No. SX-DSV02472 -
98-
6-3-5 Emergency stop upon occurrence of alarm
When an alarm requiring emergency stop occurs, the system controls and immediately stops the motor.
(1) Parameters
Class No.
At-
trib-
ute *1)
Title
Range
Unit
Function
5
10
B
Sequence at alarm
0–7
—
Specify the status during deceleration and after stop, after occurrence of alarm.
Setting the parameter to one of 4 to 7, enables emergency stop.
5
11
B
Torque setup for
emergency stop
0–500
%
Set up the torque limit at emergency stop.
When setup value is 0, the torque limit for normal operation is applied
5
13
A
Over-speed level
setup
0–20000 r/min
If the motor speed exceeds this setup value, Err26.0 Over-speed protection occurs.
The over-speed level becomes 1.2 times of the motor max. speed by setting up this to 0.
6
14
B
Emergency stop
time at alarm
0–1000
ms
Set up the time allowed to complete emergency stop in an alarm condition. Exceeding
this time puts the system in alarm state.
When setup value is 0, immediate stop is disabled and the immediate alarm stop is
enabled.
6
15
A
2nd over-speed
level setup
0–20000 r/min
When the motor speed exceeds this setup time during emergency stop sequence in an
alarm condition, Err 26.1 2nd over-speed protection will be activated.
The over-speed level becomes 1.2 times of the motor max. speed by setting up this to 0.
*1) For parameter attribute, refer to Section 9-1.
(2) Description
• Emergency stop sequence upon occurrence of an alarm requiring emergency stop.
Torque limit
Speed
[r/mn]
Time
Alarm state (operation after stop: DB/free run)
Emergency stop
Operation
Normal operation according to the command from the host device.
Velocity instruction
Motor velocity
Pr5.11
For normal operation
For normal operation
Alarm requiring emergency stop occurs.
No alarm
Alarm
Stop
reference
speed
(30r/min)
After occurrence of an alarm requiring emergency stop: when the speed has not dropped
down to 30 r/min after the elapse of time set by Pr 6.14 Emergency stop time at alarm, the
system generates the alarm. The system also enters the alarm state if an alarm that does not
require emergency stop occurs in the driver during the sequence of the emergency stop.
Emergency stop time
* Pr 5.11 Torque set up at emergency stop—shock relief upon emergency
stop
Note: To prevent overrun during emergency stop sequence, set allowable over-speed level to Pr 6.15 2nd
over-speed level setup. Because the 2nd over-speed protection is an error not compatible with emergency
stop, this error causes tripping. However, if the setting level is lower than that of Pr 5.13 Over-speed
level setup, Err 26.1 2nd over-speed protection occurs before Err 26.0 Over-speed protection and the
system will not trigger emergency stop.
If Err 26.0 and Err 26.1 are detected concurrently, Err 26.0 is displayed. No emergency stop occurs
because Err 26.1 has occurred.
R1.05
Motor Business Division, Appliances Company, Panasonic Corporation
