Denso SMT7 - Specification Details

Chapter 3 Choosing AC Servomotors
32
3.1.4 Specification Details
(1) Performance
Item Specifications
Heat resistance
Allowable ambient temperature
Running: 0C to +40C
In storage: -20C to +80C
Dampproof
Allowable ambient humidity
20% to 80% RH (No dew condensation allowed)
Insulation resistance
10 M or more (when cooled), measured by 500 VDC megger
(Motor part: Between frame and lead wire)
Withstand voltage
To resist 1500 VAC for one minute (at motor)
To resist 1200 VAC for one second (at brake)
Instantaneous maximum
revolving speed
100% of maximum rotation speed
Vibration resistance
49 m/s
2
max. (In each of X, Y, and Z axes)
Enclosure
Fully-enclosed, non-ventilated IP55
(except the motor shaft penetrating section)
(2) Assembly accuracy
The assembly accuracy is specified in external dimension drawings given in Section 3.2.
- The motor shaft deviation should be measured in the lateral direction.
- The perpendicularity of the flange face to the shaft and the eccentricity of the spigot joint
should be measured in the shaft upper direction.
The end play (Shaft direction backlash) should be 0.3 mm or less.
(3) Mounting to the equipment
When mounting the motor shaft to the equipment, use a flexible joint.
If a rigid joint is used, even a slight runout of the center applies an excessive force to the
shaft, resulting in a shaft break.
If it is not avoidable to use a rigid joint, confirm the mounting accuracy and strength of the
motor shaft.
The motor has a built-in positioning transducer. When mounting the motor to the equipment,
take special care not to apply an excessive force to the shaft; otherwise, the positioning
transducer may be broken.
Do not pull motor lead wires. Do not allow them to be bent repeatedly.