B4: Timer Function - YASKAWA U1000 Series Technical Manual

5.2 b: Application
Figure 5.21
Power supply voltage
Momentary power loss time t
0
Normal operation
Search in progress
Figure 5.21 Speed Search in Direction Opposite to Direction Command (b3-51 ≤ t)
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.
b3-52
■ 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.
b3-53

◆ b4: Timer Function

The timer function is independent of drive operation and can be used to delay the switching of a digital output triggered
by a digital input signal. An on-delay and off-delay can be separately set. The delay timer can help to get rid of chattering
switch noise from sensors.
To enable the timer function, a multi-function input must be set to "Timer function input" (H1-=18) and a
multi-function output must be set to "Timer output" (H2-=12). Only one timer can be used.
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.
b4-01
b4-02
200
Forward operation
b3-50
b3-51
Name
Backspin Search Deceleration Time 1
Name
Backspin Search Deceleration Time 2
Name
Timer Function On-Delay Time
Timer Function Off-Delay Time
b3-53
t
Setting Range
Setting Range
Setting Range
0.0 to 3000.0 s
0.0 to 3000.0 s
YASKAWA ELECTRIC SIEP C710636 02B YASKAWA U1000 Technical Manual
Default
0.1 to 10.0 s
Default
0.1 to 10.0 s
Default
2.0 s
2.0 s
0.0 s
0.0 s