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 (b3-51 ≤ t)
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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
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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.
No. Name Setting Range Default
b3-53 Backspin Search Deceleration Time 2 0.1 to 10.0 s 2.0 s
u
b4: Timer Function
The timer function is independent of drive operation and can delay the switching of a digital output triggered by a digital input
signal and help eliminate chattering switch noise from sensors. An on-delay and off-delay can be set separately.
To enable the timer function, set a multi-function input to “Timer Function Input” (H1-oo = 18) and set a multi-function
output to “Timer output” (H2-oo = 12). Only one timer can be used.
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b4-01, b4-02: Timer Function On-Delay, Off-Delay Time
b4-01 sets the on-delay time for switching the timer output. b4-02 sets the off-delay time for switching the timer output.
No. Name Setting Range Default
b4-01 Timer Function On-Delay Time 0.0 to 3000.0 s 0.0 s
b4-02 Timer Function Off-Delay Time 0.0 to 3000.0 s 0.0 s
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Timer Function Operation
The timer function switches on when the timer function input closes for longer than the value set to b4-01. The timer function
switches off when the timer function input is open for longer than the value set to b4-02. Figure 5.22 illustrates the timer
function operation:
5.2 b: Application
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual
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5
Parameter Details
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