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8-4 Dynamic brake
Servo driver (size A-G) has dynamic brake built in for emergency stop.
Size H driver does not have built-in dynamic brake.
Dynamic brake can be operated in the following cases
1. The main power off
2. The servo off
3. Protection action
4. Connector X4 driving ban importation (POT, NOT) action
On the above 1~4 cases, valid or invalid of dynamic brake can be determined by the parameters.
However, when the control power off, dynamic brake of size A-F keep valid condition and the dynamic brake of
size G, H is released.
The dynamic brake is provided only for the short-time usage in case of emergency stop. Therefore, note the following points.
1.
Do not start or stop operation by turning on/off the servo ON signal. Otherwise, the dynamic brake circuit built in the
servo driver may get damaged.
2.
Do not drive the motor with external power. If the motor is driven from outside, it will work as a generator.
Therefore, short circuit current is applied during operation of the dynamic brake, which can cause smoking or ignition.
In addition, the dynamic brake may be disconnected, which can cause disabling the operation.
3.
If the dynamic brake is operated during high-speed operation, provide stop time for approx. 10 minutes.
If the dynamic brake is used beyond that condition, the brake may be disconnected, which can cause disabling
the operation.
Size G and H driver can attach a dynamic brake circuit (electromagnetic contactor for driving and resistor) externally.
Size G driver should be externally attached when the built-in dynamic brake resistance capacity is insufficient.
Wiring according to the above notes "Wiring to power connector and terminal block", and wiring diagram
of Size G 200 V
R6.0
, Size H 200 V .
Motion Control Business Unit, Panasonic Corporation
No. SX-DSV03224-75-
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