R147 DRN280M4 Helical Speed Reducer MDX61B0014 5A3 4 00
This SEW helical speed reducer model 70-10BA16 pairs reliably with DR Series AC motors for industrial drive applications. The motor supports rated torque output under two voltage tolerance ranges. Range A allows continuous S1 duty with minor thermal and parameter deviations. Range B delivers rated torque but cannot sustain continuous operation, with higher temperature rise. Undervoltage from weak power supply or undersized cables reduces power, torque and speed, especially during startup. Suitable circuit breakers, protective devices and EMC measures are required for safe, stable operation.
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Estimated Delivery Date: Oct 19-Oct 19
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Specifications
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SEW Gear Motor | Helical Speed Reducer Model 70-10BA16, DR Series AC Motors
Circuit Breakers & Protection Devices
General Project Planning Guidelines
Within Tolerance Range A, the motor shall maintain continuous-duty (S1) operation while delivering full rated torque. Minor deviations from rated voltage and rated frequency specifications are acceptable for other performance parameters and thermal characteristics.
Within Tolerance Range B, the motor can still output rated torque, yet continuous S1 operation is not supported. Temperature rise and deviations from nominal motor data will be more significant compared to Tolerance Range A. Frequent motor operation at the boundary limits of Tolerance Range B should be avoided.
Undervoltage Operation
When undervoltage occurs, typically caused by a weak power supply network or undersized motor cables, catalog performance figures including power output, torque and rotational speed cannot be achieved. This effect is most noticeable during motor startup, where the starting current reaches several times the rated current.
3.2 Circuit Breakers and Protective Equipment
EMC Measures
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