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Permanent Magnet Motor Drive Systems (PMA7)

Permanent magnet drive system PMA7 provides a PM (permanent magnet embedded synchronous motor) drive system as a variable drive which offers advanced functions, small size, and energy savings. PMA7 can be used in a wide range of fields from stand-alone speed variation to system use.
   
 
Most Advanced Drive with Enhanced Functions
   
  Applicable to systems and high-performance machines.

Vector control system with sensor enables high-precision speed control, vector control, and torque control.

Communication function secures the protective features.
   Energy loss is reduced by 35%.

   
 
Small-size and Lightweight PMA7 Allows Downsizing of Machine Facilities.
   
  PMA7 is smaller and lighter than the induction motor and DC motor, allowing size reduction of machine facilities.

Approx. 40% reduced motor mass and approx. 35% reduced motor capacity.
   
 
Sample Application to Various Fields
   
  Load Machine and Needs
Merit
Pump
Fan
Compressor
Transport machine
Molding machine
For on-board use
Energy saving
Weight reduction
Space saving
Maintenance saving
Ambient resistance
   
 
Detailed Specification
 
Item
Standard Specification
Applicable motor Rated output /voltage 200V class: 30 to 90kW
400V class: 30 to 315kW
Revolution 500, 1000, 1500, 1800 min.-1
Input power supply Voltage (*1) 3-phase 200/400VAC or 220/440VAC (within +10%/-15%)
Frequency 50/60Hz (within +/-5%)
Control method
 Sine wave PWM control, vector control, full-digital control, speed control, torque control, auto field reduction control
Overload capacity
 150%/min.
Braking method
 Free-run stop/option; engine braking (with braking resistor used)
Speed control Operation command Analog input 0 to +/-10V (12-bit AD conversion)
Reversible operation Switched according to command input polarity or contact point
Speed control range 1:500
Speed fluctuation rate Digital setting: +/-0.01%, Analog setting: +/-0.1%
Acceleration /deceleration Linear acceleration-deceleration/S-acceleration-deceleration changeover, 0 to 6000 sec. (individually settable for acceleration and deceleration)
Speed feedback Encoder (A, B, Z, U, V, W)
Torque control Torque command input +/-10VDC/max. current
Function settings
 Input key switches
Protective features
 Current limit, overcurrent, overvoltage, load-side short, load-side grounding, undervoltage, electronic thermal overload, start-time arm overcurrent, start-time load-side overcurrent, dynamic braking resistance overcurrent/overload, fin heating, emergency stop, etc.
*1: +/-10% in case of continuous operation (100% load).
   
 
Sample Application
 
 
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