Dynamic Brake; Outline - Panasonic MINAS A6 Series Operating Instructions Manual

2
Preparation
This driver (A to F-frame) is equipped with a dynamic brake for emergency stop.
Pay a special attention to the followings.
1. Dynamic brake is only for emergency stop.
Caution
Do not start/stop the motor by turning on/off the Servo-ON signal (SRV-ON).
Otherwise it may damage the dynamic brake circuit of the driver.
The Motor becomes a dynamo when driven externally and short circuit cur-
rent occurred while dynamic brake is activated may cause smoking or fire.
2. Dynamic brake is a short-duration rating, and designed for only emergency stop. Allow
approx. 10 minutes pause when the dynamic brake is activated during high-speed run-
ning.
(F-frame(200 V)) built-in dynamic brake resistor is capable of handling up to 3 continu-
ous halts at the rated revolutions with max. permissible inertia. When overheated un-
der more critical operating conditions, the brake will blow out and should be replaced
with a new one.)
• You can activate the dynamic brake in the following cases.
1) When the main power is turned off
2) At Servo-OFF
3) When one of the protective function is activated.
4) When over-travel inhibit input (NOT, POT) of connector X4 is activated
In the above cases from 1) to 4), you can select either activation of the dynamic brake
or making the motor free-run during deceleration or after the stop, with parameter.
Note that when the control power is off, for A to F-frame driver, the dynamic brake will
be kept actived.
Related page
• P.3-33 "Inputs and outputs on connector X4"
• P.4-6 to 4-85... "Details of Parameter"
• P.6-4 "Protective Function"
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11. Dynamic Brake

Outline

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