Panasonic minas a series - Dynamic Brake (DB); Options of the operation through deceleration and stop by turning off the main power (Pr67)

- App. 12 -
Dynamic Brake (DB)
The driver has a dynamic brake for emergency use. Observe the following
precautions.
<Notes>
1. The dynamic brake should be used for emergency stop only.
Otherwise the dynamic brake circuit may be broken.
2. The dynamic brake should be on for just a short time for emergency. If the dynamic brake is activated during
a high-speed operation, leave the motor stopped for at least three minutes.
The dynamic brake can be used in the following cases.
A Main power OFF.
B Servo-OFF
C One of the protective functions is activated.
D Over-travel Inhibit (CWL or CCWL) is activated.
In any of four cases above, the dynamic brake can be activated either during deceleration or after stop, or can be made disabled (i.e. allowing
the free running of the motor). These features can be set by using the relevant parameters. However, if the control power is OFF, the dynamic
brake is kept ON overriding the parameter settings in case the driver is Type 1, 2, 3 or 4; if the driver is type 5, the dynamic brake is not
activated overriding the parameter settings.
A Options of the operation through deceleration and stop by turning off the main power (Pr67)
Do not start or stop the motor by switching servo-on
signal on or off.
D B
D B
Free run
Free run
D B
D B
Free run
Free run
D B
Free run
Free run
D B
D B
Clear
Hold
Free run
Free run
D B
0
Pr67
1
2
3
4
5
6
7
Sequence at
main power-off (Pr67)
Position error
counter
Operating conditions
During deceleration After stop