vertical centrifugal immersion pumps - SONDERMANN Pumpen + ...

ELECTRONIC PROTECTIONFOR CENTRIFUGAL PUMPSElectronic monitoring of motor currents protects thepump from dry running, overheating and overload.If the above mentioned operating states are not absolutelyimpossible with your installation, you should usean electronic process monitor to switch off the pumpbefore it is damaged. Such monitors will not only avoiddamage to the pump, but also downtime and costsresulting thereof. At the same time, the monitor checksthe pumping process for the set delivery rate. Oncethe cause of a malfunction is eliminated, the pump isimmediately ready to continue operation. The processmonitor is easy to install into the pump’s power supplyunit. As it is not necessary to build it into pipe runs,this process monitor also is ideal to retrofit existinginstallations. Four different types of process monitorsare available:RPR CONTROL 100-1to be built into control cabinets (mounted on top-hat rail)without programming unit.RPR CONTROL 100-2to be built into control cabinets (mounted on top-hat rail)with integrated programming unit.RPR Control 100-1 RPR Control 100-2RPR CONTROL 100-3Field device with power section of up to 4.0 kW (up to7.5 kW optionally available), mounted in an IP 65 casingfor installation in the field (e.g.at the filter), complete withindicating lamps and push-button but without programming unit.SEPARATE PROGRAMMING UNITRPR-Control 100-3Hand-held appliance with cable and plug to programme theswitching thresholds of RPR-Control 100-1 and RPR-Control 100-3.FUNCTIONAn overload controller with analogue output monitors the actualpower of the pump motor. There are four switching thresholdsdefined:• dry-running (fault, the motor is switched off);• overheating (fault, the motor is switched off);• overload (fault, the motor is switched off);• filter contaminated (warning).separate programming unitThe switching thresholds are user-programmable.Also included is a real-time clock with elapsed-timemeter, e. g. to monitor maintenance intervals.29