5.4 Setting Stop Functions
5 -61
5.4.2 Using the Dynamic Brake
To stop the Servomotor by applying the dynamic brake (DB), set the desired mode in the follow-
ing user constant. The Servomotor will stop due to equipment friction if the dynamic brake is
not applied.
Pn001.0
Servo OFF or Alarm Stop Mode
Factory
Setting:
0
Speed/Torque
Control,
Position Control
The SGDH Servopack turns OFF under the following conditions:
D
The Servo ON input signal (/S-ON, CN1-40) is turned OFF.
D
A Servo alarm occurs.
D
Main power is turned OFF.
Stop mode
After stopping
Coast to a
stop
Dynamic
brake stop
Hold dynamic brake
Coast status
0
1
Pn001.0 = 0
or 1
Servo
OFF
Pn001.0
= 2
Coast status
Specify the Stop Mode if any of these occurs during operation.
Pn001.0 Setting
Description
0
Uses the dynamic brake to stop the Servomotor.
Maintains dynamic brake after the Servomotor stops.
*1
1
Uses the dynamic brake to stop the Servomotor.
Releases dynamic brake after the Servomotor stops, and the servomotor
coasts to a stop.
2
Coasts the Servomotor to a stop.
*2
The Servomotor is turned OFF and motion stops due to equipment friction.
* 1.
If the Servomotor is stopped or moving at extremely low speed, it will coast to a
stop.
* 2. When the main power supply is turned OFF, the dynamic brakes of the following types of
Servopack are used.
30 W to 200 W for 100 V :
SGDH--A3BE to --02BD
30 W to 1.5 kW for 200 V :
SGDH--A3AE to --04AE
0.5 kW to 7.5 kW for 400 V : SGDH--05DE to --75DE
For the above types of Servopack, the DB circuit is turned ON when the control power sup-
ply is OFF.
When the DB circuit should be turned OFF when the main power supply or the control
power supply is OFF, disconnect the wiring (U,V, and W) of the Servopack.
z
Dynamic brake (DB)
The dynamic brake is a common way of suddenly stopping a Servomotor.
Built into the Servopack, the dynamic brake suddenly stops a Servomotor
by electrically shorting its electrical circuit.
Servopack
Servomotor
TERMS
5
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