REXRTOH MSK series synchronous servo motor

Strictly follow the standard (such as DIN EN ISO 4762) to select 8.8 grade screws and tighten them to the specified tightening torque (e.g. M8 screws with approximately 24.6 Nm). Excessive locking can damage the threads.

Foundation installation (B35):

Pay attention to the distance from the centerline of the motor shaft to the bottom edge of the foot, which should match the dimensions on the machine side.

During installation, it is necessary to accurately align the centerline of the motor shaft with the load shaft.

Important limitation: When installing the foundation, it can only withstand radial forces perpendicular to the installation plane (± 15 °). It is not allowed to transmit radial forces generated by gear meshing through the foundation, otherwise it may cause damage to the motor. If such force exists, flange installation must be used instead.

Installation of transmission components:

When installing transmission components such as couplings and pulleys, appropriate pulling tools must be used, and direct tapping of the motor shaft end is strictly prohibited.

Accurate installation requires the use of standard centering holes (DIN 332-2) at the shaft end. If necessary, the transmission element (heat sleeve) can be heated.

The transmission components themselves must undergo dynamic balancing, and the balance level must match the "full key balance" state of the motor. The tension of the belt shall not exceed the allowable radial force limit.

Integration of electrical connections and cooling systems

Power supply and encoder connection:

It is strongly recommended to use Rexroth original finished cables to ensure EMC performance, mechanical reliability, and protection level.

Before connecting, ensure that the plug and socket are clean, dry, and undamaged. For threaded connectors (such as RLS series), they must be fully tightened.

Equipment connectors are typically designed to be rotatable (such as RGS1000 with a maximum torque of 12 Nm, RLS1000/1200 with a maximum torque of 18 Nm) to accommodate wiring directions, but the number of rotations should not exceed 10 times and the maximum torque should not be exceeded.

The protective earth (PE) connection must be permanently reliable, which is the basic guarantee to prevent electric shock.

Junction box connection (applicable to high-power motors):

For models MSK101, 131, 133, etc., junction boxes (such as RZK3100, RLK1300) may be used.

When connecting, it is necessary to use an adapter plate and a suitable cable sealing sleeve. The core wire connection requires the use of wire end sleeves (WEF) and tightening with the specified torque (such as M6 screws with approximately 2.5 Nm).

Before installing the box cover, it is necessary to check the sealing strip and apply thread locking agent (such as Loctite 243) to the fixing screws, with a tightening torque of approximately 6.5 Nm.

For dual cable connections (to meet current carrying capacity or bending radius requirements), matching fuses (F1) should be installed near the power output in the controller cabinet.

Liquid cooling connection (for MSK -... - N models):

The cooling interface of the motor is usually a pipe thread (such as G1/8, G1/4). Remove the factory protective cover before connecting.

Strictly follow the prescribed screwing depth and tightening torque (such as G1/8 screwing 14-15mm, torque 14-15 Nm), excessive screwing or tightening will permanently damage the motor threads.

It is recommended to use a joint with an O-ring axial seal and avoid using raw tape or hemp thread to prevent debris from entering the cooling circuit or generating excessive stress.

The maximum inlet pressure is usually 6 bar, and the coolant needs to meet the requirements in the project planning manual (non corrosive, low conductivity, etc.). The machine manufacturer is responsible for the sealing inspection and regular maintenance after connection.

Fan unit connection (for MSK -... - F models):

Connect the fan (single-phase or three-phase) according to the nameplate voltage.

For axial fans, the encoder plug may be covered by the fan cover and the cover plate needs to be removed for connection.

Debugging, operation, and monitoring

Pre debugging inspection:

Take corresponding measures according to the storage time (see Table 5-1). If stored for more than 12 months, check the brake surface and electrical contacts, and may require no-load operation to "test" the bearings; After more than 60 months, it is recommended to replace the bearings and encoder.

Ensure that all electrical connections are correct and secure.

Check and ensure that the brake voltage is maintained at 24V ± 10% and functioning properly.

Confirm that the protective cover for the rotating components is installed and the keys are secured.

Operation monitoring:

Operate under the environmental conditions specified in the project planning manual (ambient temperature 0-40 ° C).

Monitor abnormal noise during operation and observe whether the vibration increases.

Regularly check the cleanliness of the motor and fan unit, and whether the heat sink has accumulated dust.

Check for signs of leakage at the coolant interface.