Yaskawa CIMR-V7AM-091 - Manual (Page 13)

Date: 02/20/05, Rev: 05-02 Page 13 of 15 TM.V7SW.091
In Case of Rapid Deceleration Only When KEB Starts
In case of power loss exceeding KEB compensation time
Operation when the multi-function input KEB command is used and the KEB compensation time is
other than 0.0sec.
Drive main circuit
DC bus bar voltage
Drive output
frequency
0
0
KEB Deceleration ratio changeover time (n047)
KEB Deceleration
Time 1
KEB Deceleration
Time 2
Power Loss
OFF OFF
ON KEB command
Power Recovery
KEB Starting Voltage
(n048)
During under
voltage detection
OFF KEB Command
ON
OFF
OFF
ON OFF
During KEB
detection
OFF
M
u
lti
function
Input
Drive main circuit
DC bus bar voltage
0
KEB Starting Voltage→
(n048)
Power loss
↓
Drive output frequency
→ UV1 trip occurs and the
motor coasts to a stop.
KEB Compensation time(n143)
ON
0
Note: Without recovery from the power loss within
the KEB compensation time, UV1 trip occurs.
Operation is performed
according to the status of
main circuit DC bus bar
voltage after tripping.
Multifunc
ti
on
Output
ｎ019or n021acceleration ratio
<2> Depending on set value of KEB
re-acceleration time selection (n146)