10.3 Overload Characteristics
166
10.3 Overload Characteristics
The SERVOPACK provides a function to protect the servomotor and SERVOPACK from overloads.
• If an overload alarm occurs, remove the cause and wait for at least one minute until the
servomotor temperature decreases. And then, turn ON the power supply.
If the start and stop operation of the servomotor is repeated in a short time of period, the
servomotor windings may burn out.
• Always use the SERVOPACK in combination with the correct servomotor model.
• The overload characteristics shown below are the values used when the servomotor is
installed on an aluminum heat sink (250
×
250
×
6 (mm)) at the ambient temperature of
40
°
C. Use the SERVOPACK and servomotor under the same conditions to obtain the
overload characteristics shown below.
The overload characteristics are shown below.
Note: The motor torque (%) is a percentage to the rated torque.
IMPORTANT
1000
100
10
1
100
150
200
250
300
Motor Torque (%)
Time (s)
SJME-01 (100 W)
Example
:
If the motor torque is 300 %, an overload
alarm will occur in approximately two second
1000
100
10
1
100
150
200
250
300
Motor Torque (%)
SJME-02 (200 W) to SJME-08(750 W)
Time (s)
TOEP_C710806_03A_1_0.book Seite 166 Montag, 2. Juli 2007 3:55 15
