Technical Manual for EA350 Analog Pulse Type Servo Driver V101 2.5 Installation direction and space of the servo motor 2.5.1 Installation of motor The servo motor must be properly installed on a dry and firm platform; upon installation, it is required to consider sound ventilation and heat dissipation, as well as sound grounding. For external size and weight of the motor, please refer to the rated values and specifications in Chapter 12.
2.5.2 Installation diagram 17 Item Description Anti-rusting treatment Before installation, wipe off “anti-rust agent” on the extended part of the servo motor shaft, and treat it against trusting Precautions for the encoder Upon installation, collision of the shaft extension end shall be avoided; or otherwise the encoder inside may break Pulley installation Upon installation of a pulley on a servo motor shaft with key slots, a screw hole shall be used on the shaft end. To install the pulley, first insert a double-headed nail into the screw hole of the shaft, and then use a nut to lock the pulley in place; a washer shall be used on the coupling interface.
For a servo motor shaft with key slots, a screw hole on the shaft end shall be used for installation. For a bare shaft without key slots, wear coupling or a similar method is adopted. Upon removal of the pulley, it is required to use a pulley remover to prevent impact on the bearing. For safety, a protective cover or other similar device shall be installed in the rotation area. Centering Upon connection to a machine, do use a coupler and keep the servo motor axis in line with the mechanical axis; the radial runout on the circumference of the coupler shall not exceed 0.03mm.
If centering is insufficient, vibration may occur to cause damage to the bearing, the encoder and other components. Installation direction The servo motor can be installed horizontally or vertically; it may not be installed in an inclined manner; otherwise wear of the motor bearing may be accelerated. Countermeasures against oily water When the servo motor is intended for use in a place with dripping water, such use shall be based on the protection grade of the servo motor (excluding the shaft running-through part). A servo motor with oil seal shall be used if the location of the motor may expose the shaft running-through part to dripping oil. Use conditions of a servo motor with oil seal:
Make sure the oil level is below the oil seal lip during use. Use the servo motor when the oil seal can keep oil splashes to a certain extent. When the servo motor is installed vertically upwards, take care to prevent oil accumulation at the oil seal lip. Cable stress condition Do not excessively bend or tension cables, particularly the encoder signal cable with fine core wires of 0.14mm2 or 0.2mm2, during wiring or use. Upon installation of a drag chain, it is required to select a highly flexible drag chain cable. Treatment of connectors For connectors, the following precautions shall be observed:
Upon connection of a connector, make sure there is no foreign matters in the connector. Upon connecting the connector to the servo motor, make sure connection is started from the main circuit cable side of the servo motor, and the ground line of the main cable must be reliably connected. If the encoder cable side is connected first, the encoder may fail due to the potential difference with the PE. Upon wiring, make sure the pins are arranged correctly. The connector is made of resin. Do not apply impact on the connector; otherwise it may be damaged. Upon handling the equipment with cables connected, do hold the main body of the servo motor.
If the motor is handled by holding the cables, the connector may be damaged or the cable may break. If bending a cable is needed, take care during wiring not to cause any stress or tension to the connector; otherwise damage or poor contact of the connector may be caused.