Panasonic A6 Servo Motor and Driver Instruction — Dynamic Brake

Abstract

This driver (A to F-frame) is equipped with a dynamic brake for emergency stop. Pay a special attention to the followings.

Caution → 1. Dynamic brake is only for emergency stop.

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 running.
(F-frame (200 V)) built-in dynamic brake resistor is capable of handling up to 3 continuous halts at the rated revolutions with max. permissioble interia. When overheated under 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.

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•P.3-33 "Inputs and outputs on connector X4" • P.4-6 to 4-85... "Details of Parameter" • P.6-4 "Protective Function"

Condition setting chart

Torque limit value at emergency stop will be that of Pr5.11 (Setup of torque at emergency stop) when the setup value is 8 or 9.

Torque limit value at emergency stop will be that of Pr5.11 (Setup of torque at emergency stop) when the setup value is 8 or 9.

When setup value is within the range 4 and 7, the protection function that supports immediate stop acts according to operation A and the function that does not support acts according to operation B.
During decelaration to stop, the main power supply must be maintained.
When the protection function acts, content of deviation counter is cleared as the alarm is cleared.

Torque limit value during deceleration will be that of Pr.5.11 (Setup of torque at emergency stop) when the setup value is 2.
Changes will be validated after the control power is turned on.