Yaskawa CIMR-UU4A0034A [175/644] Motor speed

Yaskawa CIMR-UU2A0054F [175/644] Motor speed
Motor speed
Output frequency
Power supply voltage
0
Normal operation
Search in progress
b3-50
b3-51
b3-53
Forward operation
t
Momentary power loss time t
Figure 5.20 Continuing Baseblock
Speed Search in Direction Opposite to Direction Command (b3-51 ≤ t)
When time
t from the momentary power loss to recovery exceeds the setting value of b3-51, Speed Search is performed in the
opposite direction of the direction command. The deceleration time in b3-53 is used for the search frequency and the setting
value of the maximum frequency is used as the starting search frequency.
Motor speed
Output frequency
Power supply voltage
0
Normal operation
Search in progress
b3-50
b3-51
Forward operation
t
Momentary power loss time t
b3-53
Figure 5.21 Speed Search in Direction Opposite to Direction Command (b3-50 ≤ t < ∞)
n
b3-52: Backspin Search Deceleration Time 1
Sets the search frequency deceleration rate when searching from the direction command when momentary power loss time t
is shorter than the time set in b3-50.
Set the value lower than the motor deceleration rate during coasting.
No. Name Setting Range Default
b3-52 Backspin Search Deceleration Time 1 0.1 to 10.0 s 2.0 s
n
b3-53: Backspin Search Deceleration Time 2
Sets the search frequency deceleration rate for a Speed Search from the opposite direction of the direction command when
momentary power loss time t is equal to or longer than the time set in b3-51.
5.2 b: Application
YASKAWA ELECTRIC SIEP C710636 04C U1000 Industrial MATRIX Drive Technical Manual
175
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Parameter Details

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