No. SX-DSV03167 - 29 -
R6.0 Motion Control Business Unit, Panasonic Industry Co., Ltd.
8-4 Dynamic brake
The servo driver has a dynamic brake built in for emergency stop.
The dynamic brake can be operated in the following cases.
[1] When power supply is turned off
[2] When the servo is turned off
[3] When the protective function is operated
[4] When drive prohibiting input (POT, NOT) of connector X4 is operated
During deceleration in the above cases [1] to [4] or after the stop of the servo driver, whether the dynamic
brake is operated, or free run is applied can be selected by setting the parameter.
However, when the control power input is turned off, the dynamic brake of the servo driver is kept operated.
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.
8-5 Mounting direction and interval
• Install the servo driver in an environment of Pollution degree 2 or 1, such as in the control panel of IP54
or more.
• Secure the surrounding space for effective cooling.
• Satisfy the environmental conditions for the inside of the control panel.
• Fix the servo driver to the conductive frame.
• If the servo driver is mounted to a painted portion, anti-noise measures can be taken by installing it after peeling
off the paint.
• The temperature around the servo driver should be measured at a position 50 mm away from the side or bottom
surface of the driver. If it is impossible to measure the temperature at a position 50 mm away from it, perform
measurement at the midpoint in the clearance between the obstacle and the driver.
• As shown below, install the servo amplifier so that the connector XA - 1 faces downward.
When other installation directions, use at ambient temperature of 45 ° C or less.
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