36
4
Calibration
36
Calibrat
ion
Chapter
4
Rotation stop mode
Cut-off looks unclear when the rotation stops suddenly due to the constraint of maximum detection
time corresponding to the minimum input rotation speed. For this reason, 0 rpm display can be
forcibly set with "the cycle of the rotation speed last detected × a certain multiple".
≪
Setting value
≫
OFF (invalid)
After detection is waited for the duration
of the maximum detection time
corresponding to the minimum input rotation speed, the display becomes 0 rpm.
2 times, 4 times, 8 times (valid)
If pulse is not detected from the cycle of the rotation speed last detected to the cycle
of the set multiple, the display becomes 0 rpm forcibly.
Example) When stopped suddenly with the setting of "4 times"
Example) When decelerated suddenly with the setting of "4 times"
Pulse
Display
3000rpm
0rpm
Final cycle T
T×4
Since pulse is not detected,
Sudden stop
(Display held)
0 rpm is displayed
Pulse
Display
3000rpm
Final cycle T
T×4
1500rpm
New pulse is detected before T×4 time
Sudden deceleration
1000rpm
(Display held)
