Hydrovar Pump Controller Installation & Operation Manual
Hydrovar Pump Controller Installation & Operation Manual
Hydrovar Pump Controller Installation & Operation Manual
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Programming<br />
0255<br />
0255 CONF. FMIN f -> 0<br />
Possible settings: f->0 or f->f min<br />
<strong>Operation</strong> at minimum frequency<br />
f->0: After reaching the required pressure with no demand the frequency drops to the selected MINIMUM<br />
FREQUENCY [0250] and the HYDROVAR will continue to run for the selected F MIN TIME [0260]. After this<br />
time the HYDROVAR will stop automatically.<br />
f->f min: The pump will never stop automatically. The frequency will only drop down to the selected MINI-<br />
MUM FREQUENCY [0250]. To stop the pump the external ON/OFF (E-stop) must be opened or the ▼ (Stop)<br />
button must be pressed.<br />
Applications: circulation systems<br />
0260<br />
Caution: The setting f->f min can overheat the pump if there is no flow through the pump.<br />
Use when there is a bypass line for circulation pumps!<br />
0260 FMIN TIME<br />
0 s<br />
Possible settings: 0 – 100 sec<br />
Delay time before shut off below MIN. FREQ.<br />
After running below MIN. FREQ.for this selected time, the pump will stop if parameter CONFIG. FMIN<br />
[0255] is set to f -> 0.<br />
0265<br />
0265 BOOST<br />
5 %<br />
Motor starting voltage in % of connected supply voltage<br />
Possible settings: 0 – 25% of the input voltage<br />
This parameter determines the characteristics of the voltage/frequency curve. In particular, it refers to the<br />
voltage increase during startup as a percentage of the nominal voltage. This setting should be kept as low<br />
as possible to protect the motor from thermal overload at lower frequencies. If the boost is set too low, a<br />
failure (OVERLOAD) may occur because the starting current is too high.<br />
0270<br />
0270 KNEE FRQ.<br />
60.0 Hz<br />
Knee frequency<br />
Possible settings: 30.0 – 90.0 Hz<br />
This parameter determines the frequency at which the HYDROVAR generates its maximum output voltage<br />
(value of the connected input voltage). For standard applications this frequency should be set to MAX.<br />
FRQ. [0245] (Default Setting 60Hz).<br />
Caution<br />
This parameter should rarely be adjusted! Incorrect setting can cause an overload<br />
error and damage to the motor. Contact factory before changing.<br />
51<br />
G<br />
G<br />
G<br />
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