EFFECTIVE REQ. VALUE [03]
(REQUIRED VALUE [02] + ACTUAL VAL. INC [0505]), the first follow-up-pump stops.
0535
0535 DISABLE DLY
5 sec
Disable Delay time (For Cascade Relay Only!)
Possible settings: 0 – 100 sec
Delay time before switching off the follow up pumps in Cascade Relay mode.
0540
0540 DROP FRQ
42 Hz
Drop Frequency (For Cascade Relay Only!)
Possible settings: 0.0 – 70.0 Hz
This parameter is used to prevent systems from water hammers. Before a
following pump starts up, the Master Inverter will drop to the selected frequency. If the
DROP FREQUENCY is reached, the follow-up-pump gets released and the Master Inverter
will continue with normal operation.
0545
0545 OVERVALUE
OFF
Overvalue
Possible settings: OFF – pre selected Sensor range
If this selected value is reached, an immediate shut-off of the follow-up-pumps is
executed.
e.g. REQUIRED VALUE [02]: 5.00 bar
OVERVALUE [0545]: 7.50 bar
If three pumps are running (1 Master Inverter + 2 Basic Inverter) and a system pressure of
7.50 bar is reached, one after another basic units shuts off immediately.
This parameter prevent the system against Overpressure in case the HYDROVAR has been
parameterized incorrectly.
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