Selection of the MOVIMOT® advanced drive unit

The MOVIMOT® advanced drive unit is selected according to the following items:

  1. Selecting a matching gear unit size
    (specification: Helical-bevel gear unit)
    • Requirement: The maximum output torque of the gear unit must be greater than the maximum required application torque: Ma max ≥ Mmax.
    • Based on the application calculations, a maximum application torque of Mmax = 145 Nm is produced during startup (first travel section), taking into account the efficiency.
    • Result: Helical-bevel gear units of size K.37 meet this requirement.
  2. Selecting the gear ratio with suitable output speed:
    • Requirement: The application calculations result in a maximum required output speed of nmax = 50 min-1.
    • For a large setting range and optimum efficiency, the required output speed should be reached as precisely as possible at an input speed of ne = nN = 1400 min-1 (nominal motor speed in star connection).
    • Result: Since the ideal gear ratio
      does not exist for the selected gear ratio, the next smaller, available gear ratio i = 24.99 is selected.
    • External overhung load on the gear shaft does not occur in this example.
  3. Choosing the right motor:
    • Requirement: Select a motor/inverter combination that can provide least at peak level.
    • Result: Select the DRN80MK4/D.. motor with the assigned inverter 2.0 A from the following table (from the "Technical data" chapter).

MOVIMOT® advanced

DRN..

71M4/D..

80MK4/D..

80M4/D..

90S4/D..

90L4/D..

100LS4/D..

Size of electronics cover

Size 1
without cooling fins

Size 1
with cooling fins

Electronics cover (inverter)

0020

0020

0025

0032

0040

0055

Nominal output current of the electronics cover

2.0 A

2.0 A

2.5 A

3.2 A

4.0 A

5.5 A

Nominal power

PN

0.37 kW

0.55 kW

0.75 kW

1.1 kW

1.5 kW

2.2 kW

Nominal torque

MN

2.5 Nm

3.7 Nm

5.1 Nm

7.5 Nm

10.2 Nm

15 Nm

Overload capacity of MN

 

210%

210%

210%

210%

210%

210%

  1. Checking further topics:
    • Feasibility of the selected motor/gear unit combination
    • Service factor
  2. Checking the setting range:
    • Setting range of the application
    • This means the standard setting range of 1:10 (star connection) is sufficient. The encoder option must not be selected.
  3. Thermal review of MOVIMOT® advanced
    • Requirement: In order to avoid thermal problems, the effective torque requirement of the application must be smaller than the continuous output torque of the drive unit.
    • The effective torque requirement (including the efficiency of the application) is 45.1 Nm, which corresponds to a torque requirement at the motor shaft of .
    • The selected motor/inverter combination DRN80MK4/D.. with the assigned inverter 2.0 A has a nominal torque of 3.7 Nm.
    • Result: Requirements are met.

MOVIMOT® advanced

DRN..

71M4/D..

80MK4/D..

80M4/D..

90S4/D..

90L4/D..

100LS4/D..

Size of electronics cover

Size 1
without cooling fins

Size 1
with cooling fins

Electronics cover (inverter)

0020

0020

0025

0032

0040

0055

Nominal output current of the electronics cover

2.0 A

2.0 A

2.5 A

3.2 A

4.0 A

5.5 A

Nominal power

PN

0.37 kW

0.55 kW

0.75 kW

1.1 kW

1.5 kW

2.2 kW

Nominal torque

MN

2.5 Nm

3.7 Nm

5.1 Nm

7.5 Nm

10.2 Nm

15 Nm

Overload capacity of MN

 

210%

210%

210%

210%

210%

210%

  1. Checking further topics:
    • Derating due to high ambient temperature
    • Derating due to installation altitude