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News

Electronic motor manager turns a motor into a sensor

Phoenix Contact : 19 November, 2012  (New Product)
The Contactron Electronic Motor Manager (EMM) precisely monitors the effective power consumed by motors and uses this data to analyse errors and provide early warning to the controller.
Electronic motor manager turns a motor into a sensor

An electronic motor management module converts the motor itself into a sensor. The user can set the parameters to detect dangerous operational conditions, such as overload, underload, pollution and wear. The module provides advanced diagnostics and allows the user to make informed decisions for predictive maintenance and better operation. In a worst case scenario, the unit can shut down the motor to protect the system. For example, the unit could detect a clogged filter in a pump, preventing dangerous dry running conditions. The unit's onboard inputs and outputs facilitate direct control of motor starters. It provides easy-to-understand remote indication of system problems. The 22.5mm module has selectable tripping curves of class 10 to class 30, for full three-phase motor protection. Up to 16 motor managers can be controlled with a single Profibus gateway, reducing costs, space and wiring time.

Electronic motor management modules

EMM modules offer all the advantages of modern real power monitoring: currents, voltages, and phase angle are recorded continuously. Permanent status monitoring with high scanning rates enables complete system protection.

Status monitoring by means of motor management
Monitor motors and systems by means of electronic motor managers with parameterisable switching and signalling thresholds.

Direction of rotation: the thresholds can be the same for both directions of rotation or set separately. In the event of a switching threshold overrange or underrange, the motor manager shuts down the system. Forced shutdown can also be delayed. In addition, the module generates signals to detect the direction of rotation – asymmetry and phase failures are indicated immediately.

Parameterization: for parameterization, the EMM module evaluates the consumed real power. Voltage fluctuations and the drive machine load are not included. The real power therefore provides a more precise basis for parameterization than merely taking the current into consideration.

More reliable system protection: in the case of motor-driven pumps, the lower performance threshold provides reliable protection against hazardous dry running. The upper performance threshold responds quickly and reliably to blockages caused by foreign objects. Machine tools are monitored and protected in a similar way when drilling, milling or grinding.

Motor management with the FDT/DTM software: through being able to request additional data, electronic motor management modules ensure even safer systems operation.

  • Apparent, real, and reactive power
  • Currents and voltages
  • Phase angle
  • Cycle and operating hours counter
  • Power meter
  • Thermistor monitoring
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