Single-axis module
R127R77DR2C71MA4
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SEW-EURODRIVE recommends using oil seals made of fluorocarbon rubber (FKM) for motors and gearmotors operated on frequency inverters at motor speeds above 1800 min-1.

Encoderless control procedures for permanent magnet motors are only possible in conjunction with the MOVI-C® and MOVITRAC® LTP-B/LTE-B+ inverter series.

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Gear unit design:
Motor type:
Country/area of use:
Motor power P [kW] / Torque Ma [Nm]
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Your search: 1,5 kW
Search tolerance: -20% / +50%
Where to search: 1,2 kW - 2,25 kW
 
 
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Search tolerance: -20% / +100%
 
 
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Power utilization:
Motor speed:
Output speed na [1/min] / Gear ratio i:
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Search tolerance: -20% / +50%
 
 
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Search tolerance: -20% / +20%
 
 
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Service factor fB:
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Your search: 1,1
Search tolerance: -20% / +200%
Where to search: 0,88 - 3,3
 
 
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Every gearmotor was assigned a service factor in the SEW catalog. The service factor is the ratio between gear unit rated power and rated motor power. There are no standards on how to determine service factors. This is why service factors vary from manufacturer to manufacturer and cannot be compared.


Example:

R47DRN90L4 / i=23,28 / Ma [Nm] = 225 / fB 1,3
R47 - Mamax [Nm] = 300
Mamax / Ma = fB
300 Nm / 225 Nm = 1,33 (~1,3)


Refer to the catalog for more information:
Ventilation type:
Voltage:
Control mode:
  • With the ELSM/PMVC control modes, synchronous motors without encoders can be operated in a closed loop system. However, it is still possible to configure an additional encoder as a built-in encoder in the motor, which you can then use to enter position information for controlling the application. This additional encoder is not used to control the motor. When selecting "closed loop system with encoder", precise control of the motor is possible, even at low speeds, as well as precise positioning.
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