No. SX-DSV02472 -99-
• Setting of Pr5.13 "Over-speed level setup" and Pr6.15 "2nd over-speed level"
The motor may not stop normally even if the emergency stop function is used.
For example, when the motor velocity exceeds Pr5.13 "Over-speed level setup" as shown in the figure below, the
motor velocity may increase if normal control cannot be accomplished even after the start of emergency stop
operation.
As a safety measure in case of this case, Err26.1 "2nd over-speed protection" is provided.
As Err26.1 is an alarm that does not require emergency stop, energization to the motor is shut off and the motor is
stopped according to sequence at alarm, operation B. Set an allowable over-speed level for Pr6.15 "2nd over-speed
level setup".
In addition, set Pr5.13 to a small value with a sufficient margin for Pr6.15. If the margin is insufficient or the set
value is the same, both Err26.0 and Err26.1 may be detected. In this case, Err26.0 will be displayed. However,
because Err26.1 is also activated internally, priority is given to the alarm that does not require emergency stop, and
emergency stop is not executed.
Furthermore, if the Pr6.15 setting is smaller than the Pr5.13 setting, Err26.1 occurs prior to Err26.0. Thus,
emergency stop is not executed.
Operation according to sequence
at alarm operation B
<For energization shutoff>
2nd over-speed level (Pr6.15)
Over-speed level (Pr5.13)
Occurrence of Err26.0 (alarm requiring emergency stop)
operation
If the velocity has exceeded the value set in Pr6.15
"2nd over
-speed level setup", energization is shut
off and operation is performed according to
sequence at alarm operation B.
Err26.1 (alarm that does not require emergency stop) occurs internally.
Normal operation (operation according to
the command from the host device)
Energization
R1.05
Motor Business Division, Appliances Company, Panasonic Corporation
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