3 Engineering Information
3.1 Power Supply and Consumption
3.1.1 Power Consumption
Figure 18: Electrical power consumption
(Measured on OEM model with DCP-30 pump head but also representative for EasyConnect and Stand-Alone models)
3.1.1 Inrush Current
When selecting a AC/DC power supply the inrush currents (currents during power-on) shown in Table 6 shall
be considered. If the specifications of the power supply are unclear a test with multiple power-on cycles is
recommended to assure proper operation.
Table 6: Inrush currents of power supply driver during power on of driver
(Measured at 24 VDC + 10% on OEM model but also representative for EasyConnect and Stand-Alone models)
3.1.2 Evaluation of Power Supplies
If other power supplies than the standard specified ones are used, it is recommended to evaluate them
under demanding operating situations like fast braking from maximum speed and during power on and take-
off of the impeller.
3.2 Temperature Monitoring
To avoid overheating of the system, the controller and motor temperatures within the driver are monitored. If
one of both temperatures exceeds 80°C (176°F) for a period of more than 10 minutes, the system goes into
an error state and the pump stops. At 90°C (194°F), the system stops immediately.
If 65°C is exceeded a warning is given within the driver announcing to the user that the driver is running near
the thermal limit (see explanation in Section 3.3). For the EasyConnect and OEM models the warning signal
can be monitored with the Levitronix
®
Service Software or configured on one of the digital outputs. For the
Stand-Alone model the temperature can be monitored on the display.
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