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Compact book-style drives now offer even greater versatility

28 July 2010

Additional EMC filtering options, configurable analogue inputs and enhanced fieldbus connectivity are among new features that have been added to the latest M-MAX variable speed drives from Eaton, which are available with ratings of up to 7.5kW. Featuring compact book-style construction and competitively priced, M-MAX drives can be configured by the user for either V/f or sensorless vector control.
 

A large built-in display and operating unit makes it easy to configure the drives and to monitor their performance, while an electronic setpoint potentiometer facilitates accurate speed setting. Support is now also provided for users to set up and store two separate parameter sets, with switching between the two sets controlled by a signal to one of the drive’s digital inputs.
 
The versatility of these easy-to-use drives is further enhanced by their 1.5x short-term overload capacity, flying-start feature, PID functionality and, on larger units, an integrated brake chopper.


As standard, M-MAX drives feature a built-in EMC filter that provides compliance with Categories C2 and C3 of IEC/EN 61800-3. Now, however, they can also be supplied in filter-less versions for use with external filters to cater for special applications, such as those where C1 compliance is needed or where earth leakage must be minimised.
 
Six digital inputs, which can be set by the user for positive or negative logic, are provided, together with one transistor and two relay digital outputs, two analogue inputs configurable for voltage or current operation, and one analogue output. These extensive I/O facilities mean that, in many applications, the M-MAX drive can provide all of the control logic required, eliminating the need to use a separate programmable controller or intelligent relay.
 
To facilitate integration with modern networked control systems, M-MAX drives have an RS485/Modbus interface. Options are now available, however, to extend their connectivity so that they can interface directly with other types of fieldbus system, including CANopen, PROFIBUS DP and DeviceNet.
 
The M-MAX range includes single-phase 230V models with ratings from 0.18 to 2.2kW, three-phase 230V models with ratings from 0.25 to 2.2 kW and three-phase 480V models with ratings from 0.37 to 7.5kW. All models carry CE, UL, cUL and cTick approvals, allowing them to be used in virtually every country of the world.
 


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