Panasonic minas a4 series Instruction Manual page 224

Parameter Setup
PrNo. Title
67 Sequence at main
power OFF
68 Sequence at alarm
69 Sequence at
Servo-Off
6A Setup of
mechanical brake
action at stalling
222
Setup
Unit
range
0 to 9 – When Pr65 (LV trip selection at main power OFF) is 0, you can set up,
1) the action during deceleration and after stalling
<0>
2) the clearing of deviation counter content
after the main power is shut off.
Setup
value
<0>
1
2
3
4
5
6
7
8
9
(DB: Dynamic Brake action)
<Caution>
In case of the setup value of 8 or 9, torque limit during deceleration will be
limited by the setup value of Pr6E (Torque setup at emergency stop).
You can set up the action during deceleration or after stalling when some
0 to 3 –
error occurs while either one of the protective functions of the driver is
<0>
triggered.
Setup
value
<0>
1
2
3
(DB: Dynamic Brake action)
<Caution>
The content of the deviation counter will be cleared when clearing the
alarm. Refer to P.43, "Timing Chart (When an error (alarm) occurs (at
Servo-ON command status)" of Preparation.
0 to 9 –
You can set up,
1) the action during deceleration and after stalling
<0>
2) the clearing of deviation counter content,
after turning to Servo-OFF (SRV-ON signal : CN X5, Pin-29 is turned from
ON to OFF)
The relation between the setup value of Pr69 and the action/deviation
counter clearance is same as that of Pr67 (Sequence at Main Power Off)
Refer to P.44, "Timing Chart"-Servo-ON/OFF action while the motor is at
stall" of Preparation as well.
0 to 100 2ms You can set up the time from when the brake release signal (BRK-OFF :
CN X5, Pin-10 and 11) turns off to when the motor is de-energized
<0>
(Servo-free), when the motor turns to Servo-OFF while the motor is at
stall.
• Set up to prevent a micro-travel/
drop of the motor (work) due to the
action delay time (tb) of the brake
• After setting up Pr6a
then compose the sequence so as
the driver turns to Servo-OFF after
the brake is actually activated.
Refer to P.44, "Timing Chart"-Servo-ON/OFF Action While the Motor Is at
Stall" of Preparation as well.
Function/Content
Action
During deceleration After stalling
DB
Free-run
DB Free-run
Free-run Free-run
DB
Free-run
DB Free-run
Free-run Free-run
Emergency stop
Emergency stop Free-run
Action
During deceleration After stalling
DB
Free-run
DB Free-run
Free-run Free-run
SRV-ON
BRK-OFF
> = tb ,
actual brake
motor
energization
Standard default : < >
Deviation counter
content
DB Clear
DB Clear
Clear
Clear
DB Hold
DB Hold
Hold
Hold
DB Clear
Clear
Deviation counter
content
DB Hold
DB Hold
Hold
Hold
OFF
ON
hold
release
tb
hold
release
non-
energized
energized
Pr6A